Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean
Surface δ15NPON increased 3.92 ± 0.48‰ over the course of 20 days following additions of iron (Fe) to an eddy in close proximity to the Antarctic Polar Front in the Atlantic sector of the Southern Ocean. The change in δ15NPON was associated with an increase in the >20 μm size fraction, leading to...
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fthzgzmk:oai:publications.hereon.de:28828 2023-06-11T04:05:56+02:00 Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean Berg, G.M. Arrigo, K.R. Mills, M.M. Long, M.C. Bellerby, R. Strass, V. Savoye, N. Roettgers, R. Croot, P. Webb, A. 2011 https://publications.hereon.de/id/28828 https://publications.hzg.de/id/28828 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/berg_28828.pdf en eng AGU http://dx.doi.org/10.1029/2010GB003824 urn:issn:0886-6236 https://publications.hereon.de/id/28828 https://publications.hzg.de/id/28828 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/berg_28828.pdf info:eu-repo/semantics/openAccess open_access oa_gruen issn:0886-6236 Berg, G.M.; Arrigo, K.R.; Mills, M.M.; Long, M.C.; Bellerby, R.; Strass, V.; Savoye, N.; Roettgers, R.; Croot, P.; Webb, A.: Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean. In: Global Biogeochemical Cycles. Vol. 25 (2011) 3, GB 3013. (DOI:10.1029/2010GB003824) info:eu-repo/classification/ddc/551 info:eu-repo/semantics/article Zeitschrift Artikel 2011 fthzgzmk https://doi.org/10.1029/2010GB003824 2023-05-28T23:23:17Z Surface δ15NPON increased 3.92 ± 0.48‰ over the course of 20 days following additions of iron (Fe) to an eddy in close proximity to the Antarctic Polar Front in the Atlantic sector of the Southern Ocean. The change in δ15NPON was associated with an increase in the >20 μm size fraction, leading to a maximal difference of 6.23‰ between the >20 μm and <20 μm size fractions. Surface δ13CPOC increased 1.18 ± 0.31‰ over the same period. After a decrease in particulate organic matter in the surface layer, a second phytoplankton community developed that accumulated less biomass, had a slower growth rate and was characterized by an offset of 1.56‰ in δ13CPOC relative to the first community. During growth of the second community, surface δ13CPOC further increased 0.83 ± 0.13‰. Here we speculate on ways that carboxylation, nitrogen assimilation, substrate pool enrichment and community composition may have contributed to the gradual increase in δ13CPOC associated with phytoplankton biomass accumulation, as well as the systematic offset in δ13CPOC between the two phytoplankton communities. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Hereon Publications (Helmholtz-Zentrum) Antarctic Southern Ocean The Antarctic Global Biogeochemical Cycles 25 3 n/a n/a |
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Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
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fthzgzmk |
language |
English |
topic |
info:eu-repo/classification/ddc/551 |
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info:eu-repo/classification/ddc/551 Berg, G.M. Arrigo, K.R. Mills, M.M. Long, M.C. Bellerby, R. Strass, V. Savoye, N. Roettgers, R. Croot, P. Webb, A. Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
topic_facet |
info:eu-repo/classification/ddc/551 |
description |
Surface δ15NPON increased 3.92 ± 0.48‰ over the course of 20 days following additions of iron (Fe) to an eddy in close proximity to the Antarctic Polar Front in the Atlantic sector of the Southern Ocean. The change in δ15NPON was associated with an increase in the >20 μm size fraction, leading to a maximal difference of 6.23‰ between the >20 μm and <20 μm size fractions. Surface δ13CPOC increased 1.18 ± 0.31‰ over the same period. After a decrease in particulate organic matter in the surface layer, a second phytoplankton community developed that accumulated less biomass, had a slower growth rate and was characterized by an offset of 1.56‰ in δ13CPOC relative to the first community. During growth of the second community, surface δ13CPOC further increased 0.83 ± 0.13‰. Here we speculate on ways that carboxylation, nitrogen assimilation, substrate pool enrichment and community composition may have contributed to the gradual increase in δ13CPOC associated with phytoplankton biomass accumulation, as well as the systematic offset in δ13CPOC between the two phytoplankton communities. |
format |
Article in Journal/Newspaper |
author |
Berg, G.M. Arrigo, K.R. Mills, M.M. Long, M.C. Bellerby, R. Strass, V. Savoye, N. Roettgers, R. Croot, P. Webb, A. |
author_facet |
Berg, G.M. Arrigo, K.R. Mills, M.M. Long, M.C. Bellerby, R. Strass, V. Savoye, N. Roettgers, R. Croot, P. Webb, A. |
author_sort |
Berg, G.M. |
title |
Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
title_short |
Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
title_full |
Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
title_fullStr |
Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
title_full_unstemmed |
Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean |
title_sort |
variation in particulate c and n isotope composition following iron fertilization in two successive phytoplankton communities in the southern ocean |
publisher |
AGU |
publishDate |
2011 |
url |
https://publications.hereon.de/id/28828 https://publications.hzg.de/id/28828 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/berg_28828.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
issn:0886-6236 Berg, G.M.; Arrigo, K.R.; Mills, M.M.; Long, M.C.; Bellerby, R.; Strass, V.; Savoye, N.; Roettgers, R.; Croot, P.; Webb, A.: Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean. In: Global Biogeochemical Cycles. Vol. 25 (2011) 3, GB 3013. (DOI:10.1029/2010GB003824) |
op_relation |
http://dx.doi.org/10.1029/2010GB003824 urn:issn:0886-6236 https://publications.hereon.de/id/28828 https://publications.hzg.de/id/28828 http://www.hzg.de/imperia/md/content/gkss/zentrale_einrichtungen/bibliothek/journals/2011/berg_28828.pdf |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_gruen |
op_doi |
https://doi.org/10.1029/2010GB003824 |
container_title |
Global Biogeochemical Cycles |
container_volume |
25 |
container_issue |
3 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1768377631229607936 |