[leps-talk] Fw: First sightings

[Woody Woods]

This could be important for beginning to establish effects of climate change
on lep populations. Three or four years ago Camille Parmesan published a
comparison of populations of E.editha early in the century and presently, and
found that over that time many populations in the southern part of the range
were gone, but many were doing very well in the north-- their range had
shifted. Since the fitness of E. editha females is highly temperature
dependent, it amounted to good evidence that rising temperatures were pushing
the species range north. First sighting info is different, of course, but it
seems clear that building a good database of this information will become
increasingly important.

Woody

"Heath, Fred" wrote:

> It also seems obvious that having this first sighting data might allow
> someone in the future, using weather data such as temperatures and rainfall
> over the months preceding these emergence dates to do some correlation
> analysis to help understand better the forces driving these emergences.
> ---Best regards, Fred
>

--
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William A. Woods Jr.
Department of Biology
University of Massachusetts Boston
100 Morrissey Blvd
Boston, MA 02125

Lab: 617-287-6642
Fax: 617-287-6650
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