Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean
The taxonomic composition and types of particles comprising the downward particle flux were examined during the mesoscale artificial iron fertilisation experiment LOHAFEX. The experiment was conducted in low-silicate waters of the Atlantic Sector of the Southern Ocean during austral summer (January-...
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fttriple:oai:gotriple.eu:10670/1.yv94t8 2023-05-15T18:25:02+02:00 Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Noethig, Eva-maria https://doi.org/10.1016/j.dsr.2014.04.007 https://archimer.ifremer.fr/doc/00290/40121/39348.pdf https://archimer.ifremer.fr/doc/00290/40121/39349.zip en eng Pergamon-elsevier Science Ltd doi:10.1016/j.dsr.2014.04.007 10670/1.yv94t8 https://archimer.ifremer.fr/doc/00290/40121/39348.pdf https://archimer.ifremer.fr/doc/00290/40121/39349.zip lic_creative-commons other Archimer, archive institutionnelle de l'Ifremer Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2014-07 , Vol. 89 , P. 94-103 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.dsr.2014.04.007 2023-01-22T17:19:18Z The taxonomic composition and types of particles comprising the downward particle flux were examined during the mesoscale artificial iron fertilisation experiment LOHAFEX. The experiment was conducted in low-silicate waters of the Atlantic Sector of the Southern Ocean during austral summer (January-March 2009), and induced a bloom dominated by small flagellates. Downward particle flux was low throughout the experiment, and not enhanced by addition of iron; neutrally buoyant sediment traps contained mostly faecal pellets and faecal material apparently reprocessed by mesozooplankton. TEP fluxes were low, <= 5 mg GX eq. m(-2) d(-1), and a few phytodetrital aggregates were found in the sediment traps. Only a few per cent of the POC flux was found in the traps consisting of intact protist plankton, although remains of taxa with hard body parts (diatoms, tintinnids, thecate dinoflagellates and foraminifera) were numerous, far more so than intact specimens of these taxa. Nevertheless, many small flagellates and coccoid cells, belonging to the pico- and nanoplankton, were found in the traps, and these small, soft-bodied cells probably contributed the majority of downward POC flux via mesozooplankton grazing and faecal pellet export. TEP likely played an important role by aggregating these small cells, and making them more readily available to mesozooplankton grazers. Text Southern Ocean Unknown Austral Southern Ocean Deep Sea Research Part I: Oceanographic Research Papers 89 94 103 |
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geo envir Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Noethig, Eva-maria Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
topic_facet |
geo envir |
description |
The taxonomic composition and types of particles comprising the downward particle flux were examined during the mesoscale artificial iron fertilisation experiment LOHAFEX. The experiment was conducted in low-silicate waters of the Atlantic Sector of the Southern Ocean during austral summer (January-March 2009), and induced a bloom dominated by small flagellates. Downward particle flux was low throughout the experiment, and not enhanced by addition of iron; neutrally buoyant sediment traps contained mostly faecal pellets and faecal material apparently reprocessed by mesozooplankton. TEP fluxes were low, <= 5 mg GX eq. m(-2) d(-1), and a few phytodetrital aggregates were found in the sediment traps. Only a few per cent of the POC flux was found in the traps consisting of intact protist plankton, although remains of taxa with hard body parts (diatoms, tintinnids, thecate dinoflagellates and foraminifera) were numerous, far more so than intact specimens of these taxa. Nevertheless, many small flagellates and coccoid cells, belonging to the pico- and nanoplankton, were found in the traps, and these small, soft-bodied cells probably contributed the majority of downward POC flux via mesozooplankton grazing and faecal pellet export. TEP likely played an important role by aggregating these small cells, and making them more readily available to mesozooplankton grazers. |
format |
Text |
author |
Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Noethig, Eva-maria |
author_facet |
Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Noethig, Eva-maria |
author_sort |
Ebersbach, Friederike |
title |
Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
title_short |
Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
title_full |
Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
title_fullStr |
Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
title_full_unstemmed |
Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
title_sort |
particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment lohafex in the southern ocean |
publisher |
Pergamon-elsevier Science Ltd |
url |
https://doi.org/10.1016/j.dsr.2014.04.007 https://archimer.ifremer.fr/doc/00290/40121/39348.pdf https://archimer.ifremer.fr/doc/00290/40121/39349.zip |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Archimer, archive institutionnelle de l'Ifremer Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2014-07 , Vol. 89 , P. 94-103 |
op_relation |
doi:10.1016/j.dsr.2014.04.007 10670/1.yv94t8 https://archimer.ifremer.fr/doc/00290/40121/39348.pdf https://archimer.ifremer.fr/doc/00290/40121/39349.zip |
op_rights |
lic_creative-commons other |
op_doi |
https://doi.org/10.1016/j.dsr.2014.04.007 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
89 |
container_start_page |
94 |
op_container_end_page |
103 |
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1766206185783951360 |