Re: [vernalpool] Re: Early spring migration

Then there is the question - with no insulating snow cover, did many of
the salamanders go deep enough to not freeze?

/Jane/
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On 2/22/2012 4:06 PM, Shep Evans wrote:
>
> Matt:
>
> Do I remember correctly some research on ground temperature reaching
> 41 degrees at some given depth as a trigger?
>
> Shep Evans
>
> From: Alexandra Echandi <aechandiesq@gmail.com
> <mailto:aechandiesq%40gmail.com>>
> To: vernalpool@yahoogroups.com <mailto:vernalpool%40yahoogroups.com>
> Sent: Wednesday, February 22, 2012 3:36 PM
> Subject: Re: [vernalpool] Re: Early spring migration
>
> maybe Mercury? it will be visible tonight right after sunset!
>
> On Wed, Feb 22, 2012 at 3:19 PM, matt burne <mattburne@gmail.com
> <mailto:mattburne%40gmail.com>> wrote:
>
> > Good question!! As far as I know, no one knows. It's reasonable to
> expect
> > that there are some queues beyond just temperature and frost to keep
> them
> > from a false start in Jan or Feb thaws. Maybe that's a frost-depth
> thing
> > in normal years. Maybe they are afraid of Orion?
> >
> > Matt
> >
> > On Wed, Feb 22, 2012 at 8:40 AM, Jessica Kagle
> <jessica_kagle@hotmail.com <mailto:jessica_kagle%40hotmail.com>
> > >wrote:
> >
> > > **
> > >
> > >
> > >
> > > Matt, is there no correlation between increasing daylight amounts and
> > > amphibian migration? Are they strictly basing their timing on
> temperature
> > > and frost?
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
> ------------------------------------
>
> Yahoo! Groups Links
>
> [Non-text portions of this message have been removed]
>
>

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