Spatial–Temporal Variation in Orchid Bee Communities (Hymenoptera: Apidae) in Remnants of Arboreal Caatinga in the Chapada Diamantina Region, State of Bahia, Brazil

Abstract

The spatial and temporal distribution of organisms is a fundamental aspect of biological communities. The present study focused on three remnants of arboreal Caatinga in northeastern Brazil between May, 2009 and April, 2010. A total of 627 euglossine males were captured in traps baited with artificial aromatic compounds. The specimens belonged to 14 species and four genera: Euglossa Latreille, Eulaema Lepeletier, Eufriesea Cockerell, and Exaerete Hoffmannsegg. Eulaema nigrita Lepeletier (41.6), Euglossa carolina Nemésio (15.3%), Eulaema marcii Nemésio (13.6%), and Euglossa melanotricha Moure (12.8%) were the most common species sampled. The distribution of collected specimens per fragment was as follows: Braúna (280 ha)—259 individuals belonging to 14 species; Cambuí (179 ha)—161 individuals from eight species; and Pindoba (100 ha)—207 individuals represented by seven species. Braúna had the highest diversity (H′ = 1.91) and estimated species richness. The largest fragment was the main source of the observed variation in species richness and abundance, indicating a non-random pattern of spatial distribution. The analysis of environmental factors indicated that seasonal variation in these factors was the principal determinant of species occurrence and abundance.

DOI: 10.1007/s13744-012-0053-9

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@article{AndradeSilva2012SpatialTemporalVI, title={Spatial–Temporal Variation in Orchid Bee Communities (Hymenoptera: Apidae) in Remnants of Arboreal Caatinga in the Chapada Diamantina Region, State of Bahia, Brazil}, author={Aline Candida Ribeiro Andrade-Silva and Andr{\'e} Nem{\'e}sio and Fav{\'i}zia Freitas de Oliveira and Fabio S Nascimento}, journal={Neotropical Entomology}, year={2012}, volume={41}, pages={296-305} }