Arid
DOI10.1007/s10980-009-9425-x
How key habitat features influence large terrestrial carnivore movements: waterholes and African lions in a semi-arid savanna of north-western Zimbabwe
Valeix, Marion1,2; Loveridge, Andrew J.1; Davidson, Zeke1; Madzikanda, Hillary3; Fritz, Herve2; Macdonald, David W.1
通讯作者Valeix, Marion
来源期刊LANDSCAPE ECOLOGY
ISSN0921-2973
EISSN1572-9761
出版年2010
卷号25期号:3页码:337-351
英文摘要

Within a landscape where prey has an aggregated distribution, predators can take advantage of the spatial autocorrelation of prey density and intensify their search effort in areas of high prey density by using area-restricted search behaviour. In African arid and semi-arid savannas, large herbivores tend to aggregate around scarce water sources. We tested the hypothesis that water sources are a key determinant of habitat selection and movement patterns of large free-ranging predators in such savannas, using the example of the African lion. We used data from 19 GPS radio-collared lions in Hwange National Park, Zimbabwe. Maps of lions’ trajectories showed that waterholes are key loci on the lions’ route-maps. Compositional analyses revealed that lions significantly selected for areas located within 2 km of a waterhole. In addition, analysis of lions’ night paths showed that when lions are close to a waterhole (< 2 km), they move at lower speed, cover shorter distances per night (both path length and net displacement) and follow a more tortuous path (higher turning angle, lower straightness index and higher fractal dimension) than when they are further from a waterhole. Hence, our results strongly suggest that lions adopt area-restricted searching in the vicinity of waterholes, and reduce their search effort to minimize the time spent far from a waterhole. They provide an illustration of how key habitat features that determine the dispersion of prey (e.g. waterholes in this study) have an influence on the spatial ecology and movement patterns of terrestrial predators.


英文关键词Area-restricted search Compositional analysis Fractals Habitat selection Hwange National Park Landscape structure Panthera leo Path tortuosity
类型Article
语种英语
国家England ; France ; Zimbabwe
收录类别SCI-E
WOS记录号WOS:000275122600002
WOS关键词FOOD SEARCHING BEHAVIOR ; AREA-RESTRICTED SEARCH ; KRUGER-NATIONAL-PARK ; 2 EUROPEAN THRUSHES ; ANIMAL MOVEMENT ; HOME-RANGE ; SELECTIVE PREDATION ; LANDSCAPE ; PATTERNS ; HETEROGENEITY
WOS类目Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Environmental Sciences & Ecology ; Physical Geography ; Geology
来源机构University of Oxford
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/165575
作者单位1.Univ Oxford, Dept Zool, Wildlife Conservat Res Unit, Abingdon OX135QL, Oxon, England;
2.Univ Lyon 1, CNRS, Lab Evolutionary Biometry & Biol, UMR 5558, F-69622 Villeurbanne, France;
3.Zimbabwe Pk & Wildlife Management Author, Harare, Zimbabwe
推荐引用方式
GB/T 7714
Valeix, Marion,Loveridge, Andrew J.,Davidson, Zeke,et al. How key habitat features influence large terrestrial carnivore movements: waterholes and African lions in a semi-arid savanna of north-western Zimbabwe[J]. University of Oxford,2010,25(3):337-351.
APA Valeix, Marion,Loveridge, Andrew J.,Davidson, Zeke,Madzikanda, Hillary,Fritz, Herve,&Macdonald, David W..(2010).How key habitat features influence large terrestrial carnivore movements: waterholes and African lions in a semi-arid savanna of north-western Zimbabwe.LANDSCAPE ECOLOGY,25(3),337-351.
MLA Valeix, Marion,et al."How key habitat features influence large terrestrial carnivore movements: waterholes and African lions in a semi-arid savanna of north-western Zimbabwe".LANDSCAPE ECOLOGY 25.3(2010):337-351.
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