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Felden, Janine; Lichtschlag, Anna; Wenzhöfer, Frank; de Beer, Dirk; Feseker, Tomas; Pop Ristova, Petra; de Lange, Gert Jan; Boetius, Antje (2013): Limitations of microbial hydrocarbon degradation at the Amon Mud Volcano (Nile Deep Sea Fan). PANGAEA, https://doi.org/10.1594/PANGAEA.804779, Supplement to: Felden, J et al. (2013): Limitations of microbial hydrocarbon degradation at the Amon mud volcano (Nile deep-sea fan). Biogeosciences, 10, 3269-3283, https://doi.org/10.5194/bg-10-3269-2013

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Abstract:
The Amon mud volcano (MV), located at 1250 m water depth on the Nile Deep Sea Fan, is known for its active emission of methane and non-methane hydrocarbons into the hydrosphere. Previous investigations showed a low efficiency of hydrocarbon-degrading anaerobic microbial communities inhabiting the Amon MV center in the presence of sulphate and hydrocarbons in the seeping subsurface fluids. By comparing spatial and temporal patterns of in situ biogeochemical fluxes, temperature gradients, pore water composition and microbial activities over three years, we investigated why the activity of anaerobic hydrocarbon degraders can be low despite high energy supplies. We found that the central dome of the Amon MV, as well as a lateral mud flow at its base, showed signs of recent exposure of hot subsurface muds lacking active hydrocarbon degrading communities. In these highly disturbed areas, anaerobic degradation of methane was less than 2% of the methane flux. Rather high oxygen consumption rates compared to low sulphide production suggest a faster development of more rapidly growing aerobic hydrocarbon degraders in highly disturbed areas. In contrast, the more stabilized muds surrounding the central gas and fluid conduits hosted active anaerobic hydrocarbon-degrading microbial communities. Furthermore, within three years, cell numbers and hydrocarbon degrading activity increased at the gas-seeping sites. The low microbial activity in the hydrocarbon-vented areas of Amon mud volcano is thus a consequence of kinetic limitations by heat and mud expulsion, whereas most of the outer mud volcano area is limited by hydrocarbon transport.
Coverage:
Median Latitude: 32.368434 * Median Longitude: 31.705366 * South-bound Latitude: 32.357330 * West-bound Longitude: 31.541160 * North-bound Latitude: 32.370100 * East-bound Longitude: 31.711130
Date/Time Start: 2006-10-24T04:58:00 * Date/Time End: 2009-11-13T15:22:27
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58 datasets

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Datasets listed in this publication series

  1. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_929-1_PUC1. https://doi.org/10.1594/PANGAEA.809202
  2. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_929-1_PUC9. https://doi.org/10.1594/PANGAEA.809203
  3. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_933-1_PUC2. https://doi.org/10.1594/PANGAEA.809205
  4. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_933-1_PUC24. https://doi.org/10.1594/PANGAEA.809206
  5. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_947-1_PUC27. https://doi.org/10.1594/PANGAEA.809207
  6. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_947-1_PUC32. https://doi.org/10.1594/PANGAEA.809209
  7. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC110. https://doi.org/10.1594/PANGAEA.809210
  8. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC117. https://doi.org/10.1594/PANGAEA.809212
  9. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC19. https://doi.org/10.1594/PANGAEA.809213
  10. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC23. https://doi.org/10.1594/PANGAEA.809214
  11. Felden, J; Bienhold, C; Boetius, A (2013): Sulphate reduction rates of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC8. https://doi.org/10.1594/PANGAEA.809215
  12. Felden, J; Boetius, A (2011): Methane oxidation and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-68. https://doi.org/10.1594/PANGAEA.770201
  13. Felden, J; Boetius, A (2011): Methane oxidation and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-8. https://doi.org/10.1594/PANGAEA.770202
  14. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2a_760_PUC-15. https://doi.org/10.1594/PANGAEA.770189
  15. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2a_760_PUC-44. https://doi.org/10.1594/PANGAEA.770193
  16. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-38. https://doi.org/10.1594/PANGAEA.770197
  17. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-6. https://doi.org/10.1594/PANGAEA.770200
  18. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2b_825_PUC-11. https://doi.org/10.1594/PANGAEA.770237
  19. Felden, J; Boetius, A (2011): Methane oxidation rates of Amon mud volcano sediments measured at station M70/2b_825_PUC-12. https://doi.org/10.1594/PANGAEA.770238
  20. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_929-1_PUC20. https://doi.org/10.1594/PANGAEA.809268
  21. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_933-1_PUC21. https://doi.org/10.1594/PANGAEA.809270
  22. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_947-1_PUC19. https://doi.org/10.1594/PANGAEA.809271
  23. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_950-1. https://doi.org/10.1594/PANGAEA.809272
  24. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_951-1. https://doi.org/10.1594/PANGAEA.809273
  25. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC17. https://doi.org/10.1594/PANGAEA.809274
  26. Felden, J; Boetius, A (2013): Pore water geochemistry of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC5. https://doi.org/10.1594/PANGAEA.809275
  27. Felden, J; Boetius, A (2011): Single cell abundances and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-26. https://doi.org/10.1594/PANGAEA.770196
  28. Felden, J; Boetius, A (2011): Single cell abundances of Amon mud volcano sediments measured at station M70/2a_757_PUC-52. https://doi.org/10.1594/PANGAEA.770184
  29. Felden, J; Boetius, A (2011): Single cell abundances of Amon mud volcano sediments measured at station M70/2a_760_PUC-33. https://doi.org/10.1594/PANGAEA.770191
  30. Felden, J; Boetius, A (2011): Single cell abundances of Amon mud volcano sediments measured at station M70/2a_760_PUC-40. https://doi.org/10.1594/PANGAEA.770192
  31. Felden, J; Boetius, A (2013): Single cell abundances of Amon mud volcano sediments measured at station MSM13/3_929-1_PUC22. https://doi.org/10.1594/PANGAEA.809176
  32. Felden, J; Boetius, A (2013): Single cell abundances of Amon mud volcano sediments measured at station MSM13/3_933-1_PUC13. https://doi.org/10.1594/PANGAEA.809177
  33. Felden, J; Boetius, A (2013): Single cell abundances of Amon mud volcano sediments measured at station MSM13/3_947-1_PUC31. https://doi.org/10.1594/PANGAEA.809178
  34. Felden, J; Boetius, A (2013): Single cell abundances of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC15. https://doi.org/10.1594/PANGAEA.809180
  35. Felden, J; Boetius, A (2013): Single cell abundances of Amon mud volcano sediments measured at station MSM13/3_968-1_PUC2. https://doi.org/10.1594/PANGAEA.809181
  36. Felden, J; Boetius, A (2011): Single cell abundances, methane oxidation and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_763. https://doi.org/10.1594/PANGAEA.770195
  37. Felden, J; Boetius, A (2011): Single cell abundances, methane oxidation and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-49. https://doi.org/10.1594/PANGAEA.770199
  38. Felden, J; Boetius, A (2011): Single cell abundances, methane oxidation and sulphate reduction rates of Amon mud volcano sediments measured at station M70/2b_825_PUC-9. https://doi.org/10.1594/PANGAEA.770239
  39. Felden, J; Boetius, A (2011): Sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_760_PUC-12. https://doi.org/10.1594/PANGAEA.770188
  40. Felden, J; Boetius, A (2011): Sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_760_PUC-25. https://doi.org/10.1594/PANGAEA.770190
  41. Felden, J; Boetius, A (2011): Sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_760_PUC-53. https://doi.org/10.1594/PANGAEA.770194
  42. Felden, J; Boetius, A (2011): Sulphate reduction rates of Amon mud volcano sediments measured at station M70/2a_765_PUC-42. https://doi.org/10.1594/PANGAEA.770198
  43. Felden, J; Boetius, A (2011): Sulphate reduction rates of Amon mud volcano sediments measured at stationM70/2a_757_PUC-11. https://doi.org/10.1594/PANGAEA.770183
  44. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_757_PUC-10. https://doi.org/10.1594/PANGAEA.738339
  45. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_757_PUC-22. https://doi.org/10.1594/PANGAEA.738341
  46. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-39. https://doi.org/10.1594/PANGAEA.738342
  47. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-41. https://doi.org/10.1594/PANGAEA.738343
  48. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-45. https://doi.org/10.1594/PANGAEA.738344
  49. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_760_PUC-48. https://doi.org/10.1594/PANGAEA.738345
  50. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-14. https://doi.org/10.1594/PANGAEA.738346
  51. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-46. https://doi.org/10.1594/PANGAEA.738347
  52. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-47. https://doi.org/10.1594/PANGAEA.738348
  53. Lichtschlag, A; Boetius, A; Felden, J et al. (2010): Pore water geochemistry of Amon mud volcano sediments measured at station M70/2a_765_PUC-52. https://doi.org/10.1594/PANGAEA.738349
  54. Lichtschlag, A; Boetius, A; de Beer, D (2013): High resolution in situ microsensor measurements of Amon mud volcano sediments measured at station M70/2b_825_PROF-1. https://doi.org/10.1594/PANGAEA.809982
  55. Lichtschlag, A; Boetius, A; de Beer, D (2013): High resolution in situ microsensor measurements of Amon mud volcano sediments measured at station M70/2b_825_PROF-2. https://doi.org/10.1594/PANGAEA.809977
  56. Pop Ristova, P; Wenzhöfer, F (2013): High resolution in situ microsensor measurements of Amon mud volcano sediments measured at station MSM13/3_947-1_MICP7. https://doi.org/10.1594/PANGAEA.810005
  57. Pop Ristova, P; Wenzhöfer, F (2013): High resolution in situ microsensor measurements of Amon mud volcano sediments measured at station MSM13/3_971-1_MICP11. https://doi.org/10.1594/PANGAEA.809998
  58. Pop Ristova, P; Wenzhöfer, F (2013): High resolution in situ microsensor measurements of Amon mud volcano sediments measured at station MSM13/3_971-1_MICP12. https://doi.org/10.1594/PANGAEA.810001