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Description
  • Chování 0+ okounů, coby dominantního druhu pelagického plůdkového společenstva Slapské přehrady (Česká Republika), bylo sudováno na konci května a v půli června 2002 pomocí akustiky a doplňkových síťových odlovů. Během dne byl plůdek okouna přítomen simultánně v litorálu, epipelagiálu i bathypelagiálu nádrže. Batypelagický plůdek okouna vytvářející odrazovou vrstvu vykonával rozsáhlé denní vertikální migrace mezi epilimniem a hypolimniem. Za soumraku se migrující batypelagický plůdek okouna mísil v epilimniu s nemigrujícím plůdkem epipelagickým a trávil noc v blízkosti skočné vrstvy. V červnu bylo pozorováno také hejnové chování části batypelagického půdku. Hejnující plůdek bathypelagického okouna zůstával blíže hladině něž solitérní jedinci. Jak hloubka bathypelagické vrstvy tak hloubka hejn okouního plůdku byla řízena intenzitou slunečního záření. (cs)
  • The behaviour of young-of-the-year perch as a dominating species of the pelagic fry assemblage of the Slapy Reservoir (Czech Republic) was studied during late May and mid June 2002 using acoustic and complementing net catches. During the day the perch fry was present simultaneously in littoral, epipelagic and bathypelagic habitats. Bathypelagic perch fry forming a scattering layer performed extensive diel vertical migrations between the epilimnion and hypolimnion. At the dusk migrating bathypelagic perch fry mixed in epilimnion with non-migrating epipelagic perch fry and spent the night close to the thermocline. In June, shoaling behaviour of a certain part of bathypelagic perch fry was also observed. Shoaling perch fry remained shallower in the water column than non-shoaling bathypelagic perch fry. Both depth of scattering layer and depth of shoals were strongly controlled by the light intensity.
  • The behaviour of young-of-the-year perch as a dominating species of the pelagic fry assemblage of the Slapy Reservoir (Czech Republic) was studied during late May and mid June 2002 using acoustic and complementing net catches. During the day the perch fry was present simultaneously in littoral, epipelagic and bathypelagic habitats. Bathypelagic perch fry forming a scattering layer performed extensive diel vertical migrations between the epilimnion and hypolimnion. At the dusk migrating bathypelagic perch fry mixed in epilimnion with non-migrating epipelagic perch fry and spent the night close to the thermocline. In June, shoaling behaviour of a certain part of bathypelagic perch fry was also observed. Shoaling perch fry remained shallower in the water column than non-shoaling bathypelagic perch fry. Both depth of scattering layer and depth of shoals were strongly controlled by the light intensity. (en)
Title
  • Diel vertical migrations of bathypelagic perch fry
  • Diel vertical migrations of bathypelagic perch fry (en)
  • Denní vertikální migrace batypelagického plůdku okouna (cs)
skos:prefLabel
  • Diel vertical migrations of bathypelagic perch fry
  • Diel vertical migrations of bathypelagic perch fry (en)
  • Denní vertikální migrace batypelagického plůdku okouna (cs)
skos:notation
  • RIV/60077387:_____/05:00000184!RIV/2005/AV0/A62005/N
http://linked.open.../vavai/riv/strany
  • 685;702
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA6017201), P(IAA6017901), P(KSK6005114), Z(AV0Z60170517)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 518023
http://linked.open...ai/riv/idVysledku
  • RIV/60077387:_____/05:00000184
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Slapy Reservoir; fry distribution; echosounder (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [FCC57F78CF95]
http://linked.open...i/riv/nazevZdroje
  • Journal of Fish Biology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 66
http://linked.open...iv/tvurceVysledku
  • Kubečka, Jan
  • Čech, Martin
  • Matěna, Josef
  • Draštík, Vladislav
  • Kratochvíl, Michal
http://linked.open...n/vavai/riv/zamer
issn
  • 0022-1112
number of pages
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