Estimating carnivoran diets using a combination of carcass observations and scats from GPS clusters

Show simple item record Tambling, Craig J. Laurence, S.D. Bellan, S.E. Cameron, Elissa Z. Du Toit, Johan T. Getz, Wayne Marcus 2012-05-16T07:16:52Z 2013-02-28T00:20:04Z 2012-02
dc.description.abstract Scat analysis is one of the most frequently used methods to assess carnivoran diets, and global positioning system (GPS) cluster methods are increasingly being used to locate feeding sites for large carnivorans. However, both methods have inherent biases that limit their use. GPS methods to locate kill sites are biased towards large carcasses, while scat analysis overestimates the biomass consumed from smaller prey. We combined carcass observations and scats collected along known movement routes, assessed using GPS data from four African lion Panthera leo prides in the Kruger National Park, South Africa, to determine how a combination of these two datasets change diet estimates. As expected, using carcasses alone underestimated the number of feeding events on small species, primarily impala Aepyceros melampus and warthog Phacochoerus africanus, in our case, by more than 50%, and thus significantly underestimated the biomass consumed per pride per day in comparison with when the diet was assessed using carcass observations alone. We show that an approach that supplements carcass observations with scats that enables the identification of potentially missed feeding events increases the estimates of food intake rates for large carnivorans, with possible ramifications for predator–prey interaction studies dealing with biomass intake rate. en
dc.description.librarian ab2012 en
dc.description.sponsorship NIH Grant GM083863 (WMG) and a PhD NRF Grant to C.J. Tambling. en
dc.description.uri en
dc.identifier.citation Tambling, CJ, Laurence, SD, Bellan, SE, Cameron, EZ, Du Toit JT & Getz, WM 2012, 'Estimating carnivoran diets using a combination of carcass observations and scats from GPS clusters', Journal of Zoology, vol. 286, no. 2, pp. 1-24. en
dc.identifier.issn 1469-7998 (online)
dc.identifier.issn 0952-8369 (print)
dc.identifier.other 10.1111/j.1469-7998.2011.00856.x
dc.language.iso en en
dc.publisher Wiley-Blackwell en
dc.rights © 2011 The Authors. Journal compilation © 2011 The Zoological Society of London. This article is embargoed by the publisher until February 2013. en
dc.subject African savanna en
dc.subject Kruger National Park en
dc.subject Panthera leo en
dc.subject Lion en
dc.subject Predation en
dc.subject Prey consumption en
dc.subject.lcsh Carnivorous animals en
dc.subject.lcsh Diet en
dc.subject.lcsh Animal droppings en
dc.subject.lcsh Global Positioning System en
dc.title Estimating carnivoran diets using a combination of carcass observations and scats from GPS clusters en
dc.type Postprint Article en

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