Re: Introduced Sp. Question

So humans are qualitatively different from, say, birds that pass seeds through their guts? I doubt there's a scientific basis for such a distinction. Jane Shevtsov At 09:35 AM 5/2/2006, [EMAIL PROTECTED] wrote: Apparently I responded too quickly without choosing my words carefully enough. I

Introduced Sp. Question

List Members Can anyone help with an answer to the following question from another list. Thank you in advance. Mike Nolan At what point does an introduced species become recognized as native to an ecosystem? Thanks. Ted Cox Bellevue High School -- Call weekdays, evenings and weekends.

Re: Introduced Sp. Question

I don't believe there is a scientific answer to this question. Native means to me that a species has evolved in a particular ecosystem or ecosystems in response to environmental factors in that/those ecosystems. If we accept that definition, it is my opinion that no species introduced by man,

Re: Introduced Sp. Question

: Introduced Sp. Question I don't believe there is a scientific answer to this question. Native means to me that a species has evolved in a particular ecosystem or ecosystems in response to environmental factors in that/those ecosystems. If we accept that definition, it is my opinion that no species

Re: Introduced Sp. Question

Apparently I responded too quickly without choosing my words carefully enough. I do believe that by saying that a species evolves in response to the environmental factors within an ecosystem, I allowed for migration of an ecosystem or parts of an ecosystem in response to stresses such as

Biology of colonization or recolonization or invasion Re: Fw: [ECOLOG-L] Introduced Sp. Question

@LISTSERV.UMD.EDU Sent: Tuesday, May 02, 2006 11:43 AM Subject: Re: [ECOLOG-L] Introduced Sp. Question This seems to imply that a species is native only if it evolves in the location where it is found, and that any species which arrives by migration or other form of transport is not native. This is a very

Ecosystem boundaries Re: Introduced Sp. Question

Excellent question! Further, what are the boundaries of the ecosystem? What are the standards (is the standard) by which said boundary is defined? WT Thanks to those who focus on the essentials. At 07:08 AM 5/2/2006, [EMAIL PROTECTED] wrote: I don't believe there is a scientific answer to