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Anuran Diversity Patterns Along A Subtropical Elevational Gradient: The Role Of Habitat And Temperature.pdf

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Preview of Anuran Diversity Patterns along a Subtropical Elevational Gradient: The Role of Habitat and Temperature
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Summary

Abstract: This study examines frog diversity and composition along a sharp subtropical elevational gradient in southern Brazilian Atlantic Forest. It aims to understand how environmental and spatial predictors influence species richness and abundance, and the role of these factors in shaping species distribution and co-occurrence.

Methods: Researchers sampled 38 ponds across an elevation range of 300 to 1,800 masl using structural equation modelling to analyze direct and indirect effects of area, climate, habitat amount, habitat complexity, and productivity on frog species richness and abundance. Joint species distribution models were employed to investigate the importance of these predictors in frog species composition.

Key Findings:
- Frog species richness exhibited a hump-shaped pattern, peaking at intermediate elevations (around 800–1,400 masl).
- Abundance was highest at lowlands and decreased towards higher elevations.
- Habitat amount was the only significant predictor of overall species richness, while temperature positively influenced productivity and abundance but not species richness.
- Species composition diverged markedly between lowland and highland frog assemblages, primarily due to differences in ambient temperature.

Conclusion: The study highlights that extensive natural habitat areas at intermediate elevations retain the most diverse frog assemblages. Anthropogenic habitat loss significantly impacts montane frog diversity, emphasizing the need for effective protection of these habitats.

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Description

This study investigates the relationship between anuran (frog and toad) diversity, habitat amount, and ambient temperature across a subtropical elevational gradient in Brazil. It reveals that both factors significantly influence species distribution, with distinct patterns emerging along the elevation range.

Technical Information

  • File Format: PDF
  • File Size: 1.12 MB
  • Pages: 16
  • Language: EN
  • Total Downloads: 21
  • Last Updated: 3 weeks ago

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Anuran guideAnuran tutorialDiversity guideDiversity tutorialPatterns guidePatterns tutorialalong guidealong tutorialSubtropical guideSubtropical tutorialElevational guideElevational tutorialGradient: guideGradient: tutorialRole guideRole tutorialHabitat guideHabitat tutorialTemperature guideTemperature tutorial

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