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 |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | https://www.vliz.be/imisdocs/publications/49/333849.pdf |
id |
ftnioz:oai:imis.nioz.nl:313345 |
---|---|
record_format |
openpolar |
spelling |
ftnioz:oai:imis.nioz.nl:313345 2023-05-15T13:47:57+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, J.P. Völkner, C. Jones, E.M. van de Poll, W.H. Buma, A.G.J. Meredith, M.P. de Baar, H.J.W Bischof, K. Wolf-Gladrow, D. Trimborn, S. 2019 application/pdf https://www.vliz.be/imisdocs/publications/49/333849.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000474301200021 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/lno.11147 https://www.vliz.be/imisdocs/publications/49/333849.pdf info:eu-repo/semantics/openAccess %3Ci%3ELimnol.+Oceanogr.+64%284%29%3C%2Fi%3E%3A+1716-1736.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1002%2Flno.11147%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1002%2Flno.11147%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftnioz https://doi.org/10.1002/lno.11147 2022-05-01T14:10:40Z 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 CO 2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO 2 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 pCO 2 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>/i>, 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 CO 2 availability, the observed size‐dependent shift in productivity could, however, weaken the biological CO 2 sequestration potential of this region in the future. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Antarctic Peninsula Ryder ENVELOPE(-68.333,-68.333,-67.566,-67.566) Ryder Bay ENVELOPE(-68.333,-68.333,-67.567,-67.567) Southern Ocean Limnology and Oceanography 64 4 1716 1736 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
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 CO 2 sequestration of this region, we incubated a natural phytoplankton assemblage from Ryder Bay, WAP, under a range of pCO 2 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 pCO 2 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>/i>, 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 CO 2 availability, the observed size‐dependent shift in productivity could, however, weaken the biological CO 2 sequestration potential of this region in the future. |
format |
Article in Journal/Newspaper |
author |
Heiden, J.P. Völkner, C. Jones, E.M. van de Poll, W.H. Buma, A.G.J. Meredith, M.P. de Baar, H.J.W Bischof, K. Wolf-Gladrow, D. Trimborn, S. |
spellingShingle |
Heiden, J.P. Völkner, C. Jones, E.M. van de Poll, W.H. Buma, A.G.J. Meredith, M.P. de Baar, H.J.W Bischof, K. Wolf-Gladrow, D. Trimborn, S. 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 |
author_facet |
Heiden, J.P. Völkner, C. Jones, E.M. van de Poll, W.H. Buma, A.G.J. Meredith, M.P. de Baar, H.J.W Bischof, K. Wolf-Gladrow, D. Trimborn, S. |
author_sort |
Heiden, J.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 |
publishDate |
2019 |
url |
https://www.vliz.be/imisdocs/publications/49/333849.pdf |
long_lat |
ENVELOPE(-68.333,-68.333,-67.566,-67.566) ENVELOPE(-68.333,-68.333,-67.567,-67.567) |
geographic |
Antarctic Antarctic Peninsula Ryder Ryder Bay Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Ryder Ryder Bay Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Southern Ocean |
op_source |
%3Ci%3ELimnol.+Oceanogr.+64%284%29%3C%2Fi%3E%3A+1716-1736.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1002%2Flno.11147%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1002%2Flno.11147%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000474301200021 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/lno.11147 https://www.vliz.be/imisdocs/publications/49/333849.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
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_ |
1766248054375055360 |