Diversity of anurans in dry forest fragments of a subtropical region in Brazil

Abstract

This study aimed to identify and compare the diversity between two areas within different matrices located in the Mesophytic Semideciduous Forest; to compare composition and diversity registered to other assemblages; and to evaluate which criteria used here were the most important when sampling them. Data was obtained from September 2011 to March 2012 from 10 sites with different habitats in two areas of mid northern state of Paraná, southern Brazil. We recorded 18 species. Alfa-diversity between the areas did not vary, but the population within one of them was more stable, suggesting better distribution and equity of species in the available habitat. Beta-diversity in the region was high; a result attributed to the species Dendropsophus nanus. Comparing the sampled areas to others in the Semideciduous Forest, the quantity of sampled breeding sites was the most important variable for higher records of richness. Geographical distance was a determinant factor for the distinction between localities. Different factors were determinant for the variation in richness and composition of species in the area. Hence, the conservation of fragments and their associated habitat need to be prioritized.

Composition, Microhabitat and Conservation of the Anurans Community in Lower Basin Temascatio River, Guanajuato

“…Species such as L. megapoda and L. neovolcanicus displayed an obvious preference for the aquatic habitat, with populations being abundant in ponds and puddles, although they also showed some ability to use other seasonal microhabitats as other species of the genus do (Leivas et al 2012a, b). The selection of a substrate or microhabitat is driven by the species' own attributes; ecological, physiological, behavioral, and morphological (Cortés-Gómez et al, 2013;Cortés-Suárez, 2014;Muñoz-Guerrero et al, 2007;Luja et al, 2016;Dos Santos and Conte, 2016), which may explain the high overlap between A. punctatus and H. variolosus, since both species display saxicolous-fossorial habits and similar anatomical features.…”

Influence of microhabitat on the richness of anuran species: a case study of different landscapes in the Atlantic Forest of southern Brazil

“…In fact, MSF exhibits just a few species restricted to the forest interior (Bernarde and Anjos 1999, garey and Silva 2010, Santos and Conte 2016, lourenço-de-Moraes et al 2018. Most of the species exclusive to forest interior have specialized reproductive mode, such as leaf-litter breeders with direct development (mode 23: Haddad and Prado 2005) (e.g.…”

“…On a local scale, species occurrence in water bodies is driven, for example, by the duration of water availability (Vasconcelos et al 2009), by the water depth (Burne andGriffin 2005, gonçalves et al 2015) and by the vegetation type within and around the water body (Keller et al 2009(Keller et al , gonçalves et al 2015. On the regional scale, factors driving species occurrence are, for example, distance to forest fragments (Silva et al 2011a(Silva et al , b, gonçalves et al 2015 and the geographical distance between water bodies (Burne andGriffin 2005, Santos andConte 2016).…”

Richness and composition of anuran assemblages from an Amazonian savanna

“…On the other hand, in the study performed by Neckel-Oliveira et al (2000) in an area of the Amazonian savanna in the municipality of Santarém, by Pinheiro et al (2012) in the Carajás region, both in the state of Pará, and by Lima et al (2017) in the Amazonian Savanna of the Rio Curiaú Environmental Protection Area in Amapá, higher richness and abundance of anuran species were found in forested environments. Several studies report that species of open environments can use forested areas as sites for foraging, migration, reproduction, or refuge (Brassaloti et al 2010, Oda et al 2016, Santos and Conte 2016).…”