Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

Antonini, Yasmine; Silveira, Rodrigo Assunção da; Oliveira, Márcio Luiz de; Martins, Cristiane C. A.; Oliveira, Reisla

doi:10.13102/sociobiology.v63i2.1038

Cited by 17 publications

(19 citation statements)

References 38 publications

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“…Euglossine bees may show strong seasonality, with greater abundance in the rainy season than in the dry season, when only species less sensitive to dry weather conditions persist (Rebêlo and Garófalo 1991). Euglossine bees are significantly affected by wind, temperature, plant diversity, availability of food resources, and access to nesting sites (Nemésio and Vasconcelos 2013;Antonini et al 2016Antonini et al , 2017. At higher elevations in mountainous ecosystems, there is an increase in mean wind speed, a decrease in temperature, and a simplification of vegetation structure (e.g., Lawton et al 1987), variables that may limit the distribution of euglossine bees in these environments, although large-bodied species are known to thrive in mid to high elevations in some regions (Roubik and Hanson 2004;McCravy et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Structure and composition of the euglossine bee community along an elevational gradient of rupestrian grassland vegetation

et al. 2020

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Euglossini is an important tribe of Neotropical bees found primarily in wet forest environments, although their distribution extends to seasonal tropical forests and mountainous grassland habitats. However, little is known about the geography and diversity of euglossine bees in mountain regions, particularly in the Brazilian semi-arid Cerrado vegetation. We evaluated the distribution of euglossine bees along an elevational gradient in Serra do Cipó, Brazil, where the vegetation varies from savanna (Cerrado) at lower elevations to rupestrian grasslands in mountain summits, and an ecotone of cerrado/rupestrian grassland at mid elevations. We also tested whether bee species richness and abundance were influenced by environmental variables (vegetation and climate) that change with elevation. Bee abundance decreased with elevation, while species richness peaked at mid elevations. Species replacement along the elevational gradient led to differences in species composition between sites; but species diversity remained relatively constant, along the gradient. Abundance and diversity patterns were similar between the dry and rainy seasons, despite differences in species composition. We emphasize the importance of preserving corridors of mesic environments in the conservation of euglossine bees for maintaining ecosystem services in mountain savannas. orchid bees / campo rupestre / Brazilian Cerrado / mountain ecology / Neotropical savanna

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Section: Introductionmentioning

confidence: 99%

Structure and composition of the euglossine bee community along an elevational gradient of rupestrian grassland vegetation

et al. 2020

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“…cingulata , Euglossa imperialis , and Eg . truncata ) can also be sampled in forest remnants of the Brazilian savanna biome (Nemésio and Faria-Jr 2004;Viotti et al 2013;Silveira et al 2015;Antonini et al 2016). By contrast, Eg .…”

Section: Discussionmentioning

confidence: 99%

Areas of endemism in the Atlantic Forest: quantitative biogeography insights from orchid bees (Apidae: Euglossini)

2017

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Orchid bees are endemic to the Neotropics and were sampled more intensively in the Atlantic Forest in the last decade than in that of other Brazilian biomes. In this study, we aimed at identifying the main distributional patterns and areas of endemism of Euglossini orchid bee species in the Atlantic Forest using parsimony analysis of endemism and endemicity analysis. The results of these analyses were partly congruent and supported the idea that the distribution of orchid bees is structured into at least five areas of endemism: Pernambuco/coastal Bahia; Espírito Santo/Rio de Janeiro/south of Minas Gerais; north of Minas Gerais/central Bahia; southeast of Minas Gerais/ northeast, central and coast of São Paulo/central and coastal Paraná; and central/coast of Santa Catarina-Rio Grande do Sul. Most of these areas were consistent with other groups of organisms and indicate the existence of real areas of endemism in the Atlantic Rain Forest. distribution pattern / insects / PAE / NDM / orchid bees Electronic supplementary material The online version of this article (

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“…The crucial factors in determining diversity, composition, and temporal variability of pollinator assemblages are climatic seasonality and spatial and temporal variation in food resources. Although orchid bee species are specialized pollinators of orchids, their distribution and assemblages are also influenced by the structure and composition of trees in the habitat [ 21 , 59 ], which may explain the positive relationship between tree richness and orchid bee species richness. Most biological communities appear to be structured by both local ecological determinism and dispersal-driven assembly.…”

Section: Discussionmentioning

confidence: 99%

Patterns of orchid bee species diversity and turnover among forested plateaus of central Amazonia

et al. 2017

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The knowledge of spatial pattern and geographic beta-diversity is of great importance for biodiversity conservation and interpreting ecological information. Tropical forests, especially the Amazon Rainforest, are well known for their high species richness and low similarity in species composition between sites, both at local and regional scales. We aimed to determine the effect and relative importance of area, isolation and climate on species richness and turnover in orchid bee assemblages among plateaus in central Brazilian Amazonia. Variance partitioning techniques were applied to assess the relative effects of spatial and environmental variables on bee species richness, phylogeny and composition. We hypothesized that greater abundance and richness of orchid bees would be found on larger plateaus, with a set of core species occurring on all of them. We also hypothesized that smaller plateaus would possess lower phylogenetic diversity. We found 55 bee species distributed along the nine sampling sites (plateaus) with 17 of them being singletons. There was a significant decrease in species richness with decreasing size of plateaus, and a significant decrease in the similarity in species composition with greater distance and climatic variation among sampling sites. Phylogenetic diversity varied among the sampling sites but was directly related to species richness. Although not significantly related to plateau area, smaller or larger PDFaith were observed in the smallest and the largest plateaus, respectively.

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Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

Cited by 17 publications

References 38 publications

Structure and composition of the euglossine bee community along an elevational gradient of rupestrian grassland vegetation

Structure and composition of the euglossine bee community along an elevational gradient of rupestrian grassland vegetation

Areas of endemism in the Atlantic Forest: quantitative biogeography insights from orchid bees (Apidae: Euglossini)

Patterns of orchid bee species diversity and turnover among forested plateaus of central Amazonia

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