Re: invasive species--the broader, long-term perspective

I think the one distinction that has to be made (and I believe has been made by people like Davis and Gurevitch) is that there is empirical evidence of invasives causing extirpations across trophic levels (i.e. invasive predators and pathogens). It is within-trophic level (i.e. competitive excl

Re: invasive species--the broader, long-term perspective

Are your refering to The Theory of Island Biogeography by McArthur and = Wilson? =20 Malcolm L. McCallum Assistant Professor Department of Biological Sciences Texas A&M University Texarkana 2600 Robison Rd. Texarkana, TX 75501 O: 1-903-233-3134 H: 1-903-791-3843 Homepage: https://www.eagle.tamut.ed

Job:Visiting Aquatic Biologist- SUNY Fredonia

Visiting Aquatic Biologist- SUNY Fredonia SUNY Fredonia seeks candidates for a visiting one-year position in Aquatic Biology to begin in August 2006. A separate search for a tenure track position is expected to begin in Fall 2006. Candidates should be strongly committed to teaching and will

Re: Biology of Invasion

Isn't it Ag-gravating? The University of California's "Weed Handbook" is a veritable guide to native plants that have the temerity to try to hustle a living, casino-like, amongst the most destructive of (plant) invaders, crop monocultures. Most are not "invaders" at all, but just guerillas tr

biodiversity monitoring intern

Biodiversity Monitoring Intern at the Smithsonian Conservation and Research Center Intern will be responsible for assisting with butterfly, wildflower, invasive woody plant species, and mammal trip camera surveys in rural Clarke County, VA. This research project involves working with volunteer pri

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Position Overview: The Denver Zoological Foundation (DZF) and Department of Ecology and Evolutionary Biology at Princeton University are seeking a dedicated conservation biologist with a Ph.D. in Wildlife Ecology or similar field or equivalent to undertake a 3 year research project into

invasive species--the broader, long-term perspective

I realize that this interesting thread (which I have mostly just = skimmed) has been largely in search of hard data on = extinctions/extirpations. But for the longer-term view, I keep thinking of that paper (I'm sure = someone can supply the reference) that somehow used species-area curves = for d

Re: Biology of Invasion

What has been noteworthy in this extremely enlightening thread is: It appears that 'invasiveness' is treated as a chararcteristic of the species that is introduced and becomes established possibly at the expense of existing, 'native' species. I would think that the 'receptiveness' of the

REU: Invasive species monitoring

Hi, We (Dr. David Houle and I, at Florida State University in Tallahassee) have obtained a REU grant for this summer for an undergraduate student who want to work on monotoring a new invasive species (Zaprionus indianus) that we found in the USA last year. Previous experiences in Brazil and Ur

Botanist / Bio Tec USGS Announcement Number WERC 42-06-01

The announcement number on the position description I just posted is separated and I want to make sure it is clearly stated because it is vital that applicants include the number in their applications. Thanks. ANNOUNCEMENT NUMBER: WERC 42-06-01 Date Opened: 4/07/06 Date Closed: 4/14/06 Job Anno

Re: Biology of Invasion

Scott, I'm glad you mentioned this. I find that Smilax is a very common native invasive species in the forested areas of New Jersey. It is often one of the first plants that bear fruit that animals can eat in the early spring and it provides escape cover for birds and small mammals and is even

Re: Biology of Invasion

My perception, please correct me if I have mistated anything! =20 Introduced species are those that have been established by humans. Invasive species are those that have the tendency to aggressively = dominate an ecosystem and crowd out other species.=20 =20 an introduced invasive is alien and aggr

Excerpt: Graduate Education for Tropical Conservation and Development

>Date: Fri, 07 Apr 2006 08:16:55 -0700 >From: Rick Reis <[EMAIL PROTECTED]> >Subject: TP Msg. #713 A GRADUATE EDUCATION FRAMEWORK FOR TROPICAL >CONSERVATION AND DEVELOPMENT >To: [EMAIL PROTECTED] >List-Subscribe: > , > <

Botanist positions (4) USGS Western Ecological Research Center, Immediate openings.

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Re: Biology of Invasion

Hi Scott -- I get through this conundrum by separating exotic (non-native, etc.) specie= s from invasive by characterizing invasivness as a behavior, so that both native and non-native species can behave invasively or not. It seems to clarify the difference for most people. Betsy -- Elizabeth R

Re: Biology of Invasion

I haven't followed the debate this week as closely as I would have liked, but Aren't we overlooking the inherent anthropogenic effect in alien species introductions? Clearly, many animals play a role in introducing species to new areas, but never in earth's history has it occured on the scale

Re: Biology of Invasion

Dear Ecolog readers, This could open a can of worms but... how do list members define or describe "aggressive colonizers" such as Smilax rotundifolia. This vine or shrub-like species forms dense, impenetrable patches particularly in disturbed suburban forests with a lot of sun? Though a native, mu

Ph.D. assistantship - Regional Assessment of the Conservation Reserve Program

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Re: Book availablility

Dear "Seaeagle", The set of exercises by Donovan was published by Sinauer. According to their website, the set of exercises is no longer in print. However, what should be of interest to everyone is the fact that the Sinauer website also says that you may apply for permission to copy individu

Working with ordinal data

Dear all =20 I have a question about combining data on species attributes when the attri= butes are measured on an ordinal scale (i.e. less than or more than, 1 < 2 = < 3 <4 but the intervals between the scores or ratings are not equal). Norm= al mathematical operations (+ - x) generally are not pe

CFP: Ecological Restoration (and history)-- A transatlantic workshop

>Date: Thu, 06 Apr 2006 18:01:35 -0700 >Subject: CFP: "Restoring or Renaturing?"-- A transatlantic workshop >Sender: H-NET List for Environmental History <[EMAIL PROTECTED]> >Approved-by: [EMAIL PROTECTED] >To: [EMAIL PROTECTED] > >From: Marcus Hall <[EMAIL PROTECTED]> >Date: 6 April 2006 Call for