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dc.contributor.authorMoro, Marcelo Freire
dc.contributor.authorSilva, Igor Aurélio
dc.contributor.authorAraújo, Francisca Soares de
dc.contributor.authorNIc Lughadha, Eimear
dc.contributor.authorMeagher, Thomas Robert
dc.contributor.authorMartins, Fernando Roberto
dc.identifier.citationMoro , M F , Silva , I A , Araújo , F S D , NIc Lughadha , E , Meagher , T R & Martins , F R 2015 , ' The role of edaphic environment and climate in structuring phylogenetic pattern in seasonally dry tropical plant communities ' , PLoS One , vol. 10 , no. 3 , e0119166 .
dc.identifier.otherPURE: 176894015
dc.identifier.otherPURE UUID: fe32e495-94dc-4d47-93e8-8118d9aae5d0
dc.identifier.otherScopus: 84925872483
dc.identifier.otherWOS: 000351987300033
dc.descriptionThis study was made possible through the kind financial support of the São Paulo Research Foundation - (Fundação de Amparo à Pesquisa do Estado de São Paulo - Fapesp 2013/15280-9).en
dc.description.abstractSeasonally dry tropical plant formations (SDTF) are likely to exhibit phylogenetic clustering owing to niche conservatism driven by a strong environmental filter (water stress), but heterogeneous edaphic environments and life histories may result in heterogeneity in degree of phylogenetic clustering. We investigated phylogenetic patterns across ecological gradients related to water availability (edaphic environment and climate) in the Caatinga, a SDTF in Brazil. Caatinga is characterized by semiarid climate and three distinct edaphic environments – sedimentary, crystalline, and inselberg –representing a decreasing gradient in soil water availability. We used two measures of phylogenetic diversity: Net Relatedness Index based on the entire phylogeny among species present in a site, reflecting long-term diversification; and Nearest Taxon Index based on the tips of the phylogeny, reflecting more recent diversification. We also evaluated woody species in contrast to herbaceous species. The main climatic variable influencing phylogenetic pattern was precipitation in the driest quarter, particularly for herbaceous species, suggesting that environmental filtering related to minimal periods of precipitation is an important driver of Caatinga biodiversity, as one might expect for a SDTF. Woody species tended to show phylogenetic clustering whereas herbaceous species tended towards phylogenetic overdispersion. We also found phylogenetic clustering in two edaphic environments (sedimentary and crystalline) in contrast to phylogenetic overdispersion in the third (inselberg). We conclude that while niche conservatism is evident in phylogenetic clustering in the Caatinga, this is not a universal pattern likely due to heterogeneity in the degree of realized environmental filtering across edaphic environments. Thus, SDTF, in spite of a strong shared environmental filter, are potentially heterogeneous in phylogenetic structuring. Our results support the need for scientifically informed conservation strategies in the Caatinga and other SDTF regions that have not previously been prioritized for conservation in order to take into account this heterogeneity.
dc.relation.ispartofPLoS Oneen
dc.rightsCopyright: © 2015 Moro et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectQH301 Biologyen
dc.titleThe role of edaphic environment and climate in structuring phylogenetic pattern in seasonally dry tropical plant communitiesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biological Diversityen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. Centre for Evolution, Genes and Genomicsen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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