Publikation: Seasonal changes of the quantitative importance of protozoans in a large lake : an ecosystem approach using mass-balanced carbon flow diagrams
Dateien
Datum
Autor:innen
Herausgeber:innen
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
Internationale Patentnummer
Link zur Lizenz
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Titel in einer weiteren Sprache
Publikationstyp
Publikationsstatus
Erschienen in
Zusammenfassung
Based on comprehensive measurements of plankton abundance and production, quantitative carbon flow diagrams were established for the pelagic community of a large lake (L. Constance) for ten successive time intervals during the seasonal course of 1987. Using reasonable diet compositions and parameters (e.g. trophic transfer efficiencies in the range of l0-35%), mass-balance conditions could be fulfilled for individual compartments and the entire food web, provided that ciliate growth rates used during summer and autumn were far below the maximum rates observed in the laboratory. Ciliates, rotifers, and most crusta- ceans were predominantty herbivorous in our model. Ciliates played an important role in the overall carbon flow especially during the fmt half of the year. They constituted a substantial portion of the overall grazing pressure on phytoplankton (up to 89%, seasonal average 45%). They also formed an important part of the diet of cyclopoid copepods in spring. Thus, ciliates which are generally assigned to the microbial food web, were strongly involved in flow dynamics commonly attributed to the classical food chain. Osmotrophic bacteria derived most of their organic matter from zooplankton mediated EOC (excreted organic carbon) flows. The fraction originating directly from phytoplankton was less important. On a seasonal average, microbial production appeared to be of minor importance to the nutrition of larger plankton (i.e. ciliates, rotifers, crustaceans) although a tight coupling between heterotrophic unicellular and multicellular organisms was assumed. Low microbial food web efficiencies indicated that a large amount of organic carbon was respired within the microbial food web which, in turn, points to a considerable recycling of nutrients. Our model supported the hypothesis that nutrient recycling is the primary function of bacterivorous flagellates in the plankton food web of Lake Constance.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
Schlagwörter
Konferenz
Rezension
Zitieren
ISO 690
GAEDKE, Ursula, Dietmar STRAILE, 1994. Seasonal changes of the quantitative importance of protozoans in a large lake : an ecosystem approach using mass-balanced carbon flow diagrams. In: Marine Microbial Food Webs. 1994, 8(1/2), pp. 163-188BibTex
@article{Gaedke1994Seaso-6887, year={1994}, title={Seasonal changes of the quantitative importance of protozoans in a large lake : an ecosystem approach using mass-balanced carbon flow diagrams}, number={1/2}, volume={8}, journal={Marine Microbial Food Webs}, pages={163--188}, author={Gaedke, Ursula and Straile, Dietmar} }
RDF
<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/6887"> <dc:creator>Straile, Dietmar</dc:creator> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:language>eng</dc:language> <dc:creator>Gaedke, Ursula</dc:creator> <foaf:homepage rdf:resource="http://localhost:8080/"/> <dc:format>application/pdf</dc:format> <dcterms:bibliographicCitation>First publ. in : Marine Microbial Food Webs, 8 (1994), 1/2, pp. 163-188</dcterms:bibliographicCitation> <dcterms:issued>1994</dcterms:issued> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/> <dc:contributor>Gaedke, Ursula</dc:contributor> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/6887/1/Gaedke_Straile94b.pdf"/> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/6887/1/Gaedke_Straile94b.pdf"/> <dcterms:title>Seasonal changes of the quantitative importance of protozoans in a large lake : an ecosystem approach using mass-balanced carbon flow diagrams</dcterms:title> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/> <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights> <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:29:56Z</dc:date> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/6887"/> <dcterms:abstract xml:lang="eng">Based on comprehensive measurements of plankton abundance and production, quantitative carbon flow diagrams were established for the pelagic community of a large lake (L. Constance) for ten successive time intervals during the seasonal course of 1987. Using reasonable diet compositions and parameters (e.g. trophic transfer efficiencies in the range of l0-35%), mass-balance conditions could be fulfilled for individual compartments and the entire food web, provided that ciliate growth rates used during summer and autumn were far below the maximum rates observed in the laboratory. Ciliates, rotifers, and most crusta- ceans were predominantty herbivorous in our model. Ciliates played an important role in the overall carbon flow especially during the fmt half of the year. They constituted a substantial portion of the overall grazing pressure on phytoplankton (up to 89%, seasonal average 45%). They also formed an important part of the diet of cyclopoid copepods in spring. Thus, ciliates which are generally assigned to the microbial food web, were strongly involved in flow dynamics commonly attributed to the classical food chain. Osmotrophic bacteria derived most of their organic matter from zooplankton mediated EOC (excreted organic carbon) flows. The fraction originating directly from phytoplankton was less important. On a seasonal average, microbial production appeared to be of minor importance to the nutrition of larger plankton (i.e. ciliates, rotifers, crustaceans) although a tight coupling between heterotrophic unicellular and multicellular organisms was assumed. Low microbial food web efficiencies indicated that a large amount of organic carbon was respired within the microbial food web which, in turn, points to a considerable recycling of nutrients. Our model supported the hypothesis that nutrient recycling is the primary function of bacterivorous flagellates in the plankton food web of Lake Constance.</dcterms:abstract> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:29:56Z</dcterms:available> <dc:contributor>Straile, Dietmar</dc:contributor> </rdf:Description> </rdf:RDF>