Drosophilid assemblages as a bioindicator system of human disturbance in the Brazilian Savanna

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dc.contributor.authorDa Mata, Renata Alvesen_ZA
dc.contributor.authorMcGeoch, Melodieen_ZA
dc.contributor.authorTidon, Rosanaen_ZA
dc.date.accessioned2011-05-15T15:56:39Z
dc.date.available2011-05-15T15:56:39Z
dc.date.issued2008-11
dc.descriptionThe original publication is available at www.springer.comen_ZA
dc.description.abstractAccording to the Convention on Biological Diversity (CBD) the development of bioindicators is extremely necessary to achieve the conservation targets by 2010, and insects are considered an effective group for this goal. Drosophilids are regarded as potential indicators, although this idea remains untested. Therefore, we followed up a protocol to test the drosophilid potential indicator for human disturbance in the Brazilian Savanna, one of the richest and most threatened tropical biomes in the world. Sampling was undertaken in one urban environment and two biological reserves, representing four habitat types (undisturbed gallery forest, disturbed gallery forest, undisturbed savanna, and urban environment). We examined differences in the drosophilid assemblages among habitat types and used the Indicator Value (IndVal) method to point out the indicator species. We also tested the two-stage indicator validation, a protocol recently proposed in the literature, to validate the indicator species for undisturbed gallery forest and savannas, in independent samples. The assemblage variables varied mainly in undisturbed gallery forests, and reflected changes from an undisturbed to a disturbed stage. The IndVal associated with the two-stage protocol showed reliable characteristic species, which are very helpful for diagnostic surveys. Likewise, species that can detect changes in the habitats were also found. We found a set of indicators, which together may be very efficient for both assessing and reflecting a variety of conditions, improving the confidence of the bioindication system, expanding the taxonomic options for bioindicators, and therefore, contributing to the conservation of this region. © 2008 Springer Science+Business Media B.V.en_ZA
dc.description.versionPost-printen_ZA
dc.format.extent20 p. : ill.
dc.identifier.citationDa Mata, R. A., McGeoch, M. & Tidon, R. 2008. Drosophilid assemblages as a bioindicator system of human disturbance in the Brazilian Savanna. Biodiversity and Conservation, 17(12):2899-2916, doi:10.1007/s10531-008-9403-7en_ZA
dc.identifier.issn1572-9710 (online)
dc.identifier.issn0960-3115 (print)
dc.identifier.otherdoi:10.1007/s10531-008-9403-7
dc.identifier.urihttp://hdl.handle.net/10019.1/9963
dc.publisherSpringeren_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectConservation biologyen_ZA
dc.subjectDrosophilids (nuisance flies) -- Bioindicatorsen_ZA
dc.subjectBioindication systemsen_ZA
dc.titleDrosophilid assemblages as a bioindicator system of human disturbance in the Brazilian Savannaen_ZA
dc.typeArticleen_ZA
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