Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol
During the European Iron Fertilisation Experiment (EIFEX), performed in the Southern Ocean, we investigated the reactions of different phytoplankton size classes to iron fertilization, applying measurements of size fractionated pigments, particulate organic matter, microscopy, and flow cytometry. Ch...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.418.7551 2023-05-15T18:25:05+02:00 Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol Linn J. Hoffmann Ilka Peeken Karin Lochte Marcel Veldhuis The Pennsylvania State University CiteSeerX Archives 2006 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.7551 http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.7551 http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf text 2006 ftciteseerx 2016-01-08T03:50:15Z During the European Iron Fertilisation Experiment (EIFEX), performed in the Southern Ocean, we investigated the reactions of different phytoplankton size classes to iron fertilization, applying measurements of size fractionated pigments, particulate organic matter, microscopy, and flow cytometry. Chlorophyll a (Chl a) concentrations at 20-m depth increased more than fivefold following fertilization through day 26, while concentrations of particulate organic carbon (POC), nitrogen (PON), and phosphorus (POP) roughly doubled through day 29. Concentrations of Chl a and particulate organic matter decreased toward the end of the experiment, indicating the demise of the iron-induced phytoplankton bloom. Despite a decrease in total diatom biomass at the end of the experiment, biogenic particulate silicate (bPSi) concentrations increased steadily due to a relative increase of heavily silicified diatoms. Although diatoms.20 mm were the main beneficiaries of iron fertilization, the growth of small diatoms (2–8 mm) was also enhanced, leading to a shift from a haptophyte- to a diatom-dominated community in this size fraction. The total biomass had lower than Redfield C: N, N: P, and C: P ratios but did not show significant trends after iron fertilization. This concealed various alterations in the elemental composition of the different size fractions. The microplankton (.20 mm) showed decreasing C: N and increasing N: P and C: P ratios, possibly caused by increased N uptake and the consumption of cellular P pools. Text Southern Ocean Unknown Southern Ocean |
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English |
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During the European Iron Fertilisation Experiment (EIFEX), performed in the Southern Ocean, we investigated the reactions of different phytoplankton size classes to iron fertilization, applying measurements of size fractionated pigments, particulate organic matter, microscopy, and flow cytometry. Chlorophyll a (Chl a) concentrations at 20-m depth increased more than fivefold following fertilization through day 26, while concentrations of particulate organic carbon (POC), nitrogen (PON), and phosphorus (POP) roughly doubled through day 29. Concentrations of Chl a and particulate organic matter decreased toward the end of the experiment, indicating the demise of the iron-induced phytoplankton bloom. Despite a decrease in total diatom biomass at the end of the experiment, biogenic particulate silicate (bPSi) concentrations increased steadily due to a relative increase of heavily silicified diatoms. Although diatoms.20 mm were the main beneficiaries of iron fertilization, the growth of small diatoms (2–8 mm) was also enhanced, leading to a shift from a haptophyte- to a diatom-dominated community in this size fraction. The total biomass had lower than Redfield C: N, N: P, and C: P ratios but did not show significant trends after iron fertilization. This concealed various alterations in the elemental composition of the different size fractions. The microplankton (.20 mm) showed decreasing C: N and increasing N: P and C: P ratios, possibly caused by increased N uptake and the consumption of cellular P pools. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Linn J. Hoffmann Ilka Peeken Karin Lochte Marcel Veldhuis |
spellingShingle |
Linn J. Hoffmann Ilka Peeken Karin Lochte Marcel Veldhuis Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
author_facet |
Linn J. Hoffmann Ilka Peeken Karin Lochte Marcel Veldhuis |
author_sort |
Linn J. Hoffmann |
title |
Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
title_short |
Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
title_full |
Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
title_fullStr |
Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
title_full_unstemmed |
Different reactions of Southern Ocean phytoplankton size classes to iron fertilization, Limnol |
title_sort |
different reactions of southern ocean phytoplankton size classes to iron fertilization, limnol |
publishDate |
2006 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.7551 http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.7551 http://www.aslo.org/lo/toc/vol_51/issue_3/1217.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766206278703513600 |