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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
A model of gillnet catch in relation to the catchable biomass, saturation, soak time and sampling period
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GL - Fishery
OECD FORD branch
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Project
<a href="/en/project/GAP201%2F10%2F0472" target="_blank" >GAP201/10/0472: Stochastic geometry - inhomogeneity, marking, dynamics and stereology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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