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Anurans from a local assemblage in central Brazil: linking local processes with macroecological patterns
J A Diniz-Filho1, L M Bini, R P Bastos
1Laboratório de Ecologia Teórica e Síntese, Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Goiás, CEP 74001-970, Goiânia, GO, Brazil. diniz@icb1.ufg.br
Summary
Macroecological variables like geographical range size and body size influence anuran population dynamics. Less abundant and more fluctuating species exhibit smaller ranges and body sizes, supporting the minimum viable population model.
Area of Science:
- Ecology
- Zoology
- Conservation Biology
Background:
- Anuran species assemblages are influenced by macroecological variables.
- Understanding these relationships is crucial for conservation efforts.
Purpose of the Study:
- To investigate the link between macroecological variables (geographical range size, body size) and anuran population dynamics in Central Brazil.
- To compare local assemblage data with the broader Cerrado biome species pool.
Main Methods:
- Macroecological variables (GRS, body size, species midpoints) were analyzed for local anurans and the Cerrado biome.
- Local population abundance and variability (coefficient of variation) were estimated.
- Null models were used to compare local data with regional species pool data.
Main Results:
- A clear macroecological relationship was found between geographical range size and body size.
- Local abundance decreased with increased distance from species midpoints.
- Local anuran assemblages represent a random sample of the regional species pool.
- Less abundant and more fluctuating species were associated with smaller geographical range sizes and body sizes.
Conclusions:
- Macroecological factors significantly influence anuran population dynamics.
- The findings support the minimum viable population model, highlighting the importance of range size and body size for population stability.