KOPS - Das Institutionelle Repositorium der Universität Konstanz

Diversität und Tiefenverteilung methanotropher Bakterien im Sediment des Bodensees

Diversität und Tiefenverteilung methanotropher Bakterien im Sediment des Bodensees


Dateien zu dieser Ressource

Prüfsumme: MD5:805656d191d8ff58492f154c87874765
Prüfsumme: MD5:503efe975e9b988be3dcad9306eda75d

PESTER, Michael, 2002. Diversität und Tiefenverteilung methanotropher Bakterien im Sediment des Bodensees

@mastersthesis{Pester2002Diver-7664, title={Diversität und Tiefenverteilung methanotropher Bakterien im Sediment des Bodensees}, year={2002}, author={Pester, Michael} }

<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/123456789/7664"> <dcterms:alternative>Diversity and depth distribution of methane oxidizing bacteria in the sediment of Lake Constance</dcterms:alternative> <dcterms:abstract xml:lang="eng">Aerob methanotrophic bacteria (MOB) play an important role in the global carbon cycle. In environments where methane is produced in large amounts, such as freshwater sediments, MOB function as a biological filter for methane, which would otherwise escape to the atmosphere. Although aerobic methane oxidation is restricted to a narrow zone at the oxic-anoxic interface, where methane and oxygen gradients overlap, previous studies by Bosse et al. (1993) had shown potential aerob methane oxidation also in the anoxic zone of littoral sediments of Lake Constance. In this study, we investigated diversity and depth distribution of MOB in the littoral sediment of Lake Constance using a clone library of pmoA genes and TRFLP fingerprinting of DNA extracts from different sediment layers. Our results showed no difference in the MOB community between the active (methane-oxidizing) upper centimeter of the sediment and an inactive layer at 10-11 cm depth. We therefore hypothesize that the even distribution of MOB is either due to eternal burial only or that MOB follow a sit-and-wait strategy. The sit-and-wait strategy is supported by the aibility of MOB to starve over longer periods of time and physical and biological events that resuspend/reoxygenate anoxic sediment layers. Interestingly, different fingerprint patterns were obtained for profundal sediments, indicating different communities of MOB in both environments. We therefore conclude that there might be a special littoral community adapted to the dynamic situation in this environment in comparison to the more stable profundal sediment.</dcterms:abstract> <dc:language>deu</dc:language> <dc:contributor>Pester, Michael</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:36:12Z</dc:date> <dcterms:title>Diversität und Tiefenverteilung methanotropher Bakterien im Sediment des Bodensees</dcterms:title> <dcterms:issued>2002</dcterms:issued> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103416863-3868037-7"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:36:12Z</dcterms:available> <dc:creator>Pester, Michael</dc:creator> <dc:format>application/pdf</dc:format> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/7664"/> <dc:rights>deposit-license</dc:rights> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Pester2.pdf 105
Pester1.pdf 96

Das Dokument erscheint in:

KOPS Suche


Mein Benutzerkonto