Please use this identifier to cite or link to this item:
Title: Soil and climate equally contribute to changes in the species compositions of Brazilian dry forests across 300 km
Keywords: Beta diversity
Environmental filter
Habitat fragmentation
Landscape structure
Diversidade beta
Filtros ambientais
Fragmentação de habitat
Estrutura da paisagem
Issue Date: Apr-2020
Publisher: Oxford University Press
Citation: ARRUDA, D. M. et al. Soil and climate equally contribute to changes in the species compositions of Brazilian dry forests across 300 km. Journal of Plant Ecology, [S. I.], v. 13, n. 2, p. 171-176, Apr. 2020. DOI:10.1093/jpe/rtz059.
Abstract: Aims: Understanding the factors that control biodiversity distributions at different spatial scales has been a key challenge for conservation efforts. That biodiversity, reflected in differences in species compositions among sites (beta diversity), can be derived from species replacement (turnover) and is driven by multiple factors. Here, we sought to tackle this issue through two questions related to threatened Brazilian seasonally dry forests: (i) what is the contribution of species turnover to beta diversity? and (ii) which factors drive variations in species compositions among forest patches? Methods: We sampled tree species and environmental variables (soils and climate) in 17 dry forest patches spaced almost 300 km apart. We used the beta diversity partitioning framework to determine the contribution of turnover. We used redundancy analysis, with properly controlled spatial structure, to assess the contributions of the environmental and spatial factors to the variations of the species composition. Important Findings: Beta diversity among the patches was mainly represented by the turnover component (98.2%), with Simpson dissimilarity superior to other regions of the country (means of 0.89 and 0.71 in multiple site and pairwise measures, respectively). The environmental factors measured explained more than space, representing 30.3% of the variation of the species composition, of which 28.1% was nonspatially structured. We suggest that 300 km represents a threshold at which edaphic and climatic predictors have similar effects in determining community turnover (14.9% and 12.6%, respectively, without spatial structure). Thus, conservation strategies should be considered across landscapes to effectively protect tropical forest diversity, as even considering the different climatic aspects covered by the scale, landscaped edaphic varieties are important drivers of species turnover.
Appears in Collections:DCF - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.