A model of gillnet catch in relation to the catchable biomass, saturation and soak time and sampling period

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00352000" target="_blank" >RIV/60077344:_____/11:00352000 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

A model of gillnet catch in relation to the catchable biomass, saturation and soak time and sampling period

Popis výsledku v původním jazyce

We developed a new approach for evaluating gillnet catches. A model of a gillnet catch was built to differentiate the effects of gillnet saturation, fish activity and fish escapement from the gillnet catch. We also observed the effects of soak time (2, 5, 8, 11 and 13 h) and sampling period (August vs. September) on the catch. Our results show that saturation and fish escapement from gillnets are important events occurring during each use, thus violating the assumption of a linear relationship between gillnet catch and fish density. We created a conversion table and a slide rule, from which the catchable biomass rates can be determined. We also developed a method for the conversion of catches based on different soak times. Our findings help to better understand the processes underlying gillnet catches and improve the interpretability and reliability of this method in comparing different gears used and assessing fish communities in general.

Název v anglickém jazyce

A model of gillnet catch in relation to the catchable biomass, saturation and soak time and sampling period

Popis výsledku anglicky

We developed a new approach for evaluating gillnet catches. A model of a gillnet catch was built to differentiate the effects of gillnet saturation, fish activity and fish escapement from the gillnet catch. We also observed the effects of soak time (2, 5, 8, 11 and 13 h) and sampling period (August vs. September) on the catch. Our results show that saturation and fish escapement from gillnets are important events occurring during each use, thus violating the assumption of a linear relationship between gillnet catch and fish density. We created a conversion table and a slide rule, from which the catchable biomass rates can be determined. We also developed a method for the conversion of catches based on different soak times. Our findings help to better understand the processes underlying gillnet catches and improve the interpretability and reliability of this method in comparing different gears used and assessing fish communities in general.

Druh

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

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

—

Projekt

<a href="/cs/project/KJB600960810" target="_blank" >KJB600960810: Vliv kvantity a kvality potravy na změnu kompetiční úspěšnosti mezi 0+ okounem a ploticí</a><br>

Návaznosti

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

Rok uplatnění

2011

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

—

Svazek periodika

107

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000287113600022

EID výsledku v databázi Scopus

—