Compositional uniqueness of diatoms and insects in subtropical streams is weakly correlated with riffle position and environmental uniqueness

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dc.contributor.authorCastro, Emanuela
dc.contributor.authorSiqueira, Tadeu [UNESP]
dc.contributor.authorMelo, Adriano Sanches
dc.contributor.authorBini, Luis Mauricio
dc.contributor.authorLandeiro, Victor Lemes
dc.contributor.authorSchneck, Fabiana
dc.contributor.institutionUniversidade Federal do Rio Grande - FURG
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Goiás (UFG)
dc.contributor.institutionUniversidade Federal de Mato Grosso
dc.date.accessioned2020-12-12T00:56:15Z
dc.date.available2020-12-12T00:56:15Z
dc.date.issued2019-10-01
dc.description.abstractSome local communities contribute more to beta diversity than others, which has been known as compositional uniqueness or local contribution to beta diversity. Compositional uniqueness should correlate positively with environmental uniqueness and site isolation. We evaluated compositional uniqueness (total and in terms of species replacement and nestedness) of periphytic diatoms and insects in subtropical streams and tested for correlates of these metrics. We sampled 90 riffles in a near-pristine catchment in the southeast Atlantic Forest of Brazil. The total compositional uniqueness for diatoms and insects were not associated to riffle position. However, the total compositional uniqueness of diatoms (presence–absence data), was correlated with the uniqueness of streambed substrate composition, while the total compositional uniqueness of insects did not correlate with any explanatory variable. The compositional uniqueness in terms of nestedness (presence–absence data) for diatoms and for insects (abundance data) was correlated positively with the uniqueness of substrate composition. Compositional uniqueness in terms of species replacement (abundance data) for insects was correlated negatively with the uniqueness of substrate composition. Our results indicate that subtle differences in environmental uniqueness, play a role in determining beta diversity in near-pristine streams. However, finding strong correlates of compositional uniqueness proved to be a difficult task.en
dc.description.affiliationInstituto de Ciências Biológicas Universidade Federal do Rio Grande - FURG
dc.description.affiliationInstituto de Biociências Universidade Estadual Paulista (UNESP)
dc.description.affiliationDepartamento de Ecologia Universidade Federal de Goiás
dc.description.affiliationDepartamento de Botânica e Ecologia Universidade Federal de Mato Grosso
dc.description.affiliationUnespInstituto de Biociências Universidade Estadual Paulista (UNESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdFAPESP: 2013/50424-1
dc.description.sponsorshipIdCNPq: 304314/2014-5
dc.description.sponsorshipIdCNPq: 307587/2017-7
dc.description.sponsorshipIdCNPq: 307961/2017-6
dc.format.extent219-232
dc.identifierhttp://dx.doi.org/10.1007/s10750-019-04037-8
dc.identifier.citationHydrobiologia, v. 842, n. 1, p. 219-232, 2019.
dc.identifier.doi10.1007/s10750-019-04037-8
dc.identifier.issn1573-5117
dc.identifier.issn0018-8158
dc.identifier.scopus2-s2.0-85073303060
dc.identifier.urihttp://hdl.handle.net/11449/198003
dc.language.isoeng
dc.relation.ispartofHydrobiologia
dc.sourceScopus
dc.subjectCompositional variation
dc.subjectLCBD
dc.subjectNestedness
dc.subjectReplacement
dc.titleCompositional uniqueness of diatoms and insects in subtropical streams is weakly correlated with riffle position and environmental uniquenessen
dc.typeArtigo
unesp.author.orcid0000-0001-5497-8184[1]

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