Yields of European perch from Upper Lake Constance from 1910 to present

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:0f22424cc6826b6daf5039d189655d3d

ECKMANN, Reiner, Stefan GERSTER, A. KRAEMER, 2006. Yields of European perch from Upper Lake Constance from 1910 to present. In: Fisheries Management and Ecology. 13(6), pp. 381-390. ISSN 0969-997X. eISSN 1365-2400

@article{Eckmann2006Yield-7453, title={Yields of European perch from Upper Lake Constance from 1910 to present}, year={2006}, number={6}, volume={13}, issn={0969-997X}, journal={Fisheries Management and Ecology}, pages={381--390}, author={Eckmann, Reiner and Gerster, Stefan and Kraemer, A.} }

<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/123456789/7453"> <dc:format>application/pdf</dc:format> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/7453"/> <dcterms:bibliographicCitation>Fisheries Management and Ecology ; 13 (2006), 6. - pp. 381-390</dcterms:bibliographicCitation> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:34:33Z</dc:date> <dc:contributor>Kraemer, A.</dc:contributor> <dc:creator>Gerster, Stefan</dc:creator> <dcterms:abstract xml:lang="eng">Commercial yields of perch, Perca fluviatilis (L.), from Upper Lake Constance changed markedly during the 20th century. The perch boom in the 1950s and 1960s is attributed to higher fishing intensity and lake eutrophication. Decreasing yields in recent decades are mainly because of slower growth of perch, while a gradual decrease in year-class strength, and an overall reduction of fishing intensity, might also have contributed to yield reduction. Slower growth is mainly attributed to lake re-oligotrophication and infestation of perch with the pike tapeworm Triaenophorus nodulosus (Pallas). Competition for food with non-native ruffe, Gymnocephalus cernua(L.) is likely of minor importance, while the invasion of the lake by alien macrozoobenthos species has the potential to reduce the food supply for benthivorous perch. Perch yields are assumed to remain at the low level attained at the beginning of the 21st century; however, under changing climate conditions, fluctuations around the long-term mean will probably be wider than in the past.</dcterms:abstract> <dc:creator>Eckmann, Reiner</dc:creator> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dcterms:issued>2006</dcterms:issued> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:34:33Z</dcterms:available> <dc:contributor>Gerster, Stefan</dc:contributor> <dcterms:title>Yields of European perch from Upper Lake Constance from 1910 to present</dcterms:title> <dc:creator>Kraemer, A.</dc:creator> <dc:language>eng</dc:language> <dc:rights>deposit-license</dc:rights> <dc:contributor>Eckmann, Reiner</dc:contributor> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Eckmann_etal_FME2006.pdf 126

Das Dokument erscheint in:

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

KOPS Suche


Stöbern

Mein Benutzerkonto