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dc.contributor.authorKortz, Alessandra R.
dc.contributor.authorMagurran, Anne E.
dc.identifier.citationKortz , A R & Magurran , A E 2019 , ' Increases in local richness (α-diversity) following invasion are offset by biotic homogenization in a biodiversity hotspot ' , Biology Letters , vol. 15 , no. 5 , 20190133 .
dc.identifier.otherPURE: 259113430
dc.identifier.otherPURE UUID: bab7c811-165d-4cbc-9661-1d144d2eada1
dc.identifier.othercrossref: 10.1098/rsbl.2019.0133
dc.identifier.otherPubMed: 31088282
dc.identifier.otherORCID: /0000-0002-0036-2795/work/58055472
dc.identifier.otherScopus: 85066257145
dc.identifier.otherWOS: 000470116400013
dc.descriptionThis work was funded by the Brazilian Ciência sem Fronteiras/Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (grant number 1091/13-1), European Research Council (AdG BioTIME (grant number 250189) and PoC BioCHANGE (grant number 727440)) and the Royal Society.en
dc.description.abstractThe world's ecosystems are experiencing unparalleled rates of biodiversity change, with invasive species implicated as one of the drivers that restructure local assemblages. Here we focus on the processes leading to biodiversity change in a biodiversity hotspot, the Brazilian Cerrado. The null expectation that invasion leads to increase in local species richness is supported by our investigation of the grass layer in two key habitats (campo sujo and campo úmido). Our analysis uncovered a linear relationship between total richness and invasive richness at the plot level. However, because the invasive species—even though few in number—are widespread, their contribution to local richness (α-diversity) is offset by their homogenizing influence on composition (β-diversity). We thus identify a mechanism that can help explain the paradox that species richness is not declining in many local assemblages, yet compositional change is exceeding the predictions of ecological theory. As such, our results emphasize the importance of quantifying both α-diversity and β-diversity in assessments of biodiversity change in the contemporary world.
dc.relation.ispartofBiology Lettersen
dc.rightsCopyright © 2019 The Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectSpecies richnessen
dc.subjectBiodiversity changeen
dc.subjectInvasion impacten
dc.subjectQH301 Biologyen
dc.titleIncreases in local richness (α-diversity) following invasion are offset by biotic homogenization in a biodiversity hotspoten
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorThe Royal Societyen
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. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews. St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews. Fish Behaviour and Biodiversity Research Groupen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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