Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula
Assessments of benthic coastal seawater carbonate chemistry in Antarctica are sparse. The studies have generally been short in duration, during the austral spring/summer, under sea ice, or offshore in ice-free water. Herein we present multi-frequency measurements for seawater collected from the shal...
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Online Access: | http://eprints.gla.ac.uk/110517/ http://eprints.gla.ac.uk/110517/1/110517.pdf http://eprints.gla.ac.uk/110517/2/110517suppl.pdf |
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ftuglasgow:oai:eprints.gla.ac.uk:110517 2023-05-15T13:37:28+02:00 Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula Schram, Julie B. Schoenrock, Kathryn M. McClintock, James B. Amsler, Charles D. Angus, Robert A. 2015 text http://eprints.gla.ac.uk/110517/ http://eprints.gla.ac.uk/110517/1/110517.pdf http://eprints.gla.ac.uk/110517/2/110517suppl.pdf en eng Co-Action Publishing http://eprints.gla.ac.uk/110517/1/110517.pdf http://eprints.gla.ac.uk/110517/2/110517suppl.pdf Schram, J. B., Schoenrock, K. M. <http://eprints.gla.ac.uk/view/author/34254.html>, McClintock, J. B., Amsler, C. D. and Angus, R. A. (2015) Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula. Polar Research <http://eprints.gla.ac.uk/view/journal_volume/Polar_Research.html>, 34, 25582. (doi:10.3402/polar.v34.25582 <http://dx.doi.org/10.3402/polar.v34.25582>) cc_by_nc_4 CC-BY-NC Q Science (General) QD Chemistry Articles PeerReviewed 2015 ftuglasgow https://doi.org/10.3402/polar.v34.25582 2020-01-10T00:58:41Z Assessments of benthic coastal seawater carbonate chemistry in Antarctica are sparse. The studies have generally been short in duration, during the austral spring/summer, under sea ice, or offshore in ice-free water. Herein we present multi-frequency measurements for seawater collected from the shallow coastal benthos on a weekly schedule over one year (May 2012-May 2013), daily schedule over three months (March-May 2013) and semidiurnal schedule over five weeks (March-April 2013). A notable pH increase (max pH=8.62) occurred in the late austral spring/summer (November-December 2012), coinciding with sea-ice break-out and subsequent increase in primary productivity. We detected semidiurnal variation in seawater pH with a maximum variation of 0.13 pH units during the day and 0.11 pH units during the night. Daily variation in pH is likely related to biological activity, consistent with previous research. We calculated the variation in dissolved inorganic carbon (DIC) over each seawater measurement frequency, focusing on the primary DIC drivers in the Palmer Station region. From this, we estimated net biological activity and found it accounts for the greatest variations in DIC. Our seasonal data suggest that this coastal region tends to act as a carbon dioxide source during austral winter months and as a strong sink during the summer. These data characterize present-day seawater carbonate chemistry and the extent to which these measures vary over multiple time scales. This information will inform future experiments designed to evaluate the vulnerability of coastal benthic Antarctic marine organisms to ocean acidification. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Polar Research Sea ice University of Glasgow: Enlighten - Publications Antarctic Antarctic Peninsula Austral Palmer Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Palmer-Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Polar Research 34 1 25582 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
topic |
Q Science (General) QD Chemistry |
spellingShingle |
Q Science (General) QD Chemistry Schram, Julie B. Schoenrock, Kathryn M. McClintock, James B. Amsler, Charles D. Angus, Robert A. Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
topic_facet |
Q Science (General) QD Chemistry |
description |
Assessments of benthic coastal seawater carbonate chemistry in Antarctica are sparse. The studies have generally been short in duration, during the austral spring/summer, under sea ice, or offshore in ice-free water. Herein we present multi-frequency measurements for seawater collected from the shallow coastal benthos on a weekly schedule over one year (May 2012-May 2013), daily schedule over three months (March-May 2013) and semidiurnal schedule over five weeks (March-April 2013). A notable pH increase (max pH=8.62) occurred in the late austral spring/summer (November-December 2012), coinciding with sea-ice break-out and subsequent increase in primary productivity. We detected semidiurnal variation in seawater pH with a maximum variation of 0.13 pH units during the day and 0.11 pH units during the night. Daily variation in pH is likely related to biological activity, consistent with previous research. We calculated the variation in dissolved inorganic carbon (DIC) over each seawater measurement frequency, focusing on the primary DIC drivers in the Palmer Station region. From this, we estimated net biological activity and found it accounts for the greatest variations in DIC. Our seasonal data suggest that this coastal region tends to act as a carbon dioxide source during austral winter months and as a strong sink during the summer. These data characterize present-day seawater carbonate chemistry and the extent to which these measures vary over multiple time scales. This information will inform future experiments designed to evaluate the vulnerability of coastal benthic Antarctic marine organisms to ocean acidification. |
format |
Article in Journal/Newspaper |
author |
Schram, Julie B. Schoenrock, Kathryn M. McClintock, James B. Amsler, Charles D. Angus, Robert A. |
author_facet |
Schram, Julie B. Schoenrock, Kathryn M. McClintock, James B. Amsler, Charles D. Angus, Robert A. |
author_sort |
Schram, Julie B. |
title |
Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
title_short |
Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
title_full |
Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
title_fullStr |
Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
title_full_unstemmed |
Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula |
title_sort |
multi-frequency observations of seawater carbonate chemistry on the central coast of the western antarctic peninsula |
publisher |
Co-Action Publishing |
publishDate |
2015 |
url |
http://eprints.gla.ac.uk/110517/ http://eprints.gla.ac.uk/110517/1/110517.pdf http://eprints.gla.ac.uk/110517/2/110517suppl.pdf |
long_lat |
ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-64.050,-64.050,-64.770,-64.770) |
geographic |
Antarctic Antarctic Peninsula Austral Palmer Station Palmer-Station |
geographic_facet |
Antarctic Antarctic Peninsula Austral Palmer Station Palmer-Station |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Polar Research Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification Polar Research Sea ice |
op_relation |
http://eprints.gla.ac.uk/110517/1/110517.pdf http://eprints.gla.ac.uk/110517/2/110517suppl.pdf Schram, J. B., Schoenrock, K. M. <http://eprints.gla.ac.uk/view/author/34254.html>, McClintock, J. B., Amsler, C. D. and Angus, R. A. (2015) Multi-frequency observations of seawater carbonate chemistry on the central coast of the western Antarctic peninsula. Polar Research <http://eprints.gla.ac.uk/view/journal_volume/Polar_Research.html>, 34, 25582. (doi:10.3402/polar.v34.25582 <http://dx.doi.org/10.3402/polar.v34.25582>) |
op_rights |
cc_by_nc_4 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.3402/polar.v34.25582 |
container_title |
Polar Research |
container_volume |
34 |
container_issue |
1 |
container_start_page |
25582 |
_version_ |
1766092119935549440 |