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Hydrobiological Journal
SJR: 0.227 SNIP: 0.575 CiteScore™: 0.24

ISSN Печать: 0018-8166
ISSN Онлайн: 1943-5991

Выпуски:
Том 55, 2019 Том 54, 2018 Том 53, 2017 Том 52, 2016 Том 51, 2015 Том 50, 2014 Том 49, 2013 Том 48, 2012 Том 47, 2011 Том 46, 2010 Том 45, 2009 Том 44, 2008 Том 43, 2007 Том 42, 2006 Том 41, 2005 Том 40, 2004 Том 39, 2003 Том 38, 2002 Том 37, 2001 Том 36, 2000 Том 35, 1999 Том 34, 1998

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v37.i1.10
12 pages

A Simple Model of a Lake Ecosystem for the Study of Relationships between its Components

A. F. Alimov
Zoological Institute Russian Academy of Sciences St.-Petersburg, Russia
A. A. Umnov
Institute of Zoology Russian Academy of Sciences St. Petersburg, Russia

Краткое описание

A simple model of a lake ecosystem consisting of autotrophic and heterotrophic organisms, and also of organic matter both suspended in water and accumulated in bottom sediments, has been studied. The processes of production and decomposition of organic matter were simulated by using the general equations governing the main relationships in the ecosystem. It has been found that the capacity of the ecosystem for stabilization at the expense of the intra-ecosystem relationships is its main characteristics Production of the communities of heterotrophic organisms incorporated into the ecosystem may depend to a large extent on the structure of ration of animals. Production, P/B coefficients, and the efficiency of functioning of the ecosystem belong to its main characteristics. The values of Р/B coefficients and the efficiency of functioning of the ecosystem are higher than those of the populations and communities of hydrobionts. Simplification in the structure of an ecosystem is accompanied by the increase in values of P/B coefficients and the efficiency of its functioning.


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