Diversity and function of microbial communities in the Arctic Ocean
The Arctic Ocean ecosystem is rapidly changing in response to climate warming. The ongoing decline of its sea-ice cover has raised many questions as to the ecological consequences on biodiversity, primary productivity, and the biological carbon pump. The diversity and function of bacterial communiti...
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Universität Bremen
2018
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/1503 2023-05-15T14:41:57+02:00 Diversity and function of microbial communities in the Arctic Ocean Diversität und Funktion mikrobieller Gemeinschaften im Arktischen Ozean Rapp, Josephine Z. Boetius, Antje Bienhold, Christina Amann, Rudolf 2018-09-14 application/pdf https://media.suub.uni-bremen.de/handle/elib/1503 https://nbn-resolving.org/urn:nbn:de:gbv:46-00106760-10 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/1503 urn:nbn:de:gbv:46-00106760-10 info:eu-repo/semantics/openAccess Arctic Ocean microbial diversity microbial ecology sea ice deep sea deep-sea sediment sea-ice algae microbial eukaryotes sea-ice decline hydrolytic enzymes sediment metagenome sediment metatranscriptome Illumina sequencing 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2018 ftsubbremen 2022-11-09T07:09:36Z The Arctic Ocean ecosystem is rapidly changing in response to climate warming. The ongoing decline of its sea-ice cover has raised many questions as to the ecological consequences on biodiversity, primary productivity, and the biological carbon pump. The diversity and function of bacterial communities in the Arctic Ocean has been little explored, despite their often important role in biogeochemical cycling. One objective of this thesis was therefore to improve the current knowledge of microbial community diversity in the most understudied region of the Arctic Ocean, the deep central Eurasian basin. As sea-ice reduction is altering primary productivity and biological transport processes from the surface ocean to the deep sea, another focus of this thesis was the identification of bacterial groups associated to freshly formed, sinking and deposited particulate organic matter. Finally, the underlying genomic features that deep-sea surface sediment bacteria use for carbon turnover were analyzed, as the degradation of organic matter by heterotrophic bacteria in deep-sea sediments regulates the efficiency of CO2 removal from the atmosphere over geological time scales. Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Arktis* ice algae Sea ice Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Arctic Ocean microbial diversity microbial ecology sea ice deep sea deep-sea sediment sea-ice algae microbial eukaryotes sea-ice decline hydrolytic enzymes sediment metagenome sediment metatranscriptome Illumina sequencing 570 570 Life sciences biology ddc:570 |
spellingShingle |
Arctic Ocean microbial diversity microbial ecology sea ice deep sea deep-sea sediment sea-ice algae microbial eukaryotes sea-ice decline hydrolytic enzymes sediment metagenome sediment metatranscriptome Illumina sequencing 570 570 Life sciences biology ddc:570 Rapp, Josephine Z. Diversity and function of microbial communities in the Arctic Ocean |
topic_facet |
Arctic Ocean microbial diversity microbial ecology sea ice deep sea deep-sea sediment sea-ice algae microbial eukaryotes sea-ice decline hydrolytic enzymes sediment metagenome sediment metatranscriptome Illumina sequencing 570 570 Life sciences biology ddc:570 |
description |
The Arctic Ocean ecosystem is rapidly changing in response to climate warming. The ongoing decline of its sea-ice cover has raised many questions as to the ecological consequences on biodiversity, primary productivity, and the biological carbon pump. The diversity and function of bacterial communities in the Arctic Ocean has been little explored, despite their often important role in biogeochemical cycling. One objective of this thesis was therefore to improve the current knowledge of microbial community diversity in the most understudied region of the Arctic Ocean, the deep central Eurasian basin. As sea-ice reduction is altering primary productivity and biological transport processes from the surface ocean to the deep sea, another focus of this thesis was the identification of bacterial groups associated to freshly formed, sinking and deposited particulate organic matter. Finally, the underlying genomic features that deep-sea surface sediment bacteria use for carbon turnover were analyzed, as the degradation of organic matter by heterotrophic bacteria in deep-sea sediments regulates the efficiency of CO2 removal from the atmosphere over geological time scales. |
author2 |
Boetius, Antje Bienhold, Christina Amann, Rudolf |
format |
Doctoral or Postdoctoral Thesis |
author |
Rapp, Josephine Z. |
author_facet |
Rapp, Josephine Z. |
author_sort |
Rapp, Josephine Z. |
title |
Diversity and function of microbial communities in the Arctic Ocean |
title_short |
Diversity and function of microbial communities in the Arctic Ocean |
title_full |
Diversity and function of microbial communities in the Arctic Ocean |
title_fullStr |
Diversity and function of microbial communities in the Arctic Ocean |
title_full_unstemmed |
Diversity and function of microbial communities in the Arctic Ocean |
title_sort |
diversity and function of microbial communities in the arctic ocean |
publisher |
Universität Bremen |
publishDate |
2018 |
url |
https://media.suub.uni-bremen.de/handle/elib/1503 https://nbn-resolving.org/urn:nbn:de:gbv:46-00106760-10 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Arktis* ice algae Sea ice |
genre_facet |
Arctic Arctic Ocean Arktis* ice algae Sea ice |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/1503 urn:nbn:de:gbv:46-00106760-10 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766313645346652160 |