Fish community structure in mesotrophic and eutrophic lakes of southern Finland: the relative abundances of percids and cyprinids along a trophic gradient
Identifieur interne : 000B38 ( Main/Exploration ); précédent : 000B37; suivant : 000B39Fish community structure in mesotrophic and eutrophic lakes of southern Finland: the relative abundances of percids and cyprinids along a trophic gradient
Auteurs : M. Olin [Finlande] ; Martti Rask [Finlande] ; J. Ruuhlj Rvi [Finlande] ; M. Kurkilahti [Finlande] ; P. Ala-Opas [Finlande] ; O. Ylönen [Finlande]Source :
- Journal of Fish Biology [ 0022-1112 ] ; 2002-03.
English descriptors
Abstract
In 36 south Finnish lakes, the number of species, as well as the cyprinids:percids ratio, was dependent, not only on total phosphorus (TP), but also on lake size. Total fish biomass and cyprinid biomass increased along the TP gradient, whereas the dependence of percid biomass was less evident. Perch Perca fluviatilis and roach Rutilus rutilus strongly dominated mesotrophic lakes; in eutrophic lakes the proportion of other cyprinids and percids, such as white bream Blicca bjoerkna, bream Abramis brama, pikeperch Stizostedion lucioperca and ruffe Gymnocephalus cernuus, increased. Perch biomass was weakly related to abiotic factors but depended on roach biomass. Lake size and fish species composition are essential factors affecting fish community changes in relation to TP, and may be important as well in regulating the responses of a fish community to biomanipulation.
Url:
DOI: 10.1111/j.1095-8649.2002.tb01687.x
Affiliations:
- Finlande
- Finlande-Centrale, Päijät-Häme, Uusimaa
- Evo (Finlande), Helsinki, Jyväskylä
- Institut finlandais de recherche sur la chasse et la pêche, Station de recherche sur la chasse et la pêche d'Evo, Université d'Helsinki, Université de Jyväskylä
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000337
- to stream Istex, to step Curation: 000337
- to stream Istex, to step Checkpoint: 000732
- to stream Main, to step Merge: 000B74
- to stream Main, to step Curation: 000B38
Le document en format XML
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