On a habitat structure-based approach to evaluating species occurrence: cavity-nesting Hymenoptera in a secondary tropical forest remnant |
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Authors: | Rafael Dias Loyola Rogério Parentoni Martins |
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Institution: | 1. Programa de Pós-gradua??o em Ecologia, Depto. Zoologia, Instituto de Biologia, Universidade Estadual de Campinas, Cx. Postal 6109, CEP 13083-863, Campinas, SP, Brazil 2. Lab. Ecologia e Comportamento de Insetos, Depto. Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Abstract: | Measuring bee and wasp community habitat preferences in natural systems may provide insights for biodiversity management and
conservation as habitat heterogeneity can be the major factor affecting species diversity in a community. Here, we present
evidence that supports the use of a vegetation structure-based approach in order to predict the occurrence of common Brazilian-remnant
solitary bee and wasp species. Using trap nests, we sampled Aculeate bees and wasps in a forest remnant within an urban area
of southeast Brazil. We also measured eight habitat structure components in the area. Tree trunk circumference, shrub and
wood log abundance were good predictors of presence or absence of the commonest solitary bee and wasp species in the study
area. We demonstrated that even on a small scale it is possible to detect significant influences of habitat structural features
on species occurrences and that some of them are effective as surrogates for predicting trap-nesting Hymenoptera occurrence
in a given area. Our data present evidence on the potential application of a habitat structure-based approach in conservation
assessments concerning cavity-nesting Hymenoptera. We caution, however, that this habitat structure-based approach must to
be taken with prudence as a detailed survey of an area’s biodiversity is always preferable. |
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Keywords: | Habitat structure-based approach Solitary bees and wasps Habitat indicators Vegetation physiognomy Forest remnant |
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