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Browsing Research Articles (Zoology and Entomology) by Author "Ferreira, Sam M."
Now showing items 1-11 of 11
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Ferreira, Sam M.; Van Aarde, Rudi J. (South African Wildlife Management Association, 2009-10)Population estimates based on strip transect aerial surveys of large herbivores can aid management decisions if estimates are accurate and precise. Because sampling intensities may influence precision, we simulated survey ...
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Trimble, Morgan Jayne; Van Aarde, Rudi J.; Ferreira, Sam M.; Norgaard, Camilla F.; Fourie, Jo; Lee, Phyllis C.; Moss, Cynthia J. (Public Library of Science, 2011-10-19)Determining the age of individuals in a population can lead to a better understanding of population dynamics through age structure analysis and estimation of age-specific fecundity and survival rates. Shoulder height has ...
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Maputla, N.W. (Nakedi Walter); Chimimba, Christian Timothy; Ferreira, Sam M. (Wiley-Blackwell, 2013-03)Estimating large carnivore abundance can be challenging. A biased leopard (Panthera pardus) population survey was conducted in the N’wanetsi concession in the Kruger National Park (KNP), South Africa, using motion-sen ...
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Gunner, Richard M.; Wilson, Rory P.; Holton, Mark D.; Hopkins, Phil; Bell, Stephen H.; Marks, Nikki J.; Bennett, Nigel Charles; Ferreira, Sam M.; Govender, Danny; Viljoen, Pauli; Bruns, Angela; Van Schalkwyk, Ockert Louis; Bertelsen, Mads F.; Duarte, Carlos M.; Van Rooyen, Martin C.; Tambling, Craig; Goppert, Aoife; Diesel, Delmar; Scantlebury, D. Michael (Royal Society, 2022-01)The combined use of global positioning system (GPS) technology and motion sensors within the discipline of movement ecology has increased over recent years. This is particularly the case for instrumented wildlife, with ...
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Van Aarde, Rudi J.; Ferreira, Sam M. (Cambridge University Press, 2009)The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) regulates trade in species and their products. The original listing of the African elephant (Loxodonta africana) in Appendix II ...
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Steenkamp, Gerhardus; Ferguson, Jan Willem Helenus; Boy, Sonja Catharina; Ferreira, Sam M.; Bester, Marthan Nieuwoudt (South African Veterinary Association, 2008-03)Captive and wild African elephants frequently suffer tusk fractures. Several institutions shorten the tusks of captive elephants to reduce fractures and injury as a result of behaviour within enclosures. Fracturing or ...
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Ntumi, C.P. (Cornelio Pedro); Ferreira, Sam M.; Van Aarde, Rudi J. (Cambridge University Press, 2009)The elephant Loxodonta africana population of Mozambique has declined rapidly over the last 4 decades. Historical census data are incomplete but suggest that the impact of human activity on the elephant population increased ...
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Nhleko, Zoliswa N.; Ganswindt, Andre; Ferreira, Sam M.; McCleery, Robert A. (CSIRO Publishing, 2023-04)CONTEXT : Due to considerable declines in African wildlife populations, most large African mammals are managed inside protected areas. Protected areas come in various sizes, and have different environmental features, ...
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Steenkamp, Gerhardus; Ferreira, Sam M.; Bester, Marthan Nieuwoudt (South African Veterinary Association, 2007-06)The incidence of tusklessness varies between free-ranging African elephant populations. Sex-linked genetic drift predicts 2 outcomes - the condition becomes fixed and sex-specific incidences diverge when populations are ...
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McCleery, Robert A.; Nhleko, Zoliswa N.; Arhens, Robert M.; Ferreira, Sam M. (Zoological Society of London, 2022-04)No abstract available.
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Nhleko, Zoliswa N.; Shrader, A.M. (Adrian); Ferreira, Sam M.; McCleery, Robert A. (Oxford University Press, 2022-12)Harnessing the fear animals have of humans has the potential to aid in the conservation of wildlife. Most vertebrates perceive humans as “super predators.” While predator cues are an important nonlethal management tool, ...
Now showing items 1-11 of 11