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Tosh, Cheryl Ann; de Bruyn, P J Nico; Steyn, Jumari; Bornemann, Horst; van den Hoff, John; Stewart, Brent S; Plötz, Joachim; Bester, Marthán N (2015): At surface behaviour at location on spot of southern elephant seals from Marion Island in 2004 with links to datasets. PANGAEA, https://doi.org/10.1594/PANGAEA.150015, Supplement to: Tosh, CA et al. (2015): The importance of seasonal sea surface height anomalies for foraging juvenile southern elephant seals. Marine Biology, 162(10), 2131-2140, https://doi.org/10.1007/s00227-015-2743-4

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Abstract:
A novel classification system was applied to the sea level anomaly (SLA) environment around Marion Island. We classified the SLA seascape into habitat types and calculated percentage of habitat use of ten juvenile southern elephant seals (SES). Movements were compared to SLA and SLA slope values indicative of ocean eddy features. This classification provides a measure of habitat change due to seasonal fluctuations in SLA. Some of the seals made two migrations in different seasons, each of similar duration and proportions of potential foraging behaviour. The seals in this study did not use any intense eddy features, but their behaviours varied with SLA class. Potential foraging behaviour was positively influenced by negative SLA values (i.e. areas of below average sea surface height). Searching behaviour during the winter was more likely at eddy edges where high SLA slope values correlated with low SLA values. Though the seals did not forage within newly spawned eddies, they did forage near the sub-Antarctic front. Plankton and other biological resources transported by eddies formed at the subtropical convergence zone are evidently concentrated in this region and enhance the food chain there, forming a foraging ground for juvenile SES from Marion Island.
Project(s):
Coverage:
Median Latitude: -46.641056 * Median Longitude: 31.118850 * South-bound Latitude: -49.035000 * West-bound Longitude: -6.853000 * North-bound Latitude: -43.086000 * East-bound Longitude: 52.052200
Date/Time Start: 2004-04-13T00:00:00 * Date/Time End: 2005-01-09T18:00:00
Event(s):
MAR2004_sel_u_f_05 * Latitude Start: -46.827000 * Longitude Start: 37.855000 * Latitude End: -49.035000 * Longitude End: 27.252000 * Date/Time Start: 2004-04-13T00:00:00 * Date/Time End: 2004-11-09T00:00:00 * Campaign: MAR2004 * Basis: Marion Island Research Station * Method/Device: Marine endotherm (MET) * Comment: Mirounga leonina, subadualt male
MAR2004_sel_u_f_11 * Latitude Start: -46.827000 * Longitude Start: 37.855000 * Latitude End: -46.887000 * Longitude End: 37.856000 * Date/Time Start: 2004-04-16T00:00:00 * Date/Time End: 2004-12-04T00:00:00 * Campaign: MAR2004 * Basis: Marion Island Research Station * Method/Device: Marine endotherm (MET) * Comment: Mirounga leonina, subadualt male
MAR2004_sel_u_m_09 * Latitude Start: -46.860800 * Longitude Start: 37.820100 * Latitude End: -46.481200 * Longitude End: 52.052200 * Date/Time Start: 2004-04-22T17:52:00 * Date/Time End: 2005-01-09T18:00:00 * Location: Southern Ocean - Indian sector * Campaign: MAR2004 * Basis: Marion Island Research Station * Method/Device: Marine endotherm (MET) * Comment: Mirounga leonina, subadualt male
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Campaign of eventCampaignBornemann, Horst
2Event labelEventBornemann, Horst
3Date/Time of eventDate/TimeBornemann, Horst
4Latitude of eventLatitudeBornemann, Horst
5Longitude of eventLongitudeBornemann, Horst
6Date/Time of event 2Date/Time 2Bornemann, Horst
7Latitude of eventLatitudeBornemann, Horst
8Longitude of event 2Longitude 2Bornemann, Horst
9Author(s)Author(s)Bornemann, Horst
10Year of publicationYearBornemann, Horst
11TitleTitleBornemann, Horst
12Reference/sourceReferenceBornemann, Horst
13Persistent IdentifierPersistent IdentifierBornemann, Horst
Size:
45 data points

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