Subject: ECOLOG-L Digest - 3 Jun 2003 to 4 Jun 2003 (#2003-143)
There are 7 messages totalling 346 lines in this issue.
Topics of the day:
1. diversi program package
2. Short-term exposure to estrogen cuts fish fertility
3. Pacific Salmon Recovery Science Review Panel Membership Solicitation
Notice
4. Job ad: Climate Science & Impacts Staff Scientist
5. Job: Researcher/Writer for White Paper on Plant-Based Education in K-12
6. Herman Daly, conservationist's hero
7. marking grass shrimp
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Date: Wed, 4 Jun 2003 08:44:09 +0200
From: =?utf-8?B?SXpzw6FrIErDoW5vcw==?= <ijanos@DEIMOS.BDTF.HU>
Subject: diversi program package
Dear Ecologists,
Upon your possible request I send to you the program package DIVERSI2.1, whi
h is a free available software, developed by me. This new version of DIVERSI
is adapted now to run on IBM-PC compatible machines with DOS operating syste
or with a business system which includes DOS client, such as WINDOWS, etc.
By means of the menus one can calculate diversity index values with conf
dence intervals, significance of diversity differences, sensitivity properti
s of diversity indices, a parametric similarity index and fit some abundance
distributions. A User's guide helps the usage of the program package and dem
nstrates the validity of the calculations.
Janos Izsak
Hungary
------------------------------
Date: Wed, 4 Jun 2003 10:22:23 -0400
From: Karen Claxon <kclaxon@EARTHLINK.NET>
Subject: Short-term exposure to estrogen cuts fish fertility
http://www.pnl.gov/news/2003/03-20.htm
Short-term exposure to estrogen cuts fish fertility
RICHLAND, Wash. - While several studies have focused on how estrogen
from contraceptives may alter sex organs of juvenile fish, few studies
have analyzed how exposure to estrogen affects adult fish as they make
their way through rivers, lakes and streams to spawn. Now, a study by
scientists at the Department of Energy's Pacific Northwest National
Laboratory suggests that when adult male fish are exposed to short-term
and low concentrations of a synthetic estrogen, their fertility can drop
by as much as 50 percent.
The study, conducted with the University of Idaho, appears in the June
issue of Environmental Toxicology and Chemistry.
Previous research reported that high concentrations of estrogen could
change sex organs, causing juvenile male fish to develop female organs.
Estrogen is an active ingredient in most oral contraceptives and often
finds it way into surface waters through sewer systems. The PNNL study
looked at the impact of a synthetic estrogen called ethynylestradiol,
which is the chemical in oral contraceptives.
Irvin Schultz, PNNL toxicologist who led the study, said the research
reinforces that impacts aren't limited to juvenile fish.
"We can see that adult fish aren't immune to the effects of estrogen in
waterways. Even short-term exposure to low levels of synthetic estrogen
can impact their fertility," Schultz noted. "Our results indicate that
the fertility of a healthy male trout that has developed normally still
can be affected, if that exposure takes place during a critical sexual
maturation stage before spawning."
In a controlled laboratory experiment, PNNL scientists from the lab's
Marine Sciences Laboratory in Sequim, Wash., exposed adult male rainbow
trout for 62 days to three different concentrations of
ethynylestradiol - 10, 100 and 1,000 nanograms per liter of water. The
sperm of exposed fish were harvested then used in a controlled in-vitro
fertilization process with eggs from a healthy female rainbow trout.
After 28 days, a measurable decrease in fertilization was observed in
the treated trout compared with a control group.
In some experiments, a 50 percent decrease in sperm fertilization
capacity was noted in semen collected from the trout exposed to 10
nanograms of ethynylestradiol per liter. For example, in an experiment
using 50,000 sperm for one egg, the exposed fish had 22 percent
fertilization compared with 45 percent fertilization of control fish.
That impact is important, say researchers, because 10 nanograms per
liter is a level found in some surface water samples.
Schultz and his colleagues, including co-author Jim Nagler of the
University of Idaho, studied the possible mechanisms for reduced
fertility, specifically sperm motility and decreased hormone levels.
While they were able to rule out sperm motility as the mechanism, their
research revealed increased - not decreased - hormone levels in the
blood plasma of fish exposed to 10 nanograms per liter of
ethynylestradiol. But hormone levels did decrease in fish exposed to the
larger concentration of 100 nanograms of ethynylestradiol.
"While other research has shown the visible change that can take place
when young male fish are exposed to high levels of estrogen, we're
suggesting that low and short-term exposure can have just as
significant - but not physically observable - effects," Schultz said.
Business inquiries on this or other areas of research at PNNL should be
directed to 888-375-PNNL or inquiry@pnl.gov.
Pacific Northwest National Laboratory is a DOE Office of Science
research facility and delivers breakthrough science and technology in
the areas of environment, energy, health, fundamental sciences and
national security. Battelle, based in Columbus, Ohio, has operated the
laboratory for DOE since 1965.
------------------------------------------------------------------------
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------------------------------
Date: Wed, 4 Jun 2003 08:17:43 -0700
From: JJ Westfall <JJ.Westfall@NOAA.GOV>
Subject: Pacific Salmon Recovery Science Review Panel Membership Solicitatio
Notice
NOAA Fisheries is seeking nominations to the Recovery Science Review
Panel, a distinguished, independent panel that advises the technical and
scientific aspects of developing recovery plans for Pacific salmon and
steelhead listed under the U.S. Endangered Species Act (ESA). The Panel
plays an important role in ensuring the scientific credibility of
recovery planning by encouraging consistent application of ecological
and evolutionary principles in recovery science, and by providing
general advice to research relevant to recovery planning.
Members serve initial terms of 3 years, with a time commitment of
approximately 3-4 days every 3-4 months, and are compensated for their
time and expenses. Nominees should (1) be scientists of international
reputation in the fields of ecology, evolutionary biology, conservation
biology, fisheries biology, or salmon biology; (2) have held positions
of scientific leadership; (3) have demonstrated fairness and
cooperation, and an ability to work effectively in a team; and (4) meet
National Research Council standards regarding independence and conflict
of interest. We encourage nominations (including self-nominations) by
all interested parties, regardless of affiliation. Each nomination must
include the nominator's name and affiliation, a detailed curriculum
vitae of the nominee, and supporting letter(s) describing how the
nominee meets the qualifications outlined above.
Nominations must be received on or before 15 July 2003, and should be
sent to:
J.J. Westfall,
NOAA Fisheries, Northwest Fisheries Science Center
2725 Montlake Boulevard E.,
Seattle, WA 98112
(JJ.Westfall@noaa.gov)
Electronic submissions are encouraged. More detailed information on
recovery planning and the Recovery Science Review Panel is available at
http://www.nwfsc.noaa.gov/cbd/trt/.
--
J.J. Westfall
Administrative Assistant
MES, Inc.
NOAA Fisheries / NWFSC
2725 Montlake Blvd. E.
Seattle, WA 98112
------------------------------
Date: Wed, 4 Jun 2003 15:33:40 -0400
From: Julia Petipas <jpetipas@UCSUSA.ORG>
Subject: Job ad: Climate Science & Impacts Staff Scientist
Climate Science and Impacts Staff Scientist Position
The Union of Concerned Scientists seeks an individual to serve as climate ch
nge staff scientist and member of the Sound Science Initiative project team.
Under the direction of the Deputy Director of the Global Environment Progra
, s/he will:
Provide substantive guidance of UCS work to assess and publicize the ecologi
al and societal impacts of climate change in specific regions of the United
tates. Design and guide collaborative analyses of the projected impacts of c
imate change on key sectors (agriculture, water resources tourism, coasts, e
c). Lead production of report(s) and participate in the design and implement
tion of outreach and media strategies. Help craft project grant proposals an
reports and manage relevant budgets. Initial focus will be on California wi
h likely expansion to climate impacts activities in other regions of the US.
Identify, develop and implement activities to strengthen public and policyma
er understanding of climate change, the effectiveness of key climate science
institutions and the sound representation of climate change science and impa
ts in the media including activities to support the work of the Intergovernm
ntal Panel on Climate Change. Maintain strong working relationships with pro
inent scientists in climate related fields, and engage members of the scient
fic community in UCS activities. Provide technical review of scientific and
olicy aspects of UCS climate change materials. Tailor the style and content
f materials for technical and/or general audiences, as appropriate. Serve as
media spokesperson on climate science and impacts issues.
Maintain knowledge of developments and trends on key aspects of climate and
lobal change science and help to determine appropriate UCS activities.
Position requires in-depth knowledge of global change science, including the
ecological and/or societal impacts of climate change, generally acquired thr
ugh completion of a Ph.D in a relevant field, demonstrable skills in project
management, an ability to understand the public policy aspects of climate ch
nge, strong public speaking skills, demonstrable ability to write for genera
audiences, and the ability to work both independently and as a member of a
ultidisciplinary team. Successful candidates will have at least two years of
related professional experience, including experience in communicating scien
e to non-specialists and in developing and guiding collaborative projects. S
pervisory experience is highly desirable. The position will be based in our
ambridge headquarters. Some travel will be required.
To apply, send cover letter, vita, writing sample, and names of three refere
ces to:
Deputy Director, Global Environment
Union of Concerned Scientists
Two Brattle Square
Cambridge MA 02238
Email: ncole@ucsusa.org
No phone calls, please.
UCS is an equal opportunity employer that continually seeks to diversify its
staff and provides competitive salary, excellent benefits, and a rewarding w
rking environment. More information is available at http://www.ucsusa.org.
------------------------------
Date: Wed, 4 Jun 2003 17:21:59 -0600
From: David Inouye <inouye@umd.edu>
Subject: Job: Researcher/Writer for White Paper on Plant-Based Education in
-12
Researcher/Writer for White Paper
on
Plant-Based Education in K-12 Classrooms
Contract Assignment --
A national consortium of botanical and horticultural education
organizations is seeking to contract an individual to research, organize
and write a white paper on the importance of plant-based education in K-12
classrooms. The white paper findings and recommendations will be reviewed,
discussed and refined in the first quarter of 2004 by a group of education
stakeholders. The final version of the document will inform planning for a
national educational initiative that advances and supports plant-based
education across the curricula in K-12 classrooms.
Candidates are required to demonstrate extensive understanding of education
theory and children''s cognitive development, plant-based education
practice, and experience and facility with research and writing on deadline
for professional clients. The project is estimated to require no more than
five months or 400 hours at a rate to be negotiated.
Applications for the position are due by June 30, 2003.
Go to
http://www.garden.org/job-posting.html for a complete job description and
application requirements.
------------------------------
Date: Wed, 4 Jun 2003 21:38:05 -0400
From: Brian M Czech <brianczech@JUNO.COM>
Subject: Herman Daly, conservationist's hero
Stan has done us a service here. Herman Daly is probably the best
explicator of sustainability alive. An ex-World Bank economist, Daly is
also a hero for his courageous critique of the Bank. With great elegance
he exposed the Bank^Òs development policies as rooted in the fallacies of
perpetual economic growth.
Furthermore, Daly provided us with an alternative to neoclassical
economics; namely, ecological economics. He focused on the key issue,
economic growth, and provided an alternative, the steady state economy.
In doing so he resurrected the classical wisdom of John Stuart Mill^Òs
stationary state, in which cultural development never ceases but in which
the size of the economy (population times consumption) remains stable,
thus leaving habitats in place for wildlife.
In my opinion, Herman Daly is in the same league as Aldo Leopold and
Rachel Carson as one of the most effective conservationists in modern
history. Perhaps he is not the most dynamic speaker, but neither were
Leopold or Carson. Surely no one^Òs message has had the potency of
conservation policy implications.
Watch the clip, and see the history and future of conservation in the
making!
Brian Czech
Www.steadystate.org
On Wed, 4 Jun 2003 19:46:59 +0000 stan moore <hawkman11@HOTMAIL.COM>
writes:
> read a synopsis and even hear the speech at the following webpage:
>
> http://www.worldbank.org/wbi/B-SPAN/sub_essd_hdaly.htm
>
>
>
> submitted by Stan Moore San Geronimo, CA
> hawkman11@hotmail.com
>
> _________________________________________________________________
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>
Brian Czech
Arlington, VA
USA
------------------------------
Date: Wed, 4 Jun 2003 22:01:02 -0400
From: Teresa Manyin <manyin@CBL.UMCES.EDU>
Subject: marking grass shrimp
I am looking for a cheap and easy way to mark/tag grass shrimp
(Palaemonetes pugio), for a period of one or two months in a laboratory
setting. I've seen a mark and recapture study in the literature, but the
authors did not explain how the shrimp were marked. Paint doesn't last
very long, due to frequent molting of the exoskeleton. Does anyone have
any suggestions?
Thanks,
Teresa Manyin
Graduate Student, MEES Program
Chesapeake Biological Laboratory
University of Maryland Center for Environmental Science
------------------------------
End of ECOLOG-L Digest - 3 Jun 2003 to 4 Jun 2003 (#2003-143)
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Thanks to discussion with TVR, I have decided to put a link to back files of the discussion group. This months back files.
The link to complete archives is available elsewhere.
This text was originally an e-mail. It was converted using a program
RUPANTAR- a simple e-mail-to-html converter.
(c)Kolatkar Milind. kmilind@ces.iisc.ernet.in