Fishery Management


Biomanipulation is a restoration and management technique used to modify the food web. Typically, biomanipulation of a fishery is conducted in order to assert a “top-down” biological control of trophic processes. In a balanced lake or pond ecosystem, a large proportion of the phytoplankton are eaten by large-bodied zooplankton, micro-animals that live in open water. By modifying the composition of the fish community, it is possible to decrease fish predation on large-bodied zooplankton and, consequently, reduce the amount of algae.

We maintain a full array of sampling equipment, including electrofishing gear that enables us to study the fish community of lake, pond, river and stream ecosystems. Our scientists are especially skilled in the statistical analysis of such data and the use of the data to develop stocking programs to improve recreational fishing or modify the ecological balance of the fish community of lake, reservoir and pond systems. We also provide guidance regarding the improvement of fish habitat to increase spawning and/or forage success or enhance the recreational fishing experience. 

Read about the biomanipulation restoration program that we designed and implemented at Culver Lake, a 550 acre, 65-foot deep lake located in Sussex County, NJ.

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