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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00360692" target="_blank" >RIV/60077344:_____/11:00360692 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language 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), Europeanchub (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 wherethe 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 (carpfishponds 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Folia zoologica

ISSN

0139-7893

e-ISSN

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Volume of the periodical

60

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

"129?142"

UT code for WoS article

000293038500006

EID of the result in the Scopus database

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