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Wednesday, June 15, 2011

DEWITT MIDDLE SCHOOL HITS THE LAKE!



Dewitt 6th Graders conducted a total of nine hours of sampling on Cayuga between June 13 & 14, and made some important observations. First, we are seeing the end of our first algae bloom on Cayuga- for the last week, water clarity has been reduced by the presence of the yellow-green algae DINOBRYON at incredibly high concentrations (pictured). As this particular species declines, we are seeing increase clarity (now averaging 4 meters) and more bio-diversity in the plankton community. Summer, warm-water species are moving in!Lake water temperatures have also stabilized somewhat, after a very fast warming period. Its early, but our Dewitt teams collected data to suggest that a thermocline is already established in Cayuga between 20 and 25 meters down. At this point, the water rapidly cools from about 62 Deg. F. to 48 F. That's a big change! Nice work, Dewitt! (Full report available under trip reports.)

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