Spatial distribution of lion kills determined by the water dependency of prey species

Predation risk from lions (Panthera leo) has been linked to habitat characteristics and availability and traits of prey. We separated the effects of vegetation density and the presence of drinking water by analyzing locations of lion kills in relation to rivers with dense vegetation, which offer goo...

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Vydáno v:	Journal of mammalogy Ročník 91; číslo 5; s. 1280 - 1286
Hlavní autoři:	de Boer, Willem F., Vis, Marc J. P., de Knegt, Henrik J., Rowles, Colin, Kohi, Edward M., van Langevelde, Frank, Peel, Mike, Pretorius, Yolanda, Skidmore, Andrew K., Slotow, Rob, van Wieren, Sipke E., Prins, Herbert H. T.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Illinois Natural History Survey, 1816 South Oak Street, Champaign, IL 61820 American Society of Mammalogists 15.10.2010 Allen Press Publishing Services Allen Press Oxford University Press
Témata:	abundance african herbivores Animal and plant ecology Animal, plant and microbial ecology behavior Biological and medical sciences Body size body weight Connochaetes taurinus Digestion Drinking water Ecosystems FEATURE ARTICLES Feeding Food habits Food preferences Fundamental and applied biological sciences. Psychology Habitat Habitat conservation habitat selection Herbivores hunting success kruger-national-park Lions Nature reserves Normalized Difference Vegetation Index (NDVI) Panthera leo population-dynamics Predation predation risk Prey prey availability prey composition randomization River water Rivers Ruminantia Ruminants savanna Seasonal variations serengeti Spatial distribution Sulfur dioxide Syncerus caffer Synecology Terrestrial ecosystems Tragelaphus strepsiceros Vegetation Vegetation effects vulnerability Wildebeest Wildlife ecology South Africa Availability Fissipedia Carnivora Panthera leo Savannah prey composition Vulnerability Capture Prey body weight Heterogeneity Vertebrata Mammalia Spatial distribution randomization Vegetation savanna Normalized Difference Vegetation Index (NDVI) prey availability Artiodactyla Predator Ungulata Water resources
ISSN:	0022-2372, 1545-1542
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Shrnutí:	Predation risk from lions (Panthera leo) has been linked to habitat characteristics and availability and traits of prey. We separated the effects of vegetation density and the presence of drinking water by analyzing locations of lion kills in relation to rivers with dense vegetation, which offer good lion stalking opportunities, and artificial water points with low vegetation density. The spatial distribution of lion kills was studied at the Klaserie Private Nature Reserve, South Africa. The distance between 215 lion kills and the nearest water source was analyzed using generalized linear models. Lions selected medium-sized prey species. Lion kills were closer to rivers and to artificial water points than expected by random distribution of the kills. Water that attracted prey, and not the vegetation density in riverine areas, increased predation risk, with kills of buffalo (Syncerus caffer), kudu (Tragelaphus strepsiceros), and wildebeest (Connochaetes taurinus) as water-dependent prey species. Traits of prey species, including feeding type (food habits), digestion type (ruminant or nonruminant), or body size, did not explain locations of lion kills, and no seasonal patterns in lion kills were apparent. We argue that the cascading impact of lions on local mammal assemblages is spatially heterogeneous.
Bibliografie:	SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-2 content type line 23
ISSN:	0022-2372 1545-1542
DOI:	10.1644/09-MAMM-A-392.1