Počet záznamů: 1
A model of gillnet catch in relation to the catchable biomass, saturation and soak time and sampling period
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SYSNO ASEP 0352000 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A model of gillnet catch in relation to the catchable biomass, saturation and soak time and sampling period Tvůrce(i) Prchalová, Marie (BC-A) RID, ORCID
Mrkvička, T. (CZ)
Peterka, Jiří (BC-A) RID, ORCID
Čech, Martin (BC-A) RID, ORCID
Berec, L. (CZ)
Kubečka, Jan (BC-A) RID, ORCIDZdroj.dok. Fisheries Research. - : Elsevier - ISSN 0165-7836
Roč. 107, 1-3 (2011), s. 201-209Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova catch interpretation ; catch correction ; video recording ; reservoir ; CPUE Vědní obor RIV DA - Hydrologie a limnologie CEP KJB600960810 GA AV ČR - Akademie věd CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000287113600022 DOI 10.1016/j.fishres.2010.10.021 Anotace 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. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2011
Počet záznamů: 1