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Effects of changed thermal regime on chironomid community in a dammed river (A preliminary study)

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BRABEC Karel

Rok publikování 2000
Druh Článek ve sborníku
Konference Odwin Hoffrichter (ed.): Late 20thCentury Research on Chironomidae: An Anthology from the 13th International Symposium on Chironomidae
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Ekologie - společenstva
Klíčová slova dammed river; thermal regime; chironomids
Popis Some preliminary results are presented on the effects two hydropeaking reservoirs in the Czech Republic exert on the downstream riverine community of chironomid larvae. Density and species richness decrease below both studied dams. Directly below the Vír Reservoir, there is an increase in relative abundance of Orthocladiinae, and further downstream the river is dominated by Tanytarsini. Seventeen kilometers downstream from the dam, the abundance shares of individual subfamilies and tribes are almost identical again with the situation upstream from the dam. Further changes downstream occurred as increased shares of the tribe Chironomini. The shallower Brno Reservoir does not cause such a large decrease in the number of taxa although increases of Orthocladiinae were similar.
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