Seasonal iron depletion in temperate shelf seas
Our study followed the seasonal cycling of soluble (SFe), colloidal (CFe), dissolved (DFe), total dissolvable (TDFe), labile particulate (LPFe) and total particulate (TPFe) iron in the Celtic Sea (NE Atlantic Ocean). Preferential uptake of SFe occurred during the spring bloom, preceding the removal...
Published in: | Geophysical Research Letters |
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Language: | English |
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AGU (American Geophysical Union)
2017
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Online Access: | https://oceanrep.geomar.de/id/eprint/39229/ https://oceanrep.geomar.de/id/eprint/39229/7/Birchill_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL073881 |
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ftoceanrep:oai:oceanrep.geomar.de:39229 2023-05-15T18:07:33+02:00 Seasonal iron depletion in temperate shelf seas Birchill, Antony J. Milne, Angela S. Woodward, E. Malcolm Harris, Carolyn Annett, Amber Rusiecka, Dagmara Achterberg, Eric P. Gledhill, Martha Ussher, Simon J. Worsfold, Paul J. Geibert, Walter Lohan, Maeve C. 2017-09 text https://oceanrep.geomar.de/id/eprint/39229/ https://oceanrep.geomar.de/id/eprint/39229/7/Birchill_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL073881 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/39229/7/Birchill_et_al-2017-Geophysical_Research_Letters.pdf Birchill, A. J., Milne, A., S. Woodward, E. M., Harris, C., Annett, A., Rusiecka, D., Achterberg, E. P. , Gledhill, M. , Ussher, S. J., Worsfold, P. J., Geibert, W. and Lohan, M. C. (2017) Seasonal iron depletion in temperate shelf seas. Open Access Geophysical Research Letters, 44 (17). pp. 8987-8996. DOI 10.1002/2017GL073881 <https://doi.org/10.1002/2017GL073881>. doi:10.1002/2017GL073881 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2017 ftoceanrep https://doi.org/10.1002/2017GL073881 2023-04-07T15:35:04Z Our study followed the seasonal cycling of soluble (SFe), colloidal (CFe), dissolved (DFe), total dissolvable (TDFe), labile particulate (LPFe) and total particulate (TPFe) iron in the Celtic Sea (NE Atlantic Ocean). Preferential uptake of SFe occurred during the spring bloom, preceding the removal of CFe. Uptake and export of Fe during the spring bloom, coupled with a reduction in vertical exchange, led to Fe deplete surface waters (<0.2 nM DFe; 0.11 nM LPFe, 0.45 nM TDFe, 1.84 nM TPFe) during summer stratification. Below the seasonal thermocline, DFe concentrations increased from spring to autumn, mirroring NO3- and consistent with supply from remineralised sinking organic material, and cycled independently of particulate Fe over seasonal timescales. These results demonstrate that summer Fe availability is comparable to the seasonally Fe limited Ross Sea shelf, and therefore is likely low enough to affect phytoplankton growth and species composition. Article in Journal/Newspaper Ross Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Ross Sea Geophysical Research Letters 44 17 8987 8996 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Our study followed the seasonal cycling of soluble (SFe), colloidal (CFe), dissolved (DFe), total dissolvable (TDFe), labile particulate (LPFe) and total particulate (TPFe) iron in the Celtic Sea (NE Atlantic Ocean). Preferential uptake of SFe occurred during the spring bloom, preceding the removal of CFe. Uptake and export of Fe during the spring bloom, coupled with a reduction in vertical exchange, led to Fe deplete surface waters (<0.2 nM DFe; 0.11 nM LPFe, 0.45 nM TDFe, 1.84 nM TPFe) during summer stratification. Below the seasonal thermocline, DFe concentrations increased from spring to autumn, mirroring NO3- and consistent with supply from remineralised sinking organic material, and cycled independently of particulate Fe over seasonal timescales. These results demonstrate that summer Fe availability is comparable to the seasonally Fe limited Ross Sea shelf, and therefore is likely low enough to affect phytoplankton growth and species composition. |
format |
Article in Journal/Newspaper |
author |
Birchill, Antony J. Milne, Angela S. Woodward, E. Malcolm Harris, Carolyn Annett, Amber Rusiecka, Dagmara Achterberg, Eric P. Gledhill, Martha Ussher, Simon J. Worsfold, Paul J. Geibert, Walter Lohan, Maeve C. |
spellingShingle |
Birchill, Antony J. Milne, Angela S. Woodward, E. Malcolm Harris, Carolyn Annett, Amber Rusiecka, Dagmara Achterberg, Eric P. Gledhill, Martha Ussher, Simon J. Worsfold, Paul J. Geibert, Walter Lohan, Maeve C. Seasonal iron depletion in temperate shelf seas |
author_facet |
Birchill, Antony J. Milne, Angela S. Woodward, E. Malcolm Harris, Carolyn Annett, Amber Rusiecka, Dagmara Achterberg, Eric P. Gledhill, Martha Ussher, Simon J. Worsfold, Paul J. Geibert, Walter Lohan, Maeve C. |
author_sort |
Birchill, Antony J. |
title |
Seasonal iron depletion in temperate shelf seas |
title_short |
Seasonal iron depletion in temperate shelf seas |
title_full |
Seasonal iron depletion in temperate shelf seas |
title_fullStr |
Seasonal iron depletion in temperate shelf seas |
title_full_unstemmed |
Seasonal iron depletion in temperate shelf seas |
title_sort |
seasonal iron depletion in temperate shelf seas |
publisher |
AGU (American Geophysical Union) |
publishDate |
2017 |
url |
https://oceanrep.geomar.de/id/eprint/39229/ https://oceanrep.geomar.de/id/eprint/39229/7/Birchill_et_al-2017-Geophysical_Research_Letters.pdf https://doi.org/10.1002/2017GL073881 |
geographic |
Ross Sea |
geographic_facet |
Ross Sea |
genre |
Ross Sea |
genre_facet |
Ross Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/39229/7/Birchill_et_al-2017-Geophysical_Research_Letters.pdf Birchill, A. J., Milne, A., S. Woodward, E. M., Harris, C., Annett, A., Rusiecka, D., Achterberg, E. P. , Gledhill, M. , Ussher, S. J., Worsfold, P. J., Geibert, W. and Lohan, M. C. (2017) Seasonal iron depletion in temperate shelf seas. Open Access Geophysical Research Letters, 44 (17). pp. 8987-8996. DOI 10.1002/2017GL073881 <https://doi.org/10.1002/2017GL073881>. doi:10.1002/2017GL073881 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017GL073881 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
17 |
container_start_page |
8987 |
op_container_end_page |
8996 |
_version_ |
1766179754967302144 |