Habitat amount and ambient temperature dictate patterns of anuran diversity along a subtropical elevational gradient

Carvalho‐Rocha, Vítor; Peres, Carlos A.; Neckel‐Oliveira, Selvino

doi:10.1111/ddi.13187

Cited by 12 publications

(12 citation statements)

References 103 publications

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“…Several empirical studies on anuran species richness in different tropical and subtropical mountainous regions worldwide have documented from 16 to 60 species (Carvalho‐Rocha et al, 2021; Giaretta et al, 1999; Goyannes‐Araújo et al, 2015; Malonza & Veith, 2012; Siqueira et al, 2011, 2021; Villacampa et al, 2019; Zancolli et al, 2014). In our study, we found 70 anuran species at Poços de Caldas Plateau region.…”

Section: Discussionmentioning

confidence: 99%

Altitude and temperature drive anuran community assembly in a Neotropical mountain region

et al. 2022

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Understanding the spatial variation in species richness and the mechanisms that limit species range sizes along geographical gradients belong to the central research issues in macroecology. Here, we aim to test the topographic and climatic effects on anuran species richness and community composition in mountainous regions in the Brazilian Atlantic Forest biome. We used Individual‐Based Rarefaction Curve (interpolation and extrapolation), Generalized Additive Model (GAM), Midpoint method and Principal Coordinates Analysis (PCoA) to analyze the topographic and climatic effects on anuran community composition, richness, and range sizes in a global biodiversity hotspot. Our results showed that altitude and annual mean temperature and temperature seasonality were the main drivers of species altitudinal range sizes and community assembly in mountainous regions. In conclusion, Anuran community richness peaked at intermediate altitudes following thus a hump‐shaped pattern and corroborated the Rapoport's altitudinal rule as range sizes increased with altitude in mountainous regions from the Atlantic Forest biome. This study revealed new insights into the patterns and drivers of Neotropical anuran communities. Abstract in Portuguese is available with online material.

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Section: Discussionmentioning

confidence: 99%

Altitude and temperature drive anuran community assembly in a Neotropical mountain region

et al. 2022

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“…Annual mean temperatures have been identified as a potential driver of anuran occupancy. Higher mean temperatures can increase primary productivity and frog abundance (Carvalho‐rocha & Peres, 2020). We found that occupancy of most species had positive relationships with mean winter temperature, which suggests increased overwinter survival during milder winters.…”

Section: Discussionmentioning

confidence: 99%

Winter severity affects occupancy of spring‐ and summer‐breeding anurans across the eastern United States

Weiskopf

Shiklomanov

Thompson

et al. 2022

Diversity and Distributions

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Aim: Climate change is an increasingly important driver of biodiversity loss. The ectothermic nature of amphibians may make them particularly sensitive to changes in temperature and precipitation regimes, adding to declines from other threats. While active season environmental conditions can influence growth and survival, effects of variation in winter conditions on population dynamics are less well-studied. Given that extreme winter temperatures can influence amphibian survival and fitness, we expected that increased winter severity-as measured by variability in winter temperatures and snow cover-would be associated with decreased occupancy, and that populations that experience more severe winters would have the largest sensitivities and show the greatest declines.Location: Eastern United States.

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“…Some habitat specialist anuran species (e.g., ground‐dwelling and stream‐dwelling) may have been undersampled. However, previous studies in this region showed that most anuran species found belong to Hylidae, Leptodactylidae and Bufonidae families (~78%–80% of all species; Ceron et al, 2020; Carvalho‐Rocha et al, 2021), which mostly use lentic aquatic environments for reproduction (Haddad et al, 2013; Nunes‐de‐Almeida et al, 2021). Selected ponds spanned elevations between 312 and 1798 m, and were distributed irregularly within this range, but not biased for or against any single elevational band of the gradient (McCain & Grytnes, 2010).…”

Section: Methodsmentioning

confidence: 99%

“…Our aim here was to investigate the spatiotemporal dynamics of anuran diversity along an extensive subtropical elevational gradient within the Brazilian Atlantic Forest biome (Figure 1a). We previously showed that anuran species richness in the same meta-landscape peaked at mid-elevations, whereas anuran abundance showed a low-elevation plateau when year-round monthly data were pooled for all sites (Carvalho-Rocha et al, 2021). We now address two complementary questions: (i) what is the degree of seasonal variation in elevational patterns of anuran diversity?…”

Section: Introductionmentioning

confidence: 95%

Seasonal variation in patterns of anuran diversity along a subtropical elevational gradient

Carvalho‐Rocha

Peres

Neckel‐Oliveira

2023

Journal of Biogeography

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AimAlthough many studies have described spatial patterns along elevational gradients, only a handful have investigated their temporal dynamics, which remain poorly understood. Here we investigate patterns of frog spatiotemporal diversity (Anuran: Amphibia) along a subtropical elevational gradient, and assess the importance of temperature in explaining observed patterns.LocationAn extensive Brazilian Atlantic Forest elevational gradient ranging from 200 m to 1800 m above sea level.TaxonAnuran amphibians.MethodsWe sampled anurans once each month between September 2017 and August 2018 at 38 ponds along the gradient. We then applied generalized additive models to evaluate the spatiotemporal patterns of anuran diversity (measured as Hill's numbers of order q = 0, 1 and 2) and abundance, and understand the extent to which this variation is explained by ambient temperature.ResultsWe found seasonal changes in the shape and magnitude of anuran diversity along the elevational gradient. While anuran diversity showed mid‐elevation peaks between spring and summer, a low‐to‐mid elevation plateau was observed during autumn and winter. Abundance peaked at mid‐elevations between spring and summer, remained high in the lowlands, and decreased in the highlands between autumn and winter. Overall, anuran diversity and abundance increased from spring to summer but then sharply declined towards winter, showing a nonlinear positive relationship with mean temperature. Temperature accounted for most of the observed spatial and spatiotemporal variation, rather than temporal trends in anuran diversity and abundance.Main ConclusionsOur results suggest that in addition to temperature, other factors such as intrinsic species characteristics may regulate anuran activity patterns throughout the year along the elevational gradient. This study highlights how local anuran diversity is dynamic across the elevational gradient, emphasizing the relevance of considering seasonality to better understand diversity patterns in montane environments, which can be critical to inform conservation strategies.

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Habitat amount and ambient temperature dictate patterns of anuran diversity along a subtropical elevational gradient

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 12 publications

References 103 publications

Altitude and temperature drive anuran community assembly in a Neotropical mountain region

Altitude and temperature drive anuran community assembly in a Neotropical mountain region

Winter severity affects occupancy of spring‐ and summer‐breeding anurans across the eastern United States

Seasonal variation in patterns of anuran diversity along a subtropical elevational gradient

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