title: No Evidence of Habitat Loss Affecting the Orchid Bees Eulaema nigrita Lepeletier and Eufriesea auriceps Friese (Apidae: Euglossini) in the Brazilian Cerrado Savanna.
abstract: Habitat loss, landscape fragmentation, and agriculture intensification constitute the main threats to bees. As the organisms responsible for almost one third of the food produced worldwide, there are growing concerns on bees' response to human-related disturbances. Among all bee groups, orchid bees (Apidae: Euglossini) compose an interesting group to test landscape-related hypotheses. In here, we tested the effect of landscape features (amount of anthropic areas and isolation) on the probability of occurrence and the abundances of both Eulaema nigrita Lepeletier and Eufriesea auriceps Friese in the Cerrado savanna. In general, we did not observe any effect of landscape features on the probability of occurrence and abundances of both species in our sampling sites. Given their potential high dispersal abilities, these bee species may be less sensitive to fragmented landscapes or even positively affected by the increase of anthropic habitats. Since we sampled many E. nigrita specimens in highly preserved Cerrado savanna areas, we believe that at least for this biome, this species may not be a good indicator of landscape disturbance.
authors.affiliation: Instituto de Ciências Biológicas, Univ Federal do Pará, Rua Augusto Correia, Guamá, Belém, PA, Brasil, CEP 66075-110. daniel.paivasilva@gmail.com.
authors.forename: D P
authors.initials: DP
authors.lastname: Silva
authors.affiliation: Theory, Metapopulation, and Landscape Lab, Depto de Ecologia, Instituto de Ciências Biológicas, Univ Federal de Goiás, Goiânia, GO, Brasil.
authors.forename: P
authors.initials: P
authors.lastname: De Marco
mesh_terms: D000383:Agriculture; D000818:Animals; D001516:Bees; D001938:Brazil; D017753:Ecosystem; D004784:Environmental Monitoring; D005502:Food; D065948:Grassland; D011157:Population Dynamics
keywords: Disturbed areas; euglossine bees; fragmentation; generalist bee species; indicator species; landscape change