PS 73-145
Frog assemblies’ homogenization across Brazil’s Atlantic Forest

Friday, August 15, 2014
Exhibit Hall, Sacramento Convention Center
Rodrigo Ferreira, Dept. of Wildland Resources, Utah State University, Logan, UT
Karen Beard, Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT

More than 529 frog species occur in the 10% forest remnants of Brazil’s Atlantic Forest. Due to the high degree of habitat loss and fragmentation it is predicted that eurytopic species are thriving and consequently homogenizing the biota across the human-degraded landscape. We surveyed frog assemblies across 21 sites located in both forest edge and forest interior (200 m distant from matrix). 


As hypothesized, our fieldwork data demonstrate that few winners’ species dominate the forest edges across many sites whereas many losers’ species are restricted to both forest interior and few sites. We defined species ecological traits associated to winners and losers’ groups. Our study highlights that the winner loser replacements in this tropical forest occurred at the native species level rather than non-native species.