Mammal inventories in Seasonal Neotropical Forests: traditional approaches still compensate drawbacks of modern technologies

Carvalho, William Douglas de; Rosalino, Luís Miguel; Adania, Cristina Harumi; Esbérard, Carlos Eduardo Lustosa

doi:10.1590/1678-4766e2016005

Cited by 8 publications

(11 citation statements)

References 33 publications

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“…The combination of different sampling methods (e.g., camera trap, census, and trail search) proved to be efficient at recording considerable species richness in a short sampling period, which reinforces the importance of combining different methodologies to increase sampling success. According to Carvalho et al (2016), the most efficient methods to sample medium-and large-sized mammals involved searching for indirect (footprints, feces, and burrows) and direct (observation) records. Both in our study and in Carvalho et al (2016), camera traps recorded approximately half of the species found by other methods, indicating the need for methodological variability for survey studies.…”

Section: Discussionmentioning

confidence: 99%

“…According to Carvalho et al (2016), the most efficient methods to sample medium-and large-sized mammals involved searching for indirect (footprints, feces, and burrows) and direct (observation) records. Both in our study and in Carvalho et al (2016), camera traps recorded approximately half of the species found by other methods, indicating the need for methodological variability for survey studies. Still, the use of camera traps is an important methodology for recording cryptic and less abundant species, which are rarely detected by other methods (Melo et al 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Still, the use of camera traps is an important methodology for recording cryptic and less abundant species, which are rarely detected by other methods (Melo et al 2012). In long-term studies, the use of camera traps is extremely advantageous, since it is the cheapest method, does not require the presence of a researcher during sampling and increases the chances of correctly identifying species compared to footprints (Carvalho et al 2016). Mazza et al (2018), in a study in RPPN Alto-Montana in southern Minas Gerais, continuously used camera traps for three years and recorded 21 native and four exotic species of medium-and large-sized mammals.…”

Section: Discussionmentioning

confidence: 99%

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Mammals of medium and large size in Cerrado remnants in southeastern Brazil

Laurindo¹,

Toledo²,

Teixeira³

2019

NBC

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The Cerrado is the second largest biome in Brazil and considered a global biodiversity hotspot due to its high species richness, elevated amount of endemisms, and several anthropogenic threats. The Cerrado has more than 250 species of mammals, and about 15% are endemic. However, fragmentation and the consequent loss of native habitat threaten the maintenance of mammalian populations. In this context we carried out an inventory of medium- and large-sized mammals in Cerrado remnants in Matutina, Minas Gerais, southeastern Brazil. Sampling was performed in four remnants of Cerrado and adjacent agricultural matrices for 18 days and 16 nights in March and July 2015 with camera traps, diurnal and nocturnal censuses, and by searching for tracks and other indirect evidence. We recorded 19 species of mammals, including top predators and species vulnerable to extinction. The original vegetation cover in the study area has become severely reduced and fragmented due to agricultural expansion. However, the remnants still retain considerable diversity of medium- and large-sized mammals, making them important for the maintenance of biological diversity.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Mammals of medium and large size in Cerrado remnants in southeastern Brazil

Laurindo¹,

Toledo²,

Teixeira³

2019

NBC

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“…Positioning camera traps along such trails may increase capture success rates. The short-term effectiveness of camera traps may be questionable for detection of species (Carvalho, Rosalino, & Esbérard, 2016), because not all species that occur in a given area will be photo-captured quickly. The capture success rate of 0.187 photos/trap-day could be considered ineffective for a short period, but over many years of study it was sufficient to enable identification of 21 of the 30 species of medium and large mammals that occur in the Araucaria High Plains (Marques, Cademartori, & Pacheco, 2011).…”

Section: Discussionmentioning

confidence: 99%

<b>Diversity of medium and large neotropical mammals in an area of mixed rain forest

Marques¹,

Fabián²

2018

Acta Sci. Biol. Sci.

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Medium and large mammals (> 1 kg) were studied using camera traps with active sensors in a Conservation Unit located in an area of Mixed Rain Forest or Araucaria Forest (Atlantic Forest at altitude) in the South of Brazil, as a method for investigating the area's conservation status and enabling comparison with other types of environments in which these mammals occur in the Neotropical region. From June 2005 to December 2010, a sampling effort of 10,844 trap-days yielded records of 21 species. A minimum sampling effort of 3000 trap-days was necessary to obtain records of all of these species. The species with the greatest frequency of photocaptures was Dasyprocta azarae (agouti), followed by Leopardus pardalis (ocelot), Leopardus guttulus (southern oncilla or little spotted cat) and Dasypus novemcinctus (nine-banded armadillo). The species with the lowest numbers of records were Pecari tajacu (collared peccary) and Chrysocyon brachyurus (maned wolf). Although the Conservation Unit studied has small physical dimensions, the diversity of species of medium and large mammals was comparable with what has been observed in other types of forests, in particular because there are still effective biological corridors in the area.

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“…The transects were walked by two pairs of researchers, who were able to walk all the ten transects within a day. Each transect was surveyed for 40 days (see Carvalho et al, 2016 for a complete description of the methods).…”

Section: Atlantic Forest Mammalsmentioning

confidence: 99%

Optimal inventorying and monitoring of taxonomic, phylogenetic and functional diversity

Cardoso

et al. 2016

Preprint

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1.Inventorying requires comprehensive sampling, while monitoring should build on it and focus on as few components as possible to detect changes in time or space. To sample or acquire information for both purposes can therefore be viewed as different processes, herewith called α-sampling and β-sampling. Biodiversity covers species, their genetic diversity and the way they interact in communities and ecosystems. Quantifying these aspects leads to the need to study taxon (TD), phylogenetic (PD) and functional diversity (FD). Here we propose and test a method for the optimization of sampling protocols to inventorying and monitoring TD, PD and FD for a wide range of taxa.2. We used spiders as a case-study, although the same optimization procedure could be applied to any taxon requiring a combination of sampling methods. Spiders were sampled in multiple sites in the Iberian Peninsula. PD and FD were measured as the sum of the length of branches on a phylogenetic or functional tree. To reach the optimal combination of methods for inventory, we followed an iterative procedure optimizing the accumulation curve of diversity values. Optimal monitoring in space or time required minimizing the difference between sampled and true β-diversity. We used a framework that disentangles species replacement and richness differences contributions to overall β-diversity.3. For α-diversity, the optimal combination of 24 samples for TD, PD and FD allowed sampling more than 50% of real diversity. For β-diversity, the optimal combination of six samples for all measures allowed reaching a bias (difference between sampled and true diversity) below 0.08. 4. The widespread use of similar sampling protocols worldwide and regular repetition in time can have a major impact on the scope and usefulness of global monitoring projects. In addition, the comparable sampling of biodiversity in space and/or time allows reusing of data collected for specific purposes, potentiating a synergistic effect among different projects. This makes data useful much beyond their initial plan. We strongly advocate the optimization, standardization and widespread adoption of sampling protocols for all taxa at a global level, for both inventory and monitoring of all levels of biodiversity: taxon, phylogenetic and functional. 2

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Mammal inventories in Seasonal Neotropical Forests: traditional approaches still compensate drawbacks of modern technologies

Cited by 8 publications

References 33 publications

Mammals of medium and large size in Cerrado remnants in southeastern Brazil

Mammals of medium and large size in Cerrado remnants in southeastern Brazil

<b>Diversity of medium and large neotropical mammals in an area of mixed rain forest

Optimal inventorying and monitoring of taxonomic, phylogenetic and functional diversity

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