About: Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses

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About: Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The winter diet of the great cormorant was studied in three sites on the River Vltava in Vyšší Brod, in Prague and at Slapy Reservoir, Czech Republic. At all three sites, roach (Rutilus rutilus), bream (Abramis brama), bleak (Alburnus alburnus), European chub (Squalius cephalus), European perch (Perca fluviatilis) and ruffe (Gymnocephalus cernuus) made up at least 74.2 % of the cormorants’ diet. A great potential for fish stock losses was identified for the River Vltava at Vyšší Brod and in Prague where the loss of fish due to overwintering great cormorants was estimated to be 22 kg ha–1 and up to 79 kg ha–1 respectively, i.e. belonging among the highest ever published figures for fish withdrawal caused by great cormorants from any inland waters (carp fishponds excluded). Most probably, both great cormorants and anglers are responsible for the decrease in catches of brown trout (Salmo trutta m. fario) and grayling (Thymallus thymallus) from the River Vltava in Vyšší Brod. The winter diet of the great cormorant was studied in three sites on the River Vltava in Vyšší Brod, in Prague and at Slapy Reservoir, Czech Republic. At all three sites, roach (Rutilus rutilus), bream (Abramis brama), bleak (Alburnus alburnus), European chub (Squalius cephalus), European perch (Perca fluviatilis) and ruffe (Gymnocephalus cernuus) made up at least 74.2 % of the cormorants’ diet. A great potential for fish stock losses was identified for the River Vltava at Vyšší Brod and in Prague where the loss of fish due to overwintering great cormorants was estimated to be 22 kg ha–1 and up to 79 kg ha–1 respectively, i.e. belonging among the highest ever published figures for fish withdrawal caused by great cormorants from any inland waters (carp fishponds excluded). Most probably, both great cormorants and anglers are responsible for the decrease in catches of brown trout (Salmo trutta m. fario) and grayling (Thymallus thymallus) from the River Vltava in Vyšší Brod. (en)
Title	Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses (en)
skos:prefLabel	Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses Winter diet of great cormorant (Phalacrocorax carbo) on the River Vltava: estimate of size and species composition and potential for fish stock losses (en)
skos:notation	RIV/60077344:_____/11:00360692!RIV12-AV0-60077344
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1QS600170504), P(GA206/06/1371), P(GP206/09/P266), Z(AV0Z60170517)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Čech, Martin Vejřík, Lukáš
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	241799
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/11:00360692
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	diagnostic bones; fish withdrawal; regurgitated pellets; European chub; European perch; grayling; roach; ruffe; Slapy Reservoir; trout spp. (en)
http://linked.open.../riv/klicoveSlovo	European chub European perch Slapy Reservoir diagnostic bones fish withdrawal grayling regurgitated pellets roach ruffe trout spp.
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[A2E7B20E9ACE]
http://linked.open...i/riv/nazevZdroje	Folia zoologica
http://linked.open...in/vavai/riv/obor	EG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Predator avoidance strategies in early life stages of percid fishes Patterns and reasons of different pelagic behaviour of perch fry: novel insight into the declared ecological plasticity of a species Limnological basis of sustainable management of reservoirs
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	60
http://linked.open...iv/tvurceVysledku	Čech, Martin Vejřík, Lukáš
http://linked.open...ain/vavai/riv/wos	000293038500006
http://linked.open...n/vavai/riv/zamer	Struktura, funkce a vývoj vodních ekosystémů
issn	0139-7893
number of pages	14 (xsd:int)

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