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Werner, Iris (2005): Water chemistry, and abundance and carbon biomass of under-ice fauna during POLARSTERN cruise ARK-XIX/1 to the Storfjord area in 2003 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.849171, Supplement to: Werner, I (2005): Living conditions, abundance and biomass of under-ice fauna in the Storfjord area (western Barents Sea, Arctic) in late winter (March 2003). Polar Biology, 28(4), 311-318, https://doi.org/10.1007/s00300-004-0678-1

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Abstract:
The under-ice habitat and fauna were studied during a typical winter situation at three stations in the western Barents Sea. Dense pack ice (7-10/10) prevailed and ice thickness ranged over <0.1-1.6 m covered by <0.1-0.6 m of snow. Air temperatures ranged between -1.8 and -27.5°C. The ice undersides were level, white and smooth. Temperature and salinity profiles in the under-ice water (0-5 m depth) were not stratified (T=-1.9 to -2.0°C and S=34.2-34.7). Concentrations of inorganic nutrients were high and concentrations of algal pigments were very low (0.02 µg chlorophyll a/l), indicating the state of biological winter. Contents of particulate organic carbon and nitrogen ranged over 84.2-241.3 and 5.3-16.4 µg/l, respectively, the C/N ratio over 11.2-15.5 pointing to the dominance of detritus in the under-ice water. Abundances of amphipods at the ice underside were lower than in other seasons: 0-1.8 ind/m**2 for Apherusa glacialis, 0-0.7 ind/m**2 for Onisimus spp., and 0-0.8 ind/m**2 for Gammarus wilkitzkii. A total of 22 metazoan taxa were found in the under-ice water, with copepods as the most diverse and numerous group. Total abundances ranged over 181-2,487 ind/m**3 (biomass: 70-2,439 µg C/m**3), showing lower values than in spring, summer and autumn. The dominant species was the calanoid copepod Pseudocalanus minutus (34-1,485 ind/m**3), contributing 19-65% to total abundances, followed by copepod nauplii (85-548 ind/m**3) and the cyclopoid copepod Oithona similis (44-262 ind/m**3). Sympagic (ice-associated) organisms occurred only rarely in the under-ice water layer.
Project(s):
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: 76.767460 * Median Longitude: 21.723133 * South-bound Latitude: 76.294900 * West-bound Longitude: 20.211400 * North-bound Latitude: 77.550100 * East-bound Longitude: 23.365800
Date/Time Start: 2003-03-12T08:20:00 * Date/Time End: 2003-03-23T08:21:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Werner, I (2005): (Table 3) Abundances of under-ice fauna (>50 µm) during POLARSTERN cruise ARK-XIX/1 to the Storfjord area in 2003. https://doi.org/10.1594/PANGAEA.849168
  2. Werner, I (2005): (Table 4) Carbon biomass of dominant under-ice fauna (>50 µm) during POLARSTERN cruise ARK-XIX/1 to the Storfjord area in 2003. https://doi.org/10.1594/PANGAEA.849170
  3. Werner, I (2005): (Table 1) Ice cover and thickness at three stations during POLARSTERN cruise ARK-XIX/1 to the Storfjord area in 2003. https://doi.org/10.1594/PANGAEA.849166
  4. Werner, I (2005): (Table 2) Algal pigments, POC, PON and inorganic nutrients in under-ice water during POLARSTERN cruise ARK-XIX/1 to the Storfjord area in 2003. https://doi.org/10.1594/PANGAEA.849167