Factors influencing the distribution of the benthic fauna of Lake Superior : establishing long term monitoring sites / Trefor B. Reynoldson. : En13-5/93-05E-PDF

"In the 1978 and 1987 Great Lakes Water Quality Agreements the governments of Canada and the United States agreed to adopt an Ecosystem Approach to the management of activities that may impact the Great Lakes ecosystem. An integral part of this approach is the development of ecosystem objectives and indicators that provide targets to define a healthy ecosystem and establish whether or not human activity within the basin is compatible with maintenance of ecosystem health. The first ecosystem objectives agreed to by the two national governments were for Lake Superior and included the lake trout and the amphipod Pontoporeia hoyi. However, until this study no investigations of the status of P. hoyi on a lakewide basis had been undertaken since 1973"--Management perspective.

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