Gretchen Gerrish

Commentator - Field Notes

Gretchen Gerrish works for UW-Madison's Trout Lake Station through the Center for Limnology. She studies how evolutionary and ecological processes interact to allow natural systems to deal with change over time.

Most of her work focuses on zooplankton, microscopic invertebrates that provide the food-web link between fish and algae.

Image by umsiedlungen on

Have you ever seen a bee emerging from a hole in the ground in the spring? There are many ground nesting bee species in Wisconsin and for this month's Field Notes, Gretchen Gerrish tells us more.

Image by Jim Arnold

For this month’s Field Notes, Gretchen Gerrish of UW-Madison’s Trout Lake Station tells us of the life and death of leaves.

With wide eyes and anticipation, many stare to the skies on the night of December 24th to watch for the outline of a tiny sleigh and eight flying reindeer. But, how did Santa first come about?

turn off your computer and go outside/flickr

It’s the second Tuesday of the month, which is when we hear from our commentators in the field.

This week, Gretchen Gerrish of UW-Madison’s Trout Lake Station tells us about darkness as a resource.