Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/14684
Título: Fine-scale habitat segregation between two ecologically similar top predators
Autor: Palomares, F.
Fernández, Néstor
Roques, Séverine
Chávez, Cuauhtémoc
Silveira, Leandro
Keller, Claudia
Adrados, Begoña
Palavras-chave: Controlled Study
Ecological Niche
Ecological Phenomena And Functions
Feces Analysis
Fine Scale Habitat Use Segregation
Habitat Use
Intraspecific Competition
Jaguar
Nonhuman
Population Abundance
Prediction
Puma
Risk Assessment
Risk Factor
Segregation Analysis
Species Difference
Animals
Ecosystem
Feces
Female
Genetics
Male
Meta Analysis
Panthera
Phylogeography
Physiology
Predation
Animalss
Ecosystem
Feces
Female
Male
Panthera
Phylogeography
Predatory Behavior
Puma
Data do documento: 2016
Revista: PLoS ONE
É parte de: Volume 11, Número 5
Abstract: Similar, coexisting species often segregate along the spatial ecological axis. Here, we examine if two top predators (jaguars and pumas) present different fine-scale habitat use in areas of coexistence, and discuss if the observed pattern can be explained by the risk of interference competition between them. Interference competition theory predicts that pumas should avoid habitats or areas used by jaguars (the dominant species), and as a consequence should present more variability of niche parameters across study areas. We used non-invasive genetic sampling of faeces in 12 different areas and sensor satellite finescale habitat indices to answer these questions. Meta-analysis confirmed differences in fine-scale habitat use between jaguars and pumas. Furthermore, average marginality of the realized niches of pumas was more variable than those of jaguars, and tolerance (a measure of niche breadth) was on average 2.2 times higher in pumas than in jaguars, as expected under the interference competition risk hypothesis. The use of sensor satellite fine-scale habitat indices allowed the detection of subtle differences in the environmental characteristics of the habitats used by these two similar top predators, which, as a rule, until now were recorded using the same general habitat types. The detection of fine spatial segregation between these two top predators was scale-dependent. © 2016 Palomares et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI: 10.1371/journal.pone.0155626
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo-inpa.pdf537,78 kBAdobe PDFThumbnail
Visualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons