Search Results - "de Bruyn, PJN"

Killer whale ecotypes: is there a global model? by de Bruyn, P. J. N., Tosh, Cheryl A., Terauds, Aleks

“…Killer whales, Orcinus orca, are top predators occupying key ecological roles in a variety of ecosystems and are one of the most widely distributed mammals on…”
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Movement and diving of killer whales ( Orcinus orca ) at a Southern Ocean archipelago by Reisinger, Ryan R., Keith, Mark, Andrews, Russel D., de Bruyn, P.J.N.

“…Eleven satellite tags were deployed on 9 killer whales at the Prince Edwards Islands in the Southern Ocean. State-space switching models were used to generate…”
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Cross-seasonal foraging site fidelity of subantarctic fur seals: implications for marine conservation areas by Wege, M., Tosh, C. A., de Bruyn, P. J. N., Bester, M. N.

“…Marine top predators show fidelity to foraging areas with predictable high-quality food patches. Areas of predictable prey yield are of conservation…”
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Low trophic level diet of juvenile southern elephant seals Mirounga leonina from Marion Island: a stable isotope investigation using vibrissal regrowths by Lübcker, Nico, Reisinger, Ryan R., Oosthuizen, W. Chris, de Bruyn, P. J. Nico, van Tonder, André, Pistorius, Pierre A., Bester, Marthán N.

“…Insight into the trophic ecology of marine predators is vital for understanding their ecosystem role and predicting their responses to environmental change…”
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Vibrissal growth parameters of southern elephant seals Mirounga leonina: obtaining fine-scale, time-based stable isotope data by Lübcker, Nico, Condit, Richard, Beltran, Roxanne S., de Bruyn, P. J. Nico, Bester, Marthán N.

“…Stable isotopes provide a powerful, indirect approach to assess the trophic ecology of individuals on a spatial and temporally integrated basis (especially…”
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Variation in the diet of killer whales Orcinus orca at Marion Island, Southern Ocean by Reisinger, Ryan R., Gröcke, Darren R., Lübcker, Nico, McClymont, Erin L., Hoelzel, A. Rus, de Bruyn, P. J. Nico

“…Diet seems to be a key factor driving diversity and isolation among killer whale populations. Killer whales at Marion Island, Southern Ocean, have been…”
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At-sea behaviour of three krill predators breeding at Bouvetøya—Antarctic fur seals, macaroni penguins and chinstrap penguins by Blanchet, Marie-Anne, Biuw, Martin, Hofmeyr, G. J. Greg, de Bruyn, P. J. Nico, Lydersen, Christian, Kovacs, Kit M.

“…Interspecific competition is an important structuring element in marine ecosystems, especially in the Southern Ocean which offers few prey choices to…”
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Sex at sea: alternative mating system in an extremely polygynous mammal by de Bruyn, P.J.N., Tosh, C.A., Bester, M.N., Cameron, E.Z., McIntyre, T., Wilkinson, I.S.

“…Polygyny is a widespread and evolutionarily significant mating system in vertebrates. The southern elephant seal, Mirounga leonina, has often been cited as…”
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Reliability of VHF telemetry data for measuring attendance patterns of marine predators: a comparison with time depth recorder data by Lowther, Andrew D., Ahonen, Heidi, Hofmeyr, Greg, Oosthuizen, W. Chris, De Bruyn, P. J. Nico, Lydersen, Christian, Kovacs, Kit M.

“…Very high frequency (VHF) radiotelemetry data has been used for over 30 yr to monitor the behavior patterns of otariid seals. These data have been used in a…”
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Bathymetry and frontal system interactions influence seasonal foraging movements of lactating subantarctic fur seals from Marion Island by de Bruyn, P. J. Nico, Tosh, Cheryl A., Oosthuizen, W. Chris, Bester, Marthán N., Arnould, John P. Y.

“…Sixteen lactating subantarctic fur sealsArctocephalus tropicaliswere satellite-tracked during the winter of 2006 (n = 6), summer of 2006/07 (n = 6) and…”
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Population dynamics of southern elephant seals: a synthesis of three decades of demographic research at Marion Island by Pistorius, PA, de Bruyn, PJN, Bester, MN

“…Southern elephant seal Mirounga leonina numbers declined precipitously throughout most of their circumpolar distribution since the 1950s. A long-term intensive…”
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Predatory impact of killer whales on pinniped and penguin populations at the Subantarctic Prince Edward Islands: fact and fiction by Reisinger, R. R., de Bruyn, P. J. N., Bester, M. N.

“…Killer whales are the oceans' apex predators and their potential effects on ecosystems have been demonstrated. In the Southern Ocean, the role of killer whale…”
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Prey and seasonal abundance of killer whales at sub-Antarctic Marion Island by Reisinger, RR, de Bruyn, PJN, Tosh, CA, Oosthuizen, WC, Mufanadzo, NT, Bester, MN

“…The diet of killer whales Orcinus orca was investigated from 48 predation events observed during 823 sightings at sub-Antarctic Marion Island between 2006 and…”
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The Marine Mammal Programme at the Prince Edward Islands: 38 years of research by Bester, MN, de Bruyn, PJN, Oosthuizen, WC, Tosh, CA, McIntyre, T, Reisinger, RR, Postma, M, van der Merwe, DS, Wege, M

“…The Marine Mammal Programme (MMP) conducts research on pinnipeds and killer whales Orcinus orca at Marion Island, Prince Edward Islands, under the auspices of…”
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Sexual harassment of a king penguin by an Antarctic fur seal by de Bruyn, P. J. Nico, Tosh, Cheryl A., Bester, Marthán N.

“…Males of gregarious pinnipeds are often aggressive to conspecifics and sexual coercion of females is commonplace. Males of some pinniped species have been…”
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Who's the boss? Giant petrel arrival times and interspecific interactions at a seal carcass at sub-Antarctic Marion Island by DE BRUYN, P. J. N, COOPER, J

“…Most northern giant petrels Macronectes halli arrived before southern giant petrels Macronectes giganteus at a seal carcass at sub-Antarctic Marion Island and…”
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Cephalopod diet of the Cape fur seal, Arctocephalus pusillus pusillus, along the Namibian coast: variation due to location by de Bruyn, P.J.N., Bester, M.N., Kirkman, S.P., Mecenero, S., Roux, J.P., Klages, N.T.W.

“…Scats of the Cape fur seal, Arctocephalus pusillus pusillus, were sampled at four mainland colonies, Cape Cross, Atlas Bay,Wolf Bay and Van Reenen Bay, along…”
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First record of a vagrant Commerson's dolphin, Cephalorhynchus commersonii, at the southern African continental shelf by de Bruyn, P. J. N, Hofmeyr, G. J. G, de Villiers, M. S

“…Commerson's Dolphins Cephalorhynchus commersonii are distributed in two disjunct populations, one around southern South America and the other around the…”
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