Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions
The Arctic Ocean is substantially affected by ongoing warming and sea ice loss. Climatic change further influences biological processes. Altogether, this can result in a modification of the marine carbon cycle, alike important for the climate and the ecosystem of the Arctic Ocean and beyond. In orde...
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Universität Bremen
2023
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/7414 2023-12-10T09:44:25+01:00 Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions Tell, Franziska Kucera, Michal Morley, Audrey 2023-04-17 application/pdf https://media.suub.uni-bremen.de/handle/elib/7414 https://doi.org/10.26092/elib/2638 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib74144 eng eng Universität Bremen Fachbereich 05: Geowissenschaften (FB 05) https://media.suub.uni-bremen.de/handle/elib/7414 https://doi.org/10.26092/elib/2638 doi:10.26092/elib/2638 urn:nbn:de:gbv:46-elib74144 info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ Arctic Ocean planktonic foraminifera carbon cycle 550 550 Earth sciences and geology ddc:550 Dissertation doctoralThesis 2023 ftsubbremen https://doi.org/10.26092/elib/2638 2023-11-12T23:09:42Z The Arctic Ocean is substantially affected by ongoing warming and sea ice loss. Climatic change further influences biological processes. Altogether, this can result in a modification of the marine carbon cycle, alike important for the climate and the ecosystem of the Arctic Ocean and beyond. In order to unravel the effects of changes in the Arctic Ocean on planktonic foraminifera, one group of marine organisms producing and storing carbon, this thesis presents studies on planktonic foraminifera from all over the Arctic and Subarctic Ocean, working with samples from both within the water column and from the sediments. The produced calcite mass is determined by comprehensive measurements of shell size and weight of all in the Arctic and Subarctic Ocean abundant species of planktonic foraminifera. Measurements on shell weights on samples from plankton nets, sediment traps and sediment cores from a total of 13 locations are used to further calculate foraminifera calcite mass fluxes in the water column and foraminifera calcite mass accumulation in the sediments using published data from all over the Arctic and Subarctic Ocean. Overall, this thesis provides new details on the calcite mass production of planktonic foraminifera in the Arctic and Subarctic Ocean. It is shown that they are a relevant contributor to fluxes of CaCO3 from the pelagic zone towards the sediments. This makes planktonic foraminifera an important component of the marine carbon cycle, which needs to be further constrained to understand how ongoing climate change will influence their contribution to drawdown of carbon. Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Climate change Foraminifera* Planktonic foraminifera Sea ice Subarctic 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 planktonic foraminifera carbon cycle 550 550 Earth sciences and geology ddc:550 |
spellingShingle |
Arctic Ocean planktonic foraminifera carbon cycle 550 550 Earth sciences and geology ddc:550 Tell, Franziska Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
topic_facet |
Arctic Ocean planktonic foraminifera carbon cycle 550 550 Earth sciences and geology ddc:550 |
description |
The Arctic Ocean is substantially affected by ongoing warming and sea ice loss. Climatic change further influences biological processes. Altogether, this can result in a modification of the marine carbon cycle, alike important for the climate and the ecosystem of the Arctic Ocean and beyond. In order to unravel the effects of changes in the Arctic Ocean on planktonic foraminifera, one group of marine organisms producing and storing carbon, this thesis presents studies on planktonic foraminifera from all over the Arctic and Subarctic Ocean, working with samples from both within the water column and from the sediments. The produced calcite mass is determined by comprehensive measurements of shell size and weight of all in the Arctic and Subarctic Ocean abundant species of planktonic foraminifera. Measurements on shell weights on samples from plankton nets, sediment traps and sediment cores from a total of 13 locations are used to further calculate foraminifera calcite mass fluxes in the water column and foraminifera calcite mass accumulation in the sediments using published data from all over the Arctic and Subarctic Ocean. Overall, this thesis provides new details on the calcite mass production of planktonic foraminifera in the Arctic and Subarctic Ocean. It is shown that they are a relevant contributor to fluxes of CaCO3 from the pelagic zone towards the sediments. This makes planktonic foraminifera an important component of the marine carbon cycle, which needs to be further constrained to understand how ongoing climate change will influence their contribution to drawdown of carbon. |
author2 |
Kucera, Michal Morley, Audrey |
format |
Doctoral or Postdoctoral Thesis |
author |
Tell, Franziska |
author_facet |
Tell, Franziska |
author_sort |
Tell, Franziska |
title |
Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
title_short |
Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
title_full |
Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
title_fullStr |
Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
title_full_unstemmed |
Arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
title_sort |
arctic planktonic foraminifera pelagic carbonate production and sedimentation under changing environmental conditions |
publisher |
Universität Bremen |
publishDate |
2023 |
url |
https://media.suub.uni-bremen.de/handle/elib/7414 https://doi.org/10.26092/elib/2638 https://nbn-resolving.org/urn:nbn:de:gbv:46-elib74144 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Foraminifera* Planktonic foraminifera Sea ice Subarctic |
genre_facet |
Arctic Arctic Ocean Climate change Foraminifera* Planktonic foraminifera Sea ice Subarctic |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/7414 https://doi.org/10.26092/elib/2638 doi:10.26092/elib/2638 urn:nbn:de:gbv:46-elib74144 |
op_rights |
info:eu-repo/semantics/openAccess CC BY 4.0 (Attribution) https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.26092/elib/2638 |
_version_ |
1784887542117564416 |