Subject: ECOLOG-L Digest - 18 Mar 2002 to 19 Mar 2002 (#2002-70)
There are 18 messages totalling 1262 lines in this issue.
Topics of the day:
1. journal of ecology
2. Summer Research Assistant Needed, Duke University
3. Upcoming Workshop: Amphibians of the San Francisco Bay Area - May 4-5,
2002
4. Weather deals serious blow to monarchs (3)
5. Biologists target invasive species in Alaska
6. Job: Research Assistant, IES, NY
7. Looking for bison pictures (3)
8. summary of responses on nonparametric stats question
9. Environmental Job Openings from EnviroNetwork
10. Center Director Position Open at the Turks and Caicos Islands!
11. Position Announcement: Rangeland Ecologist
12. job announcement
13. field assistants needed
14. UW-Madison Position Announcement
----------------------------------------------------------------------
Date: Tue, 19 Mar 2002 13:36:06 -0000
From: Lindsay Haddon <lindsay@BRITISHECOLOGICALSOCIETY.ORG>
Subject: journal of ecology
Contents of forthcoming issues of Journal of Ecology
Please note new addresses for the BES website
(www.BritishEcologicalSociety.org) and the editorial office
(Lindsay@BritishEcologicalSociety.org).
------------------------------------------------------------------------
-----
Journal of Ecology : Volume 90 issue 2
(April 2002)
CONTENTS
STANDARD PAPERS
Inferring landscape dynamics of bog pools from scaling relationships and
spatial patterns
L.R. Belyea & J. Lancaster
Hiding from swans: optimal burial depth of sago pondweed tubers foraged by
Bewick's swans
L. Santamaria & M.A. Rodriguez-Girones
Primary and secondary stem growth in arctic shrubs: implications for
community response to environmental change
M.S. Bret-Harte, G.R. Shaver & F.S. Chapin
On the higher availability of N and P in lime-poor and lime-rich coastal
dunes in the Netherlands
A.M. Kooijman & M. Besse
Influence of maritime climate on coastal spruce stands in Maine inferred
from forest-hollow stratigraphies
M. Schauffer & G.L. Jacobson
Habitat requirements for establishment of Sphagnum from spores
S. Sundberg & H. Rydin
Temporal changes in spatial patterns of soil moisture following
disturbance: an experimental approach
D. Guo, P. Mou, R.H. Jones & R. Mitchell
Leaf herbivory and neighbourhood competition in a neotropical herb: effects
on demographic fates
C. Horvitz & D. Schemske
Effects of disturbance and competitive release on germination and seedling
establishment in a coastal prairie grassland
H. Jutila & J.B. Grace
Grazing history vs current grazing: in situ leaf demography of three alpine
plants
E.J.B. McIntire & D.S. Hik
The effects of grazers on the spatial and genetic population structure of
Veratrum album, an unpalatable, long-lived, clonal species
D. Kleijn & T. Steinger
The effects of fertilisation on the herbaceous vegetation of the boreal
forest in northwestern Canada: a ten year study
R. Turkington, E. John, S. Watson & P. Seccombe-Hett
Why does fertilisation reduce plant species diversity: testing three
competition-based hypotheses
T.K. Rajaniemi
Community assembly from the local species pool: an experimental study using
congeneric species pairs
R. Tofts & J. Silvertown
Selectivity and functional diversity in arbuscular mycorrhizas of
cooccuring fungi and plants from a temperate deciduous woodland
T. Helgason, J. Merryweather, J. Denison, P. Wilson, J.P.W. Young & A.H.
Fitter
------------------------------------------------------------------------
-------------------------
Forthcoming papers (provisional contents - June)
Issue 90/3:
ESSAY REVIEW
Large scale spatial dynamics of plants: metapopulations, regional
assemblies and patchy populations
R.P. Freckleton & A.R. Watkinson
STANDARD PAPERS
Geographical variation in diaspore traits of an ant-dispersed plant
(Helleborus foetidus): are ant community composition and diaspore traits
correlated?
J.L. Garrido, P.J. Rey, X. Cerda & C.M. Herrera
How do nutrients and warming impact on dwarf shrubs and their insect
herbivores? a nine-year study of a sub-arctic heath community
S.J. Richardson, M. Press & S.E. Hartley
Rooting depth, lateral root spread and below-ground/above-ground
allometries of plants in water limited ecosystems
H.J. Schenk & R.B. Jackson
Responses of Pancratium sickenbergeri to simulated bulb herbivory:
combining defense and tolerance strategies
N. Ruiz-R, D. Ward & D. Saltz
The Holocene paleaeoecology and developmental pathways of Crymlyn Bog, West
Glamorgan, UK
P.D.M. Hughes & L. Dumayne-Peaty
Contrasted effects of increased N and CO2 levels on two keystone species in
peatland restoration and implications for global change
E.A.D. Mitchell, A. Buttler, P. Grosvernier, H. Rydin, A. Siegenthaler &
J.M. Gobat
Long term investigations in a strict forest reserve in the Eastern Italian
alps: spatiotemporal origin and development in two multilayered sub-alpine
stands
R. Motta, P. Nola & P. Piussi
Life span of Beta vulgaris ssp. maritima: geographical variation and the
impact of gene flow, age at first reproduction and disturbance
N.C. Hautekeete, Y. Piquot & H. van Dijk
Ants affect the distribution and performance of Clusia criuva seedlings, a
primarily bird-dispersed rainforest tree
L. Passos & P.S. Oliviera
The effect of intitial seed density on the structure of a desert annual
plant community
C.J. Lortie & R. Turkington
Growth and mortality for seven co-occuring tree species in the southern
Appalachian Mountains: implications for future forest composition
P.H. Wyckoff & J.S. Clark
Convergence towards higher leaf mass area has different consequences in dry
and nutrient poor habitats.
I. Wright, M. Westoby & P.B. Reich
Spatially realistic plant metapopulation models and the
competition-colonisation
trade-off
S.I. Higgins & M. Cain
FORUM
Primary community assembly on land: why are the predators and scavengers
there first? Are we missing a vital stage?
I.D. Hodkinson, N. Webb & S.J. Coulson
Studying plant competition - from root biomass to general aims
M. Zobel & K. Zobel
-------------------------------------------
Executive Editor:
Anthony J. Davy (a.j.davy@uea.ac.uk)
Managing Editor:
Lindsay Haddon (lindsay@britishecologicalsociety.org)
Editorial Office:
Journal of Ecology
British Ecological Society
26 Blades Court
Deodar Road
London SW15 2NU
UK
Websites
Information on the journal is available from its homepages on the British
Ecological Society
(www.britishecologicalsociety.org/publications/journals/ecology) and
Blackwell Science (www.blackwell-science.com/jec).
The BES site describes the journal's editorial policy and procedures but,
before submitting a paper, authors should consult the most recent version
of the Instructions to Authors on the Blackwell Science site.
The BES site should be consulted for the index to Biological Flora accounts
and the probable contents of forthcoming issues. It also lists
supplementary material associated with published articles (formerly the
Journal of Ecology Archive), as well as a selection of recent sample
papers: items from both lists can be downloaded free of charge via a link
from the relevant Table of Contents on the Blackwell Science site. Archive
entries from 2002 can also be accessed using the URL given in the printed
version.
See also www.blackwell-synergy.com (for electronic versions, volume
86-present) and www.jstor.org (for the JSTOR journal archive, covering
volumes 1-86).
Please reply to Lindsay@BritishEcologicalSociety.org, unless you intend to
attach graphics, .pdf or other large (>1MB) files (please use
JEcol@BritishEcologicalSociety.org for these).
---------------------------------------------
Lindsay Haddon
Managing Editor, Journal of Ecology
British Ecological Society,
26, Blades Court, Deodar Road
Putney, London SW15 2NU, UK.
e-mail:Lindsay@BritishEcologicalSociety.org
phone: 0208-871-9797
fax: 0208-871-9779
***I check e-mail most days although I'm only in the Putney office on
Tuesdays and Thursdays***
The British Ecological Society is a limited company, registered in England
No. 1522897 and a Registered Charity No. 281213. VAT registration No
199992863. Information and advice given to members or others by or on
behalf of the Society is given on the basis that no liability attaches to
the Society, its Council Members, Officers or representatives in respect
thereof.
------------------------------
Date: Tue, 19 Mar 2002 08:52:39 -0500
From: ebernhar@DUKE.EDU
Subject: Summer Research Assistant Needed, Duke University
POSITION: Research technician
DATES: May to August 2002 (start and end dates flexible)
LOCATION: Duke University (lab of Bill Schlesinger)
DESCRIPTION: A full-time summer technician is needed to assist in a
study of the effects of elevated CO2 on root and rooting
zone chemistry in conjunction with the Duke Forest Free
Air Carbon Dioxide Enrichment (F.A.C.E.) experiment. The
technician's primary responsibility will be to help
maintain field and laboratory experiments and to assist
with soil and plant sample collection and processing.
Successful applicants must be able to work independently
and reliably. Course work and/or experience in biology,
botany, ecology, environmental science, or related
curriculum is required. Prior field or laboratory
experience is strongly preferred, but willingness and
ability to learn is required. Familiarity with standard
soil methods and/or with plant harvesting would be a
bonus.
To apply or to request additional information please contact:
Emily Bernhardt
Nicholas School of the Environment and Earth Science
Box 90328
Duke University
Durham, NC 27708-0328
ebernhar@duke.edu
If applying, send your resume, a cover letter describing your interest
in the job, and the names and contact information for 3 references
(electronic submission of this information is encouraged).
------------------------------
Date: Tue, 19 Mar 2002 09:36:51 -0800
From: Bill Standley <standleyb@WILDLIFER.COM>
Subject: Upcoming Workshop: Amphibians of the San Francisco Bay Area - May 4
5,
2002
The Western Section of The Wildlife Society and the San Francisco Bay Area
Chapter are sponsoring a workshop on Amphibians of the San Francisco Bay
Area to be held on May 4 and 5, 2002, at Sonoma State University in Rohnert
Park, California.
The workshop is designed to provide participants with training in the
identification, natural history, ecology, and conservation issues of
amphibians found in the Bay Area. Participants will learn survey
techniques, potential causes of amphibian declines, and resources agencies'
management plans and policies.
For more information and the online registration form, please check the
Western Section web site at http://www.tws-west.org
------------------------------
Date: Tue, 19 Mar 2002 13:34:25 -0500
From: Karen Claxon <kclaxon@EARTHLINK.NET>
Subject: Weather deals serious blow to monarchs
http://www.arizonarepublic.com/arizona/articles/0318monarch18.html
Weather deals serious blow to monarchs
Chicago Tribune
March 18, 2002
Scientists fear that as much as 80 percent of the monarch butterfly
population may have been killed when a January storm struck the
butterflies' winter colonies in Mexico, according to Journey North, a
citizen science project funded by Annenberg/CPB, a partnership of the
Annenberg Foundation and the Corporation for Public Broadcasting.
As the butterflies migrate north this spring, people are asked to record
monarch sightings for Journey North's Monarch Migration Project at
www.learner.org/jnorth. The site also offers resources for teachers.
Registration is required for families or classrooms that want to become
monarch lookouts, but it is free and can be completed online.
Butterfly reports assist analysis of how weather and other threats, both
natural and human, affect butterflies.
Journey North said that the monarch population is believed to be at its
lowest in the 27 years the project has collected data.
------------------------------
Date: Tue, 19 Mar 2002 13:39:26 -0500
From: Karen Claxon <kclaxon@EARTHLINK.NET>
Subject: Biologists target invasive species in Alaska
http://www.adn.com/alaska/story/785186p-852198c.html Noting the threat
posed to native Alaska animals by such invasive species as Atlantic
salmon and northern pike, the state Department of Fish and Game has
worked up a strategy to block new invaders and go after those that have
already begun to spread
------------------------------
Date: Tue, 19 Mar 2002 11:58:08 -0700
From: David Inouye <di5@umail.umd.edu>
Subject: Job: Research Assistant, IES, NY
Research Assistant Position available at the Institute of Ecosystem Studies,
Millbrook, NY (www.ecostudies.org)
Position #:
02011
Date:
March 19, 2002
TITLE: Research Assistant I
DUTIES: Coordinate and carry out research that investigates the effects of
grassland plants on soils. Duties include laboratory analyses of plant and
soil samples, setup and maintenance of greenhouse experiments, field
sampling of plants and soils, and data entry. Position requires ability to
work independently, good organizational ability, and close attention to
detail.
DURATION: Full-time, lasting for a period of one year, with
possibility of extension for a second year. Starting date is flexible, but
prefer candidates who can start May to early June 2002.
SALARY: Commensurate with experience
BACKGROUND: Bachelors degree in environmental science, biology, or
related field. Previous research experience is preferred.
CLOSING DATE: April 12, or when position is filled
SUPERVISOR: Dr. Valerie Eviner
TO APPLY: Send cover letter with resume and the names and telephone
numbers of three professional references to:
Jessica Greenstein
Manager of Human Resources
Institute of Ecosystem Studies
Job Ref. #02011
P.O. Box AB
Millbrook, New York 12545
E-mail: jobs@ecostudies.org
AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION EMPLOYER-MIN/FEM/VET/DISAB
------------------------------
Date: Tue, 19 Mar 2002 14:26:24 -0500
From: "David C. Glenn-Lewin" <david.glenn-lewin@UNITY.EDU>
Subject: Looking for bison pictures
I have a friend who is looking for non-copyrighted images of bison. I'd
appreciate any direction that you could give me. I'll pass it on.
Thanks in advance.
dgl
David C. Glenn-Lewin
President
Unity College
90 Quaker Hill Rd.
Unity ME 04988
tel: 207-948-3131 ext 221
FAX: 207-948-5626
david.glenn-lewin@unity.edu
------------------------------
Date: Tue, 19 Mar 2002 15:35:23 -0600
From: Eric Ribbens <E-Ribbens@WIU.EDU>
Subject: Re: Looking for bison pictures
David and fellow ECOLOG-ers:
While I can't speak specifically to non-copyrighted images (I'm one of
those curmudgeons who thought the whole point of the web was about free
sharing, but that's another issue ...), there is a great feature of Google
that is worth knowing about.
If you go to google's search engine at http://www.google.com, you can click
on the "Images" button, which gives you a search engine specifically for
www images. Type in the word bison, for example, and it will retrieve and
show you thumbnails of many images of bison, ranging from bison on mug
coasters to gorgeous photographs.
If you need non-copyrighted images, you probably will have to go look at
each image and check with the webpage creator about whether or not it is
copyrighted, because I believe the presumption these days is that it is
copyrighted unless you say it ain't.
As usual, I disclaim all responsibility for problems while eagerly
accepting credit for anything that works ...
At 01:26 PM 3/19/02, David C. Glenn-Lewin wrote:
>I have a friend who is looking for non-copyrighted images of bison. I'd
>appreciate any direction that you could give me. I'll pass it on.
>Thanks in advance.
>
>dgl
>
>
>David C. Glenn-Lewin
>President
>Unity College
>90 Quaker Hill Rd.
>Unity ME 04988
>
>tel: 207-948-3131 ext 221
>FAX: 207-948-5626
>
>david.glenn-lewin@unity.edu
------------------------------
Date: Tue, 19 Mar 2002 13:42:55 -0800
From: David Thomson <dthomson@HARVEYECOLOGY.COM>
Subject: summary of responses on nonparametric stats question
Dear list,
I would like to thank all of you who replied to my question. I am
summarizing the responses at the request of several people. The original
question is copied first (another similar archive is copied below). I was
interested in univariate statistics but it seems that several people were
thinking multivariate from my question. Both are included below.
Best Regards,
David Thomson
Restoration Ecologist
HT Harvey and Associates
3150 Almaden Expressway Suite 104
San Jose, CA 95118
PH (408) 448-9450 ext. 410
FAX (408) 448-9454
dthomson@harveyecology.com
============================================================================
=====
Is there something equivalent to a Kruskall-Wallis test for multiple
independant variables? If not, what are the problems with running separate
K-W tests on each variable? Would they be similar to running separate
one-way ANOVAs?
============================================================================
=====
I was interested in this too, and a quick google search revealed
1980 Katz, B.M., and McSweeney, M. "A Multivariate Kruskal-Wallis Test
with Post Hoc Procedures." Multivariate Behavioral Research, 15, 281-297.
Haven't looked at the paper.
_______________________________________________________________________
Don McKenzie, Quantitative Fire Ecologist
Fire and Environmental Research Applications Team
Seattle Forestry Sciences Lab, USDA Forest Service
4043 Roosevelt Way NE
Seattle, WA 98105-6497, USA
donaldmckenzie@fs.fed.us
(206)732-7810; fax (541)732-7801
============================================================================
=====
I'm not sure what manual you're reading, but I just had to read up on K-W
tests this week so I think I can answer this. The K-W test is for k
independent variables - that is, for multiple variables. You can run a
ranks
test and then an ANOVA to get close to the same answer, but the K-W is more
robust. If you have only two variables, then you can do a Mann-Whitney U
test. K-W incorporates all the variables.
I read up on this in Chapter 10 (Non-parametric ANOVAs) in the SAS manual.
I
couldn't tell you off hand which one, but it's all the same.
Cheers
Helen
Helen Hull-Sanders
Department of Entomology and Plant Pathology
301 Funchess Hall
Auburn University
334-844-2671 lab
334-844-5006 office
334-844-5005 fax
============================================================================
=====
If I read your e-mail correctly, you are interested in a non-parametric
equivalent to a MANOVA. One approach to this problem is to run a normal
MANOVA on ranked data (rank transformation). Conover (1999) discuss this
method. [Conover, WJ. 1999. Practical Nonparametric Statistics, 3rd ed.
John Wiley and Sons, New York, USA]. Be aware, though, that there may be
some
concerns with rank transformations and interaction terms (see Seaman et al.
1994. Caveat emptor: rank transform methods and interaction. TREE
9:261-263).
Hope this is helpful.
Cheers,
Ian Dickie
Research Associate
University of Minnesota
Department of Forest Resources
============================================================================
=====
Hi David,
I have used non-parametric ranked ANOVA for multiple independent variables
(in SAS: PROC RANK GLM) with good success. This test ranks your data and
then performs the ANOVA, and it can be used in place of the K-W test. By my
understanding, running separate K-W tests on each variable is "double
dipping" into your data, i.e., I think by incorporating all independent
variables into one test, the error rates are more conservative and thus
you're less likely to make a Type I error.
Good luck!
Rachel
Rachel K. Thiet
Ph.D. Candidate
Plant and Soil Ecology Laboratory
OSU Department of Evolution, Ecology,
and Organismal Biology
Phone: (614) 292-1688
e-mail: thiet.1@osu.edu
============================================================================
=====
Although I'm not totally sure if I'm answering your questions, I was going
to suggest that you check out Marti Anderson's website.
www.stat.auckland.ac.nz/people/marti
<http://www.stat.auckland.ac.nz/people/marti>
I've been using her distance-based non-parametric manova to analyze
phytoplankton and zooplankton community composition data (many species) from
a 4-factor experiment. But you can analyze any general linear model using
any distance metric for any experimental or regression-style design for 1 to
as many response variables using randomizations with one of her computer
programs. Making your own program based on her and her colleagues stats
theory is pretty easy, too.
Hope that helps, not sure if it does.Spencer
David:
You can use Marti's theory and software for univariate analyses for any
design... the multivariate part is just a bonus if you have that kind of
data. She and colleagues have all of the randomization test techniques
worked out, too -- her programs give you options. So I'd still recommend
her programs for you with two-way designs and uni-variate data.
Spencer
************************************
Spencer Hall
Department of Ecology and Evolution, University of Chicago
1101 E. 57th St., Chicago, IL 60637
Phone: (Office) 773/702-3341; FAX: 773/702-9740
e-mail: srhall@uchicago.edu
============================================================================
=====
I ran into the same problem. If you plan on running multiple K-W tests, you
need to adjust your overall alpha level to account for running multiple
comparisons (just by chance there is a greater liklihood of a committing a
type I error). I used the Bonferroni adjustment that takes into account the
number of comparisons being made and the alpha level determined at the
beginning of the study. For example, I wanted to use an alpha level of 0.05,
but because I ran close to two dozen seperate comparisons, my adjusted alpha
(again, Bonferronni procedure) was 0.0009. Meaning that statistical
significance was found only when the
p-value was less than 0.0009.
Jason
Jason R Applegate
LCTA Coordinator
Fort AP Hill, Va.
============================================================================
=====
Finally, another archive from an earlier question posed on the list:
Here's some responses that I have kept from the last time this question came
around on the listserve. I believe that they pertain to your question if
I'm reading it as doing a factorial Kruskall-Wallis. As for doing separate
K-W tests, you lose out on testing the effects of interactions among
independent variables.
Good luck,
Jim
James M. Long, Ph.D.
Freshwater Fisheries Research
South Carolina Department of Natural Resources
1921 VanBoklen Road
Eastover, SC 29044
(803) 353-8232 phone
(803) 353-8552 fax
Hello all--
>
> Is is possible to do a two-way nonparametric ANOVA with
> interactions? All the standard tests assume no interaction or do not
> consider them at all, right?
>
> Thanks,
> Cindy
>
> _______________________
> Cynthia Kolar
> PhD Candidate
> Department of Biological Sciences
> University of Notre Dame
> Notre Dame, IN 46556
Cynthia,
Yes, you can do a non-parametric ANOVA, essentially a 2-way Kruskall-
Wallis test. I do not have Zar in front of me, but if memory serves, you do
an
ANOVA on the ranks of the data, and then test the factors by dividing the
effect mean square by the total sum of squares. This is distributed as a
chi-
square with the numerator degrees of freedom. [I disavow any claims on my
memory, so check this to be sure.]
Sam Scheiner
I'm not aware of any 2-way nonparametric ANOVA that will allow a direct test
for interactions. Assuming your main reason for wanting a nonparametric
test is violation of assumptions (normality, homogeneity of variances), I
often take the approach suggested by Zar (1996, p. 269) for randomized block
designs, i.e. I rank the data over all categorical variables, do the ANOVA
on the ranked data, and compare the results with ANOVA on untransformed
data. If the results of both analyses are similar (and my residual plots
from ANOVA do not suggest extreme non-normality or heterogenous variances),
I'm more comfortable with accepting the results from untransformed data. Of
course there are other transformations that may be entirely appropriate for
the type of data you are analyzing (e.g., logarithm for multiplicative
effects), but I typically stay away from others like arcsine and square-root
if my sample sizes are equal (Zar 1996, p. 279-282).
Also, without knowing anything about the type of data you are analyzing,
ANOVA is typically very robust to all but the most extreme departures from
normality and equal variances if the sample sizes are equal. See Zar and
the citation below for a good review.
Glass, G.V., P.D. Peckham and J.R. Sanders. 1972. Consequences of failure
to meet assumptions underlying the fixed effects analyses of variance and
covariance. Review of Educational Research 42:239-288.
***********************
Nathan Rudd
Stewardship Biometrician
The Nature Conservancy
Oregon Field Office
(503) 230-0707 ext. 344
nrudd@tnc.org
Hi Cynthia,
I looked into using rank transformations to test interactions in a
factorial study. Seaman et al. (1994) found that the rank transformation
of Conover and Iman (1981) is not appropriate for testing interactions
among effects in a factorial design as it can result in inflated Type I
error rates. In addition, there is a loss of power to detect interactions
with significant main effects. Salter and Fawcett (1993) demonstrated
that the aligned rank test (ART) (Salter and Fawcett 1985) is nearly as
powerful as the F test when data meet the assumptions of normality and is
much more powerful when these assumptions are not met. The raw data are
first aligned by subtracting least-squares estimates of the main effects
from the original observations and then ranked.
Conover, W.J. and Ronald L. Iman. 1981. Rank transformations as a bridge
between parametric and nonparamentric statistics. Am. Statistician
35:124-133.
Salter, K.C. and R.F. Fawcett. 1985. A robust and powerful rank test of
treatment effect in balanced incomplete block designs. Commun. Statist.
Simula. Computa. 14:807-828.
Salter, K.C. and R.F. Fawcett. 1993. The ART test of interaction: a
robust and powerful rank test of interaction in factorial models. Commun.
Statist. Simula. 22:137-153.
Seaman, John W., Jr., Susan C. Walls, Sharon E. Wide and Robert G. Jaeger.
1994. Caveat emptor: rank transform methods and interactions. Trends
Ecol. Evol. 9: 261-263.
Cindy Salo
Cindy Salo
School of Renewable Natural Resources
Room 301 BioSciences East Bldg. #43
University of Arizona Tucson, AZ 85721-0043
Phone: 520-400-2462 Fax: 520-626-7401
Web page: http://ag.arizona.edu/~csalo/cv.html
------------------------------
Date: Tue, 19 Mar 2002 14:42:01 -0600
From: Joseph Schwartz <Joseph.Schwartz@CITYOFCARROLLTON.COM>
Subject: Re: Weather deals serious blow to monarchs
My guess is that at some time over the millennia, this type of incident has
occurred before, yet we still have Monarchs.
But this issue brings up an interesting question. Why would Monarchs evolve
to over winter in one location, susceptible to extinction by one
catastrophic event?
Joseph Schwartz
Pollution Control Coordinator
City of Carrollton Environmental Services
972-466-3060
-----Original Message-----
From: Karen Claxon [mailto:kclaxon@earthlink.net]
Sent: Tuesday, March 19, 2002 12:34 PM
To: ECOLOG-L@LISTSERV.UMD.EDU
Subject: Weather deals serious blow to monarchs
http://www.arizonarepublic.com/arizona/articles/0318monarch18.html
Weather deals serious blow to monarchs
Chicago Tribune
March 18, 2002
Scientists fear that as much as 80 percent of the monarch butterfly
population may have been killed when a January storm struck the
butterflies' winter colonies in Mexico, according to Journey North, a
citizen science project funded by Annenberg/CPB, a partnership of the
Annenberg Foundation and the Corporation for Public Broadcasting.
As the butterflies migrate north this spring, people are asked to record
monarch sightings for Journey North's Monarch Migration Project at
www.learner.org/jnorth. The site also offers resources for teachers.
Registration is required for families or classrooms that want to become
monarch lookouts, but it is free and can be completed online.
Butterfly reports assist analysis of how weather and other threats, both
natural and human, affect butterflies.
Journey North said that the monarch population is believed to be at its
lowest in the 27 years the project has collected data.
------------------------------
Date: Tue, 19 Mar 2002 16:00:24 -0500
From: EnviroNetwork@NATURALIST.COM
Subject: Environmental Job Openings from EnviroNetwork
Title: Seakayak Tour Leader
Company: Sea Quest Expeditions / Zoetic Research
Location: Friday Harbor, Washington
For more information click below:
http://www.environetwork.com/jobs/detail.cfm?temp=jobdetail&id=1217355
Title: Development Director
Company: The Laguna de Santa Rosa Foundation
Location: Sebastopol, California
For more information click below:
http://www.environetwork.com/jobs/detail.cfm?temp=jobdetail&id=1211355
Title: Development Director
Company: WildAid
Location: San Francisco, California
For more information click below:
http://www.environetwork.com/jobs/detail.cfm?temp=jobdetail&id=1205355
Title: Assistant to the Editor
Company: Mother Jones Magazine
Location: San Francisco, California
For more information click below:
http://www.environetwork.com/jobs/detail.cfm?temp=jobdetail&id=1199355
Title: Environment Reporter
Company: Major West Coast Daily
Location: , California
For more information click below:
http://www.environetwork.com/jobs/detail.cfm?temp=jobdetail&id=1193355
------------------------------
Date: Tue, 19 Mar 2002 16:13:08 -0500
From: Jessica Lomanno <jlomanno@FIELDSTUDIES.ORG>
Subject: Center Director Position Open at the Turks and Caicos Islands!
Dear Colleagues,
I am writing to let you know that The School for Field Studies (SFS) invites
applications and nominations for the position of Director of its Center for
Marine Resource Studies (CMRS) in the Turks & Caicos Islands, British West
Indies. The Director will be expected to make a multiple-year commitment and
will be based at the CMRS effective approximately July 15, 2002 in order to
provide for overlap and training with the outgoing director who will leave
at the end of our second summer session in mid-August.
The School for Field Studies, headquartered in the US, is the oldest and
largest private educational institution exclusively devoted to teaching and
actively engaging undergraduate college students in community-based
environmental research and problem solving. Established in January 1990,
the SFS Center for Marine Resource Studies on South Caicos Island is
dedicated to developing scientifically based, culturally and politically
acceptable, and economically feasible policy recommendations that will lead
to the sustainable use, development and stewardship of the marine resources
of the Turks and Caicos Islands.
South Caicos Island, the traditional center of the TCI's conch and lobster
fishing industry, is becoming increasingly popular as a dive destination. In
addition, key marine resources such as fin fish, conch and lobster are being
over-fished by the local community to meet increasing international demand.
Both in turn negatively influence coral reef ecology. Coral reefs are the
foundation of the developing diving industry on South Caicos. Increasing
dive tourism and a decline in the catch of marine resources will have both
environmental and economic impacts on the traditional way of life in the
South Caicos community. The 5-year research plan currently in development at
the CMRS will provide information and data that government and community
partners need to sustainably manage their marine resources and developing
tourism industry.
The Director of the CMRS is responsible to the US-based Vice President of
Operations for the overall operation of the center and its programs. SFS is
seeking an individual who can provide active leadership with respect to the
academic, research, operational, and risk management challenges of this
unique residential learning community. Among the Director's priorities will
be the finalization and implementation of the Center's five-year research
plan; the maintenance of positive relations with partner institutions in the
TCI, including the government, the fishing industry and the local community;
and the overall future direction of the CMRS. The successful candidate will
possess a significant academic (Ph.D.) and research profile in a
marine-related area relevant to the focus of the center; a record of
administrative accomplishments including financial and personnel management
and fundraising experience. Personal experience living and working in the
region would be a strong asset.
The Search Committee has begun consideration of nominations, applications,
and expressions of interest and will continue this process until a suitable
candidate is identified. Please direct submissions or inquiries in
confidence the address below citing Job Reference 1162. For more
information on SFS and the Center for Marine Resource Studies see the Work
for SFS section of our web site: http://ww.fieldstudies.org.
Jessica Lomanno
International Staff Recruiter
The School for Field Studies
16 Broadway
Beverly, MA 01915
Phone: (978) 922-7200 x306
Fax: (978) 927-5127
Email: jlomanno@fieldstudies.org
Web: http://www.fieldstudies.org
------------------------------
Date: Tue, 19 Mar 2002 13:59:40 -0800
From: David Kirschtel <dk01@U.WASHINGTON.EDU>
Subject: Re: Looking for bison pictures
David-
Most of the federal agencies have some sort of photo archive. Some
specific sites to take a look at are:
USDA Online Photo Center
http://www.usda.gov/oc/photo/opclibra.htm
USFWS National Image Library (assuming the DOI web is back online)
http://images.fws.gov/index.html
BLM Digital Photo Library (assuming the DOI web is back online)
http://www.photos.blm.gov/
Also the UC Berkeley Digital Library Project (need to check the rights
on individual images, some are restricted others aren't)
http://elib.cs.berkeley.edu/photos/about.shtml
"David C. Glenn-Lewin" wrote:
>
> I have a friend who is looking for non-copyrighted images of bison. I'
> appreciate any direction that you could give me. I'll pass it on.
> Thanks in advance.
==================================================================
David Kirschtel,Ph.D. * dk01@u.washington.edu * 206.543.1844
Biology Program, 318 Hitchcock Hall, Box 355320
Univ. of Washington, Seattle, WA 98195-5320
------------------------------
Date: Tue, 19 Mar 2002 15:03:30 -0800
From: David Thomson <dthomson@HARVEYECOLOGY.COM>
Subject: Re: Weather deals serious blow to monarchs
Unfortunately I cannot remember the researcher's name but a Monarch
researcher spoke on NPR just after the event and although I remember
"catastrophic" he did not mention "extinction". I think he estimated the
loss at ~75% (my memory not a quote).
Interestingly, he did say that the number of dead led him to believe that
the population density in that area was much greater than he had thought.
David Thomson
(not a Monarch scientist)
-----Original Message-----
From: Ecological Society of America: grants, jobs, news
[mailto:ECOLOG-L@LISTSERV.UMD.EDU]On Behalf Of Joseph Schwartz
Sent: Tuesday, March 19, 2002 12:42 PM
To: ECOLOG-L@LISTSERV.UMD.EDU
Subject: Re: Weather deals serious blow to monarchs
My guess is that at some time over the millennia, this type of incident has
occurred before, yet we still have Monarchs.
But this issue brings up an interesting question. Why would Monarchs evolve
to over winter in one location, susceptible to extinction by one
catastrophic event?
Joseph Schwartz
Pollution Control Coordinator
City of Carrollton Environmental Services
972-466-3060
-----Original Message-----
From: Karen Claxon [mailto:kclaxon@earthlink.net]
Sent: Tuesday, March 19, 2002 12:34 PM
To: ECOLOG-L@LISTSERV.UMD.EDU
Subject: Weather deals serious blow to monarchs
http://www.arizonarepublic.com/arizona/articles/0318monarch18.html
Weather deals serious blow to monarchs
Chicago Tribune
March 18, 2002
Scientists fear that as much as 80 percent of the monarch butterfly
population may have been killed when a January storm struck the
butterflies' winter colonies in Mexico, according to Journey North, a
citizen science project funded by Annenberg/CPB, a partnership of the
Annenberg Foundation and the Corporation for Public Broadcasting.
As the butterflies migrate north this spring, people are asked to record
monarch sightings for Journey North's Monarch Migration Project at
www.learner.org/jnorth. The site also offers resources for teachers.
Registration is required for families or classrooms that want to become
monarch lookouts, but it is free and can be completed online.
Butterfly reports assist analysis of how weather and other threats, both
natural and human, affect butterflies.
Journey North said that the monarch population is believed to be at its
lowest in the 27 years the project has collected data.
------------------------------
Date: Tue, 19 Mar 2002 15:43:40 -0800
From: "Nowak, Bob" <Nowak@CABNR.UNR.EDU>
Subject: Position Announcement: Rangeland Ecologist
We have a position open for a M.S.-level Rangeland Ecologist as part of a
multi-disciplinary rangeland ecology research project. The project's
overall goal is to identify concepts and management strategies that are
needed to control the invasive annual grass Bromus tectorum (cheatgrass) and
to restore native plants on northern Great Basin rangelands. The Ecologist
will help set up a series of experiments and then collect and analyze data
and samples from those studies. The successful candidate will play a key
role in meetings the goals and objectives of the project and will interact
with scientists and managers across the region. For more information and a
complete job description, please contact Bob Nowak (see contact information
below) or access the University of Nevada, Reno job board:
http://jobs.unr.edu/ -- click on "Professional Jobs", then search for
"Rangeland Ecologist". Consideration of applications begin May 1, 2002.
**********************************************************************
Robert S. Nowak, Professor
Department of Environmental & Resource Sciences / MS 370
University of Nevada, Reno
Reno, NV 89557
USA
Voice: 775-784-1656
FAX: 775-784-4789
email: nowak@cabnr.unr.edu
web: http://www.ag.unr.edu/ers/nowak.html
**********************************************************************
------------------------------
Date: Tue, 19 Mar 2002 15:49:32 -0700
From: Brian Powell <bpowell@AG.ARIZONA.EDU>
Subject: job announcement
Job Announcement
Biologist
We are seeking a qualified field ecologist/botanist/biologist to assist
personnel of the Sonoran Desert National Park Inventory and Monitoring to
complete inventories of vascular plants and vertebrates in 11 national
parks in the Sonoran Desert ecoregion. The successful candidate will
perform a wide variety of functions including field research, supervising
field crews, analyzing and summarizing data, report writing, presentations,
and writing peer-reviewed articles.
The ideal candidate would have considerable experience identifying plants
of the region. However, we will consider candidates with experience with
herps, birds, and/or mammals. Candidates must possess excellent writing,
analytical, and quantitative skills and be able to communicate the
project's objectives, methods, and results to a wide range of
audiences. They must also have a proven ability to work as a team
member. Genuine enthusiasm about desert ecology and organisms is a must.
The minimum qualifications for this position are a Bachelor's degree in
biological sciences, wildlife management or related field and four years of
related experience. Individuals with a Master's degree are encouraged to
apply.
This position is a full-time benefited position with the University of
Arizona. Pay is approximately $31,000-$34,000 per year plus excellent
benefits. The position will be for at least one year, and may be extended
for an additional one or two years.
Direct questions regarding this position to bpowell@ag.arizona.edu. To
apply, send a resume with three references by email to
bpowell@ag.arizona.edu (put "Biology Job" on the subject line) or mail to:
Brian Powell
125 Biosciences East Bldg.
University of Arizona
Tucson, Arizona 85721
The job will remain open until filled.
Brian Powell
Inventory Coordinator
Sonoran Desert National Parks
Inventory and Monitoring Program
125 Biological Sciences East Bldg.
University of Arizona
Tucson, AZ 85721
(520) 670-5830
(520) 405-6954 (cell)
(520) 670-5611 (fax)
------------------------------
Date: Tue, 19 Mar 2002 16:32:57 -0700
From: Andrea Litt <arlitt@AG.ARIZONA.EDU>
Subject: field assistants needed
Field Assistants Needed
------------------------------------
Field assistants (full-time, short-term, $8.50/hour) needed to collect
small mammal and invertebrate data for a research project at Fort Huachuca
Military Reservation in southeastern Arizona investigating fire-based
restoration of biodiversity in grassland ecosystems. Field housing (in
Sierra Vista, AZ), transportation between the field housing and the study
plots, and occasional transportation between Tucson and Fort Huachuca will
be provided. Sampling will begin in early to mid-May 2002.
Duties:
- Trap small mammals and invertebrates on established study plots at Fort
Huachuca.
- Accurately collect and record data on captured small mammals (e.g.,
species identification, body measurements, sex determination).
- Process captured invertebrate specimens and accurately record data.
- Work long hours in adverse field conditions (e.g., beginning early in the
morning, in extreme weather conditions, etc.), alone and/or as part of a
team, with an irregular work schedule.
- Employees will be trained and required to follow hantavirus safety
precautions.
- Assist with some computer data entry and/or proofing.
For more information or to apply, please contact Andrea Litt
(arlitt@ag.arizona.edu). Please attach a current resume.
Andrea R. Litt
University of Arizona
School of Renewable Natural Resources
104 Biological Sciences East
Tucson, AZ 85721
arlitt@ag.arizona.edu
------------------------------
Date: Tue, 19 Mar 2002 17:44:46 -0600
From: Volker Radeloff <radeloff@FACSTAFF.WISC.EDU>
Subject: UW-Madison Position Announcement
--- Apologies for any cross postings ---
Position Announcement for a Postdoctoral Research Associate and Graduate
Research Assistant at the PhD level
University of Wisconsin-Madison
Department of Forest Ecology and Management
PROJECT
Wildland fires have emerged as one of the most pressing forest
management concerns and housing units in the wildland urban interface
(WUI) are at highest risk. However, few studies have mapped and
quantified the WUI for an entire region, and it remains unclear if
suburban and rural sprawl increase the WUI area, thereby increasing the
risk of future damage. The objective of this project is to map the WUI
across the U.S., estimate current fire danger and predict future changes
in fire danger related to sprawl. Funding is available for one
Postdoctoral Research Associate and one Graduate Research Assistant at
the PhD level to complement our research team.
RESEARCH TEAM
Recent decades witnessed widespread sprawl, both at the urban fringe and
in rural areas. The impacts of this development on forest ecosystems
remain largely unknown. We represent an interdisciplinary team of
researchers at the University of Wisconsin-Madison integrating applied
demography (to monitor and forecast housing development) and forest
landscape ecology (to assess the impact of these developments on forest
ecosystems and their management). Our research utilizes U.S. Census
data and satellite land cover classifications; our approach is
quantitative and based on GIS, spatial statistics, and simulation
modeling.
POSITION DESCRIPTIONS AND REQUIREMENTS
Salaries and research support are highly competitive. Both the postdoc
and the graduate student positions are available immediately and should
be filled by fall of 2002. An earlier start date is preferred; a later
start date is negotiable.
Requirement for the postdoc position is a Phd (for the Graduate Research
Assistant position a MS degree) in forestry, natural resources
management, geography, or other related discipline and an interest in
interdisciplinary research. Applicants should have a background in fire
ecology or fire management. Experience with GIS and spatial statistics
is desirable. Excellent writing skills are essential.
APPLICATION PROCESS
Applicants must send a CV, cover letter including their research
interests, academic/professional background, and the names and contact
addresses of three references to:
Volker Radeloff, Department of Forest Ecology and Management, University
of Wisconsin, 1630 Linden Drive, Room 111 Russell Laboratories, Madison
WI 53706, radeloff@facstaff.wisc.edu, (608) 263-4349.
Applications will be reviewed upon receipt and the review will continue
until the positions are filled. Applications received by April 10th,
2002 will be guaranteed consideration.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Volker Radeloff
Department of Forest Ecology and Management
1630 Linden Drive
Madison, WI 53706, USA
radeloff@facstaff.wisc.edu
Phone: +1-608-263-4349
Fax: +1-608-262-9922
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We shall have to learn to refrain from doing things
merely because we know how to do them.
Sir Theodore Fox, 1965
------------------------------
End of ECOLOG-L Digest - 18 Mar 2002 to 19 Mar 2002 (#2002-70)
**************************************************************
ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
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