Kolísavost tenatových úlovků v průběhu denního cyklu a vertikální rozmístění ryb v pelagiálu evropské nádrže

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F09%3A00320834" target="_blank" >RIV/60077344:_____/09:00320834 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/09:00010348

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Diel variation in gillnet catches and vertical distribution of pelagic fishes in a stratified European reservoir

Popis výsledku v původním jazyce

Diel changes in gillnet catch rates and vertical distributions of pelagic fishes were examined in a deep, moderately eutrophic European reservoir. The investigation was carried out in late summer, when steep vertical gradients in temperature and dissolved oxygen developed in the reservoir. The total gillnet catch per unit effort was on average 3?4 times higher at twilight than during the day or at night. Decreased net visibility and increased fish activity were likely responsible for the high catches atdusk and dawn periods. The catches of individual species were not distributed uniformly across the epilimnion/metalimnion. The majority of bleak and asp were captured in the surface layer, irrespective of day, twilight or night. During the daytime, roach were most abundant in the layer just above the thermocline, but at night they occupied the upper part of the epilimnion. Perch inhabited the lower epilimnion and the upper metalimnion during the daytime and twilight.

Název v anglickém jazyce

Diel variation in gillnet catches and vertical distribution of pelagic fishes in a stratified European reservoir

Popis výsledku anglicky

Diel changes in gillnet catch rates and vertical distributions of pelagic fishes were examined in a deep, moderately eutrophic European reservoir. The investigation was carried out in late summer, when steep vertical gradients in temperature and dissolved oxygen developed in the reservoir. The total gillnet catch per unit effort was on average 3?4 times higher at twilight than during the day or at night. Decreased net visibility and increased fish activity were likely responsible for the high catches atdusk and dawn periods. The catches of individual species were not distributed uniformly across the epilimnion/metalimnion. The majority of bleak and asp were captured in the surface layer, irrespective of day, twilight or night. During the daytime, roach were most abundant in the layer just above the thermocline, but at night they occupied the upper part of the epilimnion. Perch inhabited the lower epilimnion and the upper metalimnion during the daytime and twilight.

Druh

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

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Fisheries Research

ISSN

0165-7836

e-ISSN

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Svazek periodika

96

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000263396600010

EID výsledku v databázi Scopus

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