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Título

Disturbance maintains alternative biome states

AutorDantas, Vinícius de L.; Hirota, Marina; Oliveira, Rafael S.; Pausas, J. G.
Fecha de publicaciónene-2016
EditorJohn Wiley & Sons
CitaciónEcology Letters 19(1): 12-19 (2016)
ResumenUnderstanding the mechanisms controlling the distribution of biomes remains a challenge. Although tropical biome distribution has traditionally been explained by climate and soil, contrasting vegetation types often occur as mosaics with sharp boundaries under very similar environmental conditions. While evidence suggests that these biomes are alternative states, empirical broad-scale support to this hypothesis is still lacking. Using community-level field data and a novel resource-niche overlap approach, we show that, for a wide range of environmental conditions, fire feedbacks maintain savannas and forests as alternative biome states in both the Neotropics and the Afrotropics. In addition, wooded grasslands and savannas occurred as alternative grassy states in the Afrotropics, depending on the relative importance of fire and herbivory feedbacks. These results are consistent with landscape scale evidence and suggest that disturbance is a general factor driving and maintaining alternative biome states and vegetation mosaics in the tropics. Copyright
Versión del editorhttps://doi.org/10.1111/ele.12537
URIhttp://hdl.handle.net/10261/141070
DOI10.1111/ele.12537
Identificadoresissn: 1461-0248
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