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Dieta e uso de habitats por mamíferos carnívoros em mosaico formado por remanescentes de floresta atlântica e plantios florestais / Diet and habitat use by mammalian carnivores mosaic Formed by remnants of Atlantic forest and plantations forestCzarnobai, Simone 14 December 2012 (has links)
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Previous issue date: 2012-12-14 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Understanding the coexistence of sympatric carnivores in disturbed environments requires knowing
the way these predators share food resources. In this study, we investigated the diet of nine carnivore species
that occur in a mosaic composed of Atlantic forest remnants and forest plantations in southern Brazil.
Between 2006 and 2008 1038 fecal samples were collected along five 6 km transects that were established to
sample the habitat diversity of the study area. The relatively high percentage (49.5%) of fecal samples
identified to species level is due to a modification of the proposed methodology for the separation of guardhairs,
as described herein. Mammalian prey was predominant on the diet of all carnivores studied, followed
by birds. The food categories "reptiles", "fish", "vegetable" (fruits and seeds) and "invertebrates" were
consumed occasionally. Niche breadth showed that felids are specialists in mammals and diet overlap was
almost complete among this family. Nevertheless, such results could change if food categories were
identified to lower taxonomic levels / Compreender a coexistência de carnívoros simpátricos em ambientes alterados pelo homem requer
conhecer a forma com que esses predadores partilham os recursos alimentares. Neste estudo, nós
investigamos a dieta de nove carnívoros que ocorrem em um mosaico composto por remanescentes de
Floresta Atlântica e plantios florestais no Sul do Brasil. Entre 2006 e 2008 foram coletadas 1038 amostras
fecais em cinco transectos de 6 km estabelecidos para amostrar a diversidade de ambientes da área de estudo.
Os mamíferos predominaram na dieta de todos os carnívoros estudados, seguidos de aves. As categorias
répteis , peixes , vegetais (frutos e sementes) e invertebrados foram consumidas esporadicamente. A
amplitude do nicho revelou que os felinos são especialistas em mamíferos e a sobreposição da dieta é quase
completa dentro dessa família. No entanto, esses resultados podem mudar caso as presas sejam identificadas
em níveis taxonômicos mais baixos
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