Teachers work on Lake Guardian

The Lake Guardian picked up 15 teachers here a week ago so they could get first hand experience working with and learning from several scientists on board. They took samples from the bottom of the lake and analyzed, and some times counted, what they found. They wanted to see who was eating who – not a food chain but more like a food web since many critters have great variety in their diet. They were looking for Diporeia, 2 mm long shrimp-like critters that, unfortunately for them, live at the bottom of the web. Since Diporeia get eaten by everybody else, including the big fish, they figure where they find Diporeia, they will find fish. They went to one hot Diporeia spot and found a lot of fishermen. It turns out fishermen also have a way of finding where the fish are without counting Diporeia. Later, they welcomed a ‘fish expert’ on board who brought with her a bunch of fish stomachs to dissect; that’s where they find the answer to the question, who is eating who. Above, 3 of the 15 teachers stopped to talk on Monday morning before heading home. At the left is Stephanie Erickson who teaches 7th and 8th graders in St. Paul, Bo DeRemee teaches 9th grade physical science, biology and physics in Ely and Robert Tonte lives in Roseville, Michigan and teaches science to 7th and 8th graders. Check out their blog at: http://coseegreatlakes.net/weblog/
Photo taken on July 13, 2009
*submitted to the Duluth News Tribune for publication on 07-14-2009
Kenneth Newhams :