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Browsing Mammal Research Institute by Subject "Abundance"
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Vargas-Fonseca, O. Alejandra; Kirkman, Stephen P.; Oosthuizen, Wessel Christiaan; Bouveroux, Thibaut; Cockcroft, Vic; Conry, Danielle S.; Pistorius, Pierre Anton
(Public Library of Science, 2020-10)
Coastally distributed dolphin species are vulnerable to a variety of anthropogenic pressures,
yet a lack of abundance data often prevents data-driven conservation management strategies from being implemented. We investigated ...
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Jordaan, Rowan Keith; Oosthuizen, Wessel Christiaan; Reisinger, Ryan Rudolf; De Bruyn, P.J. Nico
(Nordic Council for Wildlife Research, 2020)
Killer whales, Orcinus orca, are a cosmopolitan species with large ecological and demographic variation across populations. Population-specific demographic studies are, therefore, crucial in accurately assessing the status ...
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Martin, Morgan Jennifer; Gridley, Tess; Roux, Jean-Paul; Elwen, Simon Harvey
(Frontiers Media, 2020-09)
Knowledge of a population’s abundance is of primary importance for conservation
management. However, robust estimates of abundance are often difficult to obtain,
especially for cetaceans which spend most of their lives ...
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Elwen, Simon Harvey; Reeb, Desray; Thornton, Meredith; Best, Peter B.
(Blackwell, 2009)
Heaviside's dolphins, Cephalorhynchus heavisidii, are endemic to southwestern Africa, where they are exposed to unknown levels of anthropogenic threats, including inshore set netting. Using photo-ID data collected over 3 ...
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Ramahlo, Mmatsawela; Somers, Michael J.; Hart, Daniel William; Ganswindt, Andre
(MDPI, 2022-02-09)
Anthropogenic land transformation is a consequence of human population growth and
the associated agricultural, residential, and industrial needs. This study aimed to investigate the
effects of anthropogenic activity and ...