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Contemporary Problems of Ecology

2017 year, number 2

Effect of Geographical Factors on Biological Productivity of Lake Ecosystems: Modelling and Forecast

Zoological Institute, RAS, 199034, St. Petersburg, Universitetskaya emb., 1
Keywords: факторы среды, первичная продукция наземных и водных экосистем, моделирование потоков вещества и энергии, environmental factors, primary production of terrestrial and aquatic ecosystems, modeling of substance and energy streams


Based on the example of Krivoye Lake (North Karelia) dependence of productivity of lake ecosystems on geographical, climatic conditions, and drainage terrestrial production is described in the form of dynamic mass-balance model. A model algorithm is presented. It has been concluded that at natural interannual fluctuations of nutrient loads and owing to absence of anthropogenic influence Krivoye Lake has been keeping the status of oligotrophic waterbody over more than 40 years.