KOPS - Das Institutionelle Repositorium der Universität Konstanz

Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types

Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:6353ab010bd47beadc8dab12fe796e5f

DIETERICH, Axel, Daniel BAUMGÄRTNER, Reiner ECKMANN, 2004. Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types. In: Ecology of Freshwater Fish. 13(4), pp. 236-244. ISSN 0906-6691. eISSN 1600-0633

@article{Dieterich2004Compe-8293, title={Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types}, year={2004}, number={4}, volume={13}, issn={0906-6691}, journal={Ecology of Freshwater Fish}, pages={236--244}, author={Dieterich, Axel and Baumgärtner, Daniel and Eckmann, Reiner} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/8293"> <dcterms:abstract xml:lang="eng">Food consumption by Eurasian perch (Perca fluviatilis L.) and ruffe(Gymnocephalus cernuus [L.]) was studied in single and mixed species treatments in the laboratory, where alternative food resources, chironomids and zooplankton, were offered simultaneously. The effects of structural complexity, which was represented by substrate grain size, and of feeding level on food consumption were analysed. Across all experiments, the outcome of competition between perch and ruffe depended on food abundance and on the structural complexity of the environment. Perch and ruffe both changed their food consumption in the presence of a heterospecific competitor. With high food supply, perch consumed more benthic food than ruffe. With low food supply, the consumption of perch decreased strongly, while that of ruffe remained high on fine sediment. Under all conditions tested, the mechanism of competition appeared to be of interference rather than of exploitative nature. It is suggested that with decreasing lake productivity caused by re-oligotrophication, habitat shifts of both species will occur, which will alleviate interspecific competition. Ruffe will forage over fine sediment and perch over coarse sediment, whereby both species will achieve the highest foraging efficiency under conditions of low food supply.</dcterms:abstract> <dc:creator>Dieterich, Axel</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:42:27Z</dcterms:available> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8293"/> <dc:creator>Eckmann, Reiner</dc:creator> <dc:format>application/pdf</dc:format> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:42:27Z</dc:date> <dcterms:title>Competition for food between Eurasian perch(Perca fluviatilis L.) and ruffe(Gymnocephaluscernuus [L.]) over different substrate types</dcterms:title> <dc:contributor>Dieterich, Axel</dc:contributor> <dcterms:bibliographicCitation>First publ. in: Ecology of Freshwater Fish 13 (2004), 4, pp. 236 244</dcterms:bibliographicCitation> <dc:contributor>Baumgärtner, Daniel</dc:contributor> <dc:contributor>Eckmann, Reiner</dc:contributor> <dc:creator>Baumgärtner, Daniel</dc:creator> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dcterms:issued>2004</dcterms:issued> <dc:language>eng</dc:language> <dc:rights>deposit-license</dc:rights> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Competition_for_food_between_Eurasian_perch.pdf 112

Das Dokument erscheint in:

deposit-license Solange nicht anders angezeigt, wird die Lizenz wie folgt beschrieben: deposit-license

KOPS Suche


Stöbern

Mein Benutzerkonto