Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities
The oceanic uptake of anthropogenic CO2 leads to a gradual acidification of the ocean. Ocean acidification (OA) is known to affect marine biota from the organism to the ecosystem level but with largely unknown consequences for the cycling of key elements such as carbon, nitrogen, and phosphorus. How...
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ftoceanrep:oai:oceanrep.geomar.de:41912 2023-05-15T17:50:23+02:00 Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities Boxhammer, Tim 2018-01-24 text https://oceanrep.geomar.de/id/eprint/41912/ https://oceanrep.geomar.de/id/eprint/41912/1/Dissertation_tboxhammer.pdf en eng https://oceanrep.geomar.de/id/eprint/41912/1/Dissertation_tboxhammer.pdf Boxhammer, T. (2018) Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 141 pp. cc_by_3.0 info:eu-repo/semantics/openAccess Thesis NonPeerReviewed 2018 ftoceanrep 2023-04-07T15:38:23Z The oceanic uptake of anthropogenic CO2 leads to a gradual acidification of the ocean. Ocean acidification (OA) is known to affect marine biota from the organism to the ecosystem level but with largely unknown consequences for the cycling of key elements such as carbon, nitrogen, and phosphorus. However, the ocean’s ability to absorb anthropogenic carbon or to provide sufficient food for humankind depends on these oceanic material cycles. This doctoral dissertation thus aimed to assess the influence of OA on biogeochemical cycles of elements in natural pelagic food webs of several trophic levels (up to fish larvae) over extended time scales of weeks to months. Large-scale pelagic mesocosms (up to 75 m3 per unit) were deployed in different marine ecosystems and new methods were developed to quantify the downward flux of particulate organic matter under simulated OA. This thesis reports on the potential influence of OA on element pool partitioning and particulate organic matter stoichiometry with consequences for biogeochemical cycling of elements in the ocean. Furthermore the potential and limitations of biogeochemical measurements inside pelagic mesocosms that host entire plankton communities are elucidated. Thesis Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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English |
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The oceanic uptake of anthropogenic CO2 leads to a gradual acidification of the ocean. Ocean acidification (OA) is known to affect marine biota from the organism to the ecosystem level but with largely unknown consequences for the cycling of key elements such as carbon, nitrogen, and phosphorus. However, the ocean’s ability to absorb anthropogenic carbon or to provide sufficient food for humankind depends on these oceanic material cycles. This doctoral dissertation thus aimed to assess the influence of OA on biogeochemical cycles of elements in natural pelagic food webs of several trophic levels (up to fish larvae) over extended time scales of weeks to months. Large-scale pelagic mesocosms (up to 75 m3 per unit) were deployed in different marine ecosystems and new methods were developed to quantify the downward flux of particulate organic matter under simulated OA. This thesis reports on the potential influence of OA on element pool partitioning and particulate organic matter stoichiometry with consequences for biogeochemical cycling of elements in the ocean. Furthermore the potential and limitations of biogeochemical measurements inside pelagic mesocosms that host entire plankton communities are elucidated. |
format |
Thesis |
author |
Boxhammer, Tim |
spellingShingle |
Boxhammer, Tim Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
author_facet |
Boxhammer, Tim |
author_sort |
Boxhammer, Tim |
title |
Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
title_short |
Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
title_full |
Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
title_fullStr |
Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
title_full_unstemmed |
Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
title_sort |
influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/41912/ https://oceanrep.geomar.de/id/eprint/41912/1/Dissertation_tboxhammer.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/41912/1/Dissertation_tboxhammer.pdf Boxhammer, T. (2018) Influence of ocean acidification on elemental mass balances and particulate organic matter stoichiometry in natural plankton communities. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 141 pp. |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
_version_ |
1766157111268474880 |