From owner-population-bio@net.bio.net Sat Mar 02 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!newsfeed.internetmci.com!mr.net!news.mr.net!scream.ing.com!kerry From: kerry@mtn.org (kerry lund) Newsgroups: bionet.population-bio Subject: Re: populATION Date: 3 Mar 1996 17:44:32 GMT Organization: gofast.net -- ISDN ISP for MPLS/STPL Lines: 41 Message-ID: <4hclq0$vk0@scream.ing.com> References: <1996Feb29.212959.5573@news.etc.bc.ca> NNTP-Posting-Host: dial-007.mtn.org X-Newsreader: News Xpress Version 1.0 Beta #4 In article , Sean Clancy wrote: >On Thu, 29 Feb 1996, Dan Rubin wrote: > >> >> >> DOESN'T IT SEEM AT LEAST A LITTLE STRANGE THAT THE MOST SIGNIFICANT >> ASPECT OF BIOLOGY FOR OUR EXISTENCE ON THIS PLANET AT THIS TIME (the >> explosion of the human population and the resulting destruction of living >> systems in all parts of the world) DOESN'T HAVE A SINGLE POST!? >> > > > As a practising ecologist it is not the most important biological >issue, therefore desires no seperate post! A little interesting peice >of information for all you tree huggers out there who feel the loss of >life on earth is wrong; In order to have life and adaptation, there >must be death!!!!!! We all forget that death is how we came into being! > > When life evolved on this planet, it evolved in circles. There is a oxygen cycle, there is a carbon cycle, there is a nitrogen cycle, there is a water cycle, etc. We humans have disrupted those cycles. Long-tern sustainable carrying capacity = annual carbon usage - equal to or less than annual carbon fixation. Annual water usage - equal to or less than annual water usage, annaul fish catch - equal to or less than annual fis reproduction. Annual top soil loss - equal to or less than annual top top soil formation. Another way or looking at it is; the planet is like a business. Our annual operating income is our annual energy from the sun, which is fixed finite and quantifiable. This in turn drives the annual rainfall and forest growth and phytoplankton growth. Our savings accounts are the stored energy from the sun, our fossil fuels, our old growth forests and groundwater. Yes, we can have a good time while using our savings accounts, but once they are gone they are gone and we will have no choice except to get along with our annual operating income. Our current population levels are based on using our savings accounts for a large part of our existance. There are many other factors involved with this. Diversity and interdependance of species. In the long run, mono culture and mono species are not viable. > > From owner-population-bio@net.bio.net Sun Mar 03 22:00:00 1996 Path: biosci!UNCFSU.CAMPUS.MCI.NET!dhaas From: dhaas@UNCFSU.CAMPUS.MCI.NET ("David L. Haas") Newsgroups: bionet.population-bio Subject: Re: PopulLATION Date: 4 Mar 1996 10:48:28 -0800 Organization: Fayetteville State University Lines: 8 Sender: daemon@net.bio.net Distribution: world Message-ID: <313B3A4E.4023@uncfsu.campus.mci.net> NNTP-Posting-Host: net.bio.net What do you mean "we humans" - If you were a lower life form like me you would rejoice in what humans are doing. Being rather unspecialized and having a short sexual life cycle my species is able to adapt where you parasitic animals cant! I only wish you were as powerful as you think you are. Unfortuantely your conceit is larger than your penis!! If by chance you do some real damage guess who will still be here when you are gone? Don't ask why I won't mention the name of my species I've seen what you can do if you don't like criters like me. From owner-population-bio@net.bio.net Sun Mar 03 22:00:00 1996 Path: biosci!bcm.tmc.edu!news.msfc.nasa.gov!elroy.jpl.nasa.gov!swrinde!howland.reston.ans.net!torn!news.bc.net!rover.ucs.ualberta.ca!news.ucalgary.ca!holly.cc.uleth.ca!news From: Marc Roussel Newsgroups: bionet.population-bio Subject: Re: populATION Date: 4 Mar 1996 19:14:45 GMT Organization: Department of Chemistry, University of Lethbridge Lines: 18 Message-ID: <4hfff5$jub@holly.cc.uleth.ca> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> NNTP-Posting-Host: henri.chem.uleth.ca Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.1N (X11; I; OSF1 V3.2 alpha) X-URL: news:4hclq0$vk0@scream.ing.com kerry@mtn.org (kerry lund) wrote: >Our current >population levels are based on using our savings accounts for a large part >of our existance. I am not aware of any evidence to that effect. Would you back that up, please? There are certainly problems with the impact of our preferred lifestyles on the environment, but as far as I know there is no evidence that we have reached (never mind exceeded) the carrying capacity of the planet for our species. There is some evidence (some of it compelling) that we have reached or exceeded the carrying capacity for people living the standard Western lifestyle, but that's a wholly different question. -- Marc R. Roussel (roussel@henri.chem.uleth.ca) Department of Chemistry University of Lethbridge From owner-population-bio@net.bio.net Mon Mar 04 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!portal.gmu.edu!hearst.acc.Virginia.EDU!murdoch!darwin.clas.Virginia.EDU!mgk From: mgk@darwin.clas.Virginia.EDU (Mahlon G. Kelly) Subject: Re: populATION X-Nntp-Posting-Host: darwin.clas.virginia.edu Message-ID: Sender: usenet@murdoch.acc.Virginia.EDU Organization: uva References: <4hclq0$vk0@scream.ing.com> Date: Tue, 5 Mar 1996 05:06:47 GMT Lines: 6 Don't you think that perhaps we should return to science and leave some of the rhetoric behind? -- Associate Professor (Emeritus) University of Virginia mgk@darwin.clas.virginia.edu From owner-population-bio@net.bio.net Mon Mar 04 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!Germany.EU.net!wizard.pn.com!brighton.openmarket.com!decwrl!news-server.ncren.net!taco.cc.ncsu.edu!news From: Susan Jane Hogarth Newsgroups: bionet.population-bio Subject: Re: populATION Date: 4 Mar 1996 18:05:43 GMT Organization: North Carolina State University Lines: 52 Message-ID: <4hfbdn$iqh@taco.cc.ncsu.edu> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> NNTP-Posting-Host: sparc5b-2203gardnr.ppath.ncsu.edu Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.12 (X11; I; SunOS 5.4 sun4m) X-URL: news:4hclq0$vk0@scream.ing.com kerry@mtn.org (kerry lund) wrote: >When life evolved on this planet, it evolved in circles. ????? Is that like "crop circles"? ;-) > Another way or looking at it is; the planet is like a >business. Yes, we can have a good time while using our >savings accounts, but once they are gone they are gone and we will have no >choice except to get along with our annual operating income. And we will, or else we won't. Then we die. No arguement. What's your point? > There are many other factors involved with this. >Diversity and interdependance of species. In the long run, mono culture >and mono species are not viable. eh??? I guess we may just find out about that, won't we? My point (yes, I have one) is that it's pointless to whine about the evil of humakind, and that we should just get on with our lives. My guess is that if any other creature o this planet had developed our skills, they'd be in exactly the same boat we are now. It's something NEW in the world - *rejoice*! We may just come out on the other side with a _better_ world - who can tell? Why dwell on problems, when we could be concentrating on solutions? Just remember - Crisis=Oppurtunity -- Susan Jane Hogarth "Luck is the residue of design." -- Freddy the Fish "Personally, I'm always ready to learn, although I do not always like being taught." -- Winston Churchill http://www4.ncsu.edu/~sjhogart/public/home.html . .-~\ / `-'\.' `- : | / `._ | | .-. { \ | `-' `. . \ | / ~-.`. \| .-~_ `.\-.\ .-~ \ `-'/~~ -.~ / .-~/|`-._ /~~-.~ -- ~ / | \ ~- . _\ From owner-population-bio@net.bio.net Mon Mar 04 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in2.uu.net!utcsri!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: populATION Date: Tue, 5 Mar 1996 18:41:57 -0330 Organization: Memorial University of Newfoundland Lines: 52 Message-ID: References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: <4hfff5$jub@holly.cc.uleth.ca> On 4 Mar 1996, Marc Roussel wrote: > kerry@mtn.org (kerry lund) wrote: > >Our current > >population levels are based on using our savings accounts for a large part > >of our existance. > > I am not aware of any evidence to that effect. Would you back that up, please? > There are certainly problems with the impact of our preferred lifestyles on the > environment, but as far as I know there is no evidence that we have reached > (never mind exceeded) the carrying capacity of the planet for our species. > There is some evidence (some of it compelling) that we have reached or exceeded > the carrying capacity for people living the standard Western lifestyle, but > that's a wholly different question. > -- > Marc R. Roussel > (roussel@henri.chem.uleth.ca) > Department of Chemistry > University of Lethbridge > > > To further the carrying capacity issue. Have we really reached an ecological carrying capacity for our species in the Western world? If so why has China's population remained at exceedingly high levels for over six or seven centuries? We as humans cannot even imagine the sustainability of a fish stock, let alone our population! On the money "pocket book issue", name one fact to back this hypothesis. Population control in natural systems incures massive deaths and disease. Medicine destroys any chance of "controlling" population growth in the world today. Ofcourse one may argue that education may teach us as a species to stop having offspring, however, this may never happen because of our biological need to survive and procreate overrides economics and ethics. That is why our population will continue to climb. The only way we as a species will find our carrying capacity is when disaster strikes. (ie natural disease and death due to lack of resources). I do not mean to seem glum, but that is Nature. sean Why does a dog lick itself? Because it can! --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Tue Mar 05 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!ra.nrl.navy.mil!news.math.psu.edu!chi-news.cic.net!newsxfer2.itd.umich.edu!agate!howland.reston.ans.net!tank.news.pipex.net!pipex!dish.news.pipex.net!pipex!news.fastnet.co.uk!usenet From: cftw@fastnet.co.uk (Lindsey Gillson) Newsgroups: bionet.population-bio Subject: Help needed on mammal population surveys? Date: 6 Mar 1996 16:02:19 GMT Organization: Care for the Wild Lines: 17 Message-ID: <4hkcub$ucc@swordfish.fastnet.co.uk> NNTP-Posting-Host: dyn0e.fastnet.co.uk X-Newsreader: WinVN 0.92.6+ Re: Capture / Recapture Method of Population survey for mammals. The capture/ recapture method is commonly used to estimate population sizes of wild mammals. It uses the proportion of animals recaptured as a basis for the calculation of total population size. It assumes that all animals in the popualtion are equally `trappable'. However, this technique is biassed because of differences in the responses of animals to being captured. This will partly depend on how averse the animal is to the type of trap being used. Could anyone supply information which may help in the assessment of aversion in capture / recapture experiments? This information could help to ensure that future survey results are free from bias. It could also contribute to the development of traps which cause minimal distress to animals. From owner-population-bio@net.bio.net Tue Mar 05 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in2.uu.net!news.sprintlink.net!nuhou.aloha.net!lehua.ilhawaii.net!usenet From: Jay Hanson Newsgroups: bionet.population-bio Subject: Re: populATION Date: Wed, 06 Mar 1996 08:36:13 +0000 Organization: http://csf.Colorado.EDU/authors/hanson/index.html Lines: 126 Message-ID: <313D4E7D.64EE@ilhawaii.net> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> NNTP-Posting-Host: pm222.ilhawaii.net Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Mailer: Mozilla 2.0 (Win16; I) Marc Roussel wrote: > = > kerry@mtn.org (kerry lund) wrote: > >Our current > >population levels are based on using our savings accounts for a large pa= rt > >of our existance. > = > I am not aware of any evidence to that effect. Would you back that up, p= lease? > There are certainly problems with the impact of our preferred lifestyles = on the > environment, but as far as I know there is no evidence that we have reach= ed > (never mind exceeded) the carrying capacity of the planet for our species= =2E > There is some evidence (some of it compelling) that we have reached or ex= ceeded > the carrying capacity for people living the standard Western lifestyle, b= ut > that's a wholly different question. BALTIMORE (Feb. 9, 1996) If humans can't control the explosive population growth in the coming century, disease and starvation will do it, Cornell University ecologists have concluded from an analysis of Earth's dwindling resources. = A grim future=97without enough arable land, water and energy to grow food for 12 billion people=97is all but inevitable and all too soon, a worried David Pimentel today (Feb. 9) told an American Association for the Advancement of Science (AAAS) session on "How Many People Can the Earth Support?" "Environmentally sound agricultural technologies will not be sufficient to ensure = adequate food supplies for future generations unless the growth of human population is simultaneously curtailed," the Cornell professor of ecology said, speaking for researchers who produced the report, "Impact of Population Growth on Food Supplies and Environment." = The "optimum population" that the Earth can support with a comfortable standard of living is less than 2 billion, including fewer than 200 million people in the United States, the Cornell scientist noted. But if the world population reaches 12 billion, as it is predicted to in 50 years, as many as 3 billion people will be malnourished and vulnerable to disease, the Cornell analysis of resources determined. The planet's agricultural future=97with declining productivity of cropland=97can be seen in China today, Pimentel suggested. = China now has only 0.08 hectare (ha) of cropland per capita, compared to the worldwide average of 0.27 ha per capita and the 0.5 ha per capita considered minimal for the diverse diet currently available to residents of the United States and Europe. Nearly one-third of the world's cropland has been abandoned during the past 40 years because erosion makes it unproductive, he said. = Competition for dwindling supplies of clean water is intensifying, too, the Cornell ecologists concluded. Agricultural production consumes more fresh water than any other human activity=97about 87 percent=97and 40 percent of the world's people live in regions that directly compete for water that is being consumed faster than it is replenished. Further, water shortages exacerbate disease problems, the ecologists' analysis pointed out. About 90 percent of the diseases in developing countries result from a lack of clean water. Worldwide, about 4 billion cases of disease are contracted from water each year and approximately 6 million people die from water-borne disease, Pimentel said. "When people are sick with diarrhea, malaria or other serious disease, anywhere from 5 to 20 percent of their food intake is lost to stress of the disease," he said. = Prices of fossil fuels will rise as the world's supplies are depleted. While the United States can afford to import more petroleum when its reserves are exhausted in the next 15 to 20 years, developing countries cannot, Pimentel said. "Already, the high price of imported fossil fuel makes it difficult, if not impossible, for poor farmers to power irrigation and provide for fertilizers and pesticides," he said. The analysis was conducted by Pimentel, professor of entomology and of ecology in the College of Agriculture and Life Sciences at Cornell; Xuewen Huang, a visiting scholar in the agriculture college; Ana Cordova, a graduate student in the agriculture college; and Marcia Pimentel, a researcher in Cornell's Division of Nutritional Sciences. = The ecologists pointed to two alarming trends: At the same time that world population is growing geometrically, the per capita availability of grains, which make up 80 percent of the world's food, has been declining for the past 15 years. Food exports from the few countries that now have resources to produce surpluses will cease when every morsel is needed to feed their growing populations, the ecologists predicted. That will cause economic discomfort for the United States, which counts on food exports to help its balance of payments. But the real pain will wrack nations that can't grow enough, Pimentel said. "When global biological and physical limits to domestic food production are reached, food importation will no longer be a viable option for any country," he said. "At that point, food importation for the rich can only be sustained by starvation of the powerless poor." = EDITORS: David Pimentel can be reached at 607-255-2212. Cornell University News Service, 840 Hanshaw Road, Ithaca, NY 14850 Phone: 607-255-4206; FAX: 607-257-6397 = http://www.news.cornell.edu EMAIL: cunews@cornell.edu = Jay --- EVERYTHING YOU WANTED TO KNOW ABOUT THE ECONOMY (but were afraid to ask): http://csf.Colorado.EDU/authors/hanson/ From owner-population-bio@net.bio.net Tue Mar 05 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.internetmci.com!in2.uu.net!news1.digital.com!decwrl!tribune.usask.ca!rover.ucs.ualberta.ca!news.ucalgary.ca!holly.cc.uleth.ca!news From: Marc Roussel Newsgroups: bionet.population-bio Subject: Re: populATION Date: 6 Mar 1996 16:06:25 GMT Organization: Department of Chemistry, University of Lethbridge Lines: 49 Message-ID: <4hkd61$jed@holly.cc.uleth.ca> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> NNTP-Posting-Host: henri.chem.uleth.ca Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.1N (X11; I; OSF1 V3.2 alpha) X-URL: news:Pine.OSF.3.91.960305182811.19844A-100000@plato.ucs.mun.ca Sean Clancy wrote: >On 4 Mar 1996, Marc Roussel wrote: >> There is some evidence (some of it compelling) that we have reached or >> exceeded >> the carrying capacity for people living the standard Western lifestyle, but >> that's a wholly different question. > > To further the carrying capacity issue. Have we really reached >an ecological carrying capacity for our species in the Western world? If >so why has China's population remained at exceedingly high levels for >over six or seven centuries? Is this a deliberate distortion of my position? If so, I resent it. If not, reread the above passage. I said nothing about reaching the carrying capacity of any particular part of the world. Paraphrasing my own posting, I wrote that it may not be possible to offer everyone in the world the Western lifestyle of conspicuous consumption. The implication of my posting in fact is that we may have to change our lifestyles in order to avoid serious environmental problems. The lifestyle of most of the Chinese population is not comparable in its per capita material requirements to the Western lifestyle. >Population control in natural systems incures massive deaths >and disease. Medicine destroys any chance of "controlling" population >growth in the world today. Ofcourse one may argue that education may >teach us as a species to stop having offspring, however, this may never >happen because of our biological need to survive and procreate overrides >economics and ethics. That is why our population will continue to climb. The literature on population growth is, to put it mildly, divided on this issue. That doesn't mean that we shouldn't be concerned, but to assert that "our population will continue to climb" is to stick your neck out further than the evidence warrants, unless you only mean that the population will continue to climb in the short term (decades). That seems fairly certain. In the long term (centuries) we have no idea. For the record, I am in favour of population control efforts. There are enough problems with our current levels of population to warrant attempts to slow or halt human population growth. I am also inclined to pessimism at times, just as Sean appears to be. However, it's important to distinguish scientific fact from speculation. It's time for everyone, from the environmental movement to the scientific community, to admit that we have no idea whether or when human population growth will halt. That in itself is cause for concern. Marc R. Roussel (roussel@henri.chem.uleth.ca) Department of Chemistry University of Lethbridge From owner-population-bio@net.bio.net Tue Mar 05 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!newsfeed.internetmci.com!hookup!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: populATION Date: Wed, 6 Mar 1996 15:55:45 -0330 Organization: Memorial University of Newfoundland Lines: 32 Message-ID: References: <4hclq0$vk0@scream.ing.com> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: On Tue, 5 Mar 1996, Mahlon G. Kelly wrote: > Don't you think that perhaps we should return to science > and leave some of the rhetoric behind? > -- > Associate Professor (Emeritus) > University of Virginia > mgk@darwin.clas.virginia.edu > > Pardon me sir, What is the difference between the two? I am merely stating the importance of death in current ecological (ie population studies) practise. Also, I am emphasising a need for change among current thought and feel it is important to accept your so called "rhetorical" issues into theory? Not all "science" is numbers and facts, it is exploration of hypothesis be it "rhetoric" or your definition of science? sean Why does a dog lick itself? Because it can! --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Wed Mar 06 22:00:00 1996 Path: biosci!agate!dog.ee.lbl.gov!news.cs.utah.edu!cs.utexas.edu!howland.reston.ans.net!gatech!taco.cc.ncsu.edu!news From: Susan Jane Hogarth Newsgroups: bionet.population-bio Subject: Re: populATION Date: 6 Mar 1996 18:55:34 GMT Organization: North Carolina State University Lines: 41 Message-ID: <4hkn36$djb@taco.cc.ncsu.edu> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> NNTP-Posting-Host: fliegen.ent.ncsu.edu Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.12 (X11; I; SunOS 4.1.3_U1 sun4m) X-URL: news:4hkd61$jed@holly.cc.uleth.ca > For the record, I am in favour of population control efforts. There are >enough problems with our current levels of population to warrant attempts to >slow or halt human population growth. Here's how you help control population growth: Don't have any offspring. Don't tell me I can't have them, though. It's a tough issue, I realize, but I hope we can encourage population control (with incentives, education, starvation, whatever), rather than giving some government or "society as a whole" control over how we live our lives. > It's time for everyone, from the >environmental movement to the scientific community, to admit that we have no >idea whether or when human population growth will halt. That in itself is >cause for concern. Yes, I agree totally. It's also an issue for much curiosity - I hope I can stick around for a long time to "see how it turns out". -- Susan Jane Hogarth "Luck is the residue of design." -- Freddy the Fish "Personally, I'm always ready to learn, although I do not always like being taught." -- Winston Churchill http://www4.ncsu.edu/~sjhogart/public/home.html . .-~\ / `-'\.' `- : | / `._ | | .-. { \ | `-' `. . \ | / ~-.`. \| .-~_ `.\-.\ .-~ \ `-'/~~ -.~ / .-~/|`-._ /~~-.~ -- ~ / | \ ~- . _\ From owner-population-bio@net.bio.net Wed Mar 06 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!newsfeed.internetmci.com!in1.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: ANOTHER TOPIC (used to be Re: populATION) Date: Thu, 7 Mar 1996 12:38:42 -0330 Organization: Memorial University of Newfoundland Lines: 23 Message-ID: References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: <4hkd61$jed@holly.cc.uleth.ca> Well it seams another issue is needed to be addressed. I, therefore propose other topics to be discussed. An adequate question for forum (discussion) could be: What role do predator and prey relations have as control mechanisms in natural populations? Also with human populations: If the human population is to continue to increase (keep the scale to decades), what forms of "control" could governments impliment to stabilize growth? sean --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Wed Mar 06 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in1.uu.net!van-bc!unixg.ubc.ca!megill From: megill@bcu.ubc.ca (William Megill) Newsgroups: bionet.population-bio Subject: Re: populATION Date: 7 Mar 1996 23:12:47 GMT Organization: The University of British Columbia Lines: 66 Message-ID: <4hnqhf$c4m@nntp.ucs.ubc.ca> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> NNTP-Posting-Host: raven.zoology.ubc.ca X-Newsreader: TIN [version 1.2 PL2] Hi! Thought I'd throw this little gem in: If you look at the history of European population growth, you'll see first the birth rate and death rates very high. Then the death rate dropped with the advent of modern medicine and better (read cleaner) living conditions. This led to a population explosion, which wasn't slowed down until well into this century, with the decline of the birth rate (even the baby boom birth rates weren't huge when compared to the rates of last century). Now both birth and death rates are low, and the populations are more or less under control (but still increasing nonetheless). The problem (IMHO) with the world's increasing population is that large parts of it are still at the low death rate/high birth rate stage. Once, as was the case in Europe and North America, economic stability (read old age security through other than large numbers of offspring), sets in in the third world, then the population growth ought to slow down (and, if we're lucky, maybe reach some kind of equilibrium before we run out of food). I think therefore that the only way to deal with exponential population growth is to deal with the standard of living in high growth parts of the third world, rather than to try to limit people's reproduction urges. The birth rate will drop when the standard of living gets better, and people are assured of some kind of survival in their old age that doesn't require truck loads of children. Practically what this means is that the dictators in those parts of the world need to stop spending money on weapons, wars, and palaces, and concentrate on getting their population's standard of living up to snuff. Hopefully there's some kind of way to that without going through the nastiness that the Europeans (read western world) went through in terms of polution (think Industrial England) et al. I think I'm probably dreaming in colour, but I don't see any other way to come to a real practical solution without the governments in power changing their approach to their people. There have been some successes in the approach. The World Bank solution of investing in mega-projects doesn't work (think Aswan High Dam in Egypt - disaster for the fertility of the Nile) - the third world governments end up so far in debt, that they can't put their money into the people, instead having to put it into Western banks' coffers. One approach that has worked is investing in the little people themselves. There's a bank in Bangladesh that gives very small loans to the local people, and helps on a individual basis to get people onto their own two feet. Similar approach to helping a village dig a well, rather than send in a truck load of food - something about "give a man a fish and you'll feed him for a day, teach him to fish, and you'll feed him for life". But none of these "invest in the little people" projects will work without the cooperation of the local government. Bangladesh and India are pretty good about such things, but the same can't be said for China or some of the African or South American countries. I suggest that this is where the energy that's building up in this thread ought to be focused :-) Cheers ! William -- _____________________________________________________________________________ William Megill tel: (604) 730 0579 Coastal Ecosystems Research Foundation email: megill@zoology.ubc.ca 207-2173 W 6th Ave, Vancouver, BC, Canada V6K 1V5 world-wide web: http://www.bcu.ubc.ca/~megill/cerf From owner-population-bio@net.bio.net Wed Mar 06 22:00:00 1996 Path: biosci!daresbury!bioftp.unibas.ch!news.vub.ac.be!news.belnet.be!news.rediris.es!scsing.switch.ch!swidir.switch.ch!in2p3.fr!oleane!tank.news.pipex.net!pipex!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: mthogerson@aol.com (MTHOGERSON) Newsgroups: bionet.population-bio Subject: Re: Help needed on mammal population surveys? Date: 7 Mar 1996 14:34:22 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 18 Sender: root@newsbf02.news.aol.com Message-ID: <4hndnu$c2b@newsbf02.news.aol.com> References: <4hkcub$ucc@swordfish.fastnet.co.uk> NNTP-Posting-Host: newsbf02.mail.aol.com X-Newsreader: AOL Offline Reader Small mammals may not necessarily be averse to being trapped. After all, they get a free meal and a night's lodging in a predator-free environment. If they don't get claustrophobic, a live trap may turn out to be a positive experience! For this reason, and many others, one must treat the mark-recapture pethod on a case-by-case (or at least species-by-species) basis. It's a good idea to get a consensus of what works and what doesn't, but when you get right down to it, the whole thing is trial-and-error until you hit upon a scheme that seems to work. Good Luck! Mark Thogerson Biology Dept. Grand Valley State University Allendale, MI 49418 mthogerson@aol.com From owner-population-bio@net.bio.net Wed Mar 06 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.internetmci.com!in1.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: populATION Date: Thu, 7 Mar 1996 12:44:14 -0330 Organization: Memorial University of Newfoundland Lines: 21 Message-ID: References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: <4hkd61$jed@holly.cc.uleth.ca> > Is this a deliberate distortion of my position? If so, I resent it. If not, Sorry, after I had gone back in time I did realize my misunderstanding. > That in itself is > cause for concern. > Marc, I do have to agree with you here. It is cause for concern and a general need for more scientific fact is evident as some studies are know beginning to surface. On an optimistic note, there seems to be more of an effort now to try and solve, or look at the problems we all see today. Altough work is limited, everyday brings forth new and interesting information to the study of population. sean. From owner-population-bio@net.bio.net Thu Mar 07 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.pitt.edu!dsinc!ub!csn!news-1.csn.net!magnus.acs.ohio-state.edu!dstothar From: dstothar@magnus.acs.ohio-state.edu (Diane Stothard) Newsgroups: bionet.population-bio Subject: human population? Date: 8 Mar 1996 13:02:13 GMT Organization: The Ohio State University Lines: 7 Message-ID: <4hpb4l$527@charm.magnus.acs.ohio-state.edu> NNTP-Posting-Host: bottom.magnus.acs.ohio-state.edu Please pardon my diatribe here, but I am getting a little tired of seeing posts on this group about whether or not we have an overpopulation problem on the globe. This newsgroup is _POPULATION BIOLOGY_! For those of you out there that dont STUDY population biology and just want to argue the merits of using condoms or forced sterilization or how many humans does it take to deplete the earth's natural resources, please go elsewhere!!!! From owner-population-bio@net.bio.net Thu Mar 07 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: mthogerson@aol.com (MTHOGERSON) Newsgroups: bionet.population-bio Subject: Transition probabilities from census data? Date: 7 Mar 1996 21:14:58 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 44 Sender: root@newsbf02.news.aol.com Message-ID: <4ho572$ktq@newsbf02.news.aol.com> References: <4hkcub$ucc@swordfish.fastnet.co.uk> NNTP-Posting-Host: newsbf02.mail.aol.com X-Newsreader: AOL Offline Reader Is it possible to derive transition probabilities (for a Leslie matrix) from purely "snapshot-type" census data, where you have the initial and final population vectors? Put mathematically, if you have an equation M (dot) A = B, where A and B are initial and final vectors, is it possible to deduce the structure of matrix M? It seems to me that there are infinitely many possibilities, unless I'm missing something very basic. Here's my problem. I'm working with earthworms, which can change size in either direction, and can even lose their external sexual characters if severely stressed. There is no way to age them, so I have divided them into classes by developmental stage and mass within developmental stage. I have tracked marked individuals in microcosms for up to two years, both in the lab under controlled conditions and in the field with environmental conditions closely monitored. I have derived a set of equations using temperature and soil moisture as driving variables, which calculates transition probabilities and sets up a matrix corresponding to the environmental conditions during the past time period, with which I can project the changes in population structure. The model itself works reasonably well, but now I want to refine it a bit. I have census data from two field locations for a period of ten years, with census data taken every two weeks from early May through late October, 12 or 13 "snapshots" per season. During the last 5 years of the study, an Extremely Low Frequency (ELF) antenna was operating near one of the sites, inducing a weak AC current in the soil. My model predicts the changes in pre-ELF populations reasonably well, but I want to add these data to my model sequentially year-by-year to improve the model's resolution in detecting whether and what effect the EM field has had on the earthworm populations. Again, how can one turn pure census data into transitions? My apologies if you got a copy of this via the Theoretical-Ecology mailing list. Mark Thogerson Biology Dept. Grand Valley State University Allendale, MI 49418 mthogerson@aol.com From owner-population-bio@net.bio.net Thu Mar 07 22:00:00 1996 Path: biosci!bcm.tmc.edu!cs.utexas.edu!natinst.com!news-relay.us.dell.com!swrinde!cssun.mathcs.emory.edu!gatech!newsfeed.internetmci.com!in1.uu.net!lehua.ilhawaii.net!usenet From: Jay Hanson Newsgroups: bionet.population-bio Subject: Re: populATION Date: Fri, 08 Mar 1996 08:25:49 +0000 Organization: http://csf.Colorado.EDU/authors/hanson/index.html Lines: 71 Message-ID: <313FEF0D.7F10@ilhawaii.net> References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> <4hnqhf$c4m@nntp.ucs.ubc.ca> NNTP-Posting-Host: pm227.ilhawaii.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0 (Win16; I) William Megill wrote: > > I think I'm probably dreaming in colour, but I don't see any other way > to come to a real practical solution without the governments in power > changing their approach to their people. When we ask ourselves "What is the likely fate of a society who's central organizing principle is 'economic war of all-against-all' using components of its life- support system for ammunition?" The answer is self-evident: die-off and perhaps die-out. For a picture of the coming nightmare, please visit: http://csf.Colorado.EDU/authors/hanson/ Here is a short essay I wrote on the subject: -------------------------------------------------------------- DEAD. WRONG. 12/1/95 by Jay Hanson "A tormenting thought: as of a certain point, history was no longer real. Without noticing it, all mankind suddenly left reality; everything happening since then was supposedly not true; but we supposedly didn't notice. Our task would now be to find that point, and as long as we didn't have it, we would be forced to abide in our present destruction." Elias Canetti We left reality when we believed the "infinite earth ideas" of Locke, Smith, and Marx. Our "present destruction" (economic system) encourages its disciples to dominate and exploit each other and nature, and rewards the most powerful, aggressive, and ruthless with even more power and riches. Since the system actively destroys people and the environment (both morally and physically), it requires a continuous feast of new people and natural resources. In essence, this method ingests natural-living systems (including people) in one end, and excretes un-natural-dead garbage and waste (including wasted people) out the other -- development and progress. The entropy law dictates that this method can not run in reverse (Prigogine). Our society can not be "de-developed" and "de-progressed". We, like the Sorcerer's Apprentice, call forth "artificials" (large corporations) to faithfully administer our present destruction. Artificials may be seen as autonomous technical structures (machines) that follow the logic inherent in their design. They have no innate morals to keep them from seducing our politicians, subverting our democratic processes or lying to maximize profit. Today, the artificials are transforming life into death as efficiently and as quickly as they can. Now we find that Locke, Smith, Marx, and that entire "dismal science" called economics -- were wrong. Dead wrong. We find that we actually do live in a finite world with a finite life-support system that may be destroyed in less than 35 years. Yet we are unable to call the artificials back because they have stolen our only means to do so: our so-called political system. Thus, the artificials will rip, tear, and gulp down our life-support system till it's gone. We gambled it all and we were wrong. Dead. Wrong. Jay From owner-population-bio@net.bio.net Fri Mar 08 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in2.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: populATION Date: Fri, 8 Mar 1996 19:30:37 -0330 Organization: Memorial University of Newfoundland Lines: 25 Message-ID: References: <1996Feb29.212959.5573@news.etc.bc.ca> <4hclq0$vk0@scream.ing.com> <4hfff5$jub@holly.cc.uleth.ca> <4hkd61$jed@holly.cc.uleth.ca> <4hnqhf$c4m@nntp.ucs.ubc.ca> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: <4hnqhf$c4m@nntp.ucs.ubc.ca> William, You have some real good arguments, however do you really believe raising the standard of living will improve the population situation? As a fellow Canadian, I can say that a high standard of living instills the moral and monetary values which contribute to balanced growth rate. (i.e. it is expensive to have more than 2 children in an urban or suburban community). However, with high standards come a price. The per individual debt in Canadian and U. S. society is substantially (and ridiculously) high, because of our high standard of living. I am not in the position to argue economics but I really don't think the world society needs to be in debt inorder to solve the population problem. Still one thing that puzzles me is the fact (or rhetoric as put forth by another "scientist") that areas such as China and other south eastern Asian countries have been able to sustain extremely high populations throughout time (decades and centuries)? I wonder what Darwin would say if he lived today? sean. From owner-population-bio@net.bio.net Fri Mar 08 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!agate!howland.reston.ans.net!gatech!newsfeed.internetmci.com!in2.uu.net!hearst.acc.Virginia.EDU!murdoch!darwin.clas.Virginia.EDU!mgk From: mgk@darwin.clas.Virginia.EDU (Mahlon G. Kelly) Subject: Re: human population? X-Nntp-Posting-Host: darwin.clas.virginia.edu Message-ID: Sender: usenet@murdoch.acc.Virginia.EDU Organization: uva References: <4hpb4l$527@charm.magnus.acs.ohio-state.edu> Date: Sat, 9 Mar 1996 05:26:47 GMT Lines: 27 dstothar@magnus.acs.ohio-state.edu writes: > > Please pardon my diatribe here, but I am getting a little tired of seeing posts > on this group about whether or not we have an overpopulation problem on the > globe. This newsgroup is _POPULATION BIOLOGY_! For those of you out there that > dont STUDY population biology and just want to argue the merits of using > condoms or forced sterilization or how many humans does it take to deplete the > earth's natural resources, please go elsewhere!!!! HERE HERE!!! I COMPLETELY AGREE WITH YOU. MOST FOLKS DO NOT KNOW WHAT POPULATION BIOLOGY IS. THEY ASSUME THAT IT DEALS WITH HUMAN POPULATIONS AND THAT THE POPULATION IS TOO LARGE. SIMILARLY MOST FOLKS THINK THAT ECOLOGISTS ARE THE SAME AS ENVIRONMENTALISTS, AND THAT WE ALL THINK THAT CARS, TECHNOLOGY, ETC. ARE SPAWNS OF THE DEVIL Of course, ecology is a legitimate academic field. It has nothing to do with environmentalism or saving the world from democrats, republicans, socialists, communists, feminists, masculinists, chauvinists, etc. And IMHO population biology is simply a part of ecology. -- Associate Professor (Emeritus) University of Virginia mgk@darwin.clas.virginia.edu From owner-population-bio@net.bio.net Fri Mar 08 22:00:00 1996 Path: biosci!agate!newsxfer2.itd.umich.edu!gatech!swrinde!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: lwinn@aol.com (LWinn) Newsgroups: bionet.population-bio Subject: Re: human population? Date: 9 Mar 1996 15:52:28 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 1 Sender: root@newsbf02.news.aol.com Message-ID: <4hsr2c$dkl@newsbf02.news.aol.com> References: <4hpb4l$527@charm.magnus.acs.ohio-state.edu> Reply-To: lwinn@aol.com (LWinn) NNTP-Posting-Host: newsbf02.mail.aol.com Ugh. Somebody needs a nap. From owner-population-bio@net.bio.net Fri Mar 08 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: lwinn@aol.com (LWinn) Newsgroups: bionet.population-bio Subject: Re: populATION Date: 9 Mar 1996 15:44:37 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 7 Sender: root@newsbf02.news.aol.com Message-ID: <4hsqjl$ddv@newsbf02.news.aol.com> References: Reply-To: lwinn@aol.com (LWinn) NNTP-Posting-Host: newsbf02.mail.aol.com After reading what everyone has to say, I am struck by the absence of historical perspective. Human populations have certainly been confined before, whether by geographic features or by political or military constraints. England of the last century comes to mind, the age of Dickens and Marx, widespread poverty, crime, drug use (opium, primarily). There must be other clues in the historical record to what lies ahead. Any one spotted some? From owner-population-bio@net.bio.net Fri Mar 08 22:00:00 1996 Path: biosci!bloom-beacon.mit.edu!newsfeed.internetmci.com!swrinde!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: lwinn@aol.com (LWinn) Newsgroups: bionet.population-bio Subject: Enclosure Date: 9 Mar 1996 16:08:53 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 11 Sender: root@newsbf02.news.aol.com Message-ID: <4hss15$e01@newsbf02.news.aol.com> Reply-To: lwinn@aol.com (LWinn) NNTP-Posting-Host: newsbf02.mail.aol.com It seems to me that the single most important question in population biology is: what happens to a population (single-species or predator-prey system) when it is contained within fixed boundaries? I have seen reports on studies of grasses, for example, that indicate that confinement leads to a massive die-off. There is a classic case of a mesa in New Mexico (I don't remember the source offhand) that involved the extinction of the deer population during the winter after the coyotes were wiped out by bounty hunters. I'm an engineer, not a biologist, but I have a certain naive interest in this facet of biology. Anyone care to contribute to my education? From owner-population-bio@net.bio.net Sat Mar 09 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.pitt.edu!scramble.lm.com!news.math.psu.edu!psuvax1!uwm.edu!vixen.cso.uiuc.edu!newsfeed.internetmci.com!nwgw.infi.net!news.infi.net!larry.infi.net!random From: Simon Adkins Newsgroups: bionet.population-bio Subject: survey question, help! Date: Sat, 9 Mar 1996 19:54:52 -0500 Organization: InfiNet Lines: 10 Message-ID: NNTP-Posting-Host: larry.infi.net Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII I'm reading a book on plotless and transect methods and I'd like "point centered quadrat method" explained in greater detail. Can I draw a transect anywhere? How do I determine my random sampling point? From owner-population-bio@net.bio.net Sat Mar 09 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!gatech!news.jsums.edu!news2.cais.net!news.cais.net!wb3ffv!explorer.csc.com!uunet!in1.uu.net!news.u.washington.edu!evolution.genetics.washington.edu!joe From: joe@evolution.genetics.washington.edu (Joe Felsenstein) Newsgroups: bionet.population-bio Subject: Re: Transition probabilities from census data? Date: 10 Mar 1996 00:58:14 GMT Organization: University of Washington Genetics Lines: 34 Message-ID: <4ht9f6$rbh@nntp3.u.washington.edu> References: <4hkcub$ucc@swordfish.fastnet.co.uk> <4ho572$ktq@newsbf02.news.aol.com> NNTP-Posting-Host: evolution.genetics.washington.edu Summary: Hard to do Keywords: population growth, Leslie matrix, census data In article <4ho572$ktq@newsbf02.news.aol.com>, Mark Thogerson, MTHOGERSON wrote: >Is it possible to derive transition probabilities (for a Leslie matrix) >from purely "snapshot-type" census data, where you have the initial and >final population vectors? Put mathematically, if you have an equation > > M (dot) A = B, > >where A and B are initial and final vectors, is it possible to deduce the >structure of matrix M? It seems to me that there are infinitely many >possibilities, unless I'm missing something very basic. I utterly condemn Thogerson for taking the unprecedented step of actually discussing population biology in this newsgroup!! ;-) (Just to humor him) it seems that if you look at a single step, there would be enough information to estimate the survival probabilities but not the birth rates (in short, the survivors would show the survival probabilities fairly straightforwardly but the newborns could not be assigned as to which age of parents they came from. With multiple-step data (a series of population vectors) one would have some hope of seeing how birth rates correlated with the numbers in different age classes. I would think the power for doing this would be small, even if one were able to assume that conditions remained stable throughout. (And now, back to the endless stupid discussions of social and political aspects of human overpopulation, at least until David Kristofferson finds out what 90% of the bandwidth of this newsgroup is being wasted on, and closes it down.) -- Joe Felsenstein joe@genetics.washington.edu (IP No. 128.95.12.41) Dept. of Genetics, Univ. of Washington, Box 357360, Seattle, WA 98195-7360 USA From owner-population-bio@net.bio.net Sat Mar 09 22:00:00 1996 Path: biosci!daresbury!nntp-trd.UNINETT.no!nntp.uio.no!news.cais.net!chi-news.cic.net!nntp.coast.net!fu-berlin.de!zrz.TU-Berlin.DE!news From: Susanne Eckert Newsgroups: bionet.population-bio Subject: Question Date: 10 Mar 1996 15:01:55 GMT Organization: tu-berlin Lines: 6 Message-ID: <4huqt3$82d@brachio.zrz.TU-Berlin.DE> NNTP-Posting-Host: async082.zrz.tu-berlin.de Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Mailer: Mozilla 1.1N (Windows; I; 16bit) I=B4m looking for datas about population growths in connection with medical facts in the last two or three centuries. Can anyone tell me, if there is a connection? Where can I find literatur or datas? Thanks, Susanne From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.internetmci.com!news.zeitgeist.net!news.pixi.com!lehua.ilhawaii.net!usenet From: Jay Hanson Newsgroups: bionet.population-bio Subject: Re: populATION Date: Sun, 10 Mar 1996 16:17:38 +0000 Organization: http://csf.Colorado.EDU/authors/hanson/index.html Lines: 112 Message-ID: <314300A2.37E4@ilhawaii.net> References: <4hsqjl$ddv@newsbf02.news.aol.com> NNTP-Posting-Host: pm207.ilhawaii.net Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Mailer: Mozilla 2.0 (Win16; I) LWinn wrote: > = > After reading what everyone has to say, I am struck by the absence of > historical perspective. Human populations have certainly been confined > before, whether by geographic features or by political or military > constraints. England of the last century comes to mind, the age of Dicken= s > and Marx, widespread poverty, crime, drug use (opium, primarily). There > must be other clues in the historical record to what lies ahead. Any one > spotted some? "IN THE LANGUAGE OF ECOLOGY=97a language which it behooves us all to learn=97the conditions of an imperiled environment are described in a few short and pungent words: 'drawdown,' 'overshoot,' 'crash,' and 'die-off.' = "Drawdown is the process by which the dominant species in an ecosystem uses up the surrounding resources faster than they can be replaced and so ends up borrowing, in one form or another, from other places and other times. For our age, though the examples of such depletion are numerous, the most vivid is that of fossil fuels. In the space of a little more than a hundred years we have used up perhaps 80 percent of the buried remains of the Carboniferous period=97oil, gas, and coal=97that were deposited over a period of a hundred million years or more, and what's more we have become totally dependent on continuing the process. One can argue about the due-date, but the outcome is certain. = "Overshoot is the inevitable and irreversible consequence of continued drawdown, when the use of resources in an ecosystem exceeds its carrying capacity and there is no way to recover or replace what was lost. It takes many forms, depending on the system, but perhaps the clearest and in some ways the most touching is exemplified by Easter Island. When it was first settled a thousand years ago, the island was a rich and forested land covered with palms and a small native tree called the sophora, and on its sixty-four square miles a prosperous and literate culture developed organizational and engineering skills that enabled it to erect the famous massive stone statues all along the coastline. For reasons lost in time, the population of the island over the years increased to something like 4,000 people, apparently necessitating a steady drawdown of vegetation that eventually deforested the entire island and exhausted its fertile soils. Somewhere along the line came overshoot, unstoppable and final, and then presumably conflict over scarce food acreage, and ultimately warfare and chaos. By the time of Captain Cook's voyage to the island in the 1775 there were barely 630 people left, eking out a marginal existence; a hundred years later, only 155 islanders remained. = "Crash, as with the Easter Islanders, is what happens after overshoot=97a precipitate decline in species numbers. Once a population has exceeded the capacity of its environment in one life-giving respect or another, there is no recourse, nothing to be done until that population is reduced to the level at which the resources can recover and are once again adequate to sustain it. Take the case of the famous Irish potato famine. For well over a century, year after steady year, the British encouraged and the Irish developed a near-total dependency upon a single dietary mainstay, the potato, and the population of the island grew from 2 million people to more than 8 million. Then suddenly in 1845 a natural competitor for the potato came along in the form of a parasitic fungus that got to the tubers somewhat before the people did and turned the potatoes into sticky, inedible, mucous globs. Crash: within a generation the country was devastated, more than half the population died or emigrated, and those who remained were reduced to a poverty that diminished only a century later. = "Die-off and, in its final form, die-out, is a phenomenon common in the history of zoology and botany, and the dodo and the passenger pigeon are not exceptional. There is, for example, the everyday but suggestive experience of yeast cells introduced into a wine vat. Enormously successful as a species, they gobble up nutrients from the sugary crushed grapes around them and expand their population without a thought to the consequences of drawdown; within weeks, however, the 'pollution' they produce=97alcohol and carbon dioxide, which of course is what the fermentation is all about=97have so filled their environment that they are unable to survive. The resulting crash, in that vat at least, means an acute die-off and then extinction. = "Where along this ecological trajectory can we locate the modern -- the theoretically sapient -- human?" [p.p. 24-26] = DWELLERS IN THE LAND, by Kirkpatrick Sale; New Society Pub., 1991, Phone: 800-253-3605; ISBN 0-86571-225-5. = See also: http://www.enews.com/magazines/discover/magtxt/080195-5.html = Jay --- EVERYTHING YOU WANTED TO KNOW ABOUT THE ECONOMY (but were afraid to ask): http://csf.Colorado.EDU/authors/hanson/ From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!agate!howland.reston.ans.net!gatech!newsfeed.internetmci.com!in1.uu.net!newsflash.concordia.ca!news.mcgill.ca!news.si.usherb.ca!usenet From: Francis Lefebvre <95411904@callisto.si.usherb.ca> Newsgroups: bionet.population-bio Subject: Re: Help needed on mammal population surveys? Date: 11 Mar 1996 18:36:16 GMT Organization: A poorly-installed InterNetNews site Lines: 28 Message-ID: <4i1rr0$dlk@news.si.usherb.ca> References: <4hkcub$ucc@swordfish.fastnet.co.uk> NNTP-Posting-Host: callisto.si.usherb.ca Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.1N (X11; I; AIX 1) X-URL: news:4hkcub$ucc@swordfish.fastnet.co.uk I'm working with raccoon and I use capture/recapture method to evaluate densities. After my first fieldwork, I found that the adult had the same probality to capture and my estimate is less biaised. I think that the probability to capture depend on each species. Some species are more vulnerable to be trap shy or trap happy. Also it depend on the trap dimension, the bait use, the intelligence of the animal and the manipulation of the animal after a capture. If you stress your animal, this one maybe not recapture again. The time (summer, winter, day, night, etc.), the place and the duration of your trap period also influence the response of the animal to the trap. If you want to trap an animal, you have to know is behavior and is ecology to know where to trap and which trap to use. -- ================================= Francis Lefebvre 95411904@callisto.si.usherb.ca Groupe de recherche en ecologie Dept. de Biologie Universite de Sherbrooke Sherbrooke, Que Canada J1k 2R1 tel. (819)821-7067 (819)346-6276 ================================= From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!internet!biosci!not-for-mail From: biohelp (BIOSCI Administrator) Newsgroups: bionet.population-bio Subject: IMPORTANT - BIOSCI Fundraising Update! Date: 11 Mar 1996 02:00:36 -0800 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 149 Sender: daemon@net.bio.net Distribution: world Message-ID: <199603111000.CAA23352@net.bio.net> NNTP-Posting-Host: net.bio.net I'm interrupting the usual monthly posting of the BIOSCI miniFAQ to bring you up to date on BIOSCI fundraising progress, a topic of concern to your future use of this resource. Thank you in advance for taking the time to read this message carefully. Last year we announced that BIOSCI was going to adopt the U.S. Public Broadcasting System model to fund its operations after our DOE/NSF grant runs out later this year. Unlike PBS, we are not soliciting contributions from users; we are only selling ads on our Web pages solely to cover our operating costs. Our goal is to seek sponsorships until we build up an operating reserve of about $100,000 and then cease further promotions until we need to build the reserve back up. (The accountants among our readership will be familiar with the problem of deferred revenue which we can not safely utilize until ads have been displayed for a period of time.) We have three sponsors to date with a couple more pending. The process is time-consuming, however, and we need your help as explained further below. Our operating costs consist of our network connection, phone lines, hardware maintenance (we hope to have new and faster hardware soon!), plus 0.7 FTE of salaries covering UNIX systems admin, technical support, quality assurance, i.e., testing, of our system, and administrative costs (such as the time it takes to actually find/write/call potential sponsors and raise money!). Although the BIOSCI staff does get compensated for a portion of the work that they do, this project has always received a lot of free after-hours and "vacation" time labor, so we hope that no one will begrudge the time that we do charge to the project to serve you. All of the three part-time staff members, Dave Mack, Julie Lawrence, and myself, have full time day jobs and families in addition to working hard to keep this service running for all of you. Julie and Dave Mack are subcontractors for BIOSCI; my time that is charged to the project defrays a portion of my regular salary instead of adding to my income. Besides having to relocate the project, we were very busy this last year building new infrastructure such as our WWW hypermail interface to the system. This was released last December along with scores of WAIS indices for the newsgroups. Virtually everything is complete, although we do continue to find and fix bugs (many through your helpful feedback!). We are still having some problems with our WAIS indexing. The archives continue to grow rapidly. We are running over 100 indexes now versus three previously and any systems crashes cause greater havoc with the indexing than before! We are still working to fix this as fast as our resources permit and appreciate your patience, but we have been able to automate a lot of the infrastructure to reduce labor as compared to past requirements. We have also implemented new software to make moderation of BIOSCI/bionet newsgroups much easier and combat the growing problem of Internet junk mail and USENET "spamming." About 20% of our groups are now moderated, many of them by the BIOSCI staff! This, for example, made a major difference last year in the quality of content in our EMPLOYMENT/bionet.jobs.offered newsgroup which many commercial concerns and recruiting firms are using **without charge** to recruit candidates for positions in the biological sciences. We are also now in a position to have sponsors for individual newsgroups as you will have noticed if you have visited http://www.bio.net/ and clicked on "Access the BIOSCI/bionet newsgroups" recently. So, how can you help?? ---------------------- As noted above it can take a lot of time to contact potential sponsors if I have to do it all myself. Our request is quite simple. You can do two important things which will take very little time for you individually. First, please use our WWW system at http://www.bio.net/ to access the archives. You can now post or reply to messages via your Web browser. Your usage helps attract sponsors. If you contact any of our sponsors, please be sure to thank them for supporting BIOSCI. It is critical for them to get this feedback if they are to continue their sponsorship for the long term. Second, if you work for a company or organization that provides products or services of interest to the biology community, please pass this message on to your marketing or marketing communications department or other appropriate group. Please ask them to help support BIOSCI by sponsoring our Web site and explain the uses and benefits of the system to the biology community. If they are interested, they can then contact us for further information at our tech support address, biosci-help@net.bio.net. Our hope is to quickly raise several large corporate/institutional sponsors on our heavily-used WWW locations (some stats appended below), and then end this sponsorship campaign so that our resources can continue to be used for service provision, not fundraising. Many of our specialty newsgroup WWW archives are still used by small communities of scientists (and they haven't been heavily promoted yet). While these may be valuable niche markets to some advertisers, it will generate more labor and overhead having to find these sponsors, fairly price the locations, and deal with lots of smaller sponsorships than fewer mid-to large sponsors. We are striving to keep our operation as lean and efficient as possible since we are not trying to make careers out of running BIOSCI. We are trying if at all possible to avoid the administrative overhead entailed with processing lots of small payments to reach our fundraising goals. I'd like to thank all of you for your help in advance. In helping us, you are also helping yourselves, not only in keeping this resource available for all of the both large and small research communities that we serve, but also by alleviating the need for us to go back and compete with researchers for tight grant dollars! We promised NSF when we were awarded the BIOSCI grant that we would carry out this mission to make the service self-supporting. With your help, we will succeed in continuing BIOSCI's work into its second decade. Thank you very much! Sincerely, Dave Kristofferson BIOSCI/bionet Manager biosci-help@net.bio.net A list of our prime WWW sponsorship locations follow. Statistics are for the four week period from 22 Jan. - 18 Feb. 1996 and usage continues to grow. ---------------------------------------------------------------------- The overall BIOSCI WWW pages are currently visited by users from close to 5000 unique computer hosts per week. Web servers only log the Internet computer/host name and frequently more than one individual can connect to us from a particular host. Main home page, http://www.bio.net, visited recently by about 2100 unique hosts per week Main Newsgroups archives page, http://www.bio.net/archives.html, visited recently by about 1200 Unique hosts per week BIO-JOURNALS archive page, http://www.bio.net/BIO-JOURNALS.html, visited recently by about 1000 unique hosts per week. EMPLOYMENT archive pages: http://www.bio.net:80/hypermail/EMPLOYMENT/ and monthly header pages, visited recently by about 600 unique hosts per week. Address database search page, http://www.bio.net/addrsearch.html, visited recently by about 450 unique hosts per week. Methods newsgroup archive pages, http://www.bio.net:80/hypermail/METHDS- REAGNTS/ and monthly header pages, visited recently by about 350 unique hosts per week. ---------------------------------------------------------------------- From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!CS.Arizona.EDU!noao!ennfs.eas.asu.edu!gatech!newsfeed.internetmci.com!news.zeitgeist.net!news.pixi.com!lehua.ilhawaii.net!usenet From: Jay Hanson Newsgroups: bionet.population-bio Subject: Re: Enclosure Date: Sun, 10 Mar 1996 16:21:14 +0000 Organization: http://csf.Colorado.EDU/authors/hanson/index.html Lines: 156 Message-ID: <3143017A.13AA@ilhawaii.net> References: <4hss15$e01@newsbf02.news.aol.com> NNTP-Posting-Host: pm207.ilhawaii.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0 (Win16; I) LWinn wrote: > > It seems to me that the single most important question in population > biology is: what happens to a population (single-species or predator-prey > system) when it is contained within fixed boundaries? I have seen reports > on studies of grasses, for example, that indicate that confinement leads > to a massive die-off. There is a classic case of a mesa in New Mexico (I > don't remember the source offhand) that involved the extinction of the > deer population during the winter after the coyotes were wiped out by > bounty hunters. > > I'm an engineer, not a biologist, but I have a certain naive interest in > this facet of biology. Anyone care to contribute to my education? Here is a clip from one of my papers, visit my web site for more. /////////////////////// TRAGEDY OF THE COMMONS \\\\\\\\\\\\\\\\\\\\\\\ Garrett Hardin's essay, "The Tragedy of the Commons" (1968), is a modern classic in environmental literature. The "commons" refers to the common resources that are owned by everyone. The "tragedy" occurs as the result of everyone being free to maximize one's own profit by exploiting the commons. Hardin's essay goes something like this: Visualize a pasture as a system that is open to everyone. The carrying capacity of this pasture is 10 animals. Ten herdsmen are each grazing an animal to fatten up for market. In other words, all the grass that the pasture can produce is now being consumed by the 10 animals. Dewey (one of the herdsmen) will add one more animal to the pasture if he can make a profit. He subtracts the original cost of the new animal from the expected sales price of the fattened animal and then considers the cost of the food. Adding one more animal will mean less food for each of the present animals, but since Dewey only has only 1/10 of the herd, he has to pay only 1/10 of the cost. Dewey decides to add an animal and take a profit while the other herdsmen suffer losses. These losses are known as "externalities." There is no "technological" solution to this problem. Theoretically, "political" solutions are possible, but with no genuine political system, there are no genuine solutions. Shrinking profit margins force the other herdsmen either to go out of business or add more animals (more runaway positive feedback). This process continues until overgrazing and erosion destroy the pasture system. Although Hardin's essay describes a problem inherent in an unregulated public pasture, it serves as a metaphor for our entire society. Our communities are the commons. Our schools are the commons. Our roads, our air, our water; we all are the commons! Our commons are being polluted by runaway positive feedback in the economic system. For example, a century ago CFCs did not exist. But once the first company incorporated them into its products, competition forced other companies to follow. As more and more products with CFCs entered the market, more and more CFCs were designed into new products. These chemicals are now widely used in air conditioners, refrigerators, solvents, plastic packaging, and foam insulation. NASA researchers have found conclusive evidence showing that CFCs are the cause of the Antarctic ozone hole. The Earth has lost about three percent of its protective stratospheric ozone, resulting in a six percent rise in ultraviolet radiation. Another three percent loss is expected by 2000. Even with a complete phase-out of CFCs, the ozone layer is not expected to return to pre-CFC manufacturing levels until 2060. Worldwide, a billion (a thousand million) skin cancers are expected to result from ozone loss--including 17 million deaths (RHWN, #380). A billion skin cancers? Better get used to it, because this is what happens when we wipe out chunks of our life support system--and we are picking up the pace. //////////////////////////// LIFE SUPPORT SYSTEM DEFINED \\\\\\\\\\\\\\\\\\\\\\\\\\\\ We are all completely dependent on the environmental services that are provided by Mother Earth's complex life support system. Scientists cannot even identify all the variables, much less measure them. Developers often call what they do "improvements," but this is actually a euphemism for "intervention." Interventions in our life support system are, in principle, irreversible and unpredictable (Gleick, 1987). Moreover, these interventions nearly always decrease the Earth's "carrying capacity." I define carrying capacity as the maximum load that can be exerted on a life support system without damaging the system itself. Like hungry men eating their own hands, populations exceeding carrying capacity devour their ability to feed themselves. Ultimately, high mortality rates (negative feedback) return the population to a now-decreased carrying capacity. The Kaibab Plateau (north of the Grand Canyon) was originally capable of sustaining as many as 40,000 deer. Wolves, cougars, and coyotes provided the negative feedback necessary to preserve the deer's life support system (limiting the deer population to less than the plateau's carrying capacity). When bounties encouraged hunters to kill the deer's natural predators (kill the negative feedback), the number of deer mushroomed from a few thousand to at least 50,000. Once the carrying capacity of the plateau was exceeded, the deer had no recourse but to consume the life support system itself. They eventually scoured the landscape for every edible scrap, even eating the bark of the trees. The carrying capacity of the Kaibab Plateau plunged to 10,000 as four out of five deer starved to death. The story of the Kaibab Plateau deer illustrates carrying capacity in its starkest, biologically simplest form: A certain number of animals acting in a certain way can be sustained by the resources in a given region. Anything over that number consumes the life support system itself and decreases the carrying capacity. There is now scientific consensus that the human herd is already beyond carrying capacity (Ekins, 1994). By definition, a biological species beyond carrying capacity cannot be sustained--it will be cropped and truncated--one way or another. Indeed, there is good evidence that we may have less than 35 years until the "functional integrity" of the ecosystem is destroyed (Rees and Wackernagel, 1994). Yet we rush to consume more and more of our life support system for more and more trivialities and distractions. Economic theory assumes that wants are infinite, and attempts to supply them from a finite world. Since this activity is destined to crash, perhaps it is time to ask what humans actually "need." Natural needs are the same in all human beings, for they are inherent in human nature. Material needs include such basics as air, food, water, shelter, sleep, and physical security. Our social needs include such things as liberty, true economic security (not just jobs), love, affection, acceptance, esteem by others, and self-esteem. Moral needs include service, meaningfulness, aesthetics, perfection, truth, and justice (Ekins and Max-Neef, 1992). A good education, a sense of community, and a dependable job are examples of needs. It's clear that Mother Earth can not be all things to all people. We have to decide "what," and to "whom." Jay --- EVERYTHING YOU WANTED TO KNOW ABOUT THE ECONOMY (but were afraid to ask): http://csf.Colorado.EDU/authors/hanson/ From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!news.Stanford.EDU!nntp-hub2.barrnet.net!newsfeed.internetmci.com!in1.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: survey question, help! Date: Mon, 11 Mar 1996 14:04:40 -0330 Organization: Memorial University of Newfoundland Lines: 43 Message-ID: References: NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: On Sat, 9 Mar 1996, Simon Adkins wrote: > I'm reading a book on plotless and transect methods > and I'd like "point centered quadrat method" explained > in greater detail. > > Can I draw a transect anywhere? How do I determine my > random sampling point? > > First you must know what area you wish to sample before desicions are made onto where to begin any sampling point. If, for example you are surveying a habitat for plant composition, you would ideally want a sample which randomly represents the nature of the habitat (ie heterogeneous or homogeneous). A random sampling point is simply a randommly selected point any where on your landscape being sampled. The answer to this question would be essentially anywhere. One method that may work is to get a land-based map of the area wished to be sampled. Without studying the map blind fold a person and tell them to point to any spot on the map (spin them around so they dont know where they will be pointing to). That would constitute a random sampling point. If you need 30 randommly selected sites use thirty different people to select sites. (This can also be done using a computer or a random number table). The Ecology text by Ricklefs (can't remember the date) and Biometry by Sokal and Rolf, may provide some more insight into random sampling points. I hope this helped. sean. --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Sun Mar 10 22:00:00 1996 Path: biosci!rutgers!csn!news-1.csn.net!magnus.acs.ohio-state.edu!lerc.nasa.gov!purdue!gatech!news.jsums.edu!news2.cais.net!news.cais.net!news.ac.net!imci4!newsfeed.internetmci.com!in1.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Re: human population? Date: Mon, 11 Mar 1996 13:52:25 -0330 Organization: Memorial University of Newfoundland Lines: 50 Message-ID: References: <4hpb4l$527@charm.magnus.acs.ohio-state.edu> NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca In-Reply-To: <4hpb4l$527@charm.magnus.acs.ohio-state.edu> On 8 Mar 1996, Diane Stothard wrote: > > Please pardon my diatribe here, but I am getting a little tired of seeing posts > on this group about whether or not we have an overpopulation problem on the > globe. This newsgroup is _POPULATION BIOLOGY_! For those of you out there that > dont STUDY population biology and just want to argue the merits of using > condoms or forced sterilization or how many humans does it take to deplete the > earth's natural resources, please go elsewhere!!!! > > Excuse me, Do humans make up a population of animals? Does this "population" fall into the study of study of population biology? I do aggree that the cultural aspect of human biology should be left out of this newsgroup, however the understanding of the dynamics of HUMAN POPULATION is of equal importance in the study of POPULATION BIOLOGY? What do you suggest this group discuss? Here is a suggestion: I am currenty working on interpreting the population ecology (mortality, fecundity, growth, feeding strategy, locomotive activity) of three populations of Brook trout (Salvelinus fontinalis). One stumbling block I have seen is interpreting age specific mortality from seasonal catch assessments. The specific problem is trying to figure out if this calculated "mortality" is due to death between seasons or is it due to seanonal migration of fish in and out of the lakes. One way of determining this is to block of inflow and outflow streams and count the number of fish moving in and out, however, it is difficult to tell if individual fish are migrating or are they just exploring. How could I correct for this in my population assessments? sean. P.S. Any help from this POPULATION BIOLOGY group would be appreciated. thank-you. --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Mon Mar 11 22:00:00 1996 Path: biosci!bcm.tmc.edu!news.msfc.nasa.gov!sgigate.sgi.com!swrinde!howland.reston.ans.net!surfnet.nl!swsbe6.switch.ch!swidir.switch.ch!in2p3.fr!univ-lyon1.fr!pasteur.fr!usenet From: Michel Kerszberg Newsgroups: bionet.general,bionet.population-bio Subject: biomass data? Date: Tue, 12 Mar 1996 16:19:28 +0100 Organization: Institut Pasteur Lines: 9 Message-ID: <31459600.38F9@pasteur.fr> NNTP-Posting-Host: jana.neubio.pasteur.fr Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0 (X11; I; SunOS 5.4 sun4m) Xref: biosci bionet.general:20349 bionet.population-bio:1876 I should be interested to know where I can find estimations of absolute or relative numbers and/or biomass for bacteria, protozoans, metazoans etc. Thanks for any information! -- Michel Kerszberg >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>> Institut Pasteur tel [33] - (1) - 45 68 88 08 Neurobiologie Mol'eculaire fax [33] - (1) - 45 68 88 36 25 rue du Dr.Roux 75724 Paris Cedex 15 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> From owner-population-bio@net.bio.net Wed Mar 13 22:00:00 1996 Path: biosci!bcm.tmc.edu!pendragon!news.msfc.nasa.gov!newsfeed.internetmci.com!howland.reston.ans.net!ix.netcom.com!netnews From: brunelle@ix.netcom.com(patrick e. brunelle ) Newsgroups: bionet.population-bio Subject: biomss Date: 14 Mar 1996 06:34:10 GMT Organization: Netcom Lines: 3 Message-ID: <4i8el2$8qv@cloner3.netcom.com> NNTP-Posting-Host: wck-ca9-25.ix.netcom.com X-NETCOM-Date: Wed Mar 13 10:34:10 PM PST 1996 I am interested in how the amount of fixed carbon is calculated for the earth and the amount of plant biomass produced per year. Are there any good data on these subjects? From owner-population-bio@net.bio.net Thu Mar 14 22:00:00 1996 Path: biosci!ihnp4.ucsd.edu!munnari.OZ.AU!news.ecn.uoknor.edu!news.ysu.edu!odin.oar.net!malgudi.oar.net!imci4!newsfeed.internetmci.com!in2.uu.net!lehua.ilhawaii.net!usenet From: Jay Hanson Newsgroups: bionet.population-bio Subject: Re: PopulLATION Date: Fri, 15 Mar 1996 08:47:39 +0000 Organization: http://csf.Colorado.EDU/authors/hanson/index.html Lines: 18 Message-ID: <31492EAB.2EF0@ilhawaii.net> References: <313B3A4E.4023@uncfsu.campus.mci.net> NNTP-Posting-Host: pm213.ilhawaii.net Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.01 (Win16; I) David L. Haas wrote: -> -> What do you mean "we humans" - If you were a lower life form like me you -> would rejoice in what humans are doing. Being rather unspecialized and -> having a short sexual life cycle my species is able to adapt where you -> parasitic animals cant! I only wish you were as powerful as you think you -> are. Unfortuantely your conceit is larger than your penis!! If by chance you -> do some real damage guess who will still be here when you are gone? Don't -> ask why I won't mention the name of my species I've seen what you can do if -> you don't like criters like me. Let's see, mmm [think, think, daaa, drool, loll] are you a politician? Jay --- EVERYTHING YOU WANTED TO KNOW ABOUT THE ECONOMY (but were afraid to ask): http://csf.Colorado.EDU/authors/hanson/ From owner-population-bio@net.bio.net Fri Mar 15 22:00:00 1996 Path: biosci!vaxtbio.uu.se!Eddy.van_der_Maarel From: Eddy.van_der_Maarel@vaxtbio.uu.se (Eddy van der Maarel) Newsgroups: bionet.population-bio Subject: Journal of Vegetation Science on WWW Date: 16 Mar 1996 08:31:22 -0800 Organization: Uppsala University Lines: 24 Sender: daemon@net.bio.net Distribution: world Message-ID: <199603161628.AA88228@columba.udac.uu.se> NNTP-Posting-Host: net.bio.net Dear members of the newsgroup, I would like to draw your attention to the new Home page of the Journal of Vegetation Science. Its address is: http://www2.passagen.se/opulus.com/jvspage/jvshome.htm The Journal of Vegetation Science publishes original articles, short notes and review articles in the field of vegetation science, both methodological and theoretical studies, and descriptive and experimental studies of plant communities and plant populations. The journal covers all current aspects of vegetation science, including phytosociology, vegetation theory, classification and ordination, pattern and process, structure and function, succession, palaeoecology, plant geography and population ecology. The journal also accepts thorough ecological descriptions of vegetation types and plant populations. In addition it publishes book reviews and notices of scientific meetings, as well as other news regarding the International Association for Vegetation Science. Prof. Eddy van der Maarel Dept. of Ecological Botany, Uppsala University,Sweden Email: Eddy.van_der_Maarel@vaxtbio.uu.se From owner-population-bio@net.bio.net Sun Mar 17 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!ns1.faseb.org!lamarck.sura.net!ra.nrl.navy.mil!news.math.psu.edu!psuvax1!uwm.edu!vixen.cso.uiuc.edu!newsfeed.internetmci.com!in1.uu.net!news2.new-york.net!not-for-mail From: Steve Grenard Subject: WWW Site-Natural History/Herpetology/Pop Biol Content-Type: text/plain; charset=us-ascii X-Nntp-Posting-User: (Unauthenticated) Content-Transfer-Encoding: 7bit Organization: HerpMed Message-ID: X-Mailer: Mozilla 1.2 (Windows; U; 16bit) Mime-Version: 1.0 X-Trace: 827113021/6964 X-Nntp-Posting-Host: herpmed.com Date: Mon, 18 Mar 1996 01:37:04 GMT Lines: 19 You can find many titles dealing with population biology of reptiles/amphibians as well as general natural history on the March 1996 issue at: http://www.xmission.com/~gastown/herpmed/phibia.htm -- ================================================= Steve Grenard e-mail: grenard@herpmed.com POB 40825 - Staten Island, NY 10304-0825 Tel/Fax: 1-718-447-6144 Web: http://www.herpmed.com/ Resp: http://www.xmission.com/~gastown/herpmed/respi.htm ================================================= From owner-population-bio@net.bio.net Mon Mar 18 22:00:00 1996 Path: biosci!bcm.tmc.edu!pendragon!news.msfc.nasa.gov!sgigate.sgi.com!swrinde!howland.reston.ans.net!news-e2a.gnn.com!newstf01.news.aol.com!newsbf02.news.aol.com!not-for-mail From: tandres399@aol.com (TAndres399) Newsgroups: bionet.population-bio Subject: "population crash" origin Date: 18 Mar 1996 22:15:22 -0500 Organization: America Online, Inc. (1-800-827-6364) Lines: 9 Sender: root@newsbf02.news.aol.com Message-ID: <4il8sa$cqm@newsbf02.news.aol.com> Reply-To: tandres399@aol.com (TAndres399) NNTP-Posting-Host: newsbf02.mail.aol.com Can anyone kindly tell me the first documented use of the term "population crash" in the carrying capacity sense. I suppose it goes back to the early wildlife studies, but I cannot find its actual origin (unless Malthus used such a term). If anyone knows, I would greatly appreciate an e-mail response. If I do get some responses of interest, maybe I can summarize the result in a future posting. (Either that or I will discover that this is common knowledge, held by everyone marginally functioning and interested in population biology, except for me.) Thank you, Tom Andres From owner-population-bio@net.bio.net Mon Mar 18 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in2.uu.net!news.ios.com!usenet From: RAMAS Newsgroups: bionet.population-bio Subject: demographic data needed: Vallisneria americana Date: 19 Mar 1996 14:05:37 GMT Organization: Internet Online Services Lines: 28 Message-ID: <4imevh$4cq@news.ios.com> NNTP-Posting-Host: ppp-4.ts-1.suf.idt.net Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.2 (Windows; U; 16bit) Hi I'm building a structured population model for Vallisneria americana (American wild celery, a submerged aquatic macrophyte) and I'm interested in including the effects of temporal variation in vital rates. If anyone knows where I could find the following information, I'd be very grateful: Measures of variation (e.g. temporal coefficient of variation, means for two or more successive years at the same site) for: number of rosettes per plant number of winter buds per plant/per rosette winter bud survival shoot establishment from winter buds Either for V. americana or even for related species e.g. V. spiralis. But I have a deadline of end of March 96. Thanks for taking the time to read this. Matt Spencer, Applied Biomathematics, 100 North Country Road, Setauket, NY 11733, USA. phone (516)751-4350 fax (516)751-3435 email ramas@gramercy.ios.com From owner-population-bio@net.bio.net Mon Mar 18 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!rutgers!uwm.edu!vixen.cso.uiuc.edu!newsfeed.internetmci.com!in2.uu.net!hearst.acc.Virginia.EDU!murdoch!faraday.clas.Virginia.EDU!emn8c From: emn8c@faraday.clas.Virginia.EDU (eric nielsen) Subject: U.S. only - Timber Salvage Rider X-Nntp-Posting-Host: faraday.clas.virginia.edu Message-ID: Sender: usenet@murdoch.acc.Virginia.EDU Organization: uva Date: Tue, 19 Mar 1996 07:42:30 GMT Lines: 136 Hi, If you know about the t.s.r. repeal effort and wouldn't mind my keeping you posted on what's up with it, skip to the first row of stars below. If you have no idea what I'm talking about, read on. If you are not interested in hearing about the most awful anti-environmental law ever passed, that erases 30 years of environmental progress and removes all protections from our very last old-growth forests and Roadless areas, or in knowing what YOU can do right NOW to counter this, stop reading now. Otherwise, please read to the end. This is the most critical time for the most critical environmental issue EVER, and you can help very easily. Last year Congress and the president passed the so-called "timber salvage rider," which nullifies all environmental protections for old-growth and other forests and allows multinational timber corporations to rape and pillage these PUBLIC and SACRED lands at their own discretion. The Endangered Species Act has been declared null and void. The Clean Air and Clean Water Acts no longer apply. And so on for all of the laws that have protected our last pristine public forests. The right of citizens to appeal these timber sales has been removed, despite the fact that taxpayers' money is used to finance the roadbuilding and other activities to make these forests accessible for destruction (an estimated loss of $500 million per year to taxpayers, with all the profits going into the bank accounts of giant corporations who don't care about their employees well-being or the lands they abuse -- they will simply move their operations overseas when our last old-growth forests are gone). The removal of the citizens' right to legally protest the management of THEIR OWN lands is what one would expect of a totalitarian society, not of the U.S. I am not an extremist. I like wood. It's much nicer than plastic. And there are plenty of forests in this country where logging is appropriate in my opinion. Forests where endangered species will not be driven to extinction by clearcutting. Forests that have already been cut-over, timber company land covered with pine plantations. But NOT the very last (4%) of the pristine forests that covered this continent just 140 years ago. NOT forests where all scientific evidence points to the total unsustainability of logging. The days of creating stumplands as far as the eye can see should be over now. We know better. Many of the places where such practices were common 100 years ago have never recovered. And what we are allowing now is WORSE. I have never taken public action on an issue like this. But I feel that I have no choice in this situation. This legislation was passed secretly, with no opportunity for citizen comment. And with hardly any debate in Congress. Clinton was strongarmed and gave in. However, if this issue gains visibility in the public eye, there is no way it can stay this way. There is nothing behind the timber salvage rider other than straight green cash. There is no accountability, no scientific evidence, no morality. It will not stand if we just express our opinions. I have taken it on myself to let as many people know as I possibly can, and to tell them how they can help. Helping is very easy. There are tollfree numbers to the capitol switchboard through which you can access any member of the House of Representatives or Senate's office. It doesn't matter if you aren't registered to vote although you should be! Call one of these numbers: 1-800-962-3524 or 1-800-972-3524 , ask for your representative's office and tell the person who answers that you support a total and immediate repeal of the timber salvage rider. Give them your name and tell them where you live and that you expect feedback from them on this issue. That way they will know you are serious. Then call the number again, and ask for your first senator's office. Then call it again and ask for your second senator's office. If you are registered or live permanently in Charlottesville or Albemarle County, your representative is L.F. Payne. If you are registered or live permanently in Virginia your senators are John Warner and Chuck Robb. If you don't know who your representative or senators are, tell the operator at the tollfree number where you live and they will tell you your representative's and senators' names. Next, although Pres. Clinton has publicly stated he supports a total repeal of the timber salvage rider (even though he signed it into law; funny thing, that!), he needs to be continuously reminded of the public support for his position on this. Clinton needs to be told: "Keep your promise and honor your commitment and your obligation to our environment by refusing to sign any appropriations legislation that does not fully and immediately repeal the timber salvage rider. Make clear to Congress that this repeal must be a component of any Appropriations bill you will sign. And continue to reject the anti-environmental riders that Congress keeps attaching anywhere they can. Hold firm against all new attacks on our environment." You can call and give him that message at (202) 456-1111 (select the "speak with human" option), (202) 456-1414, or (202) 456-6797. You can fax him that message to (202) 456-2883. ************************************************************** Thank you for reading this far. The last thing I am trying to do is set up a little email list for people that would like to receive updates on this issue, with more specific messages for congresspeople, etc., and the status of our efforts to repeal the timber salvage rider. I probably wouldn't send you more than one message every week or two so it won't be too much of a nuisance. This must be a continuing effort so I would appreciate a lot each and every one of you that are interested. I won't ask anything more of you than to make a tollfree call once in awhile if you don't want. So if you are interested in being on that list, please email me at emn8c@virginia.edu and let me know soon. Thanks a lot for your help. Birds sing in gratitude, forests bless you. No compromise in defense of mother earth. Eric Nielsen Charlottesville, Virginia *********************************************************** If you like, please send this message on to as many of your friends and acquaintances here or in other towns, states, places as you know or think would also care. No bad luck if you don't, not a chain letter. *********************************************************** From owner-population-bio@net.bio.net Tue Mar 19 22:00:00 1996 Path: biosci!ihnp4.ucsd.edu!munnari.OZ.AU!news.uwa.edu.au!disco.iinet.net.au!demeter.omen.com.au!p1000.f660.n690!f660.n690!James.Shotter Newsgroups: bionet.population-bio Distribution: world X-Comment-To: All From: james@hades.omen.com.au (James Shotter) Reply-To: james@hades.omen.com.au Date: Tue, 19 Mar 96 15:25:14 +0800 Subject: SPECIATION help required: Message-ID: <827220314@f660.n690.z3.ftn> Organization: The Perth Omen X-FTN-AREA: BIONET.POPULATION-BIO X-FTN-Tearline: Maximus 2.02 X-FTN-SEEN-BY: 690/660 X-FTN-PATH: 690/660 Lines: 19 Hello everyone, I need some help in seeking information regarding the role of reproductive isolation mechanisms in speciation. If someone could post me references, as so I can pursue and read, I will be appreciated. I have access to journals such as Nature, Annual Review of Genetics, Bioscience and Scientific American from libraries but I need to seek out only specific articles! If you can help me, please email me or perhaps share your information/references in this newsgroup. Thankyou in anticipation... Yours sincerely, James Shotter Darlington/Perth Western Australia From owner-population-bio@net.bio.net Tue Mar 19 22:00:00 1996 Path: biosci!rutgers!venus.sun.com!cs.utexas.edu!geraldo.cc.utexas.edu!slip-e-11.ots.utexas.edu!nels From: nelson guda Newsgroups: bionet.population-bio Subject: Summer Graduate Course in Tropical Field Biology Date: 20 Mar 1996 18:06:37 GMT Organization: ut austin Lines: 16 Distribution: world Message-ID: <4iphfd$ahk@geraldo.cc.utexas.edu> NNTP-Posting-Host: slip-e-11.ots.utexas.edu X-UserAgent: Version 1.1.3 X-XXMessage-ID: X-XXDate: Wed, 20 Mar 96 12:11:30 GMT Summer Graduate Course in Tropical Field Biology Dr. Lawrence Gilbert University of Texas, Austin This course is intended for graduate students interested in developing field projects in lowland tropical rainforest. The structure of the course is similar to OTS, but places more emphasis on independent project development. All work is carried out at the Sirena Biological Station in Corcovado National Park, Costa Rica. Only graduate students are eligible to apply. There are still 4-5 places available for non-UT students for the coming summer of 1996. Complete information on the course is available through the WWW at http://www.utexas.edu/courses/zoo384l. Please note that deadlines have been extended till mid-April. From owner-population-bio@net.bio.net Tue Mar 19 22:00:00 1996 Path: biosci!daresbury!not-for-mail From: Kerstin.Huss-Danell@njv.slu.se (Kerstin Huss-Danell) Newsgroups: bionet.population-bio Subject: postdoc Date: 20 Mar 1996 12:20:04 -0000 Lines: 27 Sender: lpddist@mserv1.dl.ac.uk Distribution: bionet Message-ID: <4iot5k$7dp@mserv1.dl.ac.uk> X-Sender: khdvo@sphagnum.njv.slu.se Original-To: pop-bio@dl.ac.uk POSTDOCTORAL FELLOWSHIP in Plant ecology/Plant ecophysiology in Ume=E5,= Sweden Financed by a new EC-project on Biodiversity and ecological processes in=20 terrestrial herbaceous ecosystems. Applicants should have a Ph D no more=20 than 5 years old in plant ecology, plant ecophysiology or related areas and= =20 experience in field work. Interest in plant-plant interactions or plant-soil= =20 interactions would be advantageous. The fellowship is available immediately= =20 for a period of 2 years. The project is a joint effort between Dept of Forest Ecology and Section for= =20 Crop Science, Dept of Agricultural Research for Northern Sweden, both within= =20 Swedish University of Agricultural Sciences (SLU), Ume=E5. Please contact Professor Peter H=F6gberg ( phone +46 90 165007, fax +46 90= =20 167750 or email: Peter.Hogberg@sek.slu.se) or Professor Kerstin Huss-Danell= =20 (phone +46 90 179411, fax +46 90 122195 or email:=20 Kerstin.Huss-Danell@njv.slu.se). From owner-population-bio@net.bio.net Wed Mar 20 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!agate!howland.reston.ans.net!swrinde!sgigate.sgi.com!nntp.coast.net!torn!csn!news-1.csn.net!ub!hood.cc.rochester.edu!uhura.cc.rochester.edu!sb008c From: sb008c@uhura.cc.rochester.edu (Seth Bordenstein) Subject: Re: Speciation help required: Message-ID: <1996Mar21.184611.11047@galileo.cc.rochester.edu> Sender: news@galileo.cc.rochester.edu Nntp-Posting-Host: uhura.cc.rochester.edu Organization: University of Rochester - Rochester, New York Date: Thu, 21 Mar 96 18:46:11 GMT Lines: 7 Try gathering some papers by Coyne and Orr, Butlin, T. Price; these should give you a start to your search... Seth R. Bordenstein sb008c@uhura.cc.rochester.edu CPU Box 272971 University of Rochester Rochester, Ny 14627 From owner-population-bio@net.bio.net Wed Mar 20 22:00:00 1996 Path: biosci!ihnp4.ucsd.edu!munnari.OZ.AU!news.ecn.uoknor.edu!news.uoknor.edu!news.nodak.edu!netnews1.nwnet.net!news.u.washington.edu!toby From: toby@u.washington.edu ('Toby' H D Bradshaw) Newsgroups: bionet.molbio.evolution,bionet.population-bio Subject: Re: SPECIATION help required: Date: 21 Mar 1996 16:55:36 GMT Organization: University of Washington, Seattle Lines: 34 Message-ID: <4is1m8$16r@nntp3.u.washington.edu> References: <827220314@f660.n690.z3.ftn> NNTP-Posting-Host: saul3.u.washington.edu NNTP-Posting-User: toby Xref: biosci bionet.molbio.evolution:4365 bionet.population-bio:1888 Try Coyne (1992) Nature 355:511-515. It helps if you subscribe to the belief that speciation is *defined* by reproductive isolation. :) Toby Bradshaw | (206)616-1796 (voice) Center for Urban Horticulture | (206)616-1826 (FAX) Box 354115 | toby@u.washington.edu University of Washington | You learn something new every Seattle WA 98195 | day if you start out dumb enough. In article <827220314@f660.n690.z3.ftn>, James Shotter wrote: >Hello everyone, > >I need some help in seeking information regarding the role of reproductive >isolation mechanisms in speciation. > >If someone could post me references, as so I can pursue and read, I will be >appreciated. I have access to journals such as Nature, Annual Review of >Genetics, Bioscience and Scientific American from libraries but I need to seek >out only specific articles! > >If you can help me, please email me or perhaps share your >information/references in this newsgroup. Thankyou in anticipation... > > Yours sincerely, > James Shotter > Darlington/Perth > Western Australia > > From owner-population-bio@net.bio.net Fri Mar 22 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!newsfeed.internetmci.com!news-feed.iguide.com!uunet!in2.uu.net!hearst.acc.Virginia.EDU!murdoch!faraday.clas.Virginia.EDU!mgk From: mgk@faraday.clas.Virginia.EDU (Mahlon G. Kelly) Subject: Re: SPECIATION help required: X-Nntp-Posting-Host: faraday.clas.virginia.edu Message-ID: Sender: usenet@murdoch.acc.Virginia.EDU Organization: uva References: <827220314@f660.n690.z3.ftn> Date: Sat, 23 Mar 1996 05:13:14 GMT Lines: 28 james@hades.omen.com.au writes: > Hello everyone, > > I need some help in seeking information regarding the role of reproductive > isolation mechanisms in speciation. > > If someone could post me references, as so I can pursue and read, I will be > appreciated. I have access to journals such as Nature, Annual Review of > Genetics, Bioscience and Scientific American from libraries but I need to seek > out only specific articles! > > If you can help me, please email me or perhaps share your > information/references in this newsgroup. Thankyou in anticipation... > > Yours sincerely, > James Shotter > Darlington/Perth > Western Australia > > Take a look at the various books and articles written by Ernst May. Perhaps the best is the book ANIMAL SPECIES AND EVOLUTION. Mayr originated the idea that geographic isolation is essential to speciation, and little has been added to his ideas. -- Associate Professor (Emeritus) University of Virginia mgk@darwin.clas.virginia.edu From owner-population-bio@net.bio.net Fri Mar 22 22:00:00 1996 Path: biosci!news.Stanford.EDU!nntp-hub2.barrnet.net!sgigate.sgi.com!imci3!imci4!newsfeed.internetmci.com!info.ucla.edu!psgrain!nntp.teleport.com!ip-pdx10-10 From: cnichols@teleport.com (Clay D. Nichols) Newsgroups: bionet.population-bio Subject: Seeking definition of U.S. Census "urban areas" Date: Sat, 23 Mar 96 19:35:20 GMT Organization: Teleport - Portland's Public Access (503) 220-1016 Lines: 8 Message-ID: <4j1jul$9e1@nadine.teleport.com> NNTP-Posting-Host: ip-pdx10-10.teleport.com X-Newsreader: News Xpress Version 1.0 Beta #3 I am trying to find the definition of the US Census' "urban areas" or "urbanized areas". Anyone know where I might find this? I've tried the U.S. Census homepage, with no luck. TIA -Clay From owner-population-bio@net.bio.net Sat Mar 23 22:00:00 1996 Path: biosci!news.Stanford.EDU!nntp-hub2.barrnet.net!sgigate.sgi.com!imci3!imci4!newsfeed.internetmci.com!howland.reston.ans.net!vixen.cso.uiuc.edu!catalpa.inhs.uiuc.edu!user From: dyanega@denr1.igis.uiuc.edu (Doug Yanega) Newsgroups: bionet.population-bio Subject: Re: SPECIATION help required: Date: 24 Mar 1996 00:37:41 GMT Organization: Illinois Natural History Survey Lines: 24 Message-ID: References: <827220314@f660.n690.z3.ftn> NNTP-Posting-Host: catalpa.inhs.uiuc.edu X-Newsreader: Value-Added NewsWatcher 2.0b27.1+ In article , mgk@faraday.clas.Virginia.EDU (Mahlon G. Kelly) wrote: > Take a look at the various books and articles written by Ernst > Mayr. Perhaps the best is the book ANIMAL SPECIES AND EVOLUTION. > Mayr originated the idea that geographic isolation is essential > to speciation, and little has been added to his ideas. I think there are a lot of subsequent authors who would beg to differ with your last comment, especially if you look at articles like Davis, J. & Nixon, K. 1992. Populations, genetic variation, and the delimitation of phylogenetic species. Systematic Biology 41: 421-435. Seems that quite a few folks don't define species based on reproductive isolation any more. Doug Yanega (dyanega@mail.inhs.uiuc.edu) Illinois Natural History Survey, 607 E. Peabody Dr. Champaign, IL 61820 USA (217) 244-6817 fax:(217) 333-4949 affiliate, University of Illinois Dept. of Entomology http://www.inhs.uiuc.edu:80/~dyanega/my_home.html "There are some enterprises in which a careful disorderliness is the true method" - Herman Melville, Moby Dick From owner-population-bio@net.bio.net Sun Mar 24 22:00:00 1996 Path: biosci!biosci!not-for-mail From: cpianot@MTS.Net (Tom Cohe) Newsgroups: bionet.agroforestry,bionet.biology.grasses,bionet.biology.n2-fixation,bionet.biology.tropical,bionet.general,bionet.plants,bionet.plants.education,bionet.population-bio,sci.bio.botany,sci.bio.misc,tw.bbs.sci.biology Subject: herbarium speciman exchange offer Date: 24 Mar 1996 21:14:37 -0800 Organization: MTS Internet Services Lines: 29 Sender: daemon@net.bio.net Distribution: world Message-ID: <4j1220$17h4@bottom.MTS.Net> NNTP-Posting-Host: net.bio.net Xref: biosci bionet.agroforestry:2947 bionet.biology.grasses:532 bionet.biology.n2-fixation:457 bionet.biology.tropical:1757 bionet.general:20675 bionet.plants:10660 bionet.plants.education:605 bionet.population-bio:1894 sci.bio.botany:1628 sci.bio.misc:2614 I am posting the following exchange offer on behalf of Walter Krivda of The Pas, Manitoba, CANADA. Anyone interested in exchanging material with Walter can contact Walter directly, or contact me at my e-mail address. I will forward your message to Walter. Tom Cohoe, cpianot@mts.net ------------------------------------------------------------- For exchange - herbarium specimans from the Canadian Hudsonian zone. Wanted to exchange for all plant species from any source. My specimans are unmounted with the usual data label. All specimans are identified. Approx. 400 species currently available. Material is being used for plotting geographic ranges of species distributions. Walter Krivda, Box 864, The Pas, Manitoba, R9A-1K8, CANADA. tel. 204-623-3584. From owner-population-bio@net.bio.net Wed Mar 27 22:00:00 1996 Path: biosci!rutgers!gatech!swrinde!cssun.mathcs.emory.edu!hobbes.cc.uga.edu!ja4.genetics.uga.edu!user From: wollenberg@bscr.uga.edu (Kurt Wollenberg) Newsgroups: bionet.population-bio Subject: Coancestry calculation software Date: Wed, 27 Mar 1996 23:56:42 -0400 Organization: Dept. of Genetix/Univ. of GA Lines: 11 Message-ID: NNTP-Posting-Host: ja4.genetics.uga.edu Here in the lab I have been asked to calculate a matrix of pairwise coancestry coefficients (0.5 raised to the power of the number of generations until they share a common ancestor, summed over all paths to common ancestors) for a large genealogy. Preferring not to reinvent the wheel, I was wondering if anyone out on the net could direct me to existing programs that might perform these calculations. Thanks. -- Kurt Wollenberg, gradual student You don't know anything about wollenberg@bscr.uga.edu genetics, Leese. It goes boy, Genetics Department girl, boy, girl. University of Georgia Bartholemew J Simpson From owner-population-bio@net.bio.net Wed Mar 27 22:00:00 1996 Newsgroups: bionet.population-bio Path: biosci!agate!howland.reston.ans.net!vixen.cso.uiuc.edu!newsfeed.internetmci.com!in1.uu.net!EU.net!ieunet!news.tcd.ie!cmegan.gen.tcd.ie!user From: dmachugh@mail.tcd.ie (David MacHugh) Subject: Linkage Disequilibrium & Haplotypes Message-ID: Sender: usenet@news.tcd.ie (TCD News System ) Organization: Genetics Department, Trinity College, Dublin 2 Date: Thu, 28 Mar 1996 13:25:10 GMT Lines: 36 Hi, I have a query about using the GENEPOP program (Raymond & Rousset [1995] J. Hered. 86(3): 248-49). We have haplotypic data from a number of microsatellites typed in human males on the X-chromosome. Basically we would like to determine the extent of linkage disequilibrium among these markers (STRs) using the GENEPOP program. Does anyone know of any theoretical objections to recoding the data as pseudo-homozygotes and testing for LD? Perhaps someone might know a more appropriate method for dealing with this type of data. Data format: Individual 1: 120 145 130 210 151 Individual 2: 122 143 134 208 157 etc. Thanks in advance, David MacHugh, Genetics Department, Trinity College, Dublin 2. IRELAND. E-mail: dmachugh@mail.tcd.ie From owner-population-bio@net.bio.net Wed Mar 27 22:00:00 1996 Path: biosci!ns1.faseb.org!lamarck.sura.net!newsfeed.internetmci.com!in2.uu.net!newsflash.concordia.ca!news.nstn.ca!coranto.ucs.mun.ca!plato.ucs.mun.ca!sclancy From: Sean Clancy Newsgroups: bionet.population-bio Subject: Mortalility in Trout Date: Thu, 28 Mar 1996 11:14:02 -0330 Organization: Memorial University of Newfoundland Lines: 20 Message-ID: NNTP-Posting-Host: plato.ucs.mun.ca Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: sclancy@plato.ucs.mun.ca Looking for any information on how to determine mortalily rates of a brook trout in a headwater lake system? Specificcally, how to determine between natural age specific mortality in lakes and streams and streamward migrations in the fall? thanks sean. send all replies to the above address. hy does a dog lick itself? Because it can! --------------------------------------------------------------------------- Sean Clancy, BSc(Biology 4-year). __===////====//___ /| Memorial University of Newfoundland - o ---/| St. John's, Newfoundland. A1B 3X9 XXXX }}}------==========| Phone: (709) 737-8301 "====\\\______\\ \| From owner-population-bio@net.bio.net Sat Mar 30 22:00:00 1996 Path: biosci!daresbury!nntp-trd.UNINETT.no!newsfeed.sunet.se!news01.sunet.se!sunic!mn6.swip.net!plug.news.pipex.net!pipex!tank.news.pipex.net!pipex!newsfeed.internetmci.com!in2.uu.net!news.new-york.net!earth.njcc.com!news From: Gary Hammell Newsgroups: bionet.population-bio Subject: New Web Site: The David Suzuki Foundation Date: Sat, 30 Mar 1996 23:42:36 -0800 Organization: New Jersey Computer Connection, Lawrenceville, NJ Lines: 10 Message-ID: <315E376C.3B08@pluto.njcc.com> NNTP-Posting-Host: ts2-47.njcc.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 2.0 (Win95; I; 16bit) The David Suzuki Foundation is a federally registered Canadian charity working to design a future in which humans live within the planet's productive capacity. It is finding and supporting practical steps to make that vision a reality. The David Suzuki Foundation is proud to announce its presence on the WWW. If you would like to visit the site, the URL is as follows: http://www.vkool.com/suzuki/