<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The aim of the study was to identify changes in the quality and quantity structure of the zoobenthos assemblages inhabiting the lakes, channels, and basins that comprise the cooling system of a power plant in central Poland. By comparing the invertebrate fauna occurring on the freshwater clam <italic>Sinanodonta woodiana</italic> (Lea) and the macrophyte <italic>Vallisneria spiralis</italic> (L.), the significance of exotic species in the development of invertebrate macrofauna species was demonstrated. The zoobenthos inhabiting the channels was poorer quantitatively and qualitatively than was the lake zoobenthos. Factors that determined this included thermal and oxygen conditions and water flow. Elements that enriched the development of the zoobenthos and the zooperyphyton included populations of alien zebra mussel <italic>Dreissena polymorpha</italic> Pallas and <italic>S. woodiana</italic>, and assemblages of <italic>Myriophyllum spicatum</italic> L. and <italic>Ceratophylum demersum</italic> L. In comparison to thirty years ago, the quality of the bottom fauna in the system has decreased.</p></abstract>

The aim of the study was to identify changes in the quality and quantity structure of the zoobenthos assemblages inhabiting the lakes, channels, and basins that comprise the cooling system of a power plant in central Poland. By comparing the invertebrate fauna occurring on the freshwater clam Sinanodonta woodiana (Lea) and the macrophyte Vallisneria spiralis (L.), the significance of exotic species in the development of invertebrate macrofauna species was demonstrated. The zoobenthos inhabiting the channels was poorer quantitatively and qualitatively than was the lake zoobenthos. Factors that determined this included thermal and oxygen conditions and water flow. Elements that enriched the development of the zoobenthos and the zooperyphyton included populations of alien zebra mussel Dreissena polymorpha Pallas and S. woodiana, and assemblages of Myriophyllum spicatum L. and Ceratophylum demersum L. In comparison to thirty years ago, the quality of the bottom fauna in the system has decreased.

Changes in the zoobenthos structure in a system of heated lakes in central Poland

Department of Hydrobiology, The Stanisław Sakowicz Inland Fisheries Institute, Olsztyn ul. Oczapowskiego 10, 10-718 Olsztyn, Poland

Fisheries & Aquatic Life

The aim of the study was to identify changes in the quality and quantity structure of the zoobenthos assemblages inhabiting the lakes, channels, and basins...

Changes in the zoobenthos structure in a system of heated lakes in central Poland

Pubblicato online: 11 feb 2010

Pagine: 221 - 238

DOI: https://doi.org/10.2478/v10086-009-0016-x

Parole chiave
heated lake, channels, zoobenthos, chironomids, substrate preferences

This content is open access.

Changes in the zoobenthos structure in a system of heated lakes in central Poland

Pubblicato online: 11 feb 2010

Pagine: 221 - 238

DOI: https://doi.org/10.2478/v10086-009-0016-x

Parole chiaveheated lake, channels, zoobenthos, chironomids, substrate preferences

This content is open access.

Parole chiave
heated lake, channels, zoobenthos, chironomids, substrate preferences