Influence of water level fluctuation below dam on the structure of macroinvertebrate community

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F98%3A00003102" target="_blank" >RIV/00216224:14310/98:00003102 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of water level fluctuation below dam on the structure of macroinvertebrate community

Popis výsledku v původním jazyce

The study was aimed at investigating the influence of a reservoir on lotic macroinvertebrates by comparing the upstream conditions with two sites at different distances downstream the dam. Hydropeaking flow regime causes diurnal water level fluctuationsresulting in dewatering of part of the stream bed and long-term variability of river flow below the Brno Reservoir. Compared with the stretch above the reservoir, the number of taxa in the downstream stretch, and especially close to the dam release was significantly reduced. A decrease of density in many samples is caused by the extinciton of most insect taxa except chironomids and ceratopogonids. Slightly altered thermal regime, as well as the amelioration of peak-discharge waves by their passing through slackwater pools, is reflected in the structure of the species rich and abundant zoobenthos community 8 km downstream the dam.

Název v anglickém jazyce

Influence of water level fluctuation below dam on the structure of macroinvertebrate community

Popis výsledku anglicky

The study was aimed at investigating the influence of a reservoir on lotic macroinvertebrates by comparing the upstream conditions with two sites at different distances downstream the dam. Hydropeaking flow regime causes diurnal water level fluctuationsresulting in dewatering of part of the stream bed and long-term variability of river flow below the Brno Reservoir. Compared with the stretch above the reservoir, the number of taxa in the downstream stretch, and especially close to the dam release was significantly reduced. A decrease of density in many samples is caused by the extinciton of most insect taxa except chironomids and ceratopogonids. Slightly altered thermal regime, as well as the amelioration of peak-discharge waves by their passing through slackwater pools, is reflected in the structure of the species rich and abundant zoobenthos community 8 km downstream the dam.

Druh

C - Kapitola v odborné knize

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

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Návaznosti

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Rok uplatnění

1998

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Bretschko, G. & Helesic, J. (eds.): Advances in River Bottom Ecology.

ISBN

90 73348

Počet stran výsledku

14

Strana od-do

249

Počet stran knihy

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Název nakladatele

Backhuys Publishers

Místo vydání

Leiden, Netherland

Kód UT WoS kapitoly

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