Does the habitat structure control the distribution and diversity of the Odonatofauna?

Brazilian Journal of Biology

Am Souza¹  Fno Fogaça¹  Am Cunico¹  J Higuti¹ 

关键词: insect;    habitat heterogeneity;    structural complexity;    streams;    insetos;    heterogeneidade de habitat;    complexidade estrutural;    riachos;   

DOI  :  10.1590/1519-6984.18213

来源: SciELO

【 摘 要 】

AbstractThe statement that the habitat complexity and structure govern the abundance and diversity of biological communities has been widely investigated. In this context, we assumed the hypothesis of habitat heterogeneity, that is, the higher habitat complexity leads to greater diversity of Odonata. In addition, we analyzed the influence of habitat structure on the distribution of this community, and evaluated the effects of abiotic variables. Odonata larvae were collected with sieves and by electrofishing in ten neotropical streams belonging to the Pirapó River basin. Forty species of Odonata were registered, which were distributed in eight families, Libellulidae stood out with the highest richness. The high gamma diversity and distribution of Odonata were associated with habitat heterogeneity in these streams. However, the abiotic variables also seem to affect the distribution of Odonata species, in view of the impact of the land use in the vicinity of streams.

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