Thank you all for your thoughtful responses to my coyote migration/dispersal question. Of course, your comments are helpful and meaningful to me, but I know they will do little to change the minds of landowners who insist that the Division of Wildlife intentionally released coyotes in Ohio to reduce the deer herds. Yes, Wayne, much more study and public education is needed... obviously not only in regard to the coyotes' "natural introduction," but also regarding many aspects of their ecology and behavior... such as prey selection and diet!
Thank you all again, Karen ----- Original Message ----- From: "Wayne Tyson" <[EMAIL PROTECTED]> To: <ECOLOG-L@LISTSERV.UMD.EDU> Sent: Tuesday, May 02, 2006 6:18 PM Subject: [ECOLOG-L] Biology of colonization or recolonization or invasion Re: Fw: [ECOLOG-L] Introduced Sp. Question > Opportunism and (artificial?) niche-filling? Resilience? Ripple-response > to perturbations? Adaptation? Too many feral and loose domestic cats? > Depression of other predator populations? Habitat change? Increased > study? Not enough study? > > WT > > What about mourning dove populations/distribution, for example? > > At 09:47 AM 5/2/2006, Karen Hallberg wrote: >>This is a question I have had for some time. I study coyote behavior in >>Ohio, and people are continually pointing out to me that coyotes are not >>native to the eastern United States and, therefore, "don't belong here." >>However, coyotes have migrated here on their own, possibly 200+ years ago. >>What do we call that? >> >>Karen I. Hallberg, PhD Candidate >>Borror Laboratory of Bioacoustics >>Museum of Biological Diversity >>The Ohio State University >> >>----- Original Message ----- >>From: "William Silvert" <[EMAIL PROTECTED]> >>To: <ECOLOG-L@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 >> > Eulerian approach. In particular, with global warming we can expect >> > species to drift towards the poles, so even though the entire ecosystem >> > drifts polewards, can we say that the component species cease to be >> > native? >> > >> > Bill Silvert >> > Habitat Ecologist >> > >> > ----- Original Message ----- >> > From: <[EMAIL PROTECTED]> >> > To: <ECOLOG-L@LISTSERV.UMD.EDU> >> > Sent: Tuesday, May 02, 2006 3:08 PM >> > Subject: 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, purposely or accidently, can become a "native". It might >> >>become >> >>"naturalized" (able to survive and reproduce in the new environment as >> >>are >> >>invasive exotics) but not "native". >> >> >> >> Bob Mowbray >> >> Tropical Forest Ecologist >> >> Natural Resource Management Specialist
