Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom.
During the 13 day Southern Ocean Iron RE-lease Experiment (SOIREE), dissolved iron concentrations decreased rapidly following each of three iron-enrichments, but remained high (>1 nM, up to 80% as FeII) after the fourth and final enrichment on day 8. The former trend was mainly due to dilution (s...
Published in: | Geophysical Research Letters |
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Language: | English |
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AGU (American Geophysical Union)
2001
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Online Access: | https://oceanrep.geomar.de/id/eprint/1286/ https://oceanrep.geomar.de/id/eprint/1286/1/Retention%20of%20dissolved%20iron%20and%20Fe%20II%20in%20an%20iron%20induced%20Southern%20Ocean%20phytoplankton%20bloom%20-%20Croot%20-%202001%20-%20Geophysical%20Research%20Letters%20-%20Wiley%20Online%20Library.htm https://doi.org/10.1029/2001GL013023 |
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ftoceanrep:oai:oceanrep.geomar.de:1286 2023-05-15T18:24:54+02:00 Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. Croot, Peter Bowie, A. R. Frew, R. D. Maldonado, M. T. Hall, J. A. Safi, K. A. LaRoche, Julie Boyd, P. W. Law, C. S. 2001 text https://oceanrep.geomar.de/id/eprint/1286/ https://oceanrep.geomar.de/id/eprint/1286/1/Retention%20of%20dissolved%20iron%20and%20Fe%20II%20in%20an%20iron%20induced%20Southern%20Ocean%20phytoplankton%20bloom%20-%20Croot%20-%202001%20-%20Geophysical%20Research%20Letters%20-%20Wiley%20Online%20Library.htm https://doi.org/10.1029/2001GL013023 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/1286/1/Retention%20of%20dissolved%20iron%20and%20Fe%20II%20in%20an%20iron%20induced%20Southern%20Ocean%20phytoplankton%20bloom%20-%20Croot%20-%202001%20-%20Geophysical%20Research%20Letters%20-%20Wiley%20Online%20Library.htm Croot, P., Bowie, A. R., Frew, R. D., Maldonado, M. T., Hall, J. A., Safi, K. A., LaRoche, J., Boyd, P. W. and Law, C. S. (2001) Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. Open Access Geophysical Research Letters, 28 (18). DOI 10.1029/2001GL013023 <https://doi.org/10.1029/2001GL013023>. doi:10.1029/2001GL013023 info:eu-repo/semantics/openAccess Article PeerReviewed 2001 ftoceanrep https://doi.org/10.1029/2001GL013023 2023-04-07T14:43:41Z During the 13 day Southern Ocean Iron RE-lease Experiment (SOIREE), dissolved iron concentrations decreased rapidly following each of three iron-enrichments, but remained high (>1 nM, up to 80% as FeII) after the fourth and final enrichment on day 8. The former trend was mainly due to dilution (spreading of iron-fertilized waters) and particle scavenging. The latter may only be explained by a joint production-maintenance mechanism; photoreduction is the only candidate process able to produce sufficiently high FeII, but as such levels persisted overnight (8 hr dark period) —ten times the half—life for this species—a maintenance mechanism (complexation of FeII) is required, and is supported by evidence of increased ligand concentrations on day 12. The source of these ligands and their affinity for FeII is not known. This retention of iron probably permitted the longevity of this bloom raising fundamental questions about iron cycling in HNLC (High Nitrate Low Chlorophyll) Polar waters. Article in Journal/Newspaper Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Geophysical Research Letters 28 18 3425 3428 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
During the 13 day Southern Ocean Iron RE-lease Experiment (SOIREE), dissolved iron concentrations decreased rapidly following each of three iron-enrichments, but remained high (>1 nM, up to 80% as FeII) after the fourth and final enrichment on day 8. The former trend was mainly due to dilution (spreading of iron-fertilized waters) and particle scavenging. The latter may only be explained by a joint production-maintenance mechanism; photoreduction is the only candidate process able to produce sufficiently high FeII, but as such levels persisted overnight (8 hr dark period) —ten times the half—life for this species—a maintenance mechanism (complexation of FeII) is required, and is supported by evidence of increased ligand concentrations on day 12. The source of these ligands and their affinity for FeII is not known. This retention of iron probably permitted the longevity of this bloom raising fundamental questions about iron cycling in HNLC (High Nitrate Low Chlorophyll) Polar waters. |
format |
Article in Journal/Newspaper |
author |
Croot, Peter Bowie, A. R. Frew, R. D. Maldonado, M. T. Hall, J. A. Safi, K. A. LaRoche, Julie Boyd, P. W. Law, C. S. |
spellingShingle |
Croot, Peter Bowie, A. R. Frew, R. D. Maldonado, M. T. Hall, J. A. Safi, K. A. LaRoche, Julie Boyd, P. W. Law, C. S. Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
author_facet |
Croot, Peter Bowie, A. R. Frew, R. D. Maldonado, M. T. Hall, J. A. Safi, K. A. LaRoche, Julie Boyd, P. W. Law, C. S. |
author_sort |
Croot, Peter |
title |
Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
title_short |
Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
title_full |
Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
title_fullStr |
Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
title_full_unstemmed |
Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. |
title_sort |
retention of dissolved iron and feii in an iron induced southern ocean phytoplankton bloom. |
publisher |
AGU (American Geophysical Union) |
publishDate |
2001 |
url |
https://oceanrep.geomar.de/id/eprint/1286/ https://oceanrep.geomar.de/id/eprint/1286/1/Retention%20of%20dissolved%20iron%20and%20Fe%20II%20in%20an%20iron%20induced%20Southern%20Ocean%20phytoplankton%20bloom%20-%20Croot%20-%202001%20-%20Geophysical%20Research%20Letters%20-%20Wiley%20Online%20Library.htm https://doi.org/10.1029/2001GL013023 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/1286/1/Retention%20of%20dissolved%20iron%20and%20Fe%20II%20in%20an%20iron%20induced%20Southern%20Ocean%20phytoplankton%20bloom%20-%20Croot%20-%202001%20-%20Geophysical%20Research%20Letters%20-%20Wiley%20Online%20Library.htm Croot, P., Bowie, A. R., Frew, R. D., Maldonado, M. T., Hall, J. A., Safi, K. A., LaRoche, J., Boyd, P. W. and Law, C. S. (2001) Retention of dissolved iron and FeII in an iron induced Southern Ocean phytoplankton bloom. Open Access Geophysical Research Letters, 28 (18). DOI 10.1029/2001GL013023 <https://doi.org/10.1029/2001GL013023>. doi:10.1029/2001GL013023 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2001GL013023 |
container_title |
Geophysical Research Letters |
container_volume |
28 |
container_issue |
18 |
container_start_page |
3425 |
op_container_end_page |
3428 |
_version_ |
1766205912546017280 |