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Vallance, Kristina, 2015. Hot, hungry, or dead : how herbivores select microhabitats based on the trade-off between temperature and predation risk. Second cycle, A2E. Umeå: SLU, Dept. of Wildlife, Fish and Environmental Studies



Besides habitat loss and fragmentation, global warming is a major anthropogenic factor affecting species today. With temperatures rising, and barriers to movement increasing, many species are turning to behavioural responses deal with increased temperatures. These behavioural responses can be with respect to time or space use. However, with respect to such behavioural responses, animals have to manage the trade-off between food availability, predation risk and temperature. In this study I will look at how differently-sized herbivores respond to variation in temperature and predation risk while keeping food availability constant by using only grazing lawns in Hluhluwe-iMfolozi Park (HiP), South Africa. Camera traps and temperature sensors were used to monitor visitation and temperature on twenty-two grazing lawns across the park. Visibility analysis was also conducted to serve as a measure of horizontal cover or perceived predation risk. It was found that large bodied individuals, white rhino (Ceratotherium simum), were effected by temperature and responded temporally, where as small bodied individuals, impala (Aepyceros melampus), were effected by both temperature and predation risk with both a temporal and spatial response.

Main title:Hot, hungry, or dead
Subtitle:how herbivores select microhabitats based on the trade-off between temperature and predation risk
Authors:Vallance, Kristina
Supervisor:Cromsigt, Joris
Examiner:Spong, Göran
Series:Examensarbete i ämnet biologi / Sveriges lantbruksuniversitet, Institutionen för vilt, fisk och miljö
Volume/Sequential designation:2015:10
Year of Publication:2015
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:SM003 Management of Fish and Wildlife Populations - Master's Programme 120 HEC
Supervising department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Keywords:temperature, herbivores, savanna, predation risk, habitat selection
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Subject. Use of subject categories until 2023-04-30.:Animal ecology
Deposited On:13 Jul 2015 08:32
Metadata Last Modified:13 Jul 2015 08:32

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