About: Sinusoidal cycling swimming pattern of reservoir fishes.

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About: Sinusoidal cycling swimming pattern of reservoir fishes. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A circular transducer fixed on the bottom close to the deepest point of the Rimov Reservoir and beaming up towards the surface showed that most fishes stayed in the epilimnion during the summer. The majority of larger fish in open water performed characteristic sinusoidal movements in the vertical plane during July and August days. As they crossed the sonar beam, the fish changed their depth several times. Fish started to swim up-and-down after sunrise and continued doing so during daytime. The sinusoidal movement pattern was replaced by direct movement before sunset. Variation of target strength indicates active changes of fish tilt in transient phases of the sinusoidal cycle rather than changes of swim bladder volume. Up-and-down fish swimming is likely to be an efficient way of visual inspecting a larger volume of the epilimnion for prey - large zooplankton, whose epilimnetic density in the reservoir is low and patchy in summer time. A circular transducer fixed on the bottom close to the deepest point of the Rimov Reservoir and beaming up towards the surface showed that most fishes stayed in the epilimnion during the summer. The majority of larger fish in open water performed characteristic sinusoidal movements in the vertical plane during July and August days. As they crossed the sonar beam, the fish changed their depth several times. Fish started to swim up-and-down after sunrise and continued doing so during daytime. The sinusoidal movement pattern was replaced by direct movement before sunset. Variation of target strength indicates active changes of fish tilt in transient phases of the sinusoidal cycle rather than changes of swim bladder volume. Up-and-down fish swimming is likely to be an efficient way of visual inspecting a larger volume of the epilimnion for prey - large zooplankton, whose epilimnetic density in the reservoir is low and patchy in summer time. (en)
Title	Sinusoidal cycling swimming pattern of reservoir fishes. Sinusoidal cycling swimming pattern of reservoir fishes. (en)
skos:prefLabel	Sinusoidal cycling swimming pattern of reservoir fishes. Sinusoidal cycling swimming pattern of reservoir fishes. (en)
skos:notation	RIV/60077387:_____/02:62023112!RIV/2003/GA0/A62003/N
http://linked.open.../vavai/riv/strany	456;471
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/02/0520), P(IAA6017201), P(IAA6017901), Z(AV0Z6017912)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Kubečka, Jan Čech, Martin
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	Hydrobiologický ústav AV ČR
http://linked.open...dnocenehoVysledku	663686
http://linked.open...ai/riv/idVysledku	RIV/60077387:_____/02:62023112
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sinusoidal swimming; echosounder; reservoir (en)
http://linked.open.../riv/klicoveSlovo	reservoir echosounder sinusoidal swimming
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[A5FA5883B61C]
http://linked.open...i/riv/nazevZdroje	Journal of Fish Biology
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Tributary zone as a key factor for fish stock development in reservoirs Pelagic niche of riverine fish in Czech reservoirs Acoustic methods for assessment of biotic and abiotic parameters of water environment
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	61
http://linked.open...iv/tvurceVysledku	Kubečka, Jan Čech, Martin
http://linked.open...n/vavai/riv/zamer	Biotické interakce v pelagické zóně lenitických ekosystémů, údolních nádrží a jezer různé trofie v podmínkách výrazného snížení emisí v postkomunistické Evropě
issn	0022-1112
number of pages	16 (xsd:int)

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