About: The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages

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About: The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The efficiency of different sized and coloured trawls were investigated in surface stratum of the Římov Reservoir during two surveys in spring 2007. No significant differences in efficiency and body lengths of the fry were found for any taxa when black and white trawls were compared. Comparison of the efficiencies of different sized trawls revealed different patterns for the dominant perch and cyprinids during both day and night. For perch, the lowest efficiency was observed for the smallest trawl, whereas the greatest efficiency was observed for the largest trawl. The efficiencies were significantly different between trawls during day and night only for perch. For cyprinids, the efficiencies of different sized trawls were insignificantly different during both day and night. Our results indicate that for sampling perch fry during both day and night, trawl with a 1 m2 mouth is not sufficiently efficient and the density of perch fry is significantly under estimated with such small net. The efficiency of different sized and coloured trawls were investigated in surface stratum of the Římov Reservoir during two surveys in spring 2007. No significant differences in efficiency and body lengths of the fry were found for any taxa when black and white trawls were compared. Comparison of the efficiencies of different sized trawls revealed different patterns for the dominant perch and cyprinids during both day and night. For perch, the lowest efficiency was observed for the smallest trawl, whereas the greatest efficiency was observed for the largest trawl. The efficiencies were significantly different between trawls during day and night only for perch. For cyprinids, the efficiencies of different sized trawls were insignificantly different during both day and night. Our results indicate that for sampling perch fry during both day and night, trawl with a 1 m2 mouth is not sufficiently efficient and the density of perch fry is significantly under estimated with such small net. (en)
Title	The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages (en)
skos:prefLabel	The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages (en)
skos:notation	RIV/60077344:_____/10:00349531!RIV11-GA0-60077344
http://linked.open...avai/riv/aktivita	I P V Z
http://linked.open...avai/riv/aktivity	I, P(1QS600170504), P(GP206/09/P266), V, Z(AV0Z60170517)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kubečka, Jan Matěna, Josef Peterka, Jiří Čech, Martin Vašek, Mojmír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biologické centrum AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	263850
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/10:00349531
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	trawl efficiency; fry density; perch (en)
http://linked.open.../riv/klicoveSlovo	perch fry density trawl efficiency
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[71B98BE41FB0]
http://linked.open...i/riv/nazevZdroje	Fisheries Research
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Predator avoidance strategies in early life stages of percid fishes Limnological basis of sustainable management of reservoirs
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	105
http://linked.open...iv/tvurceVysledku	Kubečka, Jan Peterka, Jiří Čech, Martin Matěna, Josef Vašek, Mojmír Jůza, T.
http://linked.open...ain/vavai/riv/wos	000281181500001
http://linked.open...n/vavai/riv/zamer	Struktura, funkce a vývoj vodních ekosystémů
issn	0165-7836
number of pages	9 (xsd:int)
is http://linked.open...avai/riv/vysledek of	The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages

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