Do you have scientific basis that the US is a sink for bald eagles? As I
understand it, with the mountain lions the source-sink dynamics occur on a
much smaller scale than countries. And a sink is really a sink. Like ranches
that literally kill the animals when the intrude, or areas where hunting is
more active. I don't know of any active killing of bald eagles and such a
thing is prohibited, no? Just because we may not be a source does not
necessarily mean we're a sink. The bald eagles are on the rise in the US
aren't they? I also thought they WERE removed from the ESA, weren't they??
Wendee
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Wendee Holtcamp, M.S. Wildlife Ecology
Freelance Writer * Photographer * Bohemian
http://www.wendeeholtcamp.com
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-----Original Message-----
From: Ecological Society of America: grants, jobs, news
[mailto:[EMAIL PROTECTED] On Behalf Of William Silvert
Sent: Saturday, September 01, 2007 4:47 AM
To: [email protected]
Subject: Re: mountain lions/source sink management
One interesting example of source-sink management is the bald eagle. Despite
the fact that it is the US national bird, the US is a sink for this species,
and bald eagles are imported from Canada.
But I know of no neutral ground between the US and Canada!
Bill Silvert
----- Original Message -----
From: "WENDEE HOLTCAMP" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, August 31, 2007 11:57 PM
Subject: mountain lions/source sink management
>I am working on an article on mountain lions, in a place where attitudes
>and
> opinions about them are pretty heated (TX). One source mentioned that in
> other states that there are "source sink" models of management and this
> sounded like a really interesting idea. Basically you have areas that
> provide a source of the mountain lions (such as protected national parks),
> sinks such as working ranches that tend to kill mountain lions, and then
> the
> idea is also that the areas between the source and the sink are "neutral"
> so
> that they can harbor some of the expanding source populations but buffer
> them from the sinks.
>
> Does anyone here have personal experience working with a mountain lion
> population following a source-sink model in a management setting? Or
> alternatively has anyone worked on models of this type of management? Feel
> free to send along others' contact info or to forward my email.
