Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry
In this study, we investigate the role of macrozooplankton in the biogeochemistry of the Southern Ocean using a three-dimensional global ocean ecosystem model (FESOM- REcoM2). The macrozooplankton group was parameterized according to characteristics of Antarctic krill and a related fast-sinking detr...
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ftawi:oai:epic.awi.de:55558 2024-09-15T17:46:26+00:00 Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry Karakus, Onur Völker, Christoph Iversen, Morten Wolf-Gladrow, Dieter Hagen, Wilhelm Fach, Bettina Hauck, Judith 2021-07-12 https://epic.awi.de/id/eprint/55558/ https://www.amemr.com/programme.html https://hdl.handle.net/10013/epic.74499695-2dc8-4ecb-a17c-027787228510 unknown Karakus, O. , Völker, C. orcid:0000-0003-3032-114X , Iversen, M. orcid:0000-0002-5287-1110 , Wolf-Gladrow, D. orcid:0000-0001-9531-8668 , Hagen, W. orcid:0000-0002-7462-9931 , Fach, B. orcid:0000-0003-4688-1918 and Hauck, J. orcid:0000-0003-4723-9652 (2021) Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry , AMEMR (Advances in Marine Ecosystem Modelling Research) Symposium, 12 July 2021 - 15 July 2021 . hdl:10013/epic.74499695-2dc8-4ecb-a17c-027787228510 EPIC3AMEMR (Advances in Marine Ecosystem Modelling Research) Symposium, 2021-07-12-2021-07-15 Conference notRev 2021 ftawi 2024-06-24T04:27:29Z In this study, we investigate the role of macrozooplankton in the biogeochemistry of the Southern Ocean using a three-dimensional global ocean ecosystem model (FESOM- REcoM2). The macrozooplankton group was parameterized according to characteristics of Antarctic krill and a related fast-sinking detritus class (larger particles, e.g. fecal pellets) was introduced in the model. It was then analyzed how the ecosystem structure and major carbon export pathways in the Southern Ocean changed through this extension of the model. The spatial distribution of macrozooplankton biomass in the Southern Ocean was reproduced reasonably well. Preliminary results showed that the zooplankton proportion of living compartments (phytoplankton and zooplankton groups) in the model increased. Thus, zooplankton contribution to the particulate organic carbon (POC) flux increased. The contribution of macrozooplankton to POC export at 100 m depth was 0.12 Pg C per year or 15% of total export in the Southern Ocean. The transfer efficiency of organic carbon nearly doubled and reached up to 50% in regions with high macrozooplankton biomass. These results emphasize the important role of macrozooplankton in the Southern Ocean carbon cycle and have implications for studies of the biological carbon pump. Conference Object Antarc* Antarctic Antarctic Krill Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
In this study, we investigate the role of macrozooplankton in the biogeochemistry of the Southern Ocean using a three-dimensional global ocean ecosystem model (FESOM- REcoM2). The macrozooplankton group was parameterized according to characteristics of Antarctic krill and a related fast-sinking detritus class (larger particles, e.g. fecal pellets) was introduced in the model. It was then analyzed how the ecosystem structure and major carbon export pathways in the Southern Ocean changed through this extension of the model. The spatial distribution of macrozooplankton biomass in the Southern Ocean was reproduced reasonably well. Preliminary results showed that the zooplankton proportion of living compartments (phytoplankton and zooplankton groups) in the model increased. Thus, zooplankton contribution to the particulate organic carbon (POC) flux increased. The contribution of macrozooplankton to POC export at 100 m depth was 0.12 Pg C per year or 15% of total export in the Southern Ocean. The transfer efficiency of organic carbon nearly doubled and reached up to 50% in regions with high macrozooplankton biomass. These results emphasize the important role of macrozooplankton in the Southern Ocean carbon cycle and have implications for studies of the biological carbon pump. |
format |
Conference Object |
author |
Karakus, Onur Völker, Christoph Iversen, Morten Wolf-Gladrow, Dieter Hagen, Wilhelm Fach, Bettina Hauck, Judith |
spellingShingle |
Karakus, Onur Völker, Christoph Iversen, Morten Wolf-Gladrow, Dieter Hagen, Wilhelm Fach, Bettina Hauck, Judith Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
author_facet |
Karakus, Onur Völker, Christoph Iversen, Morten Wolf-Gladrow, Dieter Hagen, Wilhelm Fach, Bettina Hauck, Judith |
author_sort |
Karakus, Onur |
title |
Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
title_short |
Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
title_full |
Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
title_fullStr |
Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
title_full_unstemmed |
Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry |
title_sort |
modelling the role of macrozooplankton in the southern ocean biogeochemistry |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55558/ https://www.amemr.com/programme.html https://hdl.handle.net/10013/epic.74499695-2dc8-4ecb-a17c-027787228510 |
genre |
Antarc* Antarctic Antarctic Krill Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Southern Ocean |
op_source |
EPIC3AMEMR (Advances in Marine Ecosystem Modelling Research) Symposium, 2021-07-12-2021-07-15 |
op_relation |
Karakus, O. , Völker, C. orcid:0000-0003-3032-114X , Iversen, M. orcid:0000-0002-5287-1110 , Wolf-Gladrow, D. orcid:0000-0001-9531-8668 , Hagen, W. orcid:0000-0002-7462-9931 , Fach, B. orcid:0000-0003-4688-1918 and Hauck, J. orcid:0000-0003-4723-9652 (2021) Modelling the Role of Macrozooplankton in the Southern Ocean Biogeochemistry , AMEMR (Advances in Marine Ecosystem Modelling Research) Symposium, 12 July 2021 - 15 July 2021 . hdl:10013/epic.74499695-2dc8-4ecb-a17c-027787228510 |
_version_ |
1810494574022361088 |