From owner-population-bio@net.bio.net Thu Apr 01 23:00:00 1993 Path: biosci!agate!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!uicvm.uic.edu!yang.earlham.edu!jessec From: jessec@yang.earlham.edu Newsgroups: bionet.population-bio Subject: Human population growth question Message-ID: <1993Apr1.215017.22421@yang.earlham.edu> Date: 2 Apr 93 02:50:17 GMT Organization: Earlham College, Richmond, Indiana Lines: 19 Hello-- I'm a layperson with some exposure to the sciences. In the human population-biology section of my eco-bio class a while back, I recall seeing at least one possible projection of future population growth that had the world population peaking at some incredible level, dipping a bit, then *levelling off* at some horrible number-- 12 billion, I think. A sort of plateau effect. What I can't remember is: who did this projection? When? And how many population biologists think this is possible? If anyone can fill in the blanks, or wishes to comment on the general reliability of such models, I'm all ears-- appreciative in advance-- --Jesse. "When I went to see *Blade Runner*, I panicked and fled from the theater." --William Gibson From owner-population-bio@net.bio.net Fri Apr 02 23:00:00 1993 Path: biosci!uwm.edu!rpi!utcsri!newsflash.concordia.ca!mizar.cc.umanitoba.ca!etaylor From: etaylor@ccu.umanitoba.ca (Euan R. Taylor) Newsgroups: bionet.population-bio Subject: Re: Teaching math to ecologists Message-ID: Date: 3 Apr 93 17:52:08 GMT References: <0096A482.45568440.19038@uamont.edu> Sender: news@ccu.umanitoba.ca Distribution: bionet Organization: University of Manitoba, Winnipeg, Canada Lines: 330 Nntp-Posting-Host: ccu.umanitoba.ca In <0096A482.45568440.19038@uamont.edu> zeide@UAMONT.EDU writes: >In brief: > This review is the first step of a larger project, writing a >text for undergraduate ecologists and foresters. We believe that >ecologists, rather than mathematicians, are better equipped to >convey the beauty and relevance of mathematics to our students. >We hope that our text will be more inspiring than those written >by professional mathematicians. Yet, it will not be just a >cookbook spiced with ecological applications. Our approach to >this project is outlined below. > ------------------------------------------------------ > We, ecologists, differ greatly in our attitude toward >mathematics. (By mathematics I mean everything above high school >arithmetic, algebra, and cookbooked defensive statistics.) Many >ecologists hate all this differentiation and integration, maybe >because they fail to understand it. For the same reason, others, >like Darwin, hold math in awe. Some of us even dabble with >differential equations, again usually without knowing much about >what we are doing. >attempt to instill mathematical knowledge in students of biology >and its applied branches such as forestry. This experiment has >been conducted with an awful number of replications and variants >in hundreds of institutions of higher education throughout the >world. It makes sense to pause and look at the results of this >experiment. No statistical analysis is required to see that math >education of ecologists has been a failure. > This problem is not limited to the United States. I received >all my degrees in Moscow, Russia, and can confirm that, although >mathematical training there was more vigorous and extensive, it >was also a complete waste. I retained nothing about calculus from >college. If I know anything about it, it is because later on I >learned calculus anew on my own. My interest was sparked by a >very simple calculus text for votech schools which I happened >across during a boring vacation. While reading and even enjoying >this elementary book, I was amazed that I had forgotten even >introductory concepts. The problem was not with my memory. More >than just passive forgetting was involved. It was as if the brain >actively, though subconsciously, had expunged all those dry >abstract concepts as antithetical to our ecological vocation. > Yet, these concepts, after surmounting the barrier of >initial rejection, appear as the most beautiful and relevant >prerequisites of thinking in any science, ecology including. > Why have mathematicians failed to teach us? > There is a genuine lack of understanding between ecologists >and mathematicians. It appears not only in teaching but in >research as well. A biologist's way of thinking is different from >that of a mathematician and, despite numerous attempts, examples >of productive cooperation between biologists and mathematicians >are as rare as the number of ecologists who mastered math as a >university student. Those who create math and regard it as an end >in itself are not necessarily the best at using it as a means to >an end. > Analysis of this problem deserves a special inquiry, rather >than offhand remarks, because it may help to find better ways of >communication. Basically, there are two explanations. One is that >in principle biology, unlike physics, cannot be explained in >mathematical terms. These areas of knowledge belong to two >inimical and mutually incomprehensible worlds. According to this >explanation, when mathematicians venture to say something about >biology, they are always wrong or, at best, irrelevant. Trofim >Lysenko was the best known champion of this view in the fifties >and Ernst Mayr is at present. > Mayr, an outstanding biologist who upon retirement turned to >the history and philosophy of science, criticizes math in the >course of his struggle with what he calls typological thinking. >Instead, he advocates population thinking that "is a peculiarly >biological concept, alien to the thinking of the physical >scientist" (Mayr 1982, p. 487). Biology and historical sciences, >he believes, deal with systems too complex to be expressed in >mathematical formulas. Only misconceptions" can be produced as a >result of "ill-advised application of mathematics" in biology. >Equally expressive are comments like "It might be mentioned, >incidentally, how misleading it is to refer to mathematics as the >"queen of the sciences"." His thorough knowledge of the history >of science allowed him to state that "even Kant, by 1790, had >abandoned his subservience to mathematics. If the invalidity of >the mathematical ideal of science had not been obvious before, it >certainly became so with the publication of the Origin of >Species" (Mayr 1982, p. 41). Besides these philosophical issues, >Mayr demonstrated, using the argument between Darwin and Lord >Kelvin, that biologists might be better at calculations than >physicists. > Though less knowledgeable and articulate than Mayr, Lysenko >was more effective: he simply prohibited all biologically-related >math. Books on the subject were recalled from all libraries in >the USSR and burned (not publicly). Teachers of this criminal >discipline were exiled, fired, or, after proper public >repentance, forgiven. It is curious that, despite great >differences between the Harvard professor and Stalin's henchman, >both used similar derisive terminology when referring to Mendel's >typological theory of inheritance. Mayr calls it "bean-bag >genetics", while Lysenko dubbed it "peas' laws." > An alternative explanation of our poor comprehension of math >is less radical. It deals with the shortcomings of disciples >rather than disciplines. These weaknesses are relative. They can >be viewed as opposite sides of the assets of the respective >disciplines. Ecologists have a better, though intuitive, grasp of >complicated reality such as ecosystems. But their theories and >explanations sometimes lack coherence and discipline. The strict >rigor and precision, the hallmark of a mathematician, when >applied to ecological problems, too often deteriorates into a >concern about technicalities. These details appear irrelevant to >an ecologist for whom math is not the end, but only a means. > We often casually say that sizes of plants or animals are >normally distributed. This statement would not go unnoticed by a >mathematician. "Do you really mean that some rabbits have a >negative weight?" - he or she would ask. A more serious >predicament arises when we try to discuss our research. "Your >problem is poorly defined" (or "ill-posed") is the most common >response by a mathematician. As a rule, the cooperation stops >here. In rare cases when it continues, a mathematician using >impeccably correct methods will produce an outlandish answer, >while an ecologist employing hopelessly faulty reasoning (and >elusive intuition) will produce something more sensible. > The difference in the level of development of ecology and >math does not foster understanding and cooperation. Ecosystems >might be extremely complex and their explanation may require very >sophisticated math, much of which is yet to be discovered. >However, the present extent of our knowledge of ecological >complexity is limited. From a mathematician's viewpoint, our >greatest achievements so far have been the comprehension of >exponentiation (as is the case with natural selection) and >elementary combinatorics (Mendel's genetics). This disparity >between developmental levels makes cooperation tenuous. > Regardless of the reasons and explanations for this lack of >mutual understanding, we must recognize that it does exist and >that we should do something about it. > What should we do? > If we have failed to learn from mathematicians, we should >try something else: teach ourselves. Ecologically-inspired math >is too important to be confined to esoteric graduate courses. It >should be taught right at the beginning of our university >education (and even prior) by mathematically-minded ecologists. >Mathematicians will remain indispensable as consultants. They are >at their best when they teach future mathematicians rather than >biologists and engineers. > To start with, we need to write a good text for our >undergraduates. Actually, many texts should be written in order >to create the competitive environment needed to facilitate the >evolution of our mathematical education. While there are decent >books on mathematical ecology for graduate biology students, >undergraduate texts are commonly written by mathematicians. Our >text will be devoted to undergraduate ecological From owner-population-bio@net.bio.net Sat Apr 03 23:00:00 1993 Path: biosci!agate!ames!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.uoregon.edu!news.u.washington.edu!hardy.u.washington.edu!xia From: xia@hardy.u.washington.edu (Xuhua Xia) Newsgroups: bionet.population-bio Subject: Questions on hatching of avian eggs. Message-ID: <1pmvcoINNjd5@shelley.u.washington.edu> Date: 4 Apr 93 15:38:00 GMT References: <0096A482.45568440.19038@uamont.edu> Distribution: bionet Organization: University of Washington, Seattle Lines: 12 NNTP-Posting-Host: hardy.u.washington.edu I should appreciate information on: 1) the relationship between egg size and hatching time (the period from the date when the egg is laid to the date when it hatches, or the period from the beginning of incubation to the date of hatching). I am not familiar with avian literature. A citation should be very helpful. 2) the cost of hatching after clutchmates. Thanks in advance. Xuhua From owner-population-bio@net.bio.net Sun Apr 04 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!wupost!uunet!newsflash.concordia.ca!nstn.ns.ca!news.ucs.mun.ca!kean.ucs.mun.ca!lhowes From: lhowes@kean.ucs.mun.ca Newsgroups: bionet.population-bio Subject: Re: Questions on hatching of avian eggs. Message-ID: <1993Apr4.214908.1@kean.ucs.mun.ca> Date: 5 Apr 93 01:19:08 GMT References: <0096A482.45568440.19038@uamont.edu> <1pmvcoINNjd5@shelley.u.washington.edu> Sender: usenet@news.ucs.mun.ca (NNTP server account) Distribution: bionet Organization: Memorial University. St.John's Nfld, Canada Lines: 49 In article <1pmvcoINNjd5@shelley.u.washington.edu>, xia@hardy.u.washington.edu (Xuhua Xia) writes: > I should appreciate information on: > > 1) the relationship between egg size and hatching time (the period from > the date when the egg is laid to the date when it hatches, or the period > from the beginning of incubation to the date of hatching). I am not > familiar with avian literature. A citation should be very helpful. > > 2) the cost of hatching after clutchmates. > > Thanks in advance. > > Xuhua > I happen to be writing my thesis right now with some reference to that very topic! Of course this depends on the species of bird that you are interested in. I happen to be working with Common and Arctic terns, and so can give you a few refreences on these species. In general... Larger eggs in the clutch are the eggs that are laid first. They have the greatest chance at survival for several reasons, more of the females resourses, the first to hatch therefore getting a head start on sibs etc.... terns hatch in about 23 days or so. First eggs often are not incubated as soon as they are laid.. clutches are completed before attentive incubation begins. The cost of hatching after sibs is ofetn a matter of life and death in terns which often lay 3 eggs but are lucky to fledge 1 chick. third chicks are smaller and do not recieve the continued incubation that they need upon hatching since parents are off foraging. Also larger, older chicks out compete younger chicks for food. Refs Nisbet, I.C.T. 1978. Dependance of fledging success on egg-size, parental performance and egg comp....Ibis 120: 207-215. Quinn, J.S. and R.D.Morris 1986. Intraclutch egg weight and chick survival... Can. J. Zool. 64:2116-2122 Bollinger, Bollinger and Malecki 1990. tests of three hyps of hatching asynchrony in the common tern the Auk 107: 696-706 Wiggins D.A. 1989 Consequences of varieation in brood size on the allocation of parental care... Can. J. zool. 67:2411-2413. if you need more info than this feel free to contact me. Les! From owner-population-bio@net.bio.net Sun Apr 04 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!wupost!darwin.sura.net!newsserver.jvnc.net!yale.edu!news.yale.edu!YaleVM.YCC.Yale.Edu!NEIMANF From: NEIMANF@YaleVM.YCC.Yale.Edu Newsgroups: bionet.population-bio Subject: Expected change under drift Message-ID: <16BA6122C8.NEIMANF@YaleVM.YCC.Yale.Edu> Date: 5 Apr 93 00:40:40 GMT Sender: news@news.yale.edu (USENET News System) Organization: Yale University Lines: 17 Nntp-Posting-Host: yalevm.ycc.yale.edu Hi Folks, Hope you all have the patience to point a tyro to a reference or two. I'd like to hunt down a derivation of the amount of change (say, the squared euclidean distance) to be expected between successive generations in a population containing multiple (>2) alleles at a single locus, under equilibrium conditions where drift and mutation balance each other out. The answer is going to scale inversely with N(e), but I'd really like to see the maths by which it is worked out. Thanks very much for the help. Fraser Neiman Academic Computing User Services Yale University From owner-population-bio@net.bio.net Tue Apr 06 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!uunet!utcsri!newsflash.concordia.ca!mizar.cc.umanitoba.ca!etaylor From: etaylor@ccu.umanitoba.ca (Euan R. Taylor) Newsgroups: bionet.population-bio Subject: Re: Questions on hatching of avian eggs. Message-ID: Date: 7 Apr 93 18:04:12 GMT References: <0096A482.45568440.19038@uamont.edu> <1pmvcoINNjd5@shelley.u.washington.edu> <1993Apr4.214908.1@kean.ucs.mun.ca> Sender: news@ccu.umanitoba.ca Distribution: bionet Organization: University of Manitoba, Winnipeg, Canada Lines: 56 Nntp-Posting-Host: ccu.umanitoba.ca In <1993Apr4.214908.1@kean.ucs.mun.ca> lhowes@kean.ucs.mun.ca writes: >In article <1pmvcoINNjd5@shelley.u.washington.edu>, xia@hardy.u.washington.edu (Xuhua Xia) writes: >> I should appreciate information on: >> >> 1) the relationship between egg size and hatching time (the period from >> the date when the egg is laid to the date when it hatches, or the period >> from the beginning of incubation to the date of hatching). I am not >> familiar with avian literature. A citation should be very helpful. >> >> 2) the cost of hatching after clutchmates. >> >> Thanks in advance. >> >> Xuhua >> >I happen to be writing my thesis right now with some reference to that very >topic! >Of course this depends on the species of bird that you are interested in. >I happen to be working with Common and Arctic terns, and so can give you a >few refreences on these species. >In general... Larger eggs in the clutch are the eggs that are laid first. >They have the greatest chance at survival for several reasons, more of the >females resourses, the first to hatch therefore getting a head start on >sibs etc.... terns hatch in about 23 days or so. First eggs often are not >incubated as soon as they are laid.. clutches are completed before >attentive incubation begins. The cost of hatching after sibs is ofetn a >matter of life and death in terns which often lay 3 eggs but are lucky to >fledge 1 chick. third chicks are smaller and do not recieve the continued >incubation that they need upon hatching since parents are off foraging. >Also larger, older chicks out compete younger chicks for food. I seem to rememmber form somewhere that in birds of prey where there are a relatively small number of chicks and there is a heirarchy or competition for parental feeding, the female although smaller than the male chicks actually develops its motor skills much faster allowing it to compete successfully for food. Is that right, and if so is there a similar situation outside of these types of species? chers euan ps. I'm not an ornithologist, so sorry if this is a stupid question. Usual disclaimers. These are my own opinions andprobably nobody else's. etaylor@ccu.umanitoba.ca "All great truths begin life as blasphemies" George Bernard Shaw -- Usual disclaimers. These are my own opinions andprobably nobody else's. etaylor@ccu.umanitoba.ca "All great truths begin life as blasphemies" George Bernard Shaw From owner-population-bio@net.bio.net Wed Apr 07 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!swrinde!sdd.hp.com!zaphod.mps.ohio-state.edu!uwm.edu!msuinfo!netnews.upenn.edu!lepomis.psych.upenn.edu!barkdoll From: barkdoll@lepomis.psych.upenn.edu (Edwin Barkdoll) Newsgroups: bionet.population-bio Subject: Re: Questions on hatching of avian eggs. Message-ID: <118899@netnews.upenn.edu> Date: 8 Apr 93 02:38:42 GMT References: <1pmvcoINNjd5@shelley.u.washington.edu> <1993Apr4.214908.1@kean.ucs.mun.ca> Sender: news@netnews.upenn.edu Distribution: bionet Organization: University of Pennsylvania Lines: 17 Nntp-Posting-Host: lepomis.psych.upenn.edu In article etaylor@ccu.umanitoba.ca (Euan R. Taylor) writes: >I seem to rememmber form somewhere that in birds of prey where there are a >relatively small number of chicks and there is a heirarchy or competition >for parental feeding, the female although smaller than the male chicks >actually develops its motor skills much faster allowing it to compete >successfully for food. Is that right, and if so is there a similar >situation outside of these types of species? Part of this seems to be backwards. Female raptors tend to be larger than the males, some dramatically larger. Craighead and Craighead (1956) _Hawks, Owls and Wildlife_ reported that the heavier females could be detected by 5-6 days of age. -- Edwin Barkdoll barkdoll@lepomis.psych.upenn.edu eb3@world.std.com From owner-population-bio@net.bio.net Thu Apr 08 23:00:00 1993 Path: biosci!daresbury!buzz.bmc.uu.se!corax.udac.uu.se!sunic!uunet!europa.eng.gtefsd.com!gatech!destroyer!cs.ubc.ca!utcsri!utnut!torn!csd.unb.ca!news.ucs.mun.ca!nstn.ns.ca!dragon.acadiau.ca!891666t From: 891666t@dragon.acadiau.ca (Trish Turliuk) Newsgroups: bionet.population-bio Subject: FRACTAL DIMENSION ...anyone? Message-ID: <1993Apr9.061032.4860@dragon.acadiau.ca> Date: 9 Apr 93 06:10:32 GMT Organization: Acadia University Lines: 33 I'm a student of ecology and have recently become interested in fractal geometry. (I've done a *great* deal of reading in this past month) I've decided to apply it in the field. The substrate is a mudflat in which many organisms inhabit. Organisms that build their homes in the mud change it with their secretions and thereby "strengthen" it. In the spring and summer, a marine invertebrate, _Corophium volutator_ is extremely abundant. My hypothesis is that there will be a different fractal dimension where C.v are abundant than where they are not found. My problem is in the logistics of the study. I assume that the d will lie between 2 and 3 and I'm not sure exactly how to measure it. (I'm more familiar with the 1-2 fractal measuring techniques) Alternatively, I may focus my study on the changing distribution of the C.v (their u-shaped tubes) over time. The literature suggests that the distribution moves from being clumped, or patchy to uniformity at peak densities. However, the method they use to reveal this is the variance-to-mean ratio, which, to my understanding, would be an inappropriate measure if dimension changes. Any advice would be greatly appreciated. Trish Turliuk trish.turliuk@acadiau.ca Acadia University Wolfville, Nova Scotia Canada From owner-population-bio@net.bio.net Thu Apr 08 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!wupost!uunet!pipex!uknet!uknet!daresbury!daresbury!news From: Neve@ecol.ucl.ac.be (Gabriel NEVE) Newsgroups: bionet.population-bio Subject: Access to "Entomological Review"? Message-ID: <1993Apr9.131238.8512@gserv1.dl.ac.uk> Date: 9 Apr 93 13:58:02 GMT Sender: GANEVE@be.ac.ucl.rice.Vm1 Distribution: bionet Organization: Universite Catholique de Louvain Lines: 41 Original-To: pop-bio@uk.ac.daresbury Dear networkers, Here is a request on the verge of our usual subject requests. A Lithuanian colleague of mine is writing a paper using references to papers originally published in Russian in "Entomologicheskoye obozreniye", and he would like to join the exact references to these papers in the English translation of this journal, published in the USA under the name "Entomological Review". Here are the seeked references. If any of you could find the exact references (English titles and page numbers etc), I would be most grateful. Unfortunately, Entomological Review is not available in any University Library in Belgium... 1.Noreika, RV, Review of the Gracillariid moths (Lepidoptera) of Turkmenia. Ent. Oboz. 1991, 70, (2), 429-443 2. Sruoga, VA, On the fauna of the Gramineal Elachistid moths (Lepidoptera, Elachistidae) of the USSR. Ent. Oboz., 191, 70 (2), 444-454 3. Puplesis RK, Arutyunova NV. Two new species of Nepticulid moths ( Lepidoptera, Nepticulidae), mining apple-tree leaves, from Tajikistan. Ent. Oboz., 1991, 70 (3), 571-573 4. Noreika RV, Puplesis RK. Description of new species of moths of the family Gracillariidae (Lepidoptera) from Azerbaijan and Middle Asia and synonymization of Gracillaria impictipennella Grsm. Ent. Oboz. 1992, 71 (2), 414-421 5. Sruoga VA, Puplesis RK. New species of Gramineal Elachistid moths (Lep., Elachistidae) from Middle Asia and Kazakhstan. Ent. Oboz. 1992, 71 (2), 428-441. Thanks, Gabriel "The death of the butterfly is the ine drawback to an entomological career" Margaret E. Fountaine (1892) ======================================================================= Gabriel NEVE Unite d'Ecologie et de Biogeographie EMAIL: NEVE@ECOL.UCL.AC.BE Universite catholique de Louvain or GANEVE@BUCLLN11.BITNET Croix du Sud 5 Fax : +32/10/473490 B-1348 Louvain-la-Neuve Tel : +32/10/473495 Belgium From owner-population-bio@net.bio.net Fri Apr 09 23:00:00 1993 Path: biosci!uwm.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!uunet!think.com!yale.edu!news.yale.edu!YaleVM.YCC.Yale.Edu!NEIMANF From: NEIMANF@YaleVM.YCC.Yale.Edu Newsgroups: bionet.population-bio Subject: Re: FRACTAL DIMENSION ...anyone? Message-ID: <16BAC5AEC.NEIMANF@YaleVM.YCC.Yale.Edu> Date: 10 Apr 93 10:27:47 GMT References: <1993Apr9.061032.4860@dragon.acadiau.ca> Sender: news@news.yale.edu (USENET News System) Organization: Yale University Lines: 48 Nntp-Posting-Host: yalevm.ycc.yale.edu In article <1993Apr9.061032.4860@dragon.acadiau.ca> 891666t@dragon.acadiau.ca (Trish Turliuk) writes: > >I'm a student of ecology and have recently become interested in fractal >geometry. (I've done a *great* deal of reading in this past month) > > >I've decided to apply it in the field. > >The substrate is a mudflat in which many organisms inhabit. Organisms that >build their homes in the mud change it with their secretions and thereby >"strengthen" it. In the spring and summer, a marine invertebrate, >_Corophium volutator_ is extremely abundant. > >My hypothesis is that there will be a different fractal dimension where >C.v are abundant than where they are not found. > >My problem is in the logistics of the study. I assume that the d will lie >between 2 and 3 and I'm not sure exactly how to measure it. (I'm more >familiar with the 1-2 fractal measuring techniques) > > Hi, This was an area I did work in a while back, but am no longer current. So be warned! One approach to this problem is to use the slope of the log-log semivariogram (b) to estimate the fractal dimension (d): d1(4-b)/2. A classic article is Burrough 1983 (J. Soil Sci 34:577-597). Another approach to the problem is described by Clark 1986 (Computers and Geosciences 12:713-722). I liked the semi-variogram approach because it is based on a graphical display of autocorrelation structure, which is a helpful exploratory tool. Hope this helps a bit. Best, F. ------------------------------------------------------------------------------- Fraser Neiman | Academic Computing User Services | BITNET: neimanf@yalevm Yale University | INTERNET: neimanf@yalevm.ycc.yale.edu From owner-population-bio@net.bio.net Wed Apr 14 23:00:00 1993 Path: biosci!daresbury!doc.ic.ac.uk!agate!spool.mu.edu!darwin.sura.net!news-feed-1.peachnet.edu!umn.edu!umeecs!zip!bagchi From: bagchi@eecs.umich.edu (Ranjan Bagchi) Newsgroups: bionet.population-bio,sci.fractals,sci.physics Subject: Frequency Internment Message-ID: Date: 14 Apr 93 22:04:32 GMT Sender: news@zip.eecs.umich.edu (Mr. News) Distribution: bionet Organization: Recreational Creationists, Inc. Lines: 19 Xref: biosci bionet.population-bio:417 sci.fractals:1450 sci.physics:13852 Hi folks, I'm working with a variant of the Gilpin attractor (Lotka-Volterra eqns with logistic density dependence) where I add in an extra oscillator. I'm varying the properties of the oscillator to investigate effect on the other equations. (Sorry, I'm being fairly imprecise.. I don't exactly understand what I'm doing, but hopefully you get the idea.) Does anyone know of any references to this kind of stuff? -rj -- Ranjan Bagchi Ranjan.Bagchi@umich.edu oo oooo o oo ooo oo oo oo o o oooo ooo o o oooooooo From owner-population-bio@net.bio.net Wed Apr 14 23:00:00 1993 Path: biosci!daresbury!buzz.bmc.uu.se!corax.udac.uu.se!sunic!uunet!haven.umd.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!ux1.cso.uiuc.edu!news.iastate.edu!iscsvax.uni.edu!yu0024 From: yu0024@iscsvax.uni.edu Newsgroups: bionet.population-bio Subject: I NEED HELP Message-ID: <1993Apr14.234858.12383@iscsvax.uni.edu> Date: 15 Apr 93 05:48:58 GMT Organization: University of Northern Iowa Lines: 53 I am sitting here for some hours try to start a paper, which is the requirment for population ecology. Without any ideal come to my mind, I think maybe it is good ideal to post the requirment here, and hope you can disscuss your ideal with me. Here is the story Disscuss one species, any species you chose, and then describe followings: Evolution Genetics Inbreeding Genetic disease Physical Factors, how the species deal w/ the factors Temperature Moisture others (pH, atmosphere, soil, nutrition...... Habitat selection, whate and why Physical biological Population Processes Birth rate Death Rate Immigration/emigration Total Growth rate Present Population size Cycles Population Interactions Competition Predation Other (mutualism, commensalism, amensalism.... Conservation Habitate Corridors Transplants Harvest consideration Pest Control Management Recommendation For each topic, you may found tons of literature, the difficult is found all the imformation for one species-----that's difficult I guess Drosophila is the species to talk, since the research on this guy is detailed. But I am plant man, not familiar with it, the libary here is limited So if you have any information, please e-mail me, and please tell me the literature you cited if you do cited one. If you think any other species is more suitable, please let me know. Any comments or suggestion will be greatly appreciated Thanks advance From owner-population-bio@net.bio.net Wed Apr 21 23:00:00 1993 Path: biosci!GENETICS.WASHINGTON.EDU!joe From: joe@GENETICS.WASHINGTON.EDU (Joe Felsenstein) Newsgroups: bionet.population-bio Subject: SOME AVAILABLE PHYLOGENY PROGRAMS (LONG) Message-ID: <9304222230.AA27807@evolution.genetics.washington.edu> Date: 22 Apr 93 22:30:50 GMT Sender: daemon@net.bio.net Distribution: bionet Lines: 356 SOME AVAILABLE PHYLOGENY PROGRAMS The following material (except item 0) is from the PHYLIP version 3.5 documentation. I post it because it may be a useful compilation. Here are some of the phylogeny packages that I know about. Some of them are available over Internet from ftp server machines. If you are on Internet you should familiarize yourself with ftp and with them (see entries 6 and 7 below for more information). Table of Contents 0. PHYLIP 9. VOSTORG 16. COMPROB 1. PAUP 10. MEGA 17. MARKOV 2. BIOSYS-1 11. Evomony 18. PHYSYS 3. MacClade 12. COMPONENT 19. SINCAIDEN 4. Hennig86 13. Turbotree 20. MUST 5. ClaDOS 14. Molevol 21. GDE 6. TreeAlign 15. CLINCH 22. TreeTool 7. Clustal 0. PHYLIP is a free package of programs for inferring phylogenies, including programs to carry out parsimony, compatibility, distance matrix, invariants ("evolutionary parsimony") and likelihood methods on a variety of different kinds of data. It is available in the recently-released versions 3.5c and 3.5p as C or Pascal source code and documentation, and in four forms of executables: (i) for 386 and 486 systems under PCDOS, (ii) for 386 and 486 systems under Windows, (iii) for non-386 and non-486 PCDOS systems, and (iv) for Macintosh systems. The C source code will also compile easily on most workstations and mainframes that have a C compiler. PHYLIP has been distributed by me since 1980, with over 2000 registered installations. New features include programs to compute protein sequence distances, to interactively modify a phylogeny, and to compute likelihoods in coalescent models from samples of genealogies. Most programs in the C version no longer have arbitrary limits on the numbers of sites of or species. Many other new features have been added as well, such as new models for variation of evolutionary rates among sites in the DNA likelihood programs. PHYLIP is available by anonymous ftp from evolution.genetics.washington.edu (IP number 128.95.12.41) in directory pub/phylip. Users who cannot get it this way can also send enough formatted diskettes, which will be returned with the particular form of the package and its documentation written on them. Contact me (preferably by electronic mail) for details of the diskette distribution or further information about anonymous ftp distribution. The latest version of PHYLIP is version 3.51 which fixes some bugs present in 3.5. 1. David Swofford of the Laboratory of Molecular Systematics, National Museum of Natural History, Smithsonian Instition, Washington, D.C. has written PAUP (Phylogenetic Analysis Using Parsimony). It can be ordered from the Center for Biodiversity, Illinois Natural History Survey, 607 East Peabody Drive, Champaign, Illinois 61820, U.S.A. Since December, 1985, Swofford has been distributing a precompiled executable object-code versions of PAUP for the IBM PC and other MSDOS systems. As of this writing (February, 1993) he has released version 3 (PAUP/Mac) for the Macintosh, and later hopes to release version 3 for PCDOS systems and ultimately for mainframes. The cost was $50, which will increase to $100 soon. Orders received for the Mac version will be filled but the final printed documentation will arrive later, as it is not completed yet. PAUP 3.0 is probably the most sophisticated parsimony program. It allows multistate characters, user-defined weights on individual state transitions, Wagner, Camin-Sokal and Dollo parsimony methods, bootstrap confidence intervals, and finding all most parsimonious trees by branch-and-bound. It also has provision for computing Lake's linear phylogenetic invariants. PAUP is (a great) many times faster than the parsimony programs in PHYLIP. 2. Swofford also distributes an older package of programs, BIOSYS-1, including some phylogeny estimation programs, for use with gene frequency data, with particular attention to distance methods. BIOSYS-1 is distributed on an IBM PC-formatted floppy disk. Included are precompiled versions for the IBM PC and source code for uploading to IBM, VAX/VMS, Unix, Prime and CDC mainframes and minicomputers. The price is $25.00, from the same address as PAUP. BIOSYS-2 is under development, but it is too early to anticipate a completion date. 3. If you have a Macintosh computer and any interest in discrete-state parsimony methods (including DNA and protein parsimony), you should definitely get MacClade. It was written by Wayne Maddison and David Maddison of the University of Arizona. All distribution is by Sinauer Associates, Sunderland Massachusetts 01375, USA. Their phone number is: (413) 665 3722, FAX: (413) 665 7292. A disk with program, help file, and example data files, plus book (which has about 100 pages of intro to phylogenetic theory, and 250 pages of program instructions), is $75 U.S. ($40 for the book alone). Site licenses also available. An earlier and less capable Version 2 (which for example cannot read nucleic acid sequences and has fewer features for discrete characters) is also available by anonymous ftp from the EMBL, Indiana and Houston molecular biology software servers. Their addresses are given below under the descriptions of TreeAlign and ClustalV. MacClade 2.1 will be found among their Mac software, as a squeezed and then binhexed file. MacClade enables you to use the mouse-window interface to specify and rearrange phylogenies by hand, and watch the number of character steps and the distribution of states of a given character on the tree change as you do so. MacClade is positively addictive and will give you a much better feel for the tree and your data. It's the closest thing to a phylogeny video game that I have seen. It has been influential in spurring the inclusion of interaction and graphics into other phylogeny programs. (I have tried to supply this functionality in PHYLIP by incorporating the programs MOVE, DOLMOVE, and DNAMOVE, which act somewhat like MacClade). MacClade does not have a sophisticated search algorithm to find best trees: it largely relies on you to do it by hand (which is surprisingly effective), with only a local rearrangement algorithm available to improve on that tree. 4. J. S. Farris has produced Hennig86, a fast parsimony program including branch-and-bound search for most parsimonious trees and interactive tree rearrangement. Although complete benchmarks have not been published it is said to be faster than Swofford's PAUP; both are a great many times faster than the parsimony programs in PHYLIP. The program is distributed in executable object code only and costs $50, plus $5 mailing costs ($10 outside of of the U.S.). The user's name should be stated, as copies are personalized as a copy- protection measure. It is distributed by Arnold Kluge, Amphibians and Reptiles, Museum of Zoology, University of Michigan, Ann Arbor, Michigan 48109-1079, U.S.A. It runs on PC-compatible microcomputers with at least 512K of RAM and needs no math coprocessor or graphics monitor. It can handle up to 180 taxa and 999 characters. An 80386 version, Hennig386, is currently being tested but no release date has yet been announced. 5. ClaDOS, an interactive program which allows rearrangement of trees and their evaluation, mapping of characters into them, and more, is available for PCDOS systems from Kevin Nixon, L. H. Bailey Hortorium, Cornell University, 467 Mann Library, Ithaca, New York 14853. I have been unable to get information on its cost or method of distribution. 6. Jotun Hein, (Institute of Genetics and Ecology, University of Aarhus, 8000 Aarhus C, Denmark) has produced TreeAlign, a multiple sequence alignment program that builds trees as it aligns DNA or protein sequences. It uses a combination of distance matrix and approximate parsimony methods. TreeAlign uses too much memory for it to run on PC's (DOS or Mac systems) but is really designed for a workstation or mainframe. It is available by anonymous ftp at the Indiana, Houston, and EMBL molecular biology software distribution sites. Their network addresses are respectively: ftp.bio.indiana.edu, ftp.bchs.uh.edu, and ftp.embl-heidelberg.de. In the Indiana archive one must enter dir From owner-population-bio@net.bio.net Thu Apr 22 23:00:00 1993 Path: biosci!bcm!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!howland.reston.ans.net!darwin.sura.net!welchgate.welch.jhu.edu!danj From: danj@welchgate.welch.jhu.edu (Dan Jacobson) Newsgroups: bionet.general,bionet.population-bio,bionet.molbio.gene-linkage Subject: Bibliography of Theoretical Population Genetics by gopher Message-ID: <1993Apr23.164056.2248@welchgate.welch.jhu.edu> Date: 23 Apr 93 16:40:56 GMT Organization: Johns Hopkins Univ. Welch Medical Library Lines: 49 Xref: biosci bionet.general:4671 bionet.population-bio:420 bionet.molbio.gene-linkage:182 The Bibliography of Theoretical Population Genetics by Joseph Felsenstein is now available by gopher. Just point your gopher client at merlot.welch.jhu.edu and select the following: --> 12. Search Databases at Welchlab (Vectors, Promoters, NRL-3D, EST, OMI../ --> 13. Search the Bibliography of Theoretical Population Genetics You may search this database using booleans (and, or, not), phrase searches (" ") and wildcards (*). A typical entry s as follows: ---------- Franklin, I. and M. W. Feldman Two loci with two alleles: linkage equilibrium and linkage disequilibrium can be simultaneously stable Theoretical Population Biology 12: 95-113 1977 ---------- All contents of this bibliography (c) Copyright 1988 by Joseph Felsenstein. This bibliography covers the years 1867-1981. You can reach the author at the following addresses: Electronic mail addresses: Joe Felsenstein Internet: joe@genetics.washington.edu Department of Genetics SK-50 Bitnet: felsenst@uwavm University of Washington phone: (206)-543-0150 Seattle, WA 98195 fax: (206)-543-0754 If you've never heard of gopher don't worry it's free and on the net, just write me a note if you'd like information on how to get started. Happy Searching, Dan Jacobson danj@welchgate.welch.jhu.edu Johns Hopkins University From owner-population-bio@net.bio.net Tue Apr 27 23:00:00 1993 Path: biosci!enterpoop.mit.edu!gatech!howland.reston.ans.net!zaphod.mps.ohio-state.edu!caen!kuhub.cc.ukans.edu!jimdb From: jimdb@kuhub.cc.ukans.edu Newsgroups: bionet.biology.tropical,bionet.population-bio,bionet.general,bionet.jobs,bionet.sci-resources,sci.bio,sci.environment,sci.research,talk.environment Subject: Field Assistants Needed For Summer Pronghorn Antelope Study Message-ID: <1993Apr28.000150.49566@kuhub.cc.ukans.edu> Date: 28 Apr 93 06:01:50 GMT Organization: University of Kansas Academic Computing Services Lines: 33 Xref: biosci bionet.biology.tropical:202 bionet.population-bio:421 bionet.general:4711 bionet.jobs:1745 bionet.sci-resources:723 sci.bio:3085 sci.environment:5896 sci.research:735 talk.environment:3551 >>I am posting this for a friend, please reply to him directly<< Field assistants are needed in the summer (June-August) and the fall (September-November) to help in a long-term study of the behavior and ecology of pronghorn antelope in Colorado. Any students interested in behavior and evolution are welcome to apply. Primary duties include behavioral observations and videotaping of focal bucks, and vegetational sampling of territories. Basic observational equipment (binoculars, spotting scope) and patience are required. Housing will be provided and additinal funds are pending. To apply, please send a letter describing your qualifications and interests, and the names, addresses and phone numbers of two references to one of the following addreses: Before 15 May 1993: Sherwick Min Department of Systematics and Ecology University of Kansas Lawrence, KS 66045-2106 email: MIN@UKANVM After 15 May 1993: P.O. Box 144 Kremmling, CO 80459 Thanks for your interest. -- ---------------------------------------------------------------------- Jim Danoff-Burg (Snow Museum, Univ. of Kansas, Lawrence, KS 66045) Bitnet: JIMDB@UKANVAX Internet:jimdb@kuhub.cc.ukans.edu "Myrmecophiles-R-Us" From owner-population-bio@net.bio.net Thu Apr 29 23:00:00 1993 Path: biosci!daresbury!buzz.bmc.uu.se!corax.udac.uu.se!sunic!pipex!uknet!mcsun!Germany.EU.net!gmd.de!newsserver.jvnc.net!news.cac.psu.edu!howland.reston.ans.net!gatech!usenet.ufl.edu!gnv.ifas.ufl.edu!jma From: jma@gnv.ifas.ufl.edu (JULIO M. ARIAS (813)956-1151 X 302) Newsgroups: bionet.population-bio Subject: Ecology and Environ. conf. - Call for papers Message-ID: <1993Apr29.155157.2374@gnv.ifas.ufl.edu> Date: 29 Apr 93 20:51:57 GMT Lines: 140 Sent to: ECOLOG-L@UMDD CONSLINK@SIVM OTS-L@YALEVM ECOSYS-L@DEARN ENTOMOL@UGUELPH biodiv-l@bdt.ftpt.br Dear netters: Please spread this out, apologies to those who sign in more than one of this mailing lists. Julio M. Arias University of Florida Department of Entomology ---------------------------- I have received a request from Costa Rica to publicize the enclosed call for contributions, and I would be very grateful if you could help in this regard. With best regards, Ignacio Trejos Programming Research Group, Oxford University --- INTERNATIONAL CONFERENCE ON ECOLOGY AND ENVIRONMENT Drake Bay, PenInsula de Osa, Costa Rica June 20-24th, 1994 (Indian Summer) CALL FOR PAPERS 1. La FundaciOn para la ProtecciOn del Bosque Primario (FUNBOSPRI) (Foundation for Primary Forest Protection) Id. 3-006-115104-17 is calling for papers to specialists, organizations and people interested in ecology and environment and related fields. The goal of the conference is to share experiences, to get perspectives and to discuss problems related with ecology and environment and to join individuals and institutions interested in this topic. It is also to give the opportunity to enjoy some of the most beautiful places of our country and discuss about the ecological problems of the area in order to propose a solution. In this respect, I would like to submit for your consideration, by the first week of may, a list of problems we are facing and the context in which they arose. We hope we will get a better perspective to face our problems with your contributions. 2. Location of the conference. For us it was difficult to decide where this conference would take place. The final decision was "Peninsula de Osa". This decision was supported by arguments like this: Although there are cheaper - and even more confortable- places in our country, it is better to pay a little extra cost and give the opportunity to enjoy the natural riches of Peninsula de Osa, its biological varieties - unique of the region-, and its refreshing sights. Peninsula de Osa is located 350 kms south of the international airport. It is one of the most beautiful places of Costa Rica and one of the most appreciated regions internationally. There are two ways of transportation: by air and by a combination of land and river. We suggest to travel by land. The travel can be divided into two parts: the first from San Jose to Sierpe and the other from Sierpe to Drake Bay. The people who have visited this region were stroken by these sights. This second part of the travel is particularly exciting: navegating by Rio Sierpe appreciating beautiful places, multicolor sand, clear water, marshes at both sides of the river and other attractions. This event will give you the opportunity of knowing these places and seeing one of the locations that deserve conservation and care. The conference will take place during five days. Two trips are planned during the conference: the first to Isla de CaNo, one of the most exciting places, and the second to the Corcovado's National Park, characterized by the primary forest and exotic biological varieties. The conference schedule is planned so that it allows people to travel during the week. 3. Main topics: The main topics considered at the conference are the following: Ecological Experiences Models for Development and Planning Pacific uses of Nuclear Energy and Environment Quality Control and Environment Conservation and Management Community and Ecology Ecology and Education Native Cultures and Ecology Related topics can be considered. 4. Deadlines: Abstracts: December 15th, 1993. Summaries no longer than 200 words. Acceptance notification: february 1994. Papers: April 15th, 1994 Conference's schedule availabe by: early May 1994. 5. Expenses: $1,200. Including accomodations, meals, and trips during the event; a copy of the proceedings and transportation from the airport to peninsula and back. If you want to enjoy the beauties of the peninsula after or before the event, extra costs must be covered. The available kind of food includes: 100 % natural vegetables and fruits, meats and fish. For washing, cleaning and shower we use only biodegradable products. 6. Information: We have pictures and more detailed information about the region. If you need any further information related with the event or mailing documents, please write: Celso Vargas Departamento de ComputaciOn ITCR, Aptdo 159, Cartago, Costa Rica FAX (506) 51 53 48 email: vargase@bitnet.ucrvm2 or vargase@earn.ucrvm2 or Apartado 7137-1000 San JosE, Costa Rica. JosE Castro Apartado 7137-1000 San JosE, Costa Rica. 7. Executive committee Celso Vargas Elizabeth ArnAez JosE Antonio Vargas JosE Castro