Evaluating the roles of connectivity and environment on faunal turnover: patterns in recent and fossil Iberian mammals

Hortal, Joaquín; Nieto, Manuel; Rodrı́guez, Jesús; Lobo, Jorge M.

doi:10.1007/3-540-26604-6_10

Cited by 2 publications

(3 citation statements)

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“…Factors influencing species turnover among local faunas are usually a combination of both environmental and geographical variables (Borcard et al ., 1992) and determining their relative weighting is crucial for understanding the shaping of biogeographic patterns (Duivenvoorden et al ., 2002; Genner et al ., 2004; Hortal et al ., 2005). In the present study, geographical variation of assemblages yields two well‐defined areas of Eurosiberian and Mediterranean influence respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have recognised the contribution to assemblage dissimilarity made by geographic distance, which explains more variation in faunistic dissimilarity than does environment (Duivenvoorden et al ., 2002; Tuomisto et al ., 2003; Genner et al ., 2004; Qian et al ., 2005). Area connectedness (Hortal et al ., 2005) and its interplay with demographic factors and colonisation possibilities probably make distance variables relevant, since environmental variable weight is highly dependent on the dispersal capabilities of each taxonomic group (Araujo & Pearson, 2005). These findings highlight the role of historical factors, and particularly species dispersion capacity, in the shaping of assemblage structure.…”

Section: Introductionmentioning

confidence: 99%

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Environmental and geographical determinants of beta diversity of leaf beetles (Coleoptera: Chrysomelidae) in the Iberian Peninsula

Baselga

Jiménez‐Valverde

2007

Ecological Entomology

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1. The effect and relative importance of both environmental and geographic factors on species turnover of Chrysomelidae assemblages in the Iberian Peninsula was explored. 2. Ordination and classification analysis of species lists from well‐sampled local areas identified two main biogegraphic groups of inventories, discriminating between Eurosiberian and Mediterranean faunas. 3. After describing this pattern, the underlying determinants were explored, separating pure from combined effects of environment and geography by means of partial canonical correspondence analysis. 4. Results indicate that pure effects of environment and geographic position are of similar magnitude (about 20% of the variation from each), and quite important in comparison with combined effects. 5. The power of the pure effect of geographical variables, together with beta‐diversity independence of species richness gradients, point to the inadequacy of environmental measurement explanation of beta‐diversity patterns, and to the existence of a major component of geographical variation independent of environment.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Environmental and geographical determinants of beta diversity of leaf beetles (Coleoptera: Chrysomelidae) in the Iberian Peninsula

Baselga

Jiménez‐Valverde

2007

Ecological Entomology

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“…These factors will increase the decay of species similarity with geographical distance (GD), but their effects will depend on spatial configuration of the suitable habitats and on the dispersal capacity of the species. Habitat patchiness promotes assemblages differentiation through extinction-colonisation, with its effect modulated by the degree of suitability of the matrix and the presence of corridors (Nekola & White, 1999;Hortal et al, 2005;Vanschoenwinkel et al, 2007). Nevertheless, in the long term, it is the dispersal capacity of taxa what determines the ability to reach environmentally suitable places.…”

Section: Introductionmentioning

confidence: 99%

Climate and regional beta‐diversity gradients in spiders: dispersal capacity has nothing to say?

Jiménez‐Valverde

2010

Insect Conserv Diversity

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Abstract. 1. The importance of dispersal capacity in structuring beta‐diversity gradients has been pointed out in a number of recent studies, making geographical distance (GD) an important predictor of the composition of assemblages apart from environment. In this study, we analyse the relative importance of climate, habitat complexity and GD in four spider families with different dispersal tendencies in the centre of the Iberian Peninsula. 2. Regional beta‐diversity was calculated for the four families and values were bootstrapped to test for significant difference between groups. Mantel tests assessed the explanatory capacity of four potential predictors – climatic similarity, similarity of vegetation complexity, GD and cost distance (CD) considering topography – on faunistic similarity. Simple regressions were used to compare decay rates, and bootstrapping tested for significant differences in coefficients. 3. Regional beta‐diversity values were higher in less vagile families. Climatic distance was strongly correlated with faunistic dissimilarity in the four families, whereas GD had no explanatory power. Except in one family, CD was correlated with faunistic dissimilarity but its independent association was negligible when controlling for climate. 4. Both the pattern of regional beta‐diversity among families and the pattern of variation in species composition explained by climate are consistent with the hypothesis that dispersion capacity influences the composition of the assemblages. However, climate distance was the main factor determining species sorting in space while GD had a weak effect. Differences in the degree of specialisation or nonlinear relationships between species composition and space may obscure the signal of GD at the scale of work.

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Evaluating the roles of connectivity and environment on faunal turnover: patterns in recent and fossil Iberian mammals

Cited by 2 publications

References 43 publications

Environmental and geographical determinants of beta diversity of leaf beetles (Coleoptera: Chrysomelidae) in the Iberian Peninsula

Environmental and geographical determinants of beta diversity of leaf beetles (Coleoptera: Chrysomelidae) in the Iberian Peninsula

Climate and regional beta‐diversity gradients in spiders: dispersal capacity has nothing to say?

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