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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F11%3A43882132" target="_blank" >RIV/60076658:12310/11:43882132 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.fishres.2010.10.021" target="_blank" >http://dx.doi.org/10.1016/j.fishres.2010.10.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fishres.2010.10.021" target="_blank" >10.1016/j.fishres.2010.10.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A model of gillnet catch in relation to the catchable biomass, saturation, 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. The corrected gillnet catch, termed the catchable biomass rate in the text, is the weight of fish that can be caught within an hour by an empty gillnet during a period of unitary fish activity. 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. The maximal capacity of a standardized benthic gillnet (45 m(2) area, 12 mesh sizes that range from 5 to 55 mm) was assessed to be 11 kg, i.e., 245 kg 1000 m(-2) of gillnet. Sampling time had only a negligible effect on the gillnet catch. We recommend using the catch

Název v anglickém jazyce

A model of gillnet catch in relation to the catchable biomass, saturation, 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. The corrected gillnet catch, termed the catchable biomass rate in the text, is the weight of fish that can be caught within an hour by an empty gillnet during a period of unitary fish activity. 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. The maximal capacity of a standardized benthic gillnet (45 m(2) area, 12 mesh sizes that range from 5 to 55 mm) was assessed to be 11 kg, i.e., 245 kg 1000 m(-2) of gillnet. Sampling time had only a negligible effect on the gillnet catch. We recommend using the catch

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/GAP201%2F10%2F0472" target="_blank" >GAP201/10/0472: Stochastická geometrie - nehomogenita, kótování, dynamika a stereologie</a><br>

Návaznosti

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

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

201-209

Kód UT WoS článku

000287113600022

EID výsledku v databázi Scopus

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