2013
DOI: 10.1590/s0001-37652013005000042
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The role of phytophysiognomies and seasonality on the structure of ground-dwelling anuran (Amphibia) in the Pampa biome, southern Brazil

Abstract: Considering that habitat use by amphibians is related both with climate and environmental features, we tested the hypothesis that anuran assemblages found in different phytophysiognomies and in different seasons vary in structure. Additionally, we searched for species which can be indicators of habitat and seasons. The study was conducted in the Pampa biome, southern Brazil. Sampling was done through pitfall traps placed in three phytophysiognomies: grassland, ecotone grassland/forest; and forest. The seasonal… Show more

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Cited by 14 publications
(15 citation statements)
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“…Here, we further support previous findings (Inger and Colwell, 1977;Maragno et al, 2013) that assemblages from structurally less stable habitats suffer high variation in composition across seasons. Seasonality in temperature, rainfall and photoperiod influence the phenology and productivity of plant communities (Soares et al, 2005;Overbeck et al, 2006;Liebsch and Mikich 2009;Longhi et al, 2011), causing changes to habitat heterogeneity and resource availability, which consequently influence the peaks of anuran species reproduction and their patterns of habitat use (Inger and Colwell, 1977;Both et al, 2008;Canavero et al, 2008;Santos et al, 2008;Maragno et al, 2013). As forest habitats are seasonally more stable than grassland habitats in regard to habitat structure, we initially suspected that anuran taxonomic, functional and phylogenetic composition would be more stable throughout the changing seasons in the forest habitat.…”
Section: Discussionsupporting
confidence: 91%
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“…Here, we further support previous findings (Inger and Colwell, 1977;Maragno et al, 2013) that assemblages from structurally less stable habitats suffer high variation in composition across seasons. Seasonality in temperature, rainfall and photoperiod influence the phenology and productivity of plant communities (Soares et al, 2005;Overbeck et al, 2006;Liebsch and Mikich 2009;Longhi et al, 2011), causing changes to habitat heterogeneity and resource availability, which consequently influence the peaks of anuran species reproduction and their patterns of habitat use (Inger and Colwell, 1977;Both et al, 2008;Canavero et al, 2008;Santos et al, 2008;Maragno et al, 2013). As forest habitats are seasonally more stable than grassland habitats in regard to habitat structure, we initially suspected that anuran taxonomic, functional and phylogenetic composition would be more stable throughout the changing seasons in the forest habitat.…”
Section: Discussionsupporting
confidence: 91%
“…Many studies show evidence for within-habitat variation in anuran assemblage composition across seasons due to the varying environment (e.g., Both et al, 2008;Canavero et al, 2008;Santos et al, 2008;Santos-Pereira et al, 2011;Rievers et al, 2014). However, a few studies attempt to understand whether assemblages from different habitats show distinct degrees of variation in composition across seasons (e.g., Inger and Colwell, 1977;Maragno et al, 2013).…”
Section: Discussionmentioning
confidence: 99%
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“…Temporary habitats (including the MOA site) tend to have less pressure from predators than permanent environments (Heyer et al 1975), thereby allowing diversity and species richness (Skelly 1997). In contrast with permanent environments tend to be colonized by species with long reproductive periods, such as Dendropsophus minutus and Hypsiboas faber and species of the family Leptodactylidae (Maragno et al 2013;Wells 1977). The abundance of rare species observed in this study may be due to occasional records while anurans were moving to breeding sites or to shelter areas, which were not the sampling sites themselves (e.g., Phyllomedusa distincta, Scinax granulatus, and Scinax perereca).…”
Section: Discussionmentioning
confidence: 74%