Diel distribution patterns of fishes in a temperate large lowland river
Identifieur interne : 000A23 ( Main/Exploration ); précédent : 000A22; suivant : 000A24Diel distribution patterns of fishes in a temperate large lowland river
Auteurs : Christian Wolter (biologiste) [Allemagne] ; J. Freyhof [Allemagne]Source :
- Journal of Fish Biology [ 0022-1112 ] ; 2004-03.
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Abstract
During the day, juveniles and typical inshore species in the lower Oder River, Germany, inhabited the littoral (0·05–1·50 m deep) while potamal species inhabited the mid‐channel (40–100 m from the banks). During the night, two behavioural groups were distinguished: 1) potamal species and large individuals of other species, moved from offshore to the littoral, and 2) nocturnal foraging species, became active and increased in inshore and offshore habitats. Inshore, the most significant differences at night was the increasing density of silver bream Blicca bjoerkna increasing both total biomass and total length of fishes caught. Offshore, the increasing density of whitefin gudgeon Gobio albipinnatus at night was most significant. Additional night electrofishing improved the assessment of the abundance, age and size structure of typical potamal fish species. It should be incorporated in large river fish monitoring programmes.
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DOI: 10.1111/j.1095-8649.2004.00327.x
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Box 850 119, 12 561 Berlin</wicri:regionArea><placeName><settlement type="city">Berlin</settlement><region type="land" nuts="2">Berlin</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Fish Biology</title><idno type="ISSN">0022-1112</idno><idno type="eISSN">1095-8649</idno><imprint><publisher>Blackwell Science Ltd/Inc.</publisher><pubPlace>Oxford, UK; Malden, USA</pubPlace><date type="published" when="2004-03">2004-03</date><biblScope unit="volume">64</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="632">632</biblScope><biblScope unit="page" to="642">642</biblScope></imprint><idno type="ISSN">0022-1112</idno></series><idno type="istex">4AE44D22059CB7FB61BF1CB5BA9989A970A1EB2A</idno><idno type="DOI">10.1111/j.1095-8649.2004.00327.x</idno><idno type="ArticleID">JFB327</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1112</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Blicca bjoerkna</term><term>Gobio albipinnatus</term><term>diel distribution</term><term>fish assessment</term><term>large river</term><term>lowland river</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">During the day, juveniles and typical inshore species in the lower Oder River, Germany, inhabited the littoral (0·05–1·50 m deep) while potamal species inhabited the mid‐channel (40–100 m from the banks). During the night, two behavioural groups were distinguished: 1) potamal species and large individuals of other species, moved from offshore to the littoral, and 2) nocturnal foraging species, became active and increased in inshore and offshore habitats. Inshore, the most significant differences at night was the increasing density of silver bream Blicca bjoerkna increasing both total biomass and total length of fishes caught. Offshore, the increasing density of whitefin gudgeon Gobio albipinnatus at night was most significant. Additional night electrofishing improved the assessment of the abundance, age and size structure of typical potamal fish species. It should be incorporated in large river fish monitoring programmes.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Berlin</li></region><settlement><li>Berlin</li></settlement><orgName><li>Institut Leibniz d’écologie aquatique et de la pêche en eau douce</li></orgName></list><tree><country name="Allemagne"><region name="Berlin"><name sortKey="Wolter, C" sort="Wolter, C" uniqKey="Wolter C" first="C." last="Wolter">Christian Wolter (biologiste)</name></region><name sortKey="Freyhof, J" sort="Freyhof, J" uniqKey="Freyhof J" first="J." last="Freyhof">J. Freyhof</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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