Movement of fish between a river and its backwater: diel activity and relation to environmental gradient.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077387%3A_____%2F03%3A62033031" target="_blank" >RIV/60077387:_____/03:62033031 - 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

Movement of fish between a river and its backwater: diel activity and relation to environmental gradient.

Original language description

Movements of fish, in particular roach R. rutilus, perch P. fluviatilis, rudd S. erythrophthalmus, bleak A. alburnus and chub L. cephalus in relation to environmental variables were examined between the River Morava, Czech Republic, and a rehabilitated former meander. Data were taken over seven 24-h periods in April-June 1997 using two back-to-back traps. Of 170 fish captured, 70% moved from the backwater to the river. Diel activity differed between sampling dates, but overall bleak, roach and chub moved mainly between dusk and dawn, whereas perch moved throughout most of the day. Rudd showed bi-modal (mid-day, midnight) activity. However, avoidance behaviour could have biased results for species known to be wary of traps. Water level changes, temperature and illumination were among the main environmental factors influencing fish movement, along with spawning migrations relevant for most species. In all specimens, over 65% individuals captured were ready to spawn.

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

Ecology of Freshwater Fish

ISSN

0906-6691

e-ISSN

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Volume of the periodical

12

Issue of the periodical within the volume

2

Country of publishing house

DK - DENMARK

Number of pages

11

Pages from-to

107-117

UT code for WoS article

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EID of the result in the Scopus database

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