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

Abstract

Medium and large-sized terrestrial mammals develop important functions in ecosystems maintenance. However, this group is the most vulnerable to local extinctions, through habitat loss or hunting. This study inventoried the community of medium and large mammals in the Reserva Ecológica de Guapiaçú (REGUA), Cachoeiras de Macacu, RJ, providing data on species composition, richness and abundance. Species were registered through the use of camera traps, sign survey and visual encounters on pre-existing trails and roads. The study was conducted from January to October 2012, with each month considered as a sample unit. An effort of 1568 cameras-day and 120 km traveled, resulted on 302 records of 22 species of medium and large-sized mammals, belonging to eight orders. This value corresponds to more than three-quarters of the richness described from this group in the Atlantic Forest of Rio de Janeiro state. Five species are under some level of regional, national or global threat. Three game species, Pecari tajacu, Cuniculus paca and Dasyprocta leporina were abundant in the area. The observed richness was comparable to that found in other studies conducted in rain forests. Thus, for its high number of species, including those under some degree of threat, we conclude that REGUA is an important area to mammal conservation, especially in the Atlantic Forest of Rio de Janeiro state.

Population Fluctuation of Coleobrocas (Coleoptera) in Six Forest Fragments in Atlantic Forest

“…It is known that the history of sampling areas and the surrounding area for the control area P06, is the pasture, therefore the ecosystems sampled were in a state of disclímax for decades, with ecological attributes: resilience, stability and elasticity, extremely reduced. Therefore, the practice of forest restoration was essential, in order to redeem the ecological functions of the ecosystem in Guapiaçu river basin (Carvalho et al, 2014). However the major Scolytinae population peaks in thesampled areas, in addition to their surge in the control area suggest that the ecosystem is still recovering its ecological attributes.…”

Mamíferos Do Parque Nacional Da Serra Dos Órgãos: Atualização Da Lista De Espécies E Implicações Para a Conservação

“…Tapirus terrestris era considerada relativamente comum na área do parque, particularmente nos campos de gramíneas de altitude onde há locais conhecidos até hoje como Campo das Antas e Vale das Antas (IBDF-FBCN 1980, Viveiros de Castro 2008. Não há registros recentes de T. terrestris na região da Serra dos Órgãos (Carvalho et al 2014, Travassos et al 2018, sendo os últimos registros formais de 1932 (Schirch 1932). Em relação à T. pecari, há o registro de um bando de 50 queixadas em área de mata virgem na região do parque em 1947 (Davis 1947).…”

“…Em relação à T. pecari, há o registro de um bando de 50 queixadas em área de mata virgem na região do parque em 1947 (Davis 1947). Tayassu pecari não foi registrada em um estudo realizado na REGUA, UC próxima ao PARNASO (Carvalho et al 2014), mas ainda pode ser encontrada na REBIO Tinguá (Travassos et al 2018). Desse modo, a ausência de registros dessas três espécies no PARNASO nos últimos 50 anos, apesar do exaustivo esforço de amostragem realizado, sugere que elas estejam localmente extintas.…”

Living and lost mammals of Rio de Janeiro's largest biological reserve: an updated species list of Tinguá

“…In Rio de Janeiro state, several mammal surveys found a high richness of small and medium species and the local extinction of large herbivores as Tapirus terrestris (Linnaeus, 1758), feeding guild specialists as Priodontes maximus (Kerr, 1792), Myrmecophaga tridactyla (Linnaeus, 1758) and top predators as Panthera onca (Linnaeus, 1758) (Araújo et al 2008, Modesto et al 2008a, 2008b, Delciellos et al 2012, Carvalho et al 2014, Aximoff et al 2015. As a result of these impacts many populations show low densities and changes in behavior and activity patterns (Di Bitetti et al 2008, Galetti et al 2016.…”

“…As a result of these impacts many populations show low densities and changes in behavior and activity patterns (Di Bitetti et al 2008, Galetti et al 2016. In most cases the Atlantic Forest mammal surveys are conducted with combined use of more than one sampling technique, such as camera traps surveys, interviews, linear transects and search by tracks and signs (Modesto et al 2008a, 2008b, Silva & Passamani 2009, Espartosa et al 2011, Delciellos et al 2012, Carvalho et al 2014. Most Atlantic Forest remnants are concentrated in the southeast region of Brazil, mainly in mountain hilltops of Serra do Mar.…”