Pehlke, Hendrik; Brey, Thomas; Teschke, Katharina (2019): Spatial distribution of seals in the wider Weddell Sea (Antarctica) with links to ArcGIS map packages [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.899619
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Here we provide two ArcGIS map packages with georeferenced files on the spatial distribution of seals in the wider Weddell Sea (Antarctica), which were created in the context of the development of a marine protected area in the Weddell Sea.
Spatial distribution of seals based on aerial surveys: The map of the spatial distribution of crabeater seals is based on modelled seal abundances from Flores et al. (2008) and Forcada et al. (2012). These modelled abundances were supplemented by abundance data derived from Bester et al. (1995, 2002) and by point data from Plötz et al. (2011a-e), which were translated into abundance values by the count method for line transect data. The calculated data on seal abundances from Plötz et al. (2011a-e) and Bester et al. (1995, 2002) were interpolated using the inverse distance weighted method. The combined data set of modelled and interpolated abundances showed highest absolute seal abundances offshore the Riiser-Larsen Ice Shelf and Quarisen Ice Shelf.
Spatial distribution of seals based on tracking data: The map of probability of seal occurrence is based on all tracking data publicly available for the wider Weddell Sea from the MEOP data portal "Marine Mammals Exploring the Oceans Pole to Pole" (data request: 14-11-2016). In addition, we have used MEOP data (UK data: ct27, ct70; German data: ct113, wd06, wd07) for which unconditional sharing is not yet accepted. These data were provided by Lars Boehme (University of St. Andrews) and Horst Bornemann (AWI), respectively. Furthermore, the data from the MEOP data portal were complemented by tracking data sets on southern elephant seals (Tosh et al. 2009, James et al. 2012), Weddell seals (McIntyre et al. 2013) and crabeater seals (Nachtsheim et al. 2016). All tracking data united were processed with a state-space model described by Johnson et al. (2008) and were implemented in the R package crawl (Johnson 2011). The tracking data analysis indicated frequent occurrence of seals in a larger area off the Brunt and Filchner Ice Shelf (approx. 25°W-40°W), and in smaller patches along the eastern Weddell Sea ice shelfs as well as in the region around the tip of the Antarctic Peninsula.
More information on the spatial analysis is given in working paper WG-EMM-16/03 and WG-SAM-17/30 submitted to the CCAMLR Working Group on Ecosystem Monitoring and Management (EMM) and the CCAMLR Working Group on Statistics, Assessments and Modelling (SAM), respectively (available at https://www.ccamlr.org/en/wg-emm-16 and https://www.ccamlr.org/en/wg-sam-17).
Source:
Bester, Marthán Nieuwoudt; Erickson, Albert W; Ferguson, J Willem H (1995): Seasonal change in the distribution and density of seals in the pack ice off Princess Martha Coast, Antarctica. Antarctic Science, 7(04), https://doi.org/10.1017/S0954102095000502
Bester, Marthán Nieuwoudt; Ferguson, J Willem H; Jonker, F C (2002): Population densities of pack ice seals in the Lazarev Sea, Antarctica. Antarctic Science, 14(02), https://doi.org/10.1017/S0954102002000676
Flores, Hauke; Haas, Christian; van Franeker, Jan Andries; Meesters, Erik (2008): Density of pack-ice seals and penguins in the western Weddell Sea in relation to ice thickness and ocean depth. Deep Sea Research Part II: Topical Studies in Oceanography, 55(8-9), 1068-1074, https://doi.org/10.1016/j.dsr2.2007.12.024
Forcada, Jaume; Trathan, Phil N; Boveng, Peter; Boyd, Ian L; Burns, Jennifer M; Costa, Daniel P; Fedak, Mike A; Rogers, Tracey; Southwell, Colin J (2012): Responses of Antarctic pack-ice seals to environmental change and increasing krill fishing. Biological Conservation, 149(1), 40-50, https://doi.org/10.1016/j.biocon.2012.02.002
James, Bridget C; McIntyre, Trevor; Tosh, Cheryl Ann; Bornemann, Horst; Plötz, Joachim; Bester, Marthán Nieuwoudt (2012): Dive depth frequency of 23 adult male southern elephant seals (Mirounga leonina) from Marion Island and King George Island. PANGAEA, https://doi.org/10.1594/PANGAEA.785852
McIntyre, Trevor; Stansfield, Lauren J; Bornemann, Horst; Plötz, Joachim; Bester, Marthán Nieuwoudt (2013): Hydrographic data from Atka Bay taken by Weddell seals during expedition NEU2008 with links to datasets. PANGAEA, https://doi.org/10.1594/PANGAEA.818467
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
Plötz, Joachim; Steinhage, Daniel; Bornemann, Horst (2011): Seal census raw data during campaign EMAGE-I. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.760097
Plötz, Joachim; Steinhage, Daniel; Bornemann, Horst (2011): Seal census raw data during campaign EMAGE-II. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.760098
Plötz, Joachim; Steinhage, Daniel; Bornemann, Horst (2011): Seal census raw data during campaign EMAGE-III. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.760099
Plötz, Joachim; Steinhage, Daniel; Bornemann, Horst (2011): Seal census raw data during campaign EMAGE-IV. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.760100
Plötz, Joachim; Steinhage, Daniel; Bornemann, Horst (2011): Seal census raw data during campaign EMAGE-V. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.760101
Tosh, Cheryl Ann; Bornemann, Horst; Ramdohr, Sven; Schröder, Michael; Martin, Thomas; Carlini, Alejandro R; Plötz, Joachim; Bester, Marthán Nieuwoudt; Sellmann, Lutz (2009): At surface behaviour of adult male southern elephant seals from King George Island from expedition JUB2000. PANGAEA, https://doi.org/10.1594/PANGAEA.692856
Further details:
Gurarie, Eliezer; Bengtson, John L; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1149-1165, https://doi.org/10.1007/s00300-016-2029-4
James, Bridget C; McIntyre, Trevor; Tosh, Cheryl Ann; Bornemann, Horst; Plötz, Joachim; Bester, Marthán Nieuwoudt (2012): Inter-population differences in diving behaviour of adult male southern elephant seals (Mirounga leonina). Polar Biology, 35(11), 1759-1766, https://doi.org/10.1007/s00300-012-1214-3
McIntyre, Trevor; Stansfield, Lauren J; Bornemann, Horst; Plötz, Joachim; Bester, Marthán Nieuwoudt (2013): Hydrographic influences on the summer dive behaviour of Weddell seals (Leptonychotes weddellii) in Atka Bay, Antarctica. Polar Biology, 36(11), 1693-1700, https://doi.org/10.1007/s00300-013-1384-7
Nachtsheim, Dominik A; Jerosch, Kerstin; Hagen, Wilhelm; Plötz, Joachim; Bornemann, Horst (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
Tosh, Cheryl Ann; Bornemann, Horst; Ramdohr, Sven; Schröder, Michael; Martin, Thomas; Carlini, Alejandro R; Plötz, Joachim; Bester, Marthán Nieuwoudt (2009): Adult male southern elephant seals from King George Island utilize the Weddell Sea. Antarctic Science, 21, 113-121, https://doi.org/10.1017/S0954102008001557
Project(s):
Funding:
Federal Ministry of Food and Agriculture (BMEL), grant/award no. 2813HS009: Development of a CCAMLR Marine Protected Area in the Antarctic Weddell Sea
Coverage:
Median Latitude: -70.000000 * Median Longitude: -30.000000 * South-bound Latitude: -80.000000 * West-bound Longitude: -90.000000 * North-bound Latitude: -60.000000 * East-bound Longitude: 30.000000
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Teschke, Katharina | |||
| 2 | File name | File name | Teschke, Katharina | |||
| 3 | File format | File format | Teschke, Katharina | |||
| 4 | File size | File size | kByte | Teschke, Katharina | ||
| 5 | Uniform resource locator/link to file | URL file | Teschke, Katharina |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
20 data points