Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 0921-2973 |
EISSN | 1572-9761 |
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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