Brown trout migration and flow variability

Kód výsledku v 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>

Nalezeny alternativní kódy

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

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Brown trout migration and flow variability

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Brown trout migration and flow variability

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GL - Rybářství

OECD FORD obor

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Projekt

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

Návaznosti

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

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Ecohydrology and hydrobiology

ISSN

1642-3593

e-ISSN

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Svazek periodika

4

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

157-163

Kód UT WoS článku

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EID výsledku v databázi Scopus

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