2011 Limnology trip to Pymatuning, PA | Great Lakes Center

A group of people standing in a parking lot near some cars. A van is trailering a boat.

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Limnology is taught every other year. Staff from the Field Station help out on their field trip to Pymatuning, PA.

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A group of people stand around a large round aquarium in the floor, leaning on the railing. The wall behind them has mounted fish.

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Limnology class at PFBC Fish Hatchery in Linesville, PA.

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Looking down into a large round aquarium full of fish and a log

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There was a multistory fish tank at the PFBC Fish Hatchery in Linesville, PA.

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People stand around the bottom of a very tall fish tank, looking through various viewing windows

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There was a multistory fish tank at the PFBC Fish Hatchery in Linesville, PA.

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Two people stand near the bottom of a very tall fish tank with various viewing windows

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There was a multistory fish tank at the PFBC Fish Hatchery in Linesville, PA.

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A room full of large rectangular fiberglass fish tanks. The tanks appear to be empty. One person stands in between two of the tanks

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The hatchery tanks were empty in mid-October when we visited the PFBC Fish Hatchery in Linesville, PA.

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Round fish tanks with screen lids sitting in them, with rectangular fiberglass fish tanks behind them. The tanks appear to be empty.

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The hatchery tanks were empty in mid-October when we visited the PFBC Fish Hatchery in Linesville, PA.

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A few people stand near antique metal boat motors in wooden stands

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Antique boat motors at the PFBC Fish Hatchery in Linesville, PA.

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A body of water. On the left is a narrow piece of land with a large tree, a small building, and some rectangular ponds. At the bottom of the image is a wooden dock.

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Pymatuning Reservoir, Pennsylvania

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A person in a rain coat holds a medium-sized fish in their hands

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Dr. Randy Snyder teaches a section on seining. It was very windy and rainy in mid-October during this seining session. Bass caught while seining.

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A person uses a ruler to measure a narrow fish on a ceramic pan with a scale next to it

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Identifying, measuring, and weighing yellow perch and other fish.

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A person in coldwater safety gear on a boat holds the cup at the bottom of a plankton net

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Collecting zooplankton samples on Conneaut Lake, PA.

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A person with glasses looks into a porcelain pan filled with water on a table

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Dr. Howie Riessen isolates Chaoborus larvae for an experiment.

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Four people look intently at a small cup of water set on top of an upside-down bucket. There are little white specks in the cup of water.

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Watching the predatory behavior of Chaoborus larvae.

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Four people work together to pour a jug of water into a funnel over a sieve on a deck outdoors.

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Filtering Chaoborus predation study for lab analysis.

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Three people work together to pour a jug of water into a funnel over a sieve, outdoors on a porch.

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Filtering Chaoborus predation study for lab analysis.

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Three people work together to pour a jug of water into a funnel over a sieve, outdoors on a porch. Two people stand watching.

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Filtering Chaoborus predation study for lab analysis.

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Three people work together to pour a jug of water into a funnel over a sieve, outdoors on a porch. One is wearing a rain coat

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Filtering Chaoborus predation study for lab analysis. Kit Hastings (left) helps.

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