Registros de mamíferos de maior porte na Reserva Florestal do Morro Grande, São Paulo

Abstract

Large mammals are known to be important for the maintenance of biological processes and diversity and to be highly susceptible to extinction in fragmented landscapes. However, there are few studies focusing on the community of large mammals in Atlantic Forest remnants. This study aims at surveying large mammals in a remnant of Atlantic forest near to São Paulo. The studied area is the Morro Grande Forest Reserve (RFMG), with 10.870 ha, located in the municipality of Cotia, SP. Seven areas inside the RFMG were studied with two methodologies: 1) line transect sampling and 2) sand plots for footprint recording. Others records of mammal species were also considered. Eighteen species of seven orders were found in the Reserve and were classified in four dietary categories being eight omnivorous, five herbivore, four frugivores and just one carnivorous. The line transect sampling recorded six species of three orders and footprint sampling recorded seven species of five orders. The smaller species, as the squirrel (Sciurus aestuans), the opossum (Didelphis aurita) and the brazilian rabbit (Sylvilagus brasiliense), were the most frequently recorded, and they were present in almost all the study's areas. The prevalence of smaller species and, the presence of some generalist species, indicate the high degree of disturbance and the low quality of this Reserve. The Reserva Florestal do Morro Grande do not maintain the integrity of large mammal community.

Survey of large and medium-sized terrestrial mammals in the Serra do Brigadeiro State Park, Minas Gerais, Brazil

“…Domestic dogs can also be vectors of diseases such as rabies, leishmaniasis, distemper, and parvovirus that could compromise wild populations (Cleveland et al 2000). Finally, domestic dogs compete directly with the local wildlife for resources and they may displace native species from their habitats (Negrão and Valladares-Pádua 2006). Some species that are common in surveys of large and medium-sized mammals were not registered in this study, such as the armadillos Dasypus novemcinctus and Euphractus sexcinctus (Cingulata -Chiarello 2000).…”

A regeneração florestal em áreas de floresta secundária na Reserva Florestal do Morro Grande, Cotia, SP

“…De qualquer forma, isso sugere uma divergência potencial na composição futura do dossel dentro dessas áreas de floresta secundária. Apesar de que muitas aves e mamíferos de grande e médio porte já terem desaparecido da RFMG (Develey & Martensen 2006, Negrão & Valladares-Pádua 2006, como as sensíveis à caça e os frugívoros de dossel, mesmo assim ela abriga uma alta diversidade de espécies de aves, principalmente as frugívoras de sub-bosque (Develey & Martensen 2006). Como grande parte das espécies de aves frugívoras encontradas no sub-bosque de florestas tropicais parece ser importante na dispersão de frutos pequenos e abundantes de espécies de plantas lenhosas do sub-bosque (Stiles 1985), a alta abundância desse grupo na RFMG (Develey & Martensen 2006) pode ter contribuído para a manutenção da chuva de sementes imigrantes.…”

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

“…The difficulties related to the study of these animals are due to their furtive habits (Reis et al 2006, Barea-Azcó n et al 2007, and habitat requirements (Sanderson et al 2002b, BareaAzcó n et al 2007 Goulart et al 2009, Carvalho et al 2013, and their combined use with other sampling techniques as footprint traps, linear transects and sign surveys (Passamani et al 2005, Negrã o & Valladares-Pá dua 2006, Spínola 2008, Modesto et al 2008a, Silva & Passamani, 2009, Espartosa et al 2011, Delciellos et al 2012) have favored studies with this group. However, due to be a recent approach, several areas still represents knowledge gaps for this group, especially in the Rio de Janeiro state (Cunha 2004, Modesto et al 2008a,b, Delciellos et al 2012.…”