Velikostní selektivita standardních mnohoočkových tenat při vzorkování běžných evropských druhů ryb

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F09%3A00320835" target="_blank" >RIV/60077344:_____/09:00320835 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/09:00010447

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Size selectivity of standardized multimesh gillnets in sampling coarse European species

Popis výsledku v původním jazyce

We studied gillnet selectivity by using a direct method to compare fish-size distributions from gillnet catches with a reference distribution obtained using beach seines for fry and adult fish in five Czech reservoirs. The most common pattern of difference in fish-size distributions between the two gears was that more 0+ and 1+ fish were caught by beach seines and slightly higher proportions of larger fish were observed in gillnet catches. Gillnets were unable to enmesh fish smaller than approximately 40mm in standard length. We developed average species-specific corrections that increased proportions of 0+ and 1+ fish and decreased proportions of larger fish. We also applied Kurkilahti?s correction given in European Standard EN 14 757, but it had a negligible effect on reducing the bias in size distributions. Future research is needed, otherwise interpreting results from gillnet sampling can be very misleading especially for those including data on 0+ and 1+ fish.

Název v anglickém jazyce

Size selectivity of standardized multimesh gillnets in sampling coarse European species

Popis výsledku anglicky

We studied gillnet selectivity by using a direct method to compare fish-size distributions from gillnet catches with a reference distribution obtained using beach seines for fry and adult fish in five Czech reservoirs. The most common pattern of difference in fish-size distributions between the two gears was that more 0+ and 1+ fish were caught by beach seines and slightly higher proportions of larger fish were observed in gillnet catches. Gillnets were unable to enmesh fish smaller than approximately 40mm in standard length. We developed average species-specific corrections that increased proportions of 0+ and 1+ fish and decreased proportions of larger fish. We also applied Kurkilahti?s correction given in European Standard EN 14 757, but it had a negligible effect on reducing the bias in size distributions. Future research is needed, otherwise interpreting results from gillnet sampling can be very misleading especially for those including data on 0+ and 1+ fish.

Druh

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

CEP obor

EH - Ekologie – společenstva

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

7

Strana od-do

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Kód UT WoS článku

000263396600008

EID výsledku v databázi Scopus

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