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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.833642 2023-05-15T18:25:09+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 Nöthig, Eva-Maria MEDIAN LATITUDE: -47.924523 * MEDIAN LONGITUDE: -15.228831 * SOUTH-BOUND LATITUDE: -48.796000 * WEST-BOUND LONGITUDE: -16.002700 * NORTH-BOUND LATITUDE: -47.300000 * EAST-BOUND LONGITUDE: -12.979000 * DATE/TIME START: 2009-01-25T00:00:00 * DATE/TIME END: 2009-03-08T00:00:00 2014-06-26 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.833642 https://doi.org/10.1594/PANGAEA.833642 en eng PANGAEA Schulz, Isabelle (2013): Mechanisms determining species succession and dominance during an iron-induced phytoplankton bloom in the Southern Ocean (LOHAFEX). PhD Thesis, University of Bremen, Germany, 292 pp, urn:nbn:de:gbv:46-00103521-10 https://doi.pangaea.de/10.1594/PANGAEA.833642 https://doi.org/10.1594/PANGAEA.833642 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ebersbach, Friederike; Assmy, Philipp; Martin, Patrick; Schulz, Isabelle; Wolzenburg, Sina; Nöthig, Eva-Maria (2014): Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 89, 94-103, https://doi.org/10.1016/j.dsr.2014.04.007 Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.833642 https://doi.org/10.1016/j.dsr.2014.04.007 2023-01-20T07:33:18Z 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/day, 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. Dataset Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Austral Southern Ocean ENVELOPE(-16.002700,-12.979000,-47.300000,-48.796000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
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/day, 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 |
Dataset |
author |
Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Nöthig, Eva-Maria |
spellingShingle |
Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Nöthig, Eva-Maria Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean |
author_facet |
Ebersbach, Friederike Assmy, Philipp Martin, Patrick Schulz, Isabelle Wolzenburg, Sina Nöthig, 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 |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.833642 https://doi.org/10.1594/PANGAEA.833642 |
op_coverage |
MEDIAN LATITUDE: -47.924523 * MEDIAN LONGITUDE: -15.228831 * SOUTH-BOUND LATITUDE: -48.796000 * WEST-BOUND LONGITUDE: -16.002700 * NORTH-BOUND LATITUDE: -47.300000 * EAST-BOUND LONGITUDE: -12.979000 * DATE/TIME START: 2009-01-25T00:00:00 * DATE/TIME END: 2009-03-08T00:00:00 |
long_lat |
ENVELOPE(-16.002700,-12.979000,-47.300000,-48.796000) |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Supplement to: Ebersbach, Friederike; Assmy, Philipp; Martin, Patrick; Schulz, Isabelle; Wolzenburg, Sina; Nöthig, Eva-Maria (2014): Particle flux characterisation and sedimentation patterns of protistan plankton during the iron fertilisation experiment LOHAFEX in the Southern Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 89, 94-103, https://doi.org/10.1016/j.dsr.2014.04.007 |
op_relation |
Schulz, Isabelle (2013): Mechanisms determining species succession and dominance during an iron-induced phytoplankton bloom in the Southern Ocean (LOHAFEX). PhD Thesis, University of Bremen, Germany, 292 pp, urn:nbn:de:gbv:46-00103521-10 https://doi.pangaea.de/10.1594/PANGAEA.833642 https://doi.org/10.1594/PANGAEA.833642 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.833642 https://doi.org/10.1016/j.dsr.2014.04.007 |
_version_ |
1766206391405510656 |