Iron Supply and Demand in 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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ftolddominionuni:oai:digitalcommons.odu.edu:oeas_fac_pubs-1107 2023-06-11T04:07:05+02:00 Iron Supply and Demand in Antarctic Shelf Ecosystem McGillicuddy, D. J., Jr. Sedwick, Peter N. Dinniman, Michael S. Arrigo, K. R. Bibby, T. S. Greenan, B. J. W. Hofmann, Eileen E. Klinck, John M. Smith, W. O., Jr. Mack, S. L. Marsay, C. M. Sohst, B. M. van Dijken, G. L. 2015-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/oeas_fac_pubs/88 https://doi.org/10.1002/2015gl065727 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1107/viewcontent/McGillicuddy_2015_Iron_supply_and_demand_in_an.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/oeas_fac_pubs/88 doi:10.1002/2015gl065727 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1107/viewcontent/McGillicuddy_2015_Iron_supply_and_demand_in_an.pdf OES Faculty Publications Iron Ross Sea Biogeochemical cycling Phytoplankton Taxonomic variability Southern Ocean phytoplankton Continental shelf Particulate iron Growth Waters Ice Fertilization Distributions Biogeochemistry Marine Biology Oceanography article 2015 ftolddominionuni https://doi.org/10.1002/2015gl065727 2023-05-08T17:59:38Z 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. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Sea ice Southern Ocean Old Dominion University: ODU Digital Commons Antarctic Southern Ocean Ross Sea Geophysical Research Letters 42 19 8088 8097 |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Iron Ross Sea Biogeochemical cycling Phytoplankton Taxonomic variability Southern Ocean phytoplankton Continental shelf Particulate iron Growth Waters Ice Fertilization Distributions Biogeochemistry Marine Biology Oceanography |
spellingShingle |
Iron Ross Sea Biogeochemical cycling Phytoplankton Taxonomic variability Southern Ocean phytoplankton Continental shelf Particulate iron Growth Waters Ice Fertilization Distributions Biogeochemistry Marine Biology Oceanography McGillicuddy, D. J., Jr. Sedwick, Peter N. Dinniman, Michael S. Arrigo, K. R. Bibby, T. S. Greenan, B. J. W. Hofmann, Eileen E. Klinck, John M. Smith, W. O., Jr. Mack, S. L. Marsay, C. M. Sohst, B. M. van Dijken, G. L. Iron Supply and Demand in Antarctic Shelf Ecosystem |
topic_facet |
Iron Ross Sea Biogeochemical cycling Phytoplankton Taxonomic variability Southern Ocean phytoplankton Continental shelf Particulate iron Growth Waters Ice Fertilization Distributions Biogeochemistry Marine Biology Oceanography |
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 |
Article in Journal/Newspaper |
author |
McGillicuddy, D. J., Jr. Sedwick, Peter N. Dinniman, Michael S. Arrigo, K. R. Bibby, T. S. Greenan, B. J. W. Hofmann, Eileen E. Klinck, John M. Smith, W. O., Jr. Mack, S. L. Marsay, C. M. Sohst, B. M. van Dijken, G. L. |
author_facet |
McGillicuddy, D. J., Jr. Sedwick, Peter N. Dinniman, Michael S. Arrigo, K. R. Bibby, T. S. Greenan, B. J. W. Hofmann, Eileen E. Klinck, John M. Smith, W. O., Jr. Mack, S. L. Marsay, C. M. Sohst, B. M. van Dijken, G. L. |
author_sort |
McGillicuddy, D. J., Jr. |
title |
Iron Supply and Demand in Antarctic Shelf Ecosystem |
title_short |
Iron Supply and Demand in Antarctic Shelf Ecosystem |
title_full |
Iron Supply and Demand in Antarctic Shelf Ecosystem |
title_fullStr |
Iron Supply and Demand in Antarctic Shelf Ecosystem |
title_full_unstemmed |
Iron Supply and Demand in Antarctic Shelf Ecosystem |
title_sort |
iron supply and demand in antarctic shelf ecosystem |
publisher |
ODU Digital Commons |
publishDate |
2015 |
url |
https://digitalcommons.odu.edu/oeas_fac_pubs/88 https://doi.org/10.1002/2015gl065727 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1107/viewcontent/McGillicuddy_2015_Iron_supply_and_demand_in_an.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 |
OES Faculty Publications |
op_relation |
https://digitalcommons.odu.edu/oeas_fac_pubs/88 doi:10.1002/2015gl065727 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1107/viewcontent/McGillicuddy_2015_Iron_supply_and_demand_in_an.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_ |
1768379678728388608 |