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Nachtsheim, Dominik A; Jerosch, Kerstin; Hagen, Wilhelm; Plötz, Joachim; Bornemann, Horst (2016): Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign. PANGAEA, https://doi.org/10.1594/PANGAEA.854842, Supplement to: Nachtsheim, DA et al. (2016): Habitat modelling of crabeater seals (Lobodon carcinophaga) in the Weddell Sea using the multivariate approach Maxent. Polar Biology, 40(5), 961-976, https://doi.org/10.1007/s00300-016-2020-0

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Abstract:
The crabeater seal (Lobodon carcinophaga) is the most abundant Antarctic seal and inhabits the circumpolar pack ice zone of the Southern Ocean. Until now, information on important environmental factors affecting its distribution as well as on foraging behaviour is limited. In austral summer 1998, 12 crabeater seals of both sexes and different age classes were equipped with satellitelinked dive recorders at Drescher Inlet (72.85°S, 19.26°E), eastern Weddell Sea. To identify suitable habitat conditions within the Weddell Sea, a maximum entropy (Maxent) modelling approach was implemented. The model revealed that the eastern and southern Weddell Sea is especially suitable for crabeater seals. Distance to the continental shelf break and sea ice concentration were the two most important parameters in modelling species distribution throughout the study period. Model predictions demonstrated that crabeater seals showed a dynamic response to their seasonally changing environment emphasized by the favoured sea ice conditions. Crabeater seals utilized ice-free waters substantially, which is potentially explained by the comparatively low sea ice cover of the Weddell Sea during summer 1998. Diving behaviour was characterized by short (>90 % = 0-4 min) and shallow (>90 % = 0-51 m) dives. This pattern reflects the typical summer and autumn foraging behaviour of crabeater seals. Both the distribution and foraging behaviour corresponded well with the life history of the Antarctic krill (Euphausia superba), the preferred prey of crabeater seals. In general, predicted suitable habitat conditions were congruent with probable habitats of krill, which emphasizes the strong dependence on their primary prey.
Project(s):
Coverage:
Median Latitude: -71.624400 * Median Longitude: -19.330648 * South-bound Latitude: -75.798000 * West-bound Longitude: -47.604000 * North-bound Latitude: -65.135000 * East-bound Longitude: 55.483000
Date/Time Start: 1998-01-28T16:20:00 * Date/Time End: 1998-05-29T01:24:00
Size:
55 datasets

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Datasets listed in this publication series

  1. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_a_f_14 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261726
  2. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_a_m_01 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261727
  3. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_a_m_02 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261728
  4. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_a_m_10 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261729
  5. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_s_f_09 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261725
  6. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_s_m_13 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261734
  7. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_05 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261735
  8. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_06 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261736
  9. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_07 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261730
  10. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_08 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261731
  11. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_11 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261732
  12. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_12 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261733
  13. Bornemann, H; Plötz, J (2005): At surface behaviour at location on spot of crabeater seal DRE1998_cra_y_m_15 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264706
  14. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_a_f_14 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264304
  15. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_a_m_01 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264374
  16. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_a_m_02 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264375
  17. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_a_m_10 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264376
  18. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_s_f_09 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264373
  19. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_s_m_13 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264381
  20. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_05 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264382
  21. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_06 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264383
  22. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_07 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264377
  23. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_08 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264378
  24. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_11 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264379
  25. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_12 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264380
  26. Bornemann, H; Plötz, J (2005): Dive depth frequency of crabeater seal DRE1998_cra_y_m_15 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264703
  27. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_a_f_14 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261743
  28. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_a_m_01 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261744
  29. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_a_m_02 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261745
  30. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_a_m_10 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261746
  31. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_s_f_09 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261738
  32. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_s_m_13 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261751
  33. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_05 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261752
  34. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_06 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261753
  35. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_07 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261747
  36. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_08 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261748
  37. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_11 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261749
  38. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_12 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.261750
  39. Bornemann, H; Plötz, J (2005): Dive duration frequency of crabeater seal DRE1998_cra_y_m_15 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264704
  40. Bornemann, H; Plötz, J (2006): Immobilisation dose rates for Crabeater seals during expedition DRE1998. https://doi.org/10.1594/PANGAEA.438929
  41. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_a_f_14 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231396
  42. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_a_m_01 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231397
  43. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_a_m_02 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231398
  44. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_a_m_10 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231399
  45. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_s_f_09 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231395
  46. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_s_m_13 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231404
  47. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_05 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231405
  48. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_06 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231406
  49. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_07 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231400
  50. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_08 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231401
  51. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_11 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231402
  52. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_12 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.231403
  53. Bornemann, H; Plötz, J (2005): Maximum dive depth of crabeater seal DRE1998_cra_y_m_15 from Drescher Inlet. https://doi.org/10.1594/PANGAEA.264705
  54. Nachtsheim, DA; Jerosch, K; Hagen, W et al. (2015): Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to files of gridded seal locations and environmental parameters for Maxent analyses. https://doi.org/10.1594/PANGAEA.855006
  55. Nachtsheim, DA; Jerosch, K; Hagen, W et al. (2015): Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to shapefiles of filtered and unfiltered seal locations for ArcGIS visualisation. https://doi.org/10.1594/PANGAEA.855005