DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea
Arctic and Antarctic pack ice are a unique habitat for ice-associated microalgae, which provide the basis of the food web through primary production and carbon transfer to higher trophic levels. Additionally, various ice-algal species can produce the secondary metabolite dimethylsulfoniopropionate (...
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2023
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ftunigroningenpu:oai:pure.rug.nl:publications/60d8306b-a946-4d8a-bcd4-937e98733907 2024-06-02T07:56:14+00:00 DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea Bach, Mareike Flores, Hauke Peeken, Ilka Van de Putte, Anton Stefels, Jacqueline 2023-06-05 https://hdl.handle.net/11370/60d8306b-a946-4d8a-bcd4-937e98733907 https://research.rug.nl/en/publications/60d8306b-a946-4d8a-bcd4-937e98733907 https://www.igsoc.org/wp-content/uploads/2023/06/procabstracts_80.html eng eng https://research.rug.nl/en/publications/60d8306b-a946-4d8a-bcd4-937e98733907 info:eu-repo/semantics/restrictedAccess Bach , M , Flores , H , Peeken , I , Van de Putte , A & Stefels , J 2023 , ' DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea ' , International Symposium on Sea Ice across Spatial and Temporal Scales , Bremerhaven , Germany , 04/06/2023 - 09/06/2023 . conferenceObject 2023 ftunigroningenpu 2024-05-07T22:09:42Z Arctic and Antarctic pack ice are a unique habitat for ice-associated microalgae, which provide the basis of the food web through primary production and carbon transfer to higher trophic levels. Additionally, various ice-algal species can produce the secondary metabolite dimethylsulfoniopropionate (DMSP). This sulphur compound is a precursor of the climate-active gas dimethylsulfide (DMS). Several physiological functions of DMSP have been suggested, including functions in stress response such as cryoprotectant or osmolyte. In addition, DMSP functions as a chemical signalling compound for higher trophic levels. However, the concrete physiological role of DMSP is still elusive and it is uncertain how microalgae will adapt to changing conditions in terms of DMSP production. In order to predict higher or lower production of DMSP in the oceans in the future it is important to quantify the production of DMSP relative to growth in ambient communities of sea ice. There have been limited studies investigating combined DMSP and carbon production in sea ice and especially newly formed sea ice in autumn season has been under-sampled. We present results from newly formed sea ice sampled on the RV Polarstern expedition PS129 in March/April 2022 through the Weddell Sea. Biomass, chlorophyll a content and species composition were analysed in ice cores from pancake ice, first year ice, under-ice water and an autumn pancake ice bloom. Incubation experiments at a range of light intensities (photosynthesis-irradiance curve), to which a set of stable isotopes were added, were used to quantify DMSP production, DMSP uptake rates and primary production in the bottom sea ice communities. This comprehensive data set will be used to provide new insights into the Southern Ocean sulphur cycle and phytoplankton dynamics during an atmospherically relevant season, the autumn. Conference Object Antarc* Antarctic Arctic Phytoplankton Sea ice Southern Ocean Weddell Sea University of Groningen research database Antarctic Arctic Pancake ENVELOPE(-55.815,-55.815,52.600,52.600) Southern Ocean Weddell Weddell Sea |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
description |
Arctic and Antarctic pack ice are a unique habitat for ice-associated microalgae, which provide the basis of the food web through primary production and carbon transfer to higher trophic levels. Additionally, various ice-algal species can produce the secondary metabolite dimethylsulfoniopropionate (DMSP). This sulphur compound is a precursor of the climate-active gas dimethylsulfide (DMS). Several physiological functions of DMSP have been suggested, including functions in stress response such as cryoprotectant or osmolyte. In addition, DMSP functions as a chemical signalling compound for higher trophic levels. However, the concrete physiological role of DMSP is still elusive and it is uncertain how microalgae will adapt to changing conditions in terms of DMSP production. In order to predict higher or lower production of DMSP in the oceans in the future it is important to quantify the production of DMSP relative to growth in ambient communities of sea ice. There have been limited studies investigating combined DMSP and carbon production in sea ice and especially newly formed sea ice in autumn season has been under-sampled. We present results from newly formed sea ice sampled on the RV Polarstern expedition PS129 in March/April 2022 through the Weddell Sea. Biomass, chlorophyll a content and species composition were analysed in ice cores from pancake ice, first year ice, under-ice water and an autumn pancake ice bloom. Incubation experiments at a range of light intensities (photosynthesis-irradiance curve), to which a set of stable isotopes were added, were used to quantify DMSP production, DMSP uptake rates and primary production in the bottom sea ice communities. This comprehensive data set will be used to provide new insights into the Southern Ocean sulphur cycle and phytoplankton dynamics during an atmospherically relevant season, the autumn. |
format |
Conference Object |
author |
Bach, Mareike Flores, Hauke Peeken, Ilka Van de Putte, Anton Stefels, Jacqueline |
spellingShingle |
Bach, Mareike Flores, Hauke Peeken, Ilka Van de Putte, Anton Stefels, Jacqueline DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
author_facet |
Bach, Mareike Flores, Hauke Peeken, Ilka Van de Putte, Anton Stefels, Jacqueline |
author_sort |
Bach, Mareike |
title |
DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
title_short |
DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
title_full |
DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
title_fullStr |
DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
title_full_unstemmed |
DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea |
title_sort |
dmsp production, primary productivity and community composition in new year sea ice in the weddell sea |
publishDate |
2023 |
url |
https://hdl.handle.net/11370/60d8306b-a946-4d8a-bcd4-937e98733907 https://research.rug.nl/en/publications/60d8306b-a946-4d8a-bcd4-937e98733907 https://www.igsoc.org/wp-content/uploads/2023/06/procabstracts_80.html |
long_lat |
ENVELOPE(-55.815,-55.815,52.600,52.600) |
geographic |
Antarctic Arctic Pancake Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Arctic Pancake Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Arctic Phytoplankton Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Arctic Phytoplankton Sea ice Southern Ocean Weddell Sea |
op_source |
Bach , M , Flores , H , Peeken , I , Van de Putte , A & Stefels , J 2023 , ' DMSP production, primary productivity and community composition in new year sea ice in the Weddell Sea ' , International Symposium on Sea Ice across Spatial and Temporal Scales , Bremerhaven , Germany , 04/06/2023 - 09/06/2023 . |
op_relation |
https://research.rug.nl/en/publications/60d8306b-a946-4d8a-bcd4-937e98733907 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1800754502625656832 |