Cyprinid predation on zooplankton along the longitudinal profile of a canyon-shaped reservoir.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077387%3A_____%2F03%3A62033012" target="_blank" >RIV/60077387:_____/03:62033012 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Cyprinid predation on zooplankton along the longitudinal profile of a canyon-shaped reservoir.

Original language description

In the elongated Římov Reservoir, the diet composition of the three cyprinid species, as well as the fish and zooplankton distribution, were investigated at three sites along the longitudinal transect and during two months. The studied fish were roach (Rutilus rutilus), bream (Abramis brama) and bleak (Alburnus alburnus). Their diets along the entire longitudinal transect constituted almost exclusively crustacean zooplankton. Zooplankton density declined gradually downstream in the reservoir. A relatively higher total fish catch per unit effort was found at the upstream end and a decreasing size of Daphnia in zooplankton was observed towards upstream. Such results indicated stronger fish predation pressure in the upstream part of the reservoir during growing season. Moreover, lower diet overlaps within the cyprinid assemblage at the upstream end than within the cyprinid assemblages at the downstream locations suggested intense competition for food at the upstream end of the reservoir.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

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

Name of the periodical

Archiv für Hydrobiologie

ISSN

0003-9136

e-ISSN

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Volume of the periodical

156

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

16

Pages from-to

535-550

UT code for WoS article

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EID of the result in the Scopus database

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