Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study
The West Antarctic Peninsula (WAP) exhibits strong spatial and temporal oceanographic variability, resulting in highly heterogeneous biological productivity. Calcifying organisms that live in the waters off the WAP respond to temporal and spatial variations in ocean temperature and chemistry. These...
Published in: | Biogeosciences |
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European Geosciences Union
2019
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Online Access: | https://doi.org/10.5194/bg-16-3267-2019 https://nottingham-repository.worktribe.com/file/2469470/1/Temporal%20variability%20in%20foraminiferal%20morphology%20and%20geochemistryat%20the%20West%20Antarctic%20Peninsula%3A%20a%20sediment%20trap%20study https://nottingham-repository.worktribe.com/output/2469470 |
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ftunnottinghamrr:oai:nottingham-repository.worktribe.com:2469470 2023-05-15T13:54:56+02:00 Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study Mikis, Anna Hendry, Katharine R. Pike, Jennifer Schmidt, Daniela N. Edgar, Kirsty M. Peck, Victoria Peeters, Frank J. C. Leng, Melanie J. Meredith, Michael P. Todd, Chloe L. Stammerjohn, Sharon Ducklow, Hugh 2019-08-30 https://doi.org/10.5194/bg-16-3267-2019 https://nottingham-repository.worktribe.com/file/2469470/1/Temporal%20variability%20in%20foraminiferal%20morphology%20and%20geochemistryat%20the%20West%20Antarctic%20Peninsula%3A%20a%20sediment%20trap%20study https://nottingham-repository.worktribe.com/output/2469470 unknown European Geosciences Union https://nottingham-repository.worktribe.com/output/2469470 Biogeosciences Discussions Volume 16 Pagination 3267-3282 doi:https://doi.org/10.5194/bg-16-3267-2019 https://nottingham-repository.worktribe.com/file/2469470/1/Temporal%20variability%20in%20foraminiferal%20morphology%20and%20geochemistryat%20the%20West%20Antarctic%20Peninsula%3A%20a%20sediment%20trap%20study 1726-4170 doi:10.5194/bg-16-3267-2019 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY Earth-Surface Processes Ecology Evolution Behavior and Systematics Centre for Environmental Geochemistry Journal Article 2019 ftunnottinghamrr https://doi.org/10.5194/bg-16-3267-2019 2022-10-13T22:13:41Z The West Antarctic Peninsula (WAP) exhibits strong spatial and temporal oceanographic variability, resulting in highly heterogeneous biological productivity. Calcifying organisms that live in the waters off the WAP respond to temporal and spatial variations in ocean temperature and chemistry. These marine calcifiers are potentially threatened by regional climate change with waters already naturally close to carbonate undersaturation. Future projections of carbonate production in the Southern Ocean are challenging due to the lack of historical data collection and complex, decadal climate variability. Here we present a 6-year-long record of the shell fluxes, morphology and stable isotope variability of the polar planktic foraminifera Neogloboquadrina pachyderma (sensu stricto) from near Palmer Station, Antarctica. This species is fundamental to Southern Ocean planktic carbonate production as it is one of the very few planktic foraminifer species adapted to the marine polar environments. We use these new data to obtain insights into its ecology and to derive a robust assessment of the response of this polar species to environmental change. Morphology and stable isotope composition reveal the presence of different growth stages within this tightly defined species. Inter- and intra-annual variability of foraminiferal flux and size is evident and driven by a combination of environmental forcing parameters, most importantly food availability, temperature and sea ice duration and extent. Foraminiferal growth occurs throughout the austral year and is influenced by environmental change, a large portion of which is driven by the Southern Annular Mode and El Niño–Southern Oscillation. A distinct seasonal production is observed, with the highest shell fluxes during the warmest and most productive months of the year. The sensitivity of calcifying foraminifera to environmental variability in this region, from weeks to decades, has implications both for their response to future climatic change and for their use as palaeoclimate ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Neogloboquadrina pachyderma Sea ice Southern Ocean University of Nottingham: Repository@Nottingham Antarctic Southern Ocean 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) Biogeosciences 16 16 3267 3282 |
institution |
Open Polar |
collection |
University of Nottingham: Repository@Nottingham |
op_collection_id |
ftunnottinghamrr |
language |
unknown |
topic |
Earth-Surface Processes Ecology Evolution Behavior and Systematics Centre for Environmental Geochemistry |
spellingShingle |
Earth-Surface Processes Ecology Evolution Behavior and Systematics Centre for Environmental Geochemistry Mikis, Anna Hendry, Katharine R. Pike, Jennifer Schmidt, Daniela N. Edgar, Kirsty M. Peck, Victoria Peeters, Frank J. C. Leng, Melanie J. Meredith, Michael P. Todd, Chloe L. Stammerjohn, Sharon Ducklow, Hugh Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
topic_facet |
Earth-Surface Processes Ecology Evolution Behavior and Systematics Centre for Environmental Geochemistry |
description |
The West Antarctic Peninsula (WAP) exhibits strong spatial and temporal oceanographic variability, resulting in highly heterogeneous biological productivity. Calcifying organisms that live in the waters off the WAP respond to temporal and spatial variations in ocean temperature and chemistry. These marine calcifiers are potentially threatened by regional climate change with waters already naturally close to carbonate undersaturation. Future projections of carbonate production in the Southern Ocean are challenging due to the lack of historical data collection and complex, decadal climate variability. Here we present a 6-year-long record of the shell fluxes, morphology and stable isotope variability of the polar planktic foraminifera Neogloboquadrina pachyderma (sensu stricto) from near Palmer Station, Antarctica. This species is fundamental to Southern Ocean planktic carbonate production as it is one of the very few planktic foraminifer species adapted to the marine polar environments. We use these new data to obtain insights into its ecology and to derive a robust assessment of the response of this polar species to environmental change. Morphology and stable isotope composition reveal the presence of different growth stages within this tightly defined species. Inter- and intra-annual variability of foraminiferal flux and size is evident and driven by a combination of environmental forcing parameters, most importantly food availability, temperature and sea ice duration and extent. Foraminiferal growth occurs throughout the austral year and is influenced by environmental change, a large portion of which is driven by the Southern Annular Mode and El Niño–Southern Oscillation. A distinct seasonal production is observed, with the highest shell fluxes during the warmest and most productive months of the year. The sensitivity of calcifying foraminifera to environmental variability in this region, from weeks to decades, has implications both for their response to future climatic change and for their use as palaeoclimate ... |
format |
Article in Journal/Newspaper |
author |
Mikis, Anna Hendry, Katharine R. Pike, Jennifer Schmidt, Daniela N. Edgar, Kirsty M. Peck, Victoria Peeters, Frank J. C. Leng, Melanie J. Meredith, Michael P. Todd, Chloe L. Stammerjohn, Sharon Ducklow, Hugh |
author_facet |
Mikis, Anna Hendry, Katharine R. Pike, Jennifer Schmidt, Daniela N. Edgar, Kirsty M. Peck, Victoria Peeters, Frank J. C. Leng, Melanie J. Meredith, Michael P. Todd, Chloe L. Stammerjohn, Sharon Ducklow, Hugh |
author_sort |
Mikis, Anna |
title |
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
title_short |
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
title_full |
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
title_fullStr |
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
title_full_unstemmed |
Temporal variability in foraminiferal morphology and geochemistry at the West Antarctic Peninsula: a sediment trap study |
title_sort |
temporal variability in foraminiferal morphology and geochemistry at the west antarctic peninsula: a sediment trap study |
publisher |
European Geosciences Union |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-3267-2019 https://nottingham-repository.worktribe.com/file/2469470/1/Temporal%20variability%20in%20foraminiferal%20morphology%20and%20geochemistryat%20the%20West%20Antarctic%20Peninsula%3A%20a%20sediment%20trap%20study https://nottingham-repository.worktribe.com/output/2469470 |
long_lat |
ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-64.050,-64.050,-64.770,-64.770) |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Austral Palmer Station Palmer-Station |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Austral Palmer Station Palmer-Station |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Neogloboquadrina pachyderma Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Neogloboquadrina pachyderma Sea ice Southern Ocean |
op_relation |
https://nottingham-repository.worktribe.com/output/2469470 Biogeosciences Discussions Volume 16 Pagination 3267-3282 doi:https://doi.org/10.5194/bg-16-3267-2019 https://nottingham-repository.worktribe.com/file/2469470/1/Temporal%20variability%20in%20foraminiferal%20morphology%20and%20geochemistryat%20the%20West%20Antarctic%20Peninsula%3A%20a%20sediment%20trap%20study 1726-4170 doi:10.5194/bg-16-3267-2019 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-16-3267-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
16 |
container_start_page |
3267 |
op_container_end_page |
3282 |
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1766261128861581312 |