Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean
Low dissolved iron (DFe) concentrations limit primary production in most high-nutrient low-chlorophyll (HNLC) regions. Increased recycling of iron (Fe) relative to nitrogen (N) by zooplankton may help to sustain phytoplankton production in these conditions. We concurrently determined rates of DFe an...
Published in: | Geophysical Research Letters |
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Online Access: | https://oceanrep.geomar.de/id/eprint/21744/ https://oceanrep.geomar.de/id/eprint/21744/1/grl29216.pdf https://doi.org/10.1029/2012GL051776 |
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ftoceanrep:oai:oceanrep.geomar.de:21744 2023-05-15T17:41:10+02:00 Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean Giering, S. L. C. Steigenberger, S. Achterberg, Eric P. Sanders, R. Mayor, D. J. 2012 text https://oceanrep.geomar.de/id/eprint/21744/ https://oceanrep.geomar.de/id/eprint/21744/1/grl29216.pdf https://doi.org/10.1029/2012GL051776 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/21744/1/grl29216.pdf Giering, S. L. C., Steigenberger, S., Achterberg, E. P. , Sanders, R. and Mayor, D. J. (2012) Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean. Geophysical Research Letters, 39 (12). DOI 10.1029/2012GL051776 <https://doi.org/10.1029/2012GL051776>. doi:10.1029/2012GL051776 Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1029/2012GL051776 2023-04-07T15:09:49Z Low dissolved iron (DFe) concentrations limit primary production in most high-nutrient low-chlorophyll (HNLC) regions. Increased recycling of iron (Fe) relative to nitrogen (N) by zooplankton may help to sustain phytoplankton production in these conditions. We concurrently determined rates of DFe and ammonium (NH4 +) recycling by natural mesozooplankton communities in HNLC conditions of the Northeast Atlantic. NH4 + excretion remained constant and ranged between 14.2-54.1nmol NH4 + mg dry weight-1h-1. Fe recycling ranged between 6-138 pmol DFe mg dry weight-1h-1 during the first hour and decreased thereafter, reflecting the transition from the loss of phytoplankton-derived Fe to basal DFe excretion. Mesozooplankton-driven nutrient recycling was estimated to support 6-59 and <1-13 of the respective phytoplankton requirements for DFe and N; DFe:N regeneration ratios were 5-26 times larger than those required by phytoplankton. Our data suggest that Fe recycling by grazing organisms has the potential to reduce the intensity of HNLC conditions. © 2012. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Geophysical Research Letters 39 12 n/a n/a |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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English |
description |
Low dissolved iron (DFe) concentrations limit primary production in most high-nutrient low-chlorophyll (HNLC) regions. Increased recycling of iron (Fe) relative to nitrogen (N) by zooplankton may help to sustain phytoplankton production in these conditions. We concurrently determined rates of DFe and ammonium (NH4 +) recycling by natural mesozooplankton communities in HNLC conditions of the Northeast Atlantic. NH4 + excretion remained constant and ranged between 14.2-54.1nmol NH4 + mg dry weight-1h-1. Fe recycling ranged between 6-138 pmol DFe mg dry weight-1h-1 during the first hour and decreased thereafter, reflecting the transition from the loss of phytoplankton-derived Fe to basal DFe excretion. Mesozooplankton-driven nutrient recycling was estimated to support 6-59 and <1-13 of the respective phytoplankton requirements for DFe and N; DFe:N regeneration ratios were 5-26 times larger than those required by phytoplankton. Our data suggest that Fe recycling by grazing organisms has the potential to reduce the intensity of HNLC conditions. © 2012. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Giering, S. L. C. Steigenberger, S. Achterberg, Eric P. Sanders, R. Mayor, D. J. |
spellingShingle |
Giering, S. L. C. Steigenberger, S. Achterberg, Eric P. Sanders, R. Mayor, D. J. Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
author_facet |
Giering, S. L. C. Steigenberger, S. Achterberg, Eric P. Sanders, R. Mayor, D. J. |
author_sort |
Giering, S. L. C. |
title |
Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
title_short |
Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
title_full |
Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
title_fullStr |
Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
title_full_unstemmed |
Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean |
title_sort |
elevated iron to nitrogen recycling by mesozooplankton in the northeast atlantic ocean |
publisher |
AGU (American Geophysical Union) |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/21744/ https://oceanrep.geomar.de/id/eprint/21744/1/grl29216.pdf https://doi.org/10.1029/2012GL051776 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/21744/1/grl29216.pdf Giering, S. L. C., Steigenberger, S., Achterberg, E. P. , Sanders, R. and Mayor, D. J. (2012) Elevated iron to nitrogen recycling by mesozooplankton in the Northeast Atlantic Ocean. Geophysical Research Letters, 39 (12). DOI 10.1029/2012GL051776 <https://doi.org/10.1029/2012GL051776>. doi:10.1029/2012GL051776 |
op_doi |
https://doi.org/10.1029/2012GL051776 |
container_title |
Geophysical Research Letters |
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39 |
container_issue |
12 |
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n/a |
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n/a |
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1766142513990598656 |