Non-volant mammals from Domingos Martins municipality , state of Espírito Santo , southeastern Brazil

The goal of this study was to contribute to the knowledge of the mammals in the state of Espirito Santo, presenting a list to the Domingos Martins municipality. Regarding the mammals inventory, data obtained from field work and through digital search by species deposited in scientific collections and available on the SpeciesLink database were used. We recorded 47 non-volant mammal species, including 12 endemic in the Atlantic Forest and nine listed as threatened. Domingos Martins, despite being undersampled when compared to other mammals inventories in the state of Espirito Santo, represents 57% of the terrestrial mammals listed in the state. This shows the potential of the municipality in relation to mammal conservation, not only in the state, but also for Atlantic Forest biome.


Introduction
The Atlantic Forest has been subject to anthropogenic pressure since early European colonization, mainly because this vegetation occupies the east coastal area from most of the South American continent (Dean, 1996).The process of colonization, occupation and, finally, industrialization of the Brazilian territory has resulted in a highly fragmented landscape, where most of forest remnants are smaller than 50 ha and isolated (Dean 1996;Ribeiro et al. 2009).
The list of Brazilian mammals currently includes 701 species, of which 298 occur in the Atlantic Forest (Paglia et al. 2012).Of those, 90 species are endemic (Paglia et al. 2012) and 69 are considered endangered according to the International Union for the Conservation of Nature (IUCN) classification (Machado et al. 2008).
The state of Espírito Santo, located in southeastern Brazil, was originally covered by approximately 90% of Atlantic Forest (Thomaz 2010).Currently this state has only 8% left of its original Atlantic Forest cover (Pereira 2007;Fundação SOS Mata Atlântica 2010) that is represented mainly by small isolated forest patches, and located on private properties (Passamani et al. 2000).Nevertheless, this state lies in a highly diverse area for mammals, harboring about 50% of the mammal species that occur in the Atlantic Forest (Moreira et al. 2008).Moreover, this number probably will increase, since many localities in this state have never been sampled or were undersampled (Moreira et al. 2008).
Considering the relevance of the state of Espirito Santo of mammal diversity and the high level of fragmentation of their remnants (Passamani et al. 2000;Thomaz 2010), the goal of our study was to fill gaps in the current knowledge of mammal occurrence and distribution in this state, presenting a terrestrial mammal inventory for specimens deposited in scientific collections (see Appendix 1) through information available at the SpeciesLink digital database with the same keywords (Centro de Referência em Informação Ambiental - CRIA).Also, we consider the non-published data from the Pedra Azul State Park management plan.

Field sample
We conducted field work in the forest fragments at Morro do Chapéu (20°16′ S, 40°38′ W).The data were obtained in two samples -from November 2010 to February 2011 and from March 2013 to June 2013 -using four camera traps (Bushnell trophy cam 8mp).We installed the camera traps on tree trunks at approximately 45cm from the ground, in four different fragments approximately two kilometers apart from one another (20°16′46″ S, 40°38′ 25″ W AF 1; 20°19′45″ S, 40°40′53″ W AF 2; 20°22′44″ S, 40°40′29″ W AF 3; 20°16′53″ S, 40°51′15″ W AF 4, Figure 1).The cameras were installed 200m from the unofficial roads inside forest fragments where we previously found mammal tracks.The camera traps obtained data during 80 days, operating 24 hours/day, for approximately 10 days of monthly effort.We used baits to attract mammal species.These baits were made of bacon, pineapple and catnip and placed separately near each camera.We also performed diurnal and nocturnal censuses for species by performing active searches along unofficial roads, and including records considering visual sights, vocalization, tracks and feces.The tracks and feces were identified using field guides (Becker and Dalponte 1991;Carvalho-Junior and Luz 2008).The total sampling effort for the camera traps was 320 trap*days, each fragment having a total sampling effort of 80 trap*days and we covered a total of 165km in the surveys.

Data Analysis
For the taxonomic arrangement and to identify Atlantic Forest endemics, we followed the Annotated Checklist of Brazilian Mammals (Paglia et al. 2012).The threat status of each species was defined using the IUCN red list for classification for the global status (IUCN 2012), the Brazilian Red List of Endangered Species (Machado et al. 2008) for the national status and the Threatened Species List of the state of Espírito Santo (Chiarello et al. 2007) for the local status.

Results
We registered 47 native species of mammals distributed in eight orders.The most diverse order was Rodentia, with 14 species, Carnivora (12 species), Didelphimorphia (7) and Primates (5) (Table 1).We also registered two exotic species, both from the order Carnivora (Canis lupus familiaris and Felis catus).
We highlight the presence of nine species included in the red list (Table 1, Figure 2).Among them, five are threatened at a global scale, and nine species at national level.Yet, the sampled areas harbor eight species included in the red list from Espírito Santo state (Figure 2

Discussion
Considering that the state of Espírito Santo has 84 species of non-volant mammals (Moreira et al. 2008), approximately 56% of species listed for the state occur at Domingos Martins municipality.Also, this municipality harbors almost 80% of the mammals recorded in the Santa Teresa municipality, which has the highest mammal richness registered in the state with 62 species (Passamani et al. 2000).Considering that Santa Teresa was intensively sampled for long-term studies (see Passamani 2000;Passamani et al. 2000;Srbek-Araújo and Chiarello 2005), this result demonstrates that the Domingos Martins municipality could play an important role at conservation strategies and is also a potential area where a high mammal richness can be found.Also, the number of mammal species recorded in Domingos Martins will surely increase expressively, since our inventory did not sample the order Chiroptera, which represents one of the richest group in the state of Espirito Santo (Moreira et al. 2008) and in the whole Atlantic Forest as well (Paglia et al. 2012).
Most of the threatened species listed in the present study are included in the lowest threat category considering the local scale.Besides, these species were recorded, in Espírito Santo and in other Atlantic Forest sites, in most of the forested landscapes and large fragments (Chiarello et al., 2008).Also, these species are dependent on native forest and large forest fragments to hold viable populations, like the wild cats (Oliveira 1998;Michalski et al. 2006;Chiarello, 1999) and primates (Michalski and Peres 2005).More importantly, these data shows that the conservation status of these species can be replaced to a better one if actions to restore and connect isolated forest remnants be implemented as soon as possible in the state.The record of several endemic species demonstrates the importance of the municipality -which has 24% of its territory covered by Atlantic Forest remnants (Fundação SOS Mata Atlântica 2010)-for mammal conservation, since endemism have been commonly used as an important criteria when choosing areas for the purpose of species conservation (Prevedello and Carvalho 2006).
Our findings showed that Domingos Martins municipality has a high richness of non-volant mammals, despite being undersampled in relation to mammals.This demonstrates the potential of the municipality to harbor a high diversity of mammals in the state of Espírito Santo and consequently its importance to conservation strategies regarding mammals not only in the local scale, but for the whole Atlantic Forest.

Figure 1 .
Figure 1.Location of Domingos Martins municipality in the Espírito Santo state, Brazil.Small scale maps highlights the sampled points to mammals record.

Table 1 .
Chiarello et al. 2007mmals species Domingos Martins municipality with their respective category of threat and types of records.Categories of threat of extinction: Endangered -EN, vulnerable -Vu and critically endangered -CR according to the global list of IUCN 2012; the national list (BR)Machado et al. 2008and the List of Threatened Species of the Espírito Santo state (ES)Chiarello et al. 2007.Sampling methods: footprints (FP), camera traps by location 1, 2, 3 and 4 (CT), feces (Fe), sighting (Si), vocalization (Vo), scientific collection (SC) and data obtained from Pedra Azul State Park management plan (MP).*Exotic species not included in the total percentage of native species calculated for the municipality of Domingos Martins (ES).