Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula
The Western Antarctic Peninsula (WAP), one of the most productive regions of the Southern Ocean, is currently undergoing rapid environmental changes such as ocean acidification (OA) and increased daily irradiances from enhanced surface‐water stratification. To assess the potential for future biologi...
Published in: | Limnology and Oceanography |
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Language: | English |
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Association for the Sciences of Limnology and Oceanography
2019
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Online Access: | http://nora.nerc.ac.uk/id/eprint/522438/ https://nora.nerc.ac.uk/id/eprint/522438/1/Heiden_et_al-2019-Limnology_and_Oceanography.pdf https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lno.11147 |
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ftnerc:oai:nora.nerc.ac.uk:522438 2023-05-15T13:41:43+02:00 Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula Heiden, Jasmin P. Völkner, Christian Jones, Elizabeth M. van de Poll, Willem H. Buma, Anita G.J. Meredith, Michael de Baar, Hein J.W. Bischof, Kai Wolf-Gladrow, Dieter Trimborn, Scarlett 2019-07 text http://nora.nerc.ac.uk/id/eprint/522438/ https://nora.nerc.ac.uk/id/eprint/522438/1/Heiden_et_al-2019-Limnology_and_Oceanography.pdf https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lno.11147 en eng Association for the Sciences of Limnology and Oceanography https://nora.nerc.ac.uk/id/eprint/522438/1/Heiden_et_al-2019-Limnology_and_Oceanography.pdf Heiden, Jasmin P.; Völkner, Christian; Jones, Elizabeth M.; van de Poll, Willem H.; Buma, Anita G.J.; Meredith, Michael orcid:0000-0002-7342-7756 de Baar, Hein J.W.; Bischof, Kai; Wolf-Gladrow, Dieter; Trimborn, Scarlett. 2019 Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula. Limnology and Oceanography, 64 (4). 1716-1736. https://doi.org/10.1002/lno.11147 <https://doi.org/10.1002/lno.11147> cc_by_4 CC-BY Marine Sciences Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1002/lno.11147 2023-02-04T19:47:53Z The Western Antarctic Peninsula (WAP), one of the most productive regions of the Southern Ocean, is currently undergoing rapid environmental changes such as ocean acidification (OA) and increased daily irradiances from enhanced surface‐water stratification. To assess the potential for future biological CO2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO2 levels (180 μatm, 450 μatm, and 1000 μatm) combined with either moderate or high natural solar radiation (MSR: 124 μmol photons m−2 s−1 and HSR: 435 μmol photons m−2 s−1, respectively). The initial and final phytoplankton communities were numerically dominated by the prymnesiophyte Phaeocystis antarctica, with the single cells initially being predominant and solitary and colonial cells reaching similar high abundances by the end. Only when communities were grown under ambient pCO2 in conjunction with HSR did the small diatom Fragilariopsis pseudonana outcompete P. antarctica at the end of the experiment. Such positive light‐dependent growth response of the diatom was, however, dampened by OA. These changes in community composition were caused by an enhanced photosensitivity of diatoms, especially F. pseudonana, under OA and HSR, reducing thereby their competitiveness toward P. antarctica. Moreover, community primary production (PP) of all treatments yielded similar high rates at the start and the end of the experiment, but with the main contributors shifting from initially large to small cells toward the end. Even though community PP of Ryder Bay phytoplankton was insensitive to the changes in light and CO2 availability, the observed size‐dependent shift in productivity could, however, weaken the biological CO2 sequestration potential of this region in the future. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Antarctic Peninsula Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) Limnology and Oceanography 64 4 1716 1736 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences |
spellingShingle |
Marine Sciences Heiden, Jasmin P. Völkner, Christian Jones, Elizabeth M. van de Poll, Willem H. Buma, Anita G.J. Meredith, Michael de Baar, Hein J.W. Bischof, Kai Wolf-Gladrow, Dieter Trimborn, Scarlett Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
topic_facet |
Marine Sciences |
description |
The Western Antarctic Peninsula (WAP), one of the most productive regions of the Southern Ocean, is currently undergoing rapid environmental changes such as ocean acidification (OA) and increased daily irradiances from enhanced surface‐water stratification. To assess the potential for future biological CO2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO2 levels (180 μatm, 450 μatm, and 1000 μatm) combined with either moderate or high natural solar radiation (MSR: 124 μmol photons m−2 s−1 and HSR: 435 μmol photons m−2 s−1, respectively). The initial and final phytoplankton communities were numerically dominated by the prymnesiophyte Phaeocystis antarctica, with the single cells initially being predominant and solitary and colonial cells reaching similar high abundances by the end. Only when communities were grown under ambient pCO2 in conjunction with HSR did the small diatom Fragilariopsis pseudonana outcompete P. antarctica at the end of the experiment. Such positive light‐dependent growth response of the diatom was, however, dampened by OA. These changes in community composition were caused by an enhanced photosensitivity of diatoms, especially F. pseudonana, under OA and HSR, reducing thereby their competitiveness toward P. antarctica. Moreover, community primary production (PP) of all treatments yielded similar high rates at the start and the end of the experiment, but with the main contributors shifting from initially large to small cells toward the end. Even though community PP of Ryder Bay phytoplankton was insensitive to the changes in light and CO2 availability, the observed size‐dependent shift in productivity could, however, weaken the biological CO2 sequestration potential of this region in the future. |
format |
Article in Journal/Newspaper |
author |
Heiden, Jasmin P. Völkner, Christian Jones, Elizabeth M. van de Poll, Willem H. Buma, Anita G.J. Meredith, Michael de Baar, Hein J.W. Bischof, Kai Wolf-Gladrow, Dieter Trimborn, Scarlett |
author_facet |
Heiden, Jasmin P. Völkner, Christian Jones, Elizabeth M. van de Poll, Willem H. Buma, Anita G.J. Meredith, Michael de Baar, Hein J.W. Bischof, Kai Wolf-Gladrow, Dieter Trimborn, Scarlett |
author_sort |
Heiden, Jasmin P. |
title |
Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
title_short |
Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
title_full |
Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
title_fullStr |
Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
title_full_unstemmed |
Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula |
title_sort |
impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal western antarctic peninsula |
publisher |
Association for the Sciences of Limnology and Oceanography |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/522438/ https://nora.nerc.ac.uk/id/eprint/522438/1/Heiden_et_al-2019-Limnology_and_Oceanography.pdf https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lno.11147 |
long_lat |
ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Ryder Ryder Bay |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Ryder Ryder Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/522438/1/Heiden_et_al-2019-Limnology_and_Oceanography.pdf Heiden, Jasmin P.; Völkner, Christian; Jones, Elizabeth M.; van de Poll, Willem H.; Buma, Anita G.J.; Meredith, Michael orcid:0000-0002-7342-7756 de Baar, Hein J.W.; Bischof, Kai; Wolf-Gladrow, Dieter; Trimborn, Scarlett. 2019 Impact of ocean acidification and high solar radiation on productivity and species composition of a late summer phytoplankton community of the coastal Western Antarctic Peninsula. Limnology and Oceanography, 64 (4). 1716-1736. https://doi.org/10.1002/lno.11147 <https://doi.org/10.1002/lno.11147> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/lno.11147 |
container_title |
Limnology and Oceanography |
container_volume |
64 |
container_issue |
4 |
container_start_page |
1716 |
op_container_end_page |
1736 |
_version_ |
1766154405204197376 |