Nature's Storytellers

A Blog About Nature in Our DuPage Forest Preserves

Dan Grigas

Dan Grigas is an ecologist in the Natural Resources department at the District. He has a B.S. in natural resource management from Northland College and an M.S. in aquaculture and fisheries from the University of Arkansas at Pine Bluff. As the District’s fisheries ecologist, he works to provide sustainable game and non-game fisheries within District water bodies for the conservation of these species and recreational opportunities for the public. At home, he enjoys spending time with his wife and three kids, taking family fishing trips, and teaching his children about all things outdoors.

Recent Posts

Tracking the Origins of Invasive Zebra Mussels

on 11/29/18 9:09 AM By | Dan Grigas | 0 Comments | Insider Locations Natural resources Conservation Nature Invasive
Visiting a beautiful lake or pond surrounded by mixed woodlands or sprawling prairie is one of the most serene and relaxing things I can think of doing on any given day. Nothing beats hearing the hum and buzz of surrounding wildlife, feeling the gentle breeze on my face, and looking down upon the refreshing clear water. Wait, what? Pool-clear lake water? That’s not right. Healthy lakes and ponds typically have a slight greenish/brown hue to them, an indication they contain an ample amount of phytoplankton, the base of the food chain. Being too clear is often a sign that something is afoot in that aquatic ecosystem. 
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