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Grünke, Stefanie; Felden, Janine; Lichtschlag, Anna; Girnth, Anne-Christin; de Beer, Dirk; Wenzhöfer, Frank; Boetius, Antje (2011): Niche differentiation among mat-forming, sulfide-oxidizing bacteria in chemosynthetic ecosystems of the Nile Deep Sea Fan (Eastern Mediterranean Sea). PANGAEA, https://doi.org/10.1594/PANGAEA.810017, Supplement to: Grünke, S et al. (2011): Niche differentiation among mat-forming, sulfide-oxidizing bacteria at cold seeps of the Nile Deep Sea Fan (Eastern Mediterranean Sea). Geobiology, 9(4), 330-348, https://doi.org/10.1111/j.1472-4669.2011.00281.x

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Abstract:
Sulfidic muds of cold seeps on the Nile Deep Sea Fan are populated by different types of mat-forming sulfide-oxidizing bacteria. The predominant sulfide oxidizers of three different mats were identified by microscopic and phylogenetic analyses as (i) Arcobacter species producing cotton-ball-like sulfur precipitates, (ii) large filamentous sulfur bacteria including Beggiatoa species, or (iii) single, spherical cells resembling Thiomargarita species. High resolution in situ microprofiles revealed different geochemical settings selecting for different mat types. Arcobacter mats occurred where oxygen and sulfide overlapped at the bottom water interface. Filamentous sulfide oxidizers were associated with non-overlapping, steep gradients of oxygen and sulfide. A dense population of Thiomargarita was favored by temporarily changing supplies of oxygen and sulfide. These results indicate that the decisive factors in selecting for different mat-forming bacteria within one deep-sea province are spatial or temporal variations in energy supply. Furthermore, the occurrence of Arcobacter spp.-related 16S rRNA genes in the sediments below all three types of mats, as well as on top of brine lakes of the Nile Deep Sea Fan, indicates that this group of sulfide oxidizers can switch between different life modes depending on the geobiochemical habitat setting.
Coverage:
Median Latitude: 32.521045 * Median Longitude: 30.454036 * South-bound Latitude: 32.367680 * West-bound Longitude: 30.351830 * North-bound Latitude: 32.534840 * East-bound Longitude: 31.711040
Date/Time Start: 2006-10-25T00:47:00 * Date/Time End: 2006-11-19T17:20:00
Size:
14 datasets

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Datasets listed in this publication series

  1. Felden, J; Boetius, A (2011): Prokaryotic abundance, sulphate reduction and methane oxidation rates of cold seep sediments measured at station M70/2b_841_PUC-12. https://doi.org/10.1594/PANGAEA.770244
  2. Felden, J; Boetius, A (2011): Sulphate reduction and methane oxidation rates of cold seep sediments measured at station M70/2a_773_PUC-14. https://doi.org/10.1594/PANGAEA.770210
  3. Felden, J; Boetius, A (2011): Sulphate reduction and methane oxidation rates of cold seep sediments measured at station M70/2b_841_PUC-41. https://doi.org/10.1594/PANGAEA.770245
  4. Felden, J; Boetius, A (2011): Sulphate reduction and methane oxidation rates of cold seep sediments measured at station M70/2b_841_PUC-68. https://doi.org/10.1594/PANGAEA.770246
  5. Felden, J; Boetius, A (2011): Sulphate reduction rates of cold seep sediments measured at station M70/2a_770_PUC-12. https://doi.org/10.1594/PANGAEA.770207
  6. Felden, J; Boetius, A (2011): Sulphate reduction rates of cold seep sediments measured at station M70/2a_773_PUC-39. https://doi.org/10.1594/PANGAEA.770214
  7. Felden, J; Boetius, A (2011): Sulphate reduction rates of cold seep sediments measured at station M70/2a_773_PUC-68. https://doi.org/10.1594/PANGAEA.770215
  8. Grünke, S; Boetius, A (2011): Relative abundance of prokaryotes in bacterial mat covered cold seep sediments of the Nile Deep Sea Fan. https://doi.org/10.1594/PANGAEA.818003
  9. Lichtschlag, A; Boetius, A; de Beer, D (2011): Elemental sulfur concentration in various cold seep sediments of the Nile Deep Sea Fan. https://doi.org/10.1594/PANGAEA.817464
  10. Lichtschlag, A; Boetius, A; de Beer, D (2011): High resolution in situ microsensor measurements of cold seep sediments measured at station M70/2b_841_PROF-1. https://doi.org/10.1594/PANGAEA.817369
  11. Lichtschlag, A; Boetius, A; de Beer, D (2011): High resolution in situ microsensor measurements of cold seep sediments measured at station M70/2b_841_PROF-2. https://doi.org/10.1594/PANGAEA.817371
  12. Lichtschlag, A; Boetius, A; de Beer, D (2011): High resolution in situ microsensor measurements of cold seep sediments measured at station M70/2b_841_PROF-3. https://doi.org/10.1594/PANGAEA.817372
  13. Lichtschlag, A; Boetius, A; de Beer, D (2010): Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_773_PUC-52. https://doi.org/10.1594/PANGAEA.738352
  14. Lichtschlag, A; Boetius, A; de Beer, D (2010): Pore water geochemistry of Nile Deep Sea Fan seep sediments measured during the BIONIL expedition in 2006 at station M70/2a_784_PUC-9. https://doi.org/10.1594/PANGAEA.738353