Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change
An eight year time-series in the Western Antarctic Peninsula (WAP) with an approximately weekly sampling frequency was used to elucidate changes in virioplankton abundance and their drivers in this climatically-sensitive region. Virioplankton abundances at the coastal WAP show a pronounced seasonal...
Published in: | Environmental Microbiology |
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2017
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Online Access: | https://eprints.soton.ac.uk/403803/ https://eprints.soton.ac.uk/403803/1/emi13627.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:403803 2023-07-30T03:57:52+02:00 Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change Evans, Claire Brandsma, Joost Pond, David W. Venables, Hugh J. Meredith, Michael P. Witte, Harry J. Stammerjohn, Sharon Wilson, William H. Clarke, Andrew Brussaard, Corina P.D. 2017-02-22 text https://eprints.soton.ac.uk/403803/ https://eprints.soton.ac.uk/403803/1/emi13627.pdf en English eng https://eprints.soton.ac.uk/403803/1/emi13627.pdf Evans, Claire, Brandsma, Joost, Pond, David W., Venables, Hugh J., Meredith, Michael P., Witte, Harry J., Stammerjohn, Sharon, Wilson, William H., Clarke, Andrew and Brussaard, Corina P.D. (2017) Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change. Environmental Microbiology, 19 (2), 740–755. (doi:10.1111/1462-2920.13627 <http://dx.doi.org/10.1111/1462-2920.13627>). Article PeerReviewed 2017 ftsouthampton https://doi.org/10.1111/1462-2920.13627 2023-07-09T22:12:24Z An eight year time-series in the Western Antarctic Peninsula (WAP) with an approximately weekly sampling frequency was used to elucidate changes in virioplankton abundance and their drivers in this climatically-sensitive region. Virioplankton abundances at the coastal WAP show a pronounced seasonal cycle with interannual variability in the timing and magnitude of the summer maxima. Bacterioplankton abundance is the most influential driving factor of the virioplankton, and exhibit closely coupled dynamics. Sea ice cover and duration predetermine levels of phytoplankton stock and thus, influence virioplankton by dictating the substrates available to the bacterioplankton. However, variations in the composition of the phytoplankton community and particularly the prominence of Diatoms inferred from silicate drawdown, drive inter-annual differences in the magnitude of the virioplankton bloom; likely again mediated through changes in the bacterioplankton. Our findings suggest that future warming within the WAP will cause changes in sea ice that will influence viruses and their microbial hosts through changes in the timing, magnitude and composition of the phytoplankton bloom. Thus the flow of matter and energy through the viral shunt may be decreased with consequences for the Antarctic food web and element cycling. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice University of Southampton: e-Prints Soton Antarctic Antarctic Peninsula The Antarctic Environmental Microbiology 19 2 740 755 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
An eight year time-series in the Western Antarctic Peninsula (WAP) with an approximately weekly sampling frequency was used to elucidate changes in virioplankton abundance and their drivers in this climatically-sensitive region. Virioplankton abundances at the coastal WAP show a pronounced seasonal cycle with interannual variability in the timing and magnitude of the summer maxima. Bacterioplankton abundance is the most influential driving factor of the virioplankton, and exhibit closely coupled dynamics. Sea ice cover and duration predetermine levels of phytoplankton stock and thus, influence virioplankton by dictating the substrates available to the bacterioplankton. However, variations in the composition of the phytoplankton community and particularly the prominence of Diatoms inferred from silicate drawdown, drive inter-annual differences in the magnitude of the virioplankton bloom; likely again mediated through changes in the bacterioplankton. Our findings suggest that future warming within the WAP will cause changes in sea ice that will influence viruses and their microbial hosts through changes in the timing, magnitude and composition of the phytoplankton bloom. Thus the flow of matter and energy through the viral shunt may be decreased with consequences for the Antarctic food web and element cycling. |
format |
Article in Journal/Newspaper |
author |
Evans, Claire Brandsma, Joost Pond, David W. Venables, Hugh J. Meredith, Michael P. Witte, Harry J. Stammerjohn, Sharon Wilson, William H. Clarke, Andrew Brussaard, Corina P.D. |
spellingShingle |
Evans, Claire Brandsma, Joost Pond, David W. Venables, Hugh J. Meredith, Michael P. Witte, Harry J. Stammerjohn, Sharon Wilson, William H. Clarke, Andrew Brussaard, Corina P.D. Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
author_facet |
Evans, Claire Brandsma, Joost Pond, David W. Venables, Hugh J. Meredith, Michael P. Witte, Harry J. Stammerjohn, Sharon Wilson, William H. Clarke, Andrew Brussaard, Corina P.D. |
author_sort |
Evans, Claire |
title |
Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
title_short |
Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
title_full |
Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
title_fullStr |
Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
title_full_unstemmed |
Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change |
title_sort |
drivers of interannual variability in virioplankton abundance at the coastal western antarctic peninsula and the potential effects of climate change |
publishDate |
2017 |
url |
https://eprints.soton.ac.uk/403803/ https://eprints.soton.ac.uk/403803/1/emi13627.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_relation |
https://eprints.soton.ac.uk/403803/1/emi13627.pdf Evans, Claire, Brandsma, Joost, Pond, David W., Venables, Hugh J., Meredith, Michael P., Witte, Harry J., Stammerjohn, Sharon, Wilson, William H., Clarke, Andrew and Brussaard, Corina P.D. (2017) Drivers of interannual variability in virioplankton abundance at the coastal Western Antarctic Peninsula and the potential effects of climate change. Environmental Microbiology, 19 (2), 740–755. (doi:10.1111/1462-2920.13627 <http://dx.doi.org/10.1111/1462-2920.13627>). |
op_doi |
https://doi.org/10.1111/1462-2920.13627 |
container_title |
Environmental Microbiology |
container_volume |
19 |
container_issue |
2 |
container_start_page |
740 |
op_container_end_page |
755 |
_version_ |
1772819865638273024 |