Medium and large sized mammals of a semideciduous forest remnant in southern Brazil

Abstract

Knowledge about mammals of the Atlantic Forest is still lacking, especially because some places remain poorly studied or inventoried, which makes conservation initiatives difficult. We aimed to determine the species richness and composition of medium and large sized mammals in a semideciduous forest remnant, Morro do Coco, thus contributing information about the occurrence of mammalian fauna in the metropolitan region of Porto Alegre, southern Brazil. The methods consisted of interviews with local inhabitants, visual records and sand plot analysis. The study took place from July 2008 to April 2009, with monthly expeditions of three days. Sixteen species of mammals were recorded, seven of which are threatened with extinction in Rio Grande do Sul and one nationally. The predominant trophic group was the frugivorous/herbivorous. The study area is situated in a prioritized zone for the conservation of mammals in Greater Porto Alegre, since it consists of one of the last remnants where the phytophysionomies that originally occupied the edge of Guaiba Lake and granite hills of the region are represented and preserved.

Medium- and large-sized mammals in a steppic savanna area of the Brazilian Pampa: survey and conservation issues of a poorly known fauna

“…The species P. cancrivorus is naturally rare in some areas of its range and does not seem as adaptable to human activity, although it is considered stable throughout South America (Glatston, 1994). The rodent H. hydrochaeris occurs only in habitats close to water, including areas along rivers and streams (Eisenberg and Redford, 1999), and is generally more often found in anthropized places (Dias and Mikich, 2006;Negrão and Valladares-Pádua, 2006;Kasper et al, 2007a;Pires and Cademartori, 2012). This rodent is very common in the region, but few individuals were recorded in our survey, because there is a dam located adjacent to our study area, where the individuals are concentrated.…”

Padrões de uso de tocas por Mamíferos em área de Floresta Estacional Semidecidual no Sul do Brasil

“…(Backes, 2001). A área abrange um fragmento de aproximadamente .63 142 hectares cobertos por Floresta Estacional Semidecidual em estágio avançado de sucessão ecológica (Pires & Cademartori, 2012). A porção sul da área de estudo é delimitada pelo lago Guaíba.…”

Mamíferos de médio e grande porte de remanescentes de Floresta Estacional Decidual no Parque Estadual Fritz Plaumann e em áreas adjacentes, Sul do Brasil

“…O método de observação direta (visualização) e indireta (pegadas, fezes, pelos, tocas e restos mortais) foi empregado mensalmente em 2010, com duração de quatro dias consecutivos, através de percursos a pé, em transectos pré-existentes. Esse método de amostragem por busca visual tem sido amplamente utilizado em inventários mastofaunísticos (ABREU JUNIOR; KÖHLER, 2009;CHEREM et al, 2011;PIRES;CADEMARTORI, 2012). Para complementar a amostragem inicial, em outubro de 2012 foram realizadas duas campanhas amostrais, com duração de cinco e sete dias cada.…”

“…Entre os principais impactos sobre a biodiversidade de ecossistemas terrestres, estão a perda e fragmentação de hábitats, a caça e a introdução de espécies decorrentes das atividades antrópicas (PRIMACK;RODRIGUES, 2001;HOFFMANN et al, 2010;PIMM et al, 2014). Para os mamíferos terrestres, esses fatores também representam uma grave ameaça de extinção (COSTA et al, 2005).…”