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.
Highlights
The loss of global diversity is currently one of the biggest international concerns, and studies indicating population declines and species extinction have been frequent in the last few decades (Lawton and May 1995, Houlahan et al 2000, Myers et al 2000, Thomas et al 2004a, b, IUCN 2015)
Amphibians are amongst the groups with most worrying status, having 30 to 40% of their known species estimated to be threatened of extinction (IUCN 2015)
Among the several factors which might lead to population declines of amphibians, fragmentation and loss of habitat have been considered the ones of greater impact (Alford and Richards 1999, Cushman 2006)
Summary
The loss of global diversity is currently one of the biggest international concerns, and studies indicating population declines and species extinction have been frequent in the last few decades (Lawton and May 1995, Houlahan et al 2000, Myers et al 2000, Thomas et al 2004a, b, IUCN 2015). Fragmentation is frequently caused by anthropic activities, and such process implies in changes on the composition and the structure of landscapes in different scales, An Acad Bras Cienc (2016) 88 (3 Suppl.). Conte disrupting the climatic and vegetal condition in the habitat of several populations of amphibians. This induces a reduction of such populations and their diversity, causing local extinctions (Fahrig 2003, Gagné and Fahrig 2007)
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