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|Title:||Jaguar and puma activity patterns and predator-prey interactions in four Brazilian biomes|
|Author:||Foster, Vania C.|
Jácomo, Anah T. A.
Coefﬁcient of overlapping
Kernel density estimator
|Abstract:||Jaguars (Panthera onca) and pumas (Puma concolor) coexist throughout the Neotropics. Using camera trapping in four Brazilian biomes, we compare the daily activity patterns of the jaguar and puma, and their relationships with their main prey species. We used a kernel density method to quantify daily activity patterns and to investigate overlap between these predators and their main prey. Both cats showed intensive nocturnal and crepuscular activity (0.69 and 0.14 kernel density, respectively, for jaguars; 0.68 and 0.19 kernel density, respectively, for pumas). Only in the Pantanal did we observe a pattern of concentrated diurnal activity for both species. We found little temporal segregation between jaguars and pumas, as they showed similar activity patterns with high coefﬁcients of overlapping (average Δ1 = 0.86; SE = 0.15). We also observed a signiﬁcant overlap between the activity patterns of the predators and their main prey species, suggesting that both predators adjust their activity to reduce their foraging energy expenditure. Our ﬁndings suggest that temporal partitioning is probably not a generalized mechanism of coexistence between jaguars and pumas; instead, the partitioning of habitat/space use and food resources may play a larger role in mediating top predator coexistence. Knowledge about these behavior aspects is crucial to elucidating the factors that enable coexistence of jaguars and pumas. Furthermore, an understanding of their respective activity periods is relevant to management and associated research efforts.|
|Appears in Collections:||CESAM - Artigos|
DBio - Artigos
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|Foster et al. - 2013 - Jaguar and Puma Activity Patterns and Predator-Pre.pdf||270.55 kB||Adobe PDF|
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