Fluctuations in the Population of Southern Elephant SealsMirounga Leoninaat Kerguelen Island
نویسندگان
چکیده
منابع مشابه
Iron biogeochemical budgets around Kerguelen Island, Southern Ocean
Introduction Conclusions References
متن کاملSuccessful foraging zones of southern elephant seals from the Kerguelen Islands in relation to oceanographic conditions.
Southern elephant seals, Mirounga leonina, undertake large-scale oceanic movements to access favourable foraging areas. Successful foraging areas of elephant seals from the Kerguelen Islands are investigated here in relation to oceanographic parameters. Movements and diving activity of the seals as well as oceanographic data were collected through a new generation of satellite relayed devices m...
متن کاملMolecular population genetics of the southern elephant seal Mirounga leonina.
Southern elephant seals breed on sub-Antarctic islands and have a circumpolar distribution. We assayed mitochondrial DNA (mtDNA) and nuclear DNA (nDNA) variation in the three main populations in the south Atlantic, south Indian, and south Pacific oceans, and a smaller continental population in South America. Population structure of mtDNA was strong and not consistent with isolation by distance....
متن کاملDung survey bias and elephant population estimates in southern Mozambique
We used dung surveys to estimate population size and extracted an age structure from boli diameters for the elephants living in the Maputo Elephant Reserve. Our estimate was based on published defecation rates, dung decay rates, distance-sampling techniques and 1,672 dung piles encountered on 204 line-transects. The reserve had at least 311 (95% CI: 198–490) elephants at a density of 0.60 (95% ...
متن کاملStable isotopes reveal the trophic position and mesopelagic fish diet of female southern elephant seals breeding on the Kerguelen Islands
Trophic interactions between organisms are the main drivers of ecosystem dynamics, but scant dietary information is available for wide-ranging predators during migration. We investigated feeding habits of a key consumer of the Southern Ocean, the southern elephant seal Miroungia leonina, by comparing its blood δ13C and δ15N values with those of various marine organisms, including crustaceans, s...
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ژورنال
عنوان ژورنال: South African Journal of Zoology
سال: 1980
ISSN: 0254-1858
DOI: 10.1080/02541858.1980.11447694