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Boetius, Antje; Lochte, Karin (2000): Phospholipids in sediments of the deep Arabian Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.787613, Supplement to: Boetius, A; Lochte, K (2000): Regional variation of total microbial biomass in sediments of the deep Arabian Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 47(1-2), 149-168, https://doi.org/10.1016/S0967-0645(99)00096-X

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Abstract:
Eight different sites from 2300 to 4420 m water depth in the Arabian Sea were sampled for a biochemical quantification of phospholipid concentrations in the sediments. This method serves as a measure of microbial biomass in marine sediments comprising all small-sized organisms, including bacteria, fungi, protozoa and metazoa. Phospholipid concentrations can be converted to carbon units as an estimate of total microbial biomass in the sediments. The average phospholipid concentrations in the surface sediments (0–1 cm) of the 4 abyssal sites ranged from 7 nmol cm?3 at the southern site (SAST, 10°N 65°E, 4425 m) to 29 nmol/cm**3 at the western site (WAST, 16°N 60°E, 4045 m). The high values detected at the abyssal station WAST exceeded those in the literature for other abyssal sites and were comparable to values from the upper continental slope of the NE-Atlantic and the Arctic. At the four continental slope sites in the Arabian Sea, average phospholipid concentrations ranged from 9 to 53 nmol/cm**3 with the maximum values at stations A (2314 m) and D (3142 m) close to the Omani coast. Records of particulate organic carbon flux to the deep sea are available for four of the investigated locations, allowing a test of the hypothesis that the standing stock of benthic microorganisms in the deep sea is controlled by substrate availability, i.e. particle sedimentation. Total microbial biomass in the surface sediments of the Arabian Sea was positively correlated with sedimentation rates, consistent with previous studies of other oceans. The use of the measurement of phospholipid concentrations as a proxy for input of particulate organic matter is discussed.
Coverage:
Median Latitude: 15.561182 * Median Longitude: 62.879811 * South-bound Latitude: 9.994000 * West-bound Longitude: 54.370833 * North-bound Latitude: 20.000333 * East-bound Longitude: 68.600500
Date/Time Start: 1995-03-08T18:35:00 * Date/Time End: 1995-10-21T02:26:00
Size:
22 datasets

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Datasets listed in this publication series

  1. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-01. https://doi.org/10.1594/PANGAEA.59115
  2. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-02. https://doi.org/10.1594/PANGAEA.59101
  3. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-04. https://doi.org/10.1594/PANGAEA.59116
  4. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-05. https://doi.org/10.1594/PANGAEA.59099
  5. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-06. https://doi.org/10.1594/PANGAEA.59117
  6. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-07. https://doi.org/10.1594/PANGAEA.59104
  7. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-08. https://doi.org/10.1594/PANGAEA.59118
  8. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-10. https://doi.org/10.1594/PANGAEA.59105
  9. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-10. https://doi.org/10.1594/PANGAEA.59119
  10. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-12. https://doi.org/10.1594/PANGAEA.59106
  11. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-12. https://doi.org/10.1594/PANGAEA.59120
  12. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-15. https://doi.org/10.1594/PANGAEA.59107
  13. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-16. https://doi.org/10.1594/PANGAEA.59121
  14. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-17. https://doi.org/10.1594/PANGAEA.59108
  15. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-18. https://doi.org/10.1594/PANGAEA.59122
  16. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-21. https://doi.org/10.1594/PANGAEA.59123
  17. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-22. https://doi.org/10.1594/PANGAEA.59124
  18. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-24. https://doi.org/10.1594/PANGAEA.59125
  19. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-26. https://doi.org/10.1594/PANGAEA.59126
  20. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-29. https://doi.org/10.1594/PANGAEA.59127
  21. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-31. https://doi.org/10.1594/PANGAEA.59128
  22. Boetius, A; Lochte, K (2000): Phospholipids in sediment core M33/1_MC-34. https://doi.org/10.1594/PANGAEA.59129