Abelhas Euglossina (Hymenoptera, Apidae) em Remanescentes Florestais da Hiléia Baiana: Padrões de Aninhamento e Efeitos das Características dos Fragmentos na Estrutura das Assembleias

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Coswosk, Judson Albino
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Universidade Federal do Espírito Santo
Habitat loss and fragmentation are among the most important threats to biodiversity conservation in tropical forests. Euglossina bees (Hymenoptera, Apidae) were used as a model for the study of hypotheses related to habitat loss and fragmentation in Hileia Baiana, an important center of wealth and endemism in the Atlantic Forest. The objectives of this study were: (i) to test the hypothesis that the characteristics of the fragments (size, shape and vegetation cover) affect the structure pattern of Euglossina bees assemblages; (Ii) evaluate if the distribution of the species follows a nested pattern and if the characteristics of the fragments (size, shape and vegetation cover) are environmental gradients underlying the nesting pattern. The data were obtained from 13 forest remnants in the northern state of Espírito Santo, ranging in size from 5 to 265 ha. Sampling was performed in two stages: the first from November 2014 to February 2015 and the second from August to September 2015. The remnants were proportionally sampled in their areas, using traps with aromatic baits to attract and capture bees. A total of 3,094 bees of 19 species were captured in the remaining 13 samples. Only the fragment size explained the variation in abundance and species richness, acting as a limiting factor to the persistence of sensitive species found in large and preserved fragments of the region. The distribution of the species follows a nested pattern influenced by the size of the fragment, revealing that processes of selective and ordered extinction of forest dependent species have occurred in the small sampled remnants.
Fragmented habitat , Biodiversity , Conservation , Bee , Atlantic Forest , Abelha , Paisagens fragmentadas , Biodiversidade , Mata Atlântica - Conservação , Habitat fragmentado
COSWOSK, Judson Albino. Abelhas Euglossina (Hymenoptera, Apidae) em remanescentes florestais da Hiléia Baiana: padrões de aninhamento e efeitos das características dos fragmentos na estrutura das assembleias. 2016. Dissertação (Mestrado em Biodiversidade Tropical) - Universidade Federal do Espírito Santo, Centro Universitário Norte do Espírito Santo, São Mateus, 2016.