Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX)
Surface active substances (SAS) in the water column were measured by voltammetry using the electrochemical probe o-nitrophenol (ONP) during EIFEX, a mesoscale open ocean iron enrichment experiment in the Southern Ocean. SAS levels were low throughout the experiment (<0.005 – 0.03 mg L−1 Triton X-...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , |
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Language: | English |
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AGU (American Geophysical Union)
2007
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Online Access: | https://oceanrep.geomar.de/id/eprint/3721/ https://oceanrep.geomar.de/id/eprint/3721/1/Croot_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL028080 |
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ftoceanrep:oai:oceanrep.geomar.de:3721 2024-09-30T14:44:00+00:00 Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) Croot, Peter Passow, U. Assmy, P. Jansen, S. Strass, V. H. 2007 text https://oceanrep.geomar.de/id/eprint/3721/ https://oceanrep.geomar.de/id/eprint/3721/1/Croot_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL028080 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/3721/1/Croot_et_al-2007-Geophysical_Research_Letters.pdf Croot, P., Passow, U., Assmy, P., Jansen, S. and Strass, V. H. (2007) Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX). Open Access Geophysical Research Letters, 34 (L03612). DOI 10.1029/2006GL028080 <https://doi.org/10.1029/2006GL028080>. doi:10.1029/2006GL028080 info:eu-repo/semantics/openAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.1029/2006GL028080 2024-09-04T05:04:40Z Surface active substances (SAS) in the water column were measured by voltammetry using the electrochemical probe o-nitrophenol (ONP) during EIFEX, a mesoscale open ocean iron enrichment experiment in the Southern Ocean. SAS levels were low throughout the experiment (<0.005 – 0.03 mg L−1 Triton X-100 equivalents). Initially SAS was extremely low in the photic zone, but as the phytoplankton bloom developed concentrations markedly increased throughout the upper 100 m (∼0.02 mg L−1 Triton X-100 equivalents). Highest concentrations of SAS (>0.02 mg L−1 Triton X-100 equivalents) were found at the end of the bloom particularly at density discontinuities where organic material may accumulate. Exudates from diatoms appeared to be the major source of SAS during EIFEX, either from direct extracellular release or in the action of being grazed upon by zooplankton. Article in Journal/Newspaper Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Triton ENVELOPE(-55.615,-55.615,49.517,49.517) Geophysical Research Letters 34 3 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Surface active substances (SAS) in the water column were measured by voltammetry using the electrochemical probe o-nitrophenol (ONP) during EIFEX, a mesoscale open ocean iron enrichment experiment in the Southern Ocean. SAS levels were low throughout the experiment (<0.005 – 0.03 mg L−1 Triton X-100 equivalents). Initially SAS was extremely low in the photic zone, but as the phytoplankton bloom developed concentrations markedly increased throughout the upper 100 m (∼0.02 mg L−1 Triton X-100 equivalents). Highest concentrations of SAS (>0.02 mg L−1 Triton X-100 equivalents) were found at the end of the bloom particularly at density discontinuities where organic material may accumulate. Exudates from diatoms appeared to be the major source of SAS during EIFEX, either from direct extracellular release or in the action of being grazed upon by zooplankton. |
format |
Article in Journal/Newspaper |
author |
Croot, Peter Passow, U. Assmy, P. Jansen, S. Strass, V. H. |
spellingShingle |
Croot, Peter Passow, U. Assmy, P. Jansen, S. Strass, V. H. Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
author_facet |
Croot, Peter Passow, U. Assmy, P. Jansen, S. Strass, V. H. |
author_sort |
Croot, Peter |
title |
Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
title_short |
Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
title_full |
Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
title_fullStr |
Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
title_full_unstemmed |
Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX) |
title_sort |
surface active substances in the upper water column during a southern ocean iron fertilization experiment (eifex) |
publisher |
AGU (American Geophysical Union) |
publishDate |
2007 |
url |
https://oceanrep.geomar.de/id/eprint/3721/ https://oceanrep.geomar.de/id/eprint/3721/1/Croot_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2006GL028080 |
long_lat |
ENVELOPE(-55.615,-55.615,49.517,49.517) |
geographic |
Southern Ocean Triton |
geographic_facet |
Southern Ocean Triton |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/3721/1/Croot_et_al-2007-Geophysical_Research_Letters.pdf Croot, P., Passow, U., Assmy, P., Jansen, S. and Strass, V. H. (2007) Surface active substances in the upper water column during a Southern Ocean Iron Fertilization Experiment (EIFEX). Open Access Geophysical Research Letters, 34 (L03612). DOI 10.1029/2006GL028080 <https://doi.org/10.1029/2006GL028080>. doi:10.1029/2006GL028080 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2006GL028080 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
3 |
_version_ |
1811645533894213632 |