Brown trout migration and flow variability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F04%3A00000577" target="_blank" >RIV/00020711:_____/04:00000577 - isvavai.cz</a>

Alternative codes found

RIV/00027014:_____/04:#0000632 RIV/00020711:_____/04:00000407

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Brown trout migration and flow variability

Original language description

To verify the assumption that flow and its variance differently affect both spawning and non-spawning migrations of brown trout, its occurrence in the fish ladder was observed from April 1997 to March 1998. The ladder was situated at the Ohře River (Central Europe), and studied stretch had channelized riverbed without backwaters and regulated discharge regime. For spawning migrations brown trout preferred low and stable flows. In contrast, high variance in flow appeared to be attended by occurrence of nonspawners in the ladder. The highest number of brown trout was represented by nonspawners, and occurred in winter, whilst the number of brown trout during the period of spawning migrations in autumn was significantly lower. High flow variability, low water temperatures (2 - 3°C) and insufficient availability of winter concealments induced migrations of brown trout during winter.

Czech name

Brown trout migration and flow variability

Czech description

To verify the assumption that flow and its variance differently affect both spawning and non-spawning migrations of brown trout, its occurrence in the fish ladder was observed from April 1997 to March 1998. The ladder was situated at the Ohře River (Central Europe), and studied stretch had channelized riverbed without backwaters and regulated discharge regime. For spawning migrations brown trout preferred low and stable flows. In contrast, high variance in flow appeared to be attended by occurrence of nonspawners in the ladder. The highest number of brown trout was represented by nonspawners, and occurred in winter, whilst the number of brown trout during the period of spawning migrations in autumn was significantly lower. High flow variability, low water temperatures (2 - 3°C) and insufficient availability of winter concealments induced migrations of brown trout during winter.

Type

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

CEP classification

GL - Fishery

OECD FORD branch

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Project

<a href="/en/project/SA%2F650%2F5%2F03" target="_blank" >SA/650/5/03: Project Elbe IV</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2004

Confidentiality

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

Name of the periodical

Ecohydrology and hydrobiology

ISSN

1642-3593

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

2

Country of publishing house

PL - POLAND

Number of pages

7

Pages from-to

157-163

UT code for WoS article

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EID of the result in the Scopus database

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