About: Distribution of the bathypelagic perch fry layer along the longitudinal profile of two large canyon-shaped reservoirs     Goto   Sponge   NotDistinct   Permalink

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Description
  • Rozmístění bathypelagické vrstvy plůdku okouna Perca fluviatilis (BPF) bylo studováno na podélném profilu nádrží Salpy a Orlík (Česká republika). Na Slapech byla vrstva BPF zaznamenána od hráze po dalších 29 km proti proudu. Vrstva BPF vymizela v horní třetině nádrže díky studené hypolimnetické vodě vypouštěné z nádrže Orlík, která je položena výše v kaskádě. Jak početnost, tak velikost BPF signifikantně rostla směrem proti proudu a sledovala trofický gradient. Na Orlíku byla vrstva BPF zaznamenána na celém podélném profilu nádrže (přes 50 km, plněn relativně teplou vodou). Jak velikost BPF, tak jejich hejnovací aktivita opět signifikantně rostla od hráze k přítoku a sledovala trofický gradient. Sdružením dat z obou nádrží se prokázalo, že tendence ke shromaždování se do husté vrstvy a mnohem později k vytváření jednotlivých hejn roste kontinuálně s velikostí BPF. (cs)
  • The distribution of the bathypelagic perch Perca fluviatilis fry (BPF) layer was studied along the longitudinal profiles of Slapy and Orlík Reservoirs (Czech Republic). In Slapy Reservoir, the BPF layer was recorded from the dam for 29 km upstream. The BPF layer vanished in the upper third of the reservoir due to the cold hypolimnetic water discharged from Orlík Reservoir situated upstream in the cascade. Both abundance and size of BPF increased significantly upstream following the trophic gradient. In Orlík Reservoir, the BPF layer was recorded along the whole longitudinal profile of the reservoir (over 50 km, filled with relatively warm water). Both the sizes of BPF and their shoaling activity again increased significantly from the dam towards the inflow following the trophic gradient. Pooling the data from both reservoirs, it was evident that the tendency to flock in a dense layer and, much later, to create distinct shoals, increased continuously with the size of BPF.
  • The distribution of the bathypelagic perch Perca fluviatilis fry (BPF) layer was studied along the longitudinal profiles of Slapy and Orlík Reservoirs (Czech Republic). In Slapy Reservoir, the BPF layer was recorded from the dam for 29 km upstream. The BPF layer vanished in the upper third of the reservoir due to the cold hypolimnetic water discharged from Orlík Reservoir situated upstream in the cascade. Both abundance and size of BPF increased significantly upstream following the trophic gradient. In Orlík Reservoir, the BPF layer was recorded along the whole longitudinal profile of the reservoir (over 50 km, filled with relatively warm water). Both the sizes of BPF and their shoaling activity again increased significantly from the dam towards the inflow following the trophic gradient. Pooling the data from both reservoirs, it was evident that the tendency to flock in a dense layer and, much later, to create distinct shoals, increased continuously with the size of BPF. (en)
Title
  • Distribution of the bathypelagic perch fry layer along the longitudinal profile of two large canyon-shaped reservoirs
  • Distribution of the bathypelagic perch fry layer along the longitudinal profile of two large canyon-shaped reservoirs (en)
  • Rozmístění bathypelagické vrstvy plůdku okouna na podélném profilu dvou velkých kaňonovitých nádrží (cs)
skos:prefLabel
  • Distribution of the bathypelagic perch fry layer along the longitudinal profile of two large canyon-shaped reservoirs
  • Distribution of the bathypelagic perch fry layer along the longitudinal profile of two large canyon-shaped reservoirs (en)
  • Rozmístění bathypelagické vrstvy plůdku okouna na podélném profilu dvou velkých kaňonovitých nádrží (cs)
skos:notation
  • RIV/60077344:_____/07:00086559!RIV08-AV0-60077344
http://linked.open.../vavai/riv/strany
  • 141;154
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1QS600170504), P(GA206/06/1371), P(IAA600170502), V, Z(AV0Z60170517)
http://linked.open...iv/cisloPeriodika
  • 1
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
  • 417645
http://linked.open...ai/riv/idVysledku
  • RIV/60077344:_____/07:00086559
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Slapy Reservoir; Orlík Reservoir; Perca fluviatilis; shoal; echosounder; Sonar5 (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [C6712DC33431]
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
  • 70
http://linked.open...iv/tvurceVysledku
  • Hejzlar, Josef
  • Kubečka, Jan
  • Čech, Martin
  • Frouzová, Jaroslava
  • Matěna, Josef
  • Draštík, Vladislav
  • Kratochvíl, Michal
http://linked.open...n/vavai/riv/zamer
issn
  • 0022-1112
number of pages
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