BEN # 144

Adolf Ceska aceska at CUE.BC.CA
Tue Sep 17 09:45:56 EST 1996


                                                   
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No. 144                              September 17, 1996

aceska at freenet.victoria.bc.ca        Victoria, B.C.
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 Dr. A. Ceska, P.O.Box 8546, Victoria, B.C. Canada V8W 3S2
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NPSBC - NATIVE PLANT SOCIETY OF BRITISH COLUMBIA

This new society was instigated to bring together a diversity of
people  who  enjoy,  study  and work with indigenous plants. The
mission of the NPSBC Native Plant Society  of  British  Columbia
is:

   to  encourage  knowledge, responsible use and conservation
   of British Columbia's native plants and habitats.

This will be achieved through the following objectives:

 1. Advance knowledge and  awareness  of  the  value  of  native
    plants.
 2. Develop  and  maintain  an inventory of BC's native species,
    communities and habitats.
 3. Promote the  conservation  of  BC's  native  plant  species,
    communities and habitats.
 4. Initiate  the development of guidelines concerning the ethi-
    cal uses of native plants.
 5. Support the use of native  plants  in  accordance  with  the
    ethical use guidelines.
 6. Encourage  the  restoration  of disturbed habitats of native
    plant species and communities.
 7. Facilitate communications and interaction among individuals,
    groups and governments regarding native plant issues.
 8. Support research on native plants and plant communities.

Membership fees: Individual - $20.00, Associate -  $15.00,  Cor-
porate - $75.00.

First  membership meeting of the NPSBC - Native Plant Society of
British Columbia: Saturday, November 23, 1996, from 9:30 a.m. to
5:00 p.m., at the Grand Hall, University College of the Cariboo,
Kamloops. Registration fee for the conference  (includes  buffet
lunch and 2 coffee breaks) is $25.00 (deadline: November 8).

For more information contact:

Diane Gertzen, 14275 96th Avenue, Surrey, BC, V3V 7Z2
Phone: 604-930-3309 E-mail: DLGERTZE at mfor01.for.gov.bc.ca


WHAT ARE THE ANTIQUE FORESTS ? (RE: BOTANY BC FIELD TRIP)
From: Trevor Goward, Nature Canada - Summer 1994.

As  a  rule,  lichen colonization in a maturing forest occurs in
two pulses. The first consists of various species of  widespread
distribution, and is essentially complete by the time the forest
reached the century mark. The second, more diffuse pulse doesn't
really  begin  to  register  until  50 to 100 years later. It is
comprised of species living at or near the ecological limits  of
their  range;  many  will  remain  rare even once they do become
established.

These phenomena are by no means peculiar to the conifer  forests
of  western  North  America.  Similar patterns have already been
amply  documented  in  Britain  by  lichenologist  Francis  Rose
(1976).

In  mid-'70s,  Rose  conducted inventories of the lichens of 102
oak and beech woodlands in different parts of the British Isles.
When later he compared his species lists against  existing  land
use  records,  he  found a definite positive correlation between
lichen diversity and forest age. This led him to  conclude  that
some  lichens  may be regarded as "historical indicators of lack
of environmental change, within certain  critical  limits,  over
long periods of time."

British forests undisturbed for many hundreds of years typically
support between 120 and 150 lichen species per square kilometre.
The  richest  forest  for lichens by far is the New Forest which
ironically, is  anything  but  new,  having  apparently  escaped
woodcutter's axe since at least the Middle Ages. It was found to
contain  an  astonishing  259  species  of lichens. By contrast,
British woodlans dating from less than 200  years  ago  tend  to
support fewer than 50 lichens per square kilometre.

In  the  British  Isles,  as in British Columbia, a 150-year-old
forest will not acquire its full complement of epiphytic lichens
for at least another century or two.  The  fact  obliges  us  to
think again about what we mean when we speak of "old growth."

Should  an old-growth woodland 1000 years old be lumped, for the
purposes of conservation, with one that is "only" 200 years old?
Both forests may appear identical to the untrained eye. But they
clearly are not  identical  -  whether  as  living  archives  of
British Columbia's past, or as repositories of biological tradi-
tion.

"Antique  forests,"  as  I define them, are simply the oldest of
the old: forests that have been around long  enough  to  accumu-
late,  among  other  things,  a  rich  assemblage  of old-growth
epiphytes. Such forests seem invariably to be more than  300  to
350  years  old, and many, in many cases, have been in existence
much longer than the most ancient trees within  them.  The  last
point is important. A 150-year-old tree in a 500-year-old forest
may  well support more old-growth indicators than a 250-year-old
tree in a forest dating from a fire of equivalent vintage.

Goward, T. 1994. Living antiquities. Nature Canada, Summer 1994:
   14-21.
Goward, T. 1994. Notes on oldgrowth-dependent  epiphytic  macro-
   lichens  in  inland  British  Columbia, Canada. Acta Botanica
   Fennica 150: 31-38.
Rose, F. 1976. Lichenological indicators of age and  environmen-
   tal  continuity  in woodlands. Pp. 279-307 in: Brown, D.H. et
   al.  [eds.]  Lichenology:  progress  and  problems.  Academic
   Press, London.


SOUTHEAST ALASKA'S ROCKY SHORES: SEAWEEDS & LICHENS

Rita  M.  O'Clair,  R. M., S. C. Lindstrom, & I. R. Brodo. 1996.
   Southeast Alaska's  rocky  shores:  seaweeds  &  lichens. 
   Plant Press, Auke Bay, Alaska. 152 p.

This  guide to the abundant and diverse organisms living between
tidelines on the rocky shores of Southeast Alaska is useful from
the Aleutian Islands, Alaska, to  Oregon  because  the  complete
ranges of all species are given.

The  book provides detailed descriptions of 83 species of algae,
30 species of lichens, 1 moss and 2  seagrasses.  A  chapter  is
devoted to favorite seaweed recipes.

Each  species description includes the common names, current and
former scientific names, geographic distribution and bathymetry,
as well as comprehensive anatomical, physiological and  ecologi-
cal  information.  Almost  every  species  is  illustrated by an
exquisite grayscale b&w drawing. A complete species list, bibli-
ography and index are included, while a glossary  is  integrated
with the text.

Together,  these three biologists, whose careers span a total of
80 years, have written a treasure for all who  love  west  coast
rocky shorelines, including:

        --students and teachers of marine biology
        --subsistence users of intertidal resources
        --managers of aquaculture projects
        --scientists concerned with shoreline protection
        --tour guides and visitors
        --beachcombers, boaters, SCUBA divers
        --birdwatchers, naturalists, and
        --anyone who walks on rocky beaches!

To order a copy of this book, please send $22.95 in US funds for
orders with the US (residents of the City and Borough of Juneau,
Alaska,  add $.80 sales tax), or $25 in US funds for orders from
Canada or Mexico. For other foreign orders, please enquire. Send
funds together with your complete name  and  address  (including
zip code or postal code) directly to the publisher:

   Plant Press,
   PO Box 210094,
   Auke Bay, AK 99821-0094

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