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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. PANGAEA, https://doi.org/10.1594/PANGAEA.833642, Supplement to: Ebersbach, F et al. (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

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Abstract:
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.
Related to:
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
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
Size:
10 datasets

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Datasets listed in this publication series

  1. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (S 1) Particle types found in polyacrylamide gels during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833639
  2. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (S 2) Image of entire polyacrylamide gel. https://doi.org/10.1594/PANGAEA.833640
  3. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (SI Table 1) Plankton groups present in the PELAGRA traps during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833641
  4. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (SI Table 2) POC flux at 450 m of the three diatom species that contributed most to the flux during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833634
  5. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (SI Table 3) POC flux of tintinnid ciliates in PELAGRA traps during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833637
  6. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (SI Table 4) C flux of full, and C flux equivalent of empty and broken foraminifera found in the PELAGRA traps during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833638
  7. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (Table 1) PELAGRA trap deployments during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833517
  8. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (Table 2) Protist carbon flux and surface standing stock of diatoms, flagellates, coccoid cells and dinoflagellates during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833519
  9. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (Table 3) Integrated TEP concentrations in the water column during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833629
  10. Ebersbach, F; Assmy, P; Martin, P et al. (2014): (Table 3) TEP concentrations in the water column during POLARSTERN cruise ANT-XXV/3 (LOHAFEX). https://doi.org/10.1594/PANGAEA.833628