Iron supply and demand in an Antarctic shelf ecosystem
The Ross Sea sustains a rich ecosystem and is the most productive sector of the Southern Ocean. Most of this production occurs within a polynya during the November-February period, when the availability of dissolved iron (dFe) is thought to exert the major control on phytoplankton growth. Here we co...
Published in: | Geophysical Research Letters |
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Online Access: | https://scholarworks.wm.edu/vimsarticles/826 https://scholarworks.wm.edu/context/vimsarticles/article/1826/viewcontent/2015GL065727.pdf |
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1826 2023-06-11T04:06:17+02:00 Iron supply and demand in an Antarctic shelf ecosystem McGillicuddy, DJ Sedwick, PN Dinniman, MS Arrigo, KR Bibby, TS Greenan, BJW Hofmann, EE Klinck, JM Smith, Walker O., Jr. Mack, SL Marsay, CM Sohst, BM van Dijken, GL 2015-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/826 doi: 10.1002/2015GL065727 https://scholarworks.wm.edu/context/vimsarticles/article/1826/viewcontent/2015GL065727.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/826 doi: 10.1002/2015GL065727 https://scholarworks.wm.edu/context/vimsarticles/article/1826/viewcontent/2015GL065727.pdf VIMS Articles Phytoplankton Taxonomic Variability Southern-Ocean Phytoplankton Ross Sea Continental-Shelf Particulate Iron Growth Waters Ice Fertilization Distributions Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries text 2015 ftwilliammarycol https://doi.org/10.1002/2015GL065727 2023-05-04T17:43:31Z The Ross Sea sustains a rich ecosystem and is the most productive sector of the Southern Ocean. Most of this production occurs within a polynya during the November-February period, when the availability of dissolved iron (dFe) is thought to exert the major control on phytoplankton growth. Here we combine new data on the distribution of dFe, high-resolution model simulations of ice melt and regional circulation, and satellite-based estimates of primary production to quantify iron supply and demand over the Ross Sea continental shelf. Our analysis suggests that the largest sources of dFe to the euphotic zone are wintertime mixing and melting sea ice, with a lesser input from intrusions of Circumpolar Deep Water and a small amount from melting glacial ice. Together these sources are in approximate balance with the annual biological dFe demand inferred from satellite-based productivity algorithms, although both the supply and demand estimates have large uncertainties. Text Antarc* Antarctic Ross Sea Sea ice Southern Ocean W&M ScholarWorks Antarctic Southern Ocean Ross Sea Geophysical Research Letters 42 19 8088 8097 |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Phytoplankton Taxonomic Variability Southern-Ocean Phytoplankton Ross Sea Continental-Shelf Particulate Iron Growth Waters Ice Fertilization Distributions Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
spellingShingle |
Phytoplankton Taxonomic Variability Southern-Ocean Phytoplankton Ross Sea Continental-Shelf Particulate Iron Growth Waters Ice Fertilization Distributions Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries McGillicuddy, DJ Sedwick, PN Dinniman, MS Arrigo, KR Bibby, TS Greenan, BJW Hofmann, EE Klinck, JM Smith, Walker O., Jr. Mack, SL Marsay, CM Sohst, BM van Dijken, GL Iron supply and demand in an Antarctic shelf ecosystem |
topic_facet |
Phytoplankton Taxonomic Variability Southern-Ocean Phytoplankton Ross Sea Continental-Shelf Particulate Iron Growth Waters Ice Fertilization Distributions Physical Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
description |
The Ross Sea sustains a rich ecosystem and is the most productive sector of the Southern Ocean. Most of this production occurs within a polynya during the November-February period, when the availability of dissolved iron (dFe) is thought to exert the major control on phytoplankton growth. Here we combine new data on the distribution of dFe, high-resolution model simulations of ice melt and regional circulation, and satellite-based estimates of primary production to quantify iron supply and demand over the Ross Sea continental shelf. Our analysis suggests that the largest sources of dFe to the euphotic zone are wintertime mixing and melting sea ice, with a lesser input from intrusions of Circumpolar Deep Water and a small amount from melting glacial ice. Together these sources are in approximate balance with the annual biological dFe demand inferred from satellite-based productivity algorithms, although both the supply and demand estimates have large uncertainties. |
format |
Text |
author |
McGillicuddy, DJ Sedwick, PN Dinniman, MS Arrigo, KR Bibby, TS Greenan, BJW Hofmann, EE Klinck, JM Smith, Walker O., Jr. Mack, SL Marsay, CM Sohst, BM van Dijken, GL |
author_facet |
McGillicuddy, DJ Sedwick, PN Dinniman, MS Arrigo, KR Bibby, TS Greenan, BJW Hofmann, EE Klinck, JM Smith, Walker O., Jr. Mack, SL Marsay, CM Sohst, BM van Dijken, GL |
author_sort |
McGillicuddy, DJ |
title |
Iron supply and demand in an Antarctic shelf ecosystem |
title_short |
Iron supply and demand in an Antarctic shelf ecosystem |
title_full |
Iron supply and demand in an Antarctic shelf ecosystem |
title_fullStr |
Iron supply and demand in an Antarctic shelf ecosystem |
title_full_unstemmed |
Iron supply and demand in an Antarctic shelf ecosystem |
title_sort |
iron supply and demand in an antarctic shelf ecosystem |
publisher |
W&M ScholarWorks |
publishDate |
2015 |
url |
https://scholarworks.wm.edu/vimsarticles/826 https://scholarworks.wm.edu/context/vimsarticles/article/1826/viewcontent/2015GL065727.pdf |
geographic |
Antarctic Southern Ocean Ross Sea |
geographic_facet |
Antarctic Southern Ocean Ross Sea |
genre |
Antarc* Antarctic Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice Southern Ocean |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/826 doi: 10.1002/2015GL065727 https://scholarworks.wm.edu/context/vimsarticles/article/1826/viewcontent/2015GL065727.pdf |
op_doi |
https://doi.org/10.1002/2015GL065727 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
19 |
container_start_page |
8088 |
op_container_end_page |
8097 |
_version_ |
1768378158903459840 |