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| Astete, S.; Marinho-Filho, J.; Machado, R.B.; Zimbres, B.; J como, A.T.A.; Sollmann, R.; T“rres, N.M.; Silveira, L. | |
| Living in extreme environments: modeling habitat suitability for jaguars, pumas, and their prey in a semiarid habitat | |
| 2017 Journal of Mammalogy (98): 464-474 | |
Carnivores and their prey occurring at the extremes of their ecological niches face particular constraints in terms of habitat suitability (HS). We combined the use of camera traps and Ecological Niche Factor Analysis (ENFA) to calculate HS for jaguars (_Panthera onca_), pumas (_Puma concolor_), and 4 prey species (3-banded armadillos, _Tolypeutes tricinctus_; 9-banded armadillos, _Dasypus novemcinctus_; collared peccaries, _Pecari tajacu_; and gray brocket deer, _Mazama gouazoubira_) in Serra da Capivara National Park (SCNP), located in the semiarid Caatinga biome of Brazil. We also evaluated HS in relation to water management applied in the Park since 1994. Considering the physiological limitations of the Caatinga's species, we used an "edge of niche" habitat-suitability algorithm. For all species examined, distance to waterholes was the ecogeographical variable with the greatest contribution for the ENFA. Water management implemented in SCNP helps to ensure the persistence of predators and prey species, since the combination of topographic characteristics and location of waterholes explained most of HS for the analyzed species. |
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