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Bauerfeind, Eduard; Nöthig, Eva-Maria; Beszczynska, Agnieszka; Fahl, Kirsten; Kaleschke, Lars; Kreker, Kathrin; Klages, Michael; Soltwedel, Thomas; Lorenzen, Christiane; Wegner, Jan (2009): Biogenic particle and biomarker flux from a mooring time-series at AWI HAUSGARTEN. PANGAEA, https://doi.org/10.1594/PANGAEA.714845, Supplement to: Bauerfeind, E et al. (2009): Particle sedimentation patterns in the eastern Fram Strait during 2000-2005: Results from the Arctic long-term observatory HAUSGARTEN. Deep Sea Research Part I: Oceanographic Research Papers, 56(9), 1471-1487, https://doi.org/10.1016/j.dsr.2009.04.011

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Abstract:
Since 2000 long-term measurements of vertical particle flux have been performed with moored sediment traps at the long-term observatory HAUSGARTEN in the eastern Fram Strait (79°N/4°E). The study area, which is seasonally covered with ice, is located in the confluence zone of the northward flowing warm saline Atlantic water with cold, low salinity water masses of Arctic origin. Current projections suggest that this area is particularly vulnerable to global warming. Total matter fluxes and components thereof (carbonate, particulate organic carbon and nitrogen, biogenic silica, biomarkers) revealed a bimodal seasonal pattern showing elevated sedimentation rates during May/June and August/September. Annual total matter flux (dry weight, DW) at ~ 300 m depth varied between 13 and 32 g/m**2/a during 2000 and 2005. Of this total flux 6-13 % was due to CaCO3, 4-21 % to refractory particulate organic carbon (POC), and 3-8 % to biogenic particulate silica (bPSi). The annual flux of all biogenic components together was almost constant during the period studied (8.5-8.8 g/m**2/a), although this varied from 27 to 67 % of the total annual flux. The fraction was lowest in a year characterized by the longest duration of ice coverage (91 and 70 days for the calendar year and summer season, May-September, respectively). Biomarker analyses revealed that organic matter originating from marine sources was present in excess of terrigenious material in the sedimented matter throughout most of the study period. Fluxes of recognizable phyto- and protozooplankton cells amounted up to 60x106 m**2/d. Diatoms and coccolithophorids were the most abundant organisms. Diatoms, mainly pennate species, dominated during the first years of the investigation. A shift in the composition occurred during the last year when numbers of diatoms declined considerably, leading to a dominance of coccolithoporids. This was also reflected in a decrease in the sedimentation of bPSi. The sedimentation of biogenic matter, however, did not differ from the amount observed during the previous years. Among the larger organisms, pteropods at times contributed significantly to both the total matter and CaCO3, fluxes.
Funding:
Sixth Framework Programme (FP6), grant/award no. 511234: Hotspot Ecosystem Research on the Margins of European Seas
Coverage:
Median Latitude: 79.017264 * Median Longitude: 4.366430 * South-bound Latitude: 78.999160 * West-bound Longitude: 4.329500 * North-bound Latitude: 79.028330 * East-bound Longitude: 4.457330
Date/Time Start: 2000-08-31T00:00:00 * Date/Time End: 2005-05-31T00:00:00
Event(s):
FEVI1 (PS57/273-1, HGIV) * Latitude: 79.028330 * Longitude: 4.346660 * Date/Time Start: 2000-08-31T00:00:00 * Date/Time End: 2001-08-14T00:00:00 * Elevation: -2456.0 m * Location: North Greenland Sea * Campaign: ARK-XVI/2 (PS57) * Basis: Polarstern * Method/Device: Mooring (long time) (MOORY)
FEVI2 (PS59/101-1, HGIV) * Latitude: 79.025000 * Longitude: 4.355000 * Date/Time Start: 2001-04-14T00:00:00 * Date/Time End: 2002-04-14T00:00:00 * Elevation: -2482.0 m * Location: North Greenland Sea * Campaign: ARK-XVII/1 (PS59) * Basis: Polarstern * Method/Device: Mooring (long time) (MOORY)
FEVI3 (PS62/179-2, HGIV) * Latitude: 79.017330 * Longitude: 4.329500 * Date/Time Start: 2002-08-14T00:00:00 * Date/Time End: 2003-06-10T00:00:00 * Elevation: -2593.0 m * Location: North Greenland Sea * Campaign: ARK-XVIII/1 (PS62) * Basis: Polarstern * Method/Device: Mooring (long time) (MOORY)
Size:
10 datasets

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Datasets listed in this publication series

  1. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Biogenic particle flux at AWI HAUSGARTEN from mooring FEVI1. https://doi.org/10.1594/PANGAEA.714840
  2. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Flux of biomarkers at AWI HAUSGARTEN from mooring FEVI1. https://doi.org/10.1594/PANGAEA.690891
  3. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Biogenic particle flux at AWI HAUSGARTEN from mooring FEVI2. https://doi.org/10.1594/PANGAEA.714841
  4. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Flux of biomarkers at AWI HAUSGARTEN from mooring FEVI2. https://doi.org/10.1594/PANGAEA.690892
  5. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Biogenic particle flux at AWI HAUSGARTEN from mooring FEVI3 at 300 m. https://doi.org/10.1594/PANGAEA.714842
  6. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Flux of biomarkers at AWI HAUSGARTEN from mooring FEVI3. https://doi.org/10.1594/PANGAEA.690893
  7. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Biogenic particle flux at AWI HAUSGARTEN from mooring FEVI4. https://doi.org/10.1594/PANGAEA.714843
  8. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Flux of biomarkers at AWI HAUSGARTEN from mooring FEVI4. https://doi.org/10.1594/PANGAEA.690894
  9. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Biogenic particle flux at AWI HAUSGARTEN from mooring FEVI7. https://doi.org/10.1594/PANGAEA.714844
  10. Bauerfeind, E; Nöthig, E-M; Beszczynska, A et al. (2009): Flux of biomarkers at AWI HAUSGARTEN from mooring FEVI7. https://doi.org/10.1594/PANGAEA.690895