Mamíferos não voadores (Mammalia) da Estação Ecológica Serra Geral do Tocantins

Abstract

Abstract:The terrestrial mammal community was surveyed along three distinct localities (1-Mateiros, TO; 2-Rio da Conceição, TO e 3-Formosa do Rio Preto, BA) in the Estação Ecológica Serra Geral do Tocantins. The small non-volant mammals were recorded by the use of conventional live traps (5,396 trap.nights) and pitfall traps (5,300 trap.nights) in the different physiognomies found, such as: "campo úmido", "campo limpo", "campo sujo", "campo cerrado", "cerrado sensu stricto", "cerrado sensu stricto with rocks", gallery forest and wet gallery forest. The large mammals were casually registered by visual or indirect evidences (tracks, feces, carcasses). We recorded 24 small non-volant mammals and 17 large mammals, totalizing 41 species for this region. The small mammal community was characterized by several rare and intermediate in abundance species, and few species very abundant. Rodents from the family Cricetidae dominated both in number of species (14) as in number of individuals (50% of the community). The species segregated among the forested and open formations, showing the great habitat selectivity and the importance to survey the habitat mosaic to characterize the diversity of this mammal group. The small non-volant mammal fauna surveyed showed some overlap with the fauna from the Caatinga and Amazon biomes, demonstrating the importance of these biomes in the faunal composition of the communities localized in the northern portion of the Cerrado. In addition, we also recorded endemic species and species with a restricted distribution to this north portion, characterizing a distinct community within the Cerrado. The large mammal community was characterized by a high number of threatened species (10), increasing the importance of this region in preserving the fauna of the northern portion of the Cerrado. Resumo: A comunidade de mamíferos terrestres foi amostrada em três localidades (1-Mateiros, TO; 2-Rio da Conceição, TO e 3-Formosa do Rio Preto, BA) no interior da Estação Ecológica Serra Geral do Tocantins. Para o registro dos marsupiais e pequenos roedores foram utilizadas armadilhas convencionais (5.396 armadilhas. noite) e armadilhas de queda (5.300 pitfalls.noite) nas diferentes fitofisionomias encontradas, entre elas: campo úmido, campo limpo, campo sujo, campo cerrado, cerrado sensu stricto, cerrado com afloramentos rochosos, mata de galeria e mata de galeria úmida. No caso dos mamíferos de médio e grande porte, foram obtidos registros casuais através de observação direta e evidências indiretas (rastros, fezes, crânios e carcaças de animais encontrados mortos). Foram amostradas 24 espécies de pequenos mamíferos e 17 espécies de mamíferos de médio e grande porte, totalizando 41 espécies para a região. Considerando-se os pequenos mamíferos, a comunidade foi representada por várias espécies raras e de abundância intermediária, e poucas espécies muito abundantes. Os roedores cricetídeos dominaram tanto em número de espécies (14) quanto em abundância (50% da comunidade). As espécies se distribuíram, basicamen...

Mammal richness and diversity in Serra do Facão region, Southeastern Goiás state, central Brazil

“…Large mammals -We recorded 33 large mammals species (Table 1, Supplement 4), a richness higher than the sum of richness found in three Protected Areas in Brasília (n ¼ 25) (Juarez 2008). Other studies also carried out in other cerrado regions, including Protected Areas (Marinho-Filho et al 1998, Schneider 2000, Brito et al 2001, Moreira et al 2008, Oliveira et al 2009, Bocchiglieri et al 2010, Carmignotto & Aires 2011, Alves et al 2014, recorded 10 to 39 species of large mammals (Table 2). However, any comparison on large mammal richness between areas is limited because there is not a standard methodology used in different studies and the sampling efforts performed for this group in different studies are also very different.…”

“…This pattern is expected for the cerrado biome (Marinho-Filho et al 2002). Considering studies in Protected Areas of cerrado and those that make use of pitfalls in addition to conventional traps, the richness of small non-flying mammals ranged from 19 to 29 species (Schneider 2000, Marinho-Filho et al 2002, Pereira & Geise 2009, Carmignotto & Aires 2011, Bonvicino et al 2012). This richness is similar (or even large) than our study, despite our larger sample effort ( Table 2).…”

Seasonally flooded stepping stones: emerging diversity of small mammal assemblage in the Amazonia-Cerrado ecotone, central Brazil

“…Carmignotto 2005;Gardner 2008;Paglia et al 2012). Their richness and diversity are related to the habitat heterogeneity and complexity and have been used to understand both ecological and biogeographic patterns of Cerrado (e.g.…”

“…Their richness and diversity are related to the habitat heterogeneity and complexity and have been used to understand both ecological and biogeographic patterns of Cerrado (e.g. Carmignotto 2005). Several studies have been conducted to understand the impact of fragmentation on small mammal communities in Cerrado (e.g.…”

Non-volant small mammals at an Atlantic forest area situated nearby a limestone quarry (Limeira quarry), state of São Paulo, Brazil

“…Such pattern is common among natural communities (Magurran 2004), including small mammal assemblages in cerrado and Atlantic Forest areas (Bonvicino et al 2002, Carmignotto & Aires 2011. Equability values may work as proxies to community conservation status, since disturbed areas usually present low values due to dominance by a few disturbance-tolerant species that manage to proliferate in altered sites (Bonvicino et al 2002).…”