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Soltwedel, Thomas; Schewe, Ingo (1998): Activity and biomass of small benthic biota in the central Arctic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.738504, Supplement to: Soltwedel, T; Schewe, I (1998): Activity and biomass of the small benthic biota in the Central Arctic Ocean. Polar Biology, 19(1), 52-62, https://doi.org/10.1007/s003000050215

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Abstract:
Sediment samples collected during the expedition “Arctic Ocean '96” with the Swedish ice-breaker ODEN were investigated to estimate for the first time heterotrophic activity and total microbial biomass (size range from bacteria to small metazoans) from the perennially ice-covered central Arctic Ocean. Benthic activities and biomass were evaluated analysing a series of biogenic sediment compounds (i.e. bacterial exoenzymes, total adenylates, DNA, phospholipids, particulate proteins). In contrast to the very time-consuming sorting, enumeration and weight determination, analyses of biochemical sediment parameters may represent a useful method for obtaining rapid information on the ecological situation in a given benthic system. Bacterial cell numbers and biomass were estimated for comparison with biochemically determined biomass data, to evaluate the contribution of the bacterial biomass to the total microbial biomass. It appeared that bacterial biomass made up only 8–31% (average of all stations = 20%) of the total microbial biomass, suggesting a large fraction of other small infaunal organisms within the sediment samples (most probably fungi, yeasts, protozoans such as flagellates, ciliates or amoebae, as well as a fraction of small metazoans). Activity and biomass values determined within this study were generally extremely low, and often even slightly lower than those given for other deep oceanic regions, thus characterizing the seafloor of the central Arctic Ocean as a “benthic desert”. Nevertheless, some clear trends in the data could be found, e.g. generally sharply decreasing values within the sediment column, a vague tendency for declining values with increasing water depth of sampling stations, and also differences between various Arctic deep-sea regions.
Coverage:
Median Latitude: 86.826183 * Median Longitude: 128.775998 * South-bound Latitude: 85.366700 * West-bound Longitude: 12.150000 * North-bound Latitude: 89.916700 * East-bound Longitude: 179.966700
Date/Time Start: 1996-07-29T00:00:00 * Date/Time End: 1996-09-14T00:00:00
Event(s):
OD96_MUC1 * Latitude: 85.565000 * Longitude: 72.248300 * Date/Time: 1996-07-29T00:00:00 * Elevation: -3792.0 m * Location: Arctic Ocean * Campaign: ODEN-96 * Basis: Oden * Method/Device: MultiCorer (MUC)
OD96_MUC10 * Latitude: 85.366700 * Longitude: 149.275000 * Date/Time: 1996-08-29T00:00:00 * Elevation: -1055.0 m * Location: Arctic Ocean * Campaign: ODEN-96 * Basis: Oden * Method/Device: MultiCorer (MUC)
OD96_MUC11 * Latitude: 85.545000 * Longitude: 156.498300 * Date/Time: 1996-08-31T00:00:00 * Elevation: -2382.0 m * Location: Arctic Ocean * Campaign: ODEN-96 * Basis: Oden * Method/Device: MultiCorer (MUC)
Size:
20 datasets

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Datasets listed in this publication series

  1. Soltwedel, T; Schewe, I (1998): (Table 2) Biogenic sediment compounds and bacterial abundances of surface sediments in the central Arctic Ocean. https://doi.org/10.1594/PANGAEA.738503
  2. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC1. https://doi.org/10.1594/PANGAEA.358564
  3. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC10. https://doi.org/10.1594/PANGAEA.358554
  4. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC11. https://doi.org/10.1594/PANGAEA.358555
  5. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC12. https://doi.org/10.1594/PANGAEA.358556
  6. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC13. https://doi.org/10.1594/PANGAEA.358557
  7. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC14. https://doi.org/10.1594/PANGAEA.358558
  8. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC15. https://doi.org/10.1594/PANGAEA.358559
  9. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC16. https://doi.org/10.1594/PANGAEA.358560
  10. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC17. https://doi.org/10.1594/PANGAEA.358561
  11. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC18. https://doi.org/10.1594/PANGAEA.358562
  12. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC19. https://doi.org/10.1594/PANGAEA.358563
  13. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC2. https://doi.org/10.1594/PANGAEA.358565
  14. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC3. https://doi.org/10.1594/PANGAEA.358566
  15. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC4. https://doi.org/10.1594/PANGAEA.358567
  16. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC5. https://doi.org/10.1594/PANGAEA.358568
  17. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC6. https://doi.org/10.1594/PANGAEA.358569
  18. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC7. https://doi.org/10.1594/PANGAEA.358570
  19. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC8. https://doi.org/10.1594/PANGAEA.358571
  20. Soltwedel, T; Schewe, I (1998): Adenylates analysed in multi corer sediment profile OD96_MUC9. https://doi.org/10.1594/PANGAEA.358572