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Mathematical model for the ecosystem response of Lake Ladoga to phosphorus loading



Mathematical model for the ecosystem response of Lake Ladoga to phosphorus loading



Hydrobiologia 322(1-3): 153-157



The ecosystem response model described in this paper combines an ecosystem model and a three-dimensional circulation model of Lake Ladoga developed earlier by the authors. The ecosystem model describes the process of Lake Ladoga eutrophication, and its biological submodel describes changes in the phyto- and zooplankton. In the earlier model version, lake circulation was determined using a two-dimensional hydrodynamical model which was not completely adequate. The present model allows calculation of the distributions of phyto- and zooplankton and mineral phosphorus and nitrogen. One of its main advantages is that reliable computations of the ecosystem dynamics over an extended period of time are possible. The response of the ecosystem to different levels of phosphorus pollution loading and to weather conditions is studied.

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Accession: 002891403

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DOI: 10.1007/bf00031821


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