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What can the parameters of the species–area relationship (SAR) tell us? Insights from Mediterranean islands

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dc.contributor.authorFattorini, Simone
dc.contributor.authorBorges, Paulo A. V.
dc.contributor.authorDapporto, Leonardo
dc.contributor.authorStrona, Giovanni
dc.date.accessioned2018-06-08T16:12:44Z
dc.date.available2018-06-08T16:12:44Z
dc.date.issued2017
dc.description.abstractAIM: The species–area relationship (SAR) is often modelled by the linearized power function log S = log c + z log A, where S is species richness, A is area, logc is the intercept and z is the slope. Although investigating how c and z values vary across taxa and archipelagos can provide insights into the biology of the SAR, this approach has many caveats. In this study, we aim to clarify how and why SARs should be properly compared for the same taxon among different areas, or among different taxa in the same area. LOCATION: Mediterranean. We considered 18–46 Tyrrhenian islands (0.000024–223 km2) and 32–65 Aegean islands (0.0058–8261 km2). METHODS: We used OLS regressions to estimate c and z values for various taxonomic groups: land snails, isopods, centipedes, tenebrionids and reptiles. We used ANCOVAs to test (1) if different taxa have different z and c values within the same island group (possibly due to their dispersal ability and ecological characteristics), and (2) if the same taxon has different z and c values in different island groups (possibly due to differences in historical processes and isolation). RESULTS: z varied between 0.141 and 0.309, while c varied between 2.717 and 12.286 species per unit area (1 km2). For tenebrionids, centipedes and land snails, we found higher c values in the Tyrrhenian islands than in the Aegean islands. Overall, c values were highest for land snails. MAIN CONCLUSIONS: Our results demonstrate the importance of comparing SARs either of different groups within the same area, or of the same group in different areas. Furthermore, we identify the intercept, rather than the slope, as being dependent on the biogeographical dynamics (relict versus equilibrium faunas) and species ecology (dispersal capabilities and population abundance).en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFattorini, S., Borges, P.A.V., Dapporto, L. & Strona G. (2017). What can the parameters of the species-area relationship (SAR) tell us? Insights from the Mediterranean islands. "Journal of Biogeography", 44(5): 1018–1028. DOI:10.1111/jbi.12874pt_PT
dc.identifier.doi10.1111/jbi.12874pt_PT
dc.identifier.issn1365-2699
dc.identifier.urihttp://hdl.handle.net/10400.3/4724
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherJohn Wiley and Sonspt_PT
dc.relationLinking phylogeography to ecology: extracting rules for butterfly biodiversity at large spatial scale
dc.subjectAllometric Functionen
dc.subjectIntercepten
dc.subjectIsland Biogeographyen
dc.subjectPower Functionen
dc.subjectRegression Linesen
dc.subjectSlopeen
dc.subjectSpecies–Area Relationshipen
dc.titleWhat can the parameters of the species–area relationship (SAR) tell us? Insights from Mediterranean islandsen
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLinking phylogeography to ecology: extracting rules for butterfly biodiversity at large spatial scale
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/658844/EU
oaire.citation.endPage1028pt_PT
oaire.citation.issue(5)pt_PT
oaire.citation.startPage1018pt_PT
oaire.citation.titleJournal of Biogeographypt_PT
oaire.citation.volume44pt_PT
oaire.fundingStreamH2020
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication2c8fa579-47a3-4d7f-88e4-784cf056a09d
relation.isProjectOfPublication.latestForDiscovery2c8fa579-47a3-4d7f-88e4-784cf056a09d

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