Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago
Major hydroelectric dams are among key emergent agents of habitat loss and fragmentation in lowland tropical forests. Orchid bees (Apidae, Euglossini) are one of the most important groups of specialized pollinators of flowering plants in Neotropical forests. Here, we investigate how an entire assemb...
| Autor principal: | Storck-Tonon, Danielle |
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| Outros Autores: | Peres, Carlos A. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Biological Conservation
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17038 |
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oai:repositorio:1-17038 |
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oai:repositorio:1-17038 Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago Storck-Tonon, Danielle Peres, Carlos A. Archipelago Bee Community Structure Dam Environmental Degradation Environmental Impact Habitat Fragmentation Habitat Loss Human Activity Island Biogeography Landscape Ecology Local Extinction Lowland Environment Patch Size Persistence Species Richness Tropical Forest Amazonia Apidae Apoidea Euglossini Magnoliophyta Major hydroelectric dams are among key emergent agents of habitat loss and fragmentation in lowland tropical forests. Orchid bees (Apidae, Euglossini) are one of the most important groups of specialized pollinators of flowering plants in Neotropical forests. Here, we investigate how an entire assemblage of orchid bees responded to the effects of forest habitat loss, isolation and forest canopy degradation induced by a hydroelectric reservoir of Central Brazilian Amazonia. Built in 1986, the Balbina Dam resulted in a vast archipelagic landscape containing 3546 primary forest islands of varying sizes and isolation, surrounded by 3129 km2 of freshwater. Using scent traps, we sampled 34 islands, 14 open-water matrix sites, and three mainland continuous forests, yielding 2870 male orchid bees representing 25 species. Local orchid bee species richness was affected by forest patch area but particularly by site isolation. Distance to forest edges, either within forest areas or into the open-water matrix, was the most important predictor of species richness and composition. Variation in matrix dispersal of individual species to increasingly isolated sites was a key determinant of community structure. Given the patterns of patch persistence and matrix movements of orchid bees in increasingly fragmented forest landscapes, we outline how forest bees respond to the landscape alteration induced by major hydroelectric dams. These results should be considered in environmental impact studies prior to the approval of new dams. © 2017 Elsevier Ltd 2020-06-15T21:38:19Z 2020-06-15T21:38:19Z 2017 Artigo https://repositorio.inpa.gov.br/handle/1/17038 10.1016/j.biocon.2017.07.018 en Volume 214, Pags. 270-277 Restrito Biological Conservation |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Archipelago Bee Community Structure Dam Environmental Degradation Environmental Impact Habitat Fragmentation Habitat Loss Human Activity Island Biogeography Landscape Ecology Local Extinction Lowland Environment Patch Size Persistence Species Richness Tropical Forest Amazonia Apidae Apoidea Euglossini Magnoliophyta |
| spellingShingle |
Archipelago Bee Community Structure Dam Environmental Degradation Environmental Impact Habitat Fragmentation Habitat Loss Human Activity Island Biogeography Landscape Ecology Local Extinction Lowland Environment Patch Size Persistence Species Richness Tropical Forest Amazonia Apidae Apoidea Euglossini Magnoliophyta Storck-Tonon, Danielle Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| topic_facet |
Archipelago Bee Community Structure Dam Environmental Degradation Environmental Impact Habitat Fragmentation Habitat Loss Human Activity Island Biogeography Landscape Ecology Local Extinction Lowland Environment Patch Size Persistence Species Richness Tropical Forest Amazonia Apidae Apoidea Euglossini Magnoliophyta |
| description |
Major hydroelectric dams are among key emergent agents of habitat loss and fragmentation in lowland tropical forests. Orchid bees (Apidae, Euglossini) are one of the most important groups of specialized pollinators of flowering plants in Neotropical forests. Here, we investigate how an entire assemblage of orchid bees responded to the effects of forest habitat loss, isolation and forest canopy degradation induced by a hydroelectric reservoir of Central Brazilian Amazonia. Built in 1986, the Balbina Dam resulted in a vast archipelagic landscape containing 3546 primary forest islands of varying sizes and isolation, surrounded by 3129 km2 of freshwater. Using scent traps, we sampled 34 islands, 14 open-water matrix sites, and three mainland continuous forests, yielding 2870 male orchid bees representing 25 species. Local orchid bee species richness was affected by forest patch area but particularly by site isolation. Distance to forest edges, either within forest areas or into the open-water matrix, was the most important predictor of species richness and composition. Variation in matrix dispersal of individual species to increasingly isolated sites was a key determinant of community structure. Given the patterns of patch persistence and matrix movements of orchid bees in increasingly fragmented forest landscapes, we outline how forest bees respond to the landscape alteration induced by major hydroelectric dams. These results should be considered in environmental impact studies prior to the approval of new dams. © 2017 Elsevier Ltd |
| format |
Artigo |
| author |
Storck-Tonon, Danielle |
| author2 |
Peres, Carlos A. |
| author2Str |
Peres, Carlos A. |
| title |
Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| title_short |
Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| title_full |
Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| title_fullStr |
Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| title_full_unstemmed |
Forest patch isolation drives local extinctions of Amazonian orchid bees in a 26 years old archipelago |
| title_sort |
forest patch isolation drives local extinctions of amazonian orchid bees in a 26 years old archipelago |
| publisher |
Biological Conservation |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17038 |
| _version_ |
1787141320152711168 |
| score |
11.653393 |