Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest
ABSTRACT In this study, through a rapid assessment, we evaluated differences in richness, abundance, species composition and beta diversity of Euglossini bees in preserved areas and areas altered by riverine human populations in the Caxiuanã National Forest (northern Amazon). Our hypotheses were: i)...
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| Format: | Article |
| Language: | English |
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Fundação Zoobotânica do Rio Grande do Sul
2022-05-01
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| Series: | Iheringia: Série Zoologia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212022000100209&lng=en&tlng=en |
| _version_ | 1811255750140362752 |
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| author | Ana C. E. Enríquez-Espinosa Daniele G. Ramos Alexandre S. Siqueira Bárbara Dunck Raphael Ligeiro |
| author_facet | Ana C. E. Enríquez-Espinosa Daniele G. Ramos Alexandre S. Siqueira Bárbara Dunck Raphael Ligeiro |
| author_sort | Ana C. E. Enríquez-Espinosa |
| collection | DOAJ |
| description | ABSTRACT In this study, through a rapid assessment, we evaluated differences in richness, abundance, species composition and beta diversity of Euglossini bees in preserved areas and areas altered by riverine human populations in the Caxiuanã National Forest (northern Amazon). Our hypotheses were: i) the species richness, diversity, abundance and composition of Euglossini bees differ between the preserved and altered areas because many species are intolerant to small anthropic disturbances; and ii) areas altered by riverine populations have higher values of beta diversity (species dissimilarity between sites) than preserved areas, due to local changes in habitat and increased heterogeneity between sites. We sampled two areas (preserved and altered) and, in each area, four transects were sampled with odorous baits. We used a Student’s t test to evaluate differences in richness, abundance, and Shannon-Wiener diversity index. We also evaluated differences in composition and differences in beta diversity between areas. We collected 102 specimens, identified in 18 species and three genera, 63 individuals (61.8% of the total) in preserved areas and 39 individuals (38.2%) in altered areas. Euglossa liopoda (Dressler, 1982) was the most abundant in altered areas and Euglossa imperialis (Cockerell, 1922) the most abundant in preserved areas. Species richness was 2.5 times greater in the transects of preserved areas, and species composition also differed between the sampled areas. In contrast, species abundance did not differ between transects of both areas. Despite our small sample size, this study demonstrated that the richness, composition and beta diversity of Euglossini bees can be potentially affected by local changes in habitat caused by small-scale activities provided by traditional Amazonian groups. Our results indicate the urgency for more comprehensive studies aimed to investigate these relationships. |
| first_indexed | 2024-04-12T17:28:27Z |
| format | Article |
| id | doaj.art-c0b7ff3cbe73400baa8004bf44c9fda2 |
| institution | Directory Open Access Journal |
| issn | 1678-4766 |
| language | English |
| last_indexed | 2024-04-12T17:28:27Z |
| publishDate | 2022-05-01 |
| publisher | Fundação Zoobotânica do Rio Grande do Sul |
| record_format | Article |
| series | Iheringia: Série Zoologia |
| spelling | doaj.art-c0b7ff3cbe73400baa8004bf44c9fda22022-12-22T03:23:12ZengFundação Zoobotânica do Rio Grande do SulIheringia: Série Zoologia1678-47662022-05-0111210.1590/1678-4766e2022010Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forestAna C. E. Enríquez-Espinosahttps://orcid.org/0000-0001-7463-4784Daniele G. Ramoshttps://orcid.org/0000-0003-1123-709XAlexandre S. Siqueirahttps://orcid.org/0000-0002-5995-3960Bárbara Dunckhttps://orcid.org/0000-0003-0608-0614Raphael Ligeirohttps://orcid.org/0000-0001-9717-5461ABSTRACT In this study, through a rapid assessment, we evaluated differences in richness, abundance, species composition and beta diversity of Euglossini bees in preserved areas and areas altered by riverine human populations in the Caxiuanã National Forest (northern Amazon). Our hypotheses were: i) the species richness, diversity, abundance and composition of Euglossini bees differ between the preserved and altered areas because many species are intolerant to small anthropic disturbances; and ii) areas altered by riverine populations have higher values of beta diversity (species dissimilarity between sites) than preserved areas, due to local changes in habitat and increased heterogeneity between sites. We sampled two areas (preserved and altered) and, in each area, four transects were sampled with odorous baits. We used a Student’s t test to evaluate differences in richness, abundance, and Shannon-Wiener diversity index. We also evaluated differences in composition and differences in beta diversity between areas. We collected 102 specimens, identified in 18 species and three genera, 63 individuals (61.8% of the total) in preserved areas and 39 individuals (38.2%) in altered areas. Euglossa liopoda (Dressler, 1982) was the most abundant in altered areas and Euglossa imperialis (Cockerell, 1922) the most abundant in preserved areas. Species richness was 2.5 times greater in the transects of preserved areas, and species composition also differed between the sampled areas. In contrast, species abundance did not differ between transects of both areas. Despite our small sample size, this study demonstrated that the richness, composition and beta diversity of Euglossini bees can be potentially affected by local changes in habitat caused by small-scale activities provided by traditional Amazonian groups. Our results indicate the urgency for more comprehensive studies aimed to investigate these relationships.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212022000100209&lng=en&tlng=enAnthropogenic effectsdiversityland useorchid bees |
| spellingShingle | Ana C. E. Enríquez-Espinosa Daniele G. Ramos Alexandre S. Siqueira Bárbara Dunck Raphael Ligeiro Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest Iheringia: Série Zoologia Anthropogenic effects diversity land use orchid bees |
| title | Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest |
| title_full | Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest |
| title_fullStr | Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest |
| title_full_unstemmed | Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest |
| title_short | Effects of small-scale anthropogenic alterations in Euglossini bees at eastern Amazon forest |
| title_sort | effects of small scale anthropogenic alterations in euglossini bees at eastern amazon forest |
| topic | Anthropogenic effects diversity land use orchid bees |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212022000100209&lng=en&tlng=en |
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