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14 August 2020 Diversity of Bee Assemblage (Family Apidae) in Natural and Agriculturally Intensified Ecosystems in Uruguay
Estela Santos, Gloria Daners, Enrique Morelli, Guillermo A. Galván
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Bees (Family Apidae) hold a key role as pollinators in a wide range of angiosperm communities. South America suffered strong modifications during the last decade due to increasing anthropic activities and the expansion of agricultural areas, particularly the boom of soybean. The goal of this research was to know the current diversity of bees in South and Low Littoral regions in Uruguay. Specimens were collected in the seasons 2015–2016 and 2016–2017 on natural meadows, cultivated grasslands, soybean fields, among others flowering communities. Collected specimens were classified following taxonomic keys. Forty-five bee species or taxa were distinguished belonging to the subfamilies Megachilinae (11), Apinae (22), Halictinae (7), Colletinae (2), and Andreninae (3). Most taxa were classified up to genus and 14 to species level. Bee diversity was higher for the South region, with traditional agriculture and rangelands, than that of the Low Littoral region where an increasing agricultural land use took place during the last decade, particularly soybean. In addition, this research aimed to study the presence of native bees and the introduced Apis mellifera (Apinae) in a soybean field at four transects located at 0, 50, 100, and 200 m from the crop border in both seasons. Native bee species were only present at 0 and 50 m, pointing to the relevance of natural edge plant communities for their preservation.This is the first survey on native bee diversity in Uruguay to be regarded as a baseline and the setup of conservation strategies.

© The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail:
Estela Santos, Gloria Daners, Enrique Morelli, and Guillermo A. Galván "Diversity of Bee Assemblage (Family Apidae) in Natural and Agriculturally Intensified Ecosystems in Uruguay," Environmental Entomology 49(5), 1232-1241, (14 August 2020).
Received: 23 January 2020; Accepted: 24 June 2020; Published: 14 August 2020

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