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Establishing baseline biodiversity data prior to hydroelectric dam construction to monitoring impacts to bats in the Brazilian Amazon

Bobrowiec, Paulo Estefano D ; Tavares, Valéria da Cunha Deng, Z. Daniel

PloS one, 2017-09, Vol.12 (9), p.e0183036-e0183036 [Periódico revisado por pares]

United States: Public Library of Science

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  • Título:
    Establishing baseline biodiversity data prior to hydroelectric dam construction to monitoring impacts to bats in the Brazilian Amazon
  • Autor: Bobrowiec, Paulo Estefano D ; Tavares, Valéria da Cunha
  • Deng, Z. Daniel
  • Assuntos: Abundance ; Animals ; Bats ; Biodiversity ; Biology and Life Sciences ; Biota ; Brazil ; Chiroptera ; Construction ; Dam construction ; Dams ; Earth Sciences ; Ecology and Environmental Sciences ; Ecosystem ; Engineering and Technology ; Environment ; Fauna ; Flooding ; Floods ; Guilds ; Habitats ; Hydroelectric dams ; Monitoring ; Morphology ; Population Density ; Rivers ; Species composition ; Studies ; Topography ; Vegetation
  • É parte de: PloS one, 2017-09, Vol.12 (9), p.e0183036-e0183036
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Competing Interests: The authors have declared that no competing interests exist.
    Conceptualization: PEDB VCT.Data curation: PEDB VCT.Formal analysis: PEDB VCT.Funding acquisition: PEDB VCT.Investigation: PEDB VCT.Methodology: PEDB VCT.Project administration: PEDB VCT.Resources: PEDB VCT.Supervision: PEDB VCT.Validation: PEDB VCT.Visualization: PEDB VCT.Writing – original draft: PEDB VCT.Writing – review & editing: PEDB VCT.
  • Descrição: The modification of Amazonian rivers by the construction of megaprojects of hydroelectric dams has widely increased over the last decade. Robust monitoring programs have been rarely conducted prior to the establishment of dams to measure to what extent the fauna, and its associated habitats may be affected by upcoming impacts. Using bats as models, we performed analyses throughout the area under the influence of the Santo Antônio hydroelectric dam, Southwestern Brazilian Amazonia before its construction to estimate how the fauna and its associated habitats would be affected by the upcoming impacts. We surveyed bats in 49 plots distributed along the areas going to be inundated by the dam and those remaining dry. As predictors for the species distribution, we tested the variables of vegetation structure and topography. Species composition largely differed between the dry plots and the plots located in areas that will be flooded, and this was strongly associated with the variables of forest basal area and elevation. Vegetation-related variables also had strong influence on the guilds distribution. The flooding of lower elevations areas is expected to negatively affect the species number and abundance of frugivorous species. In contrast, it is likely that animalivores will be less vulnerable to dam-induced flooding, since they were abundant in the areas not expect to be inundated. We urge for the implementation of studies to predict impacts caused by large hydroelectric dams, including tests of the influence of the local conditions that shape diversity to avoid massive losses of the biota, and to build preventive monitoring and management actions.
  • Editor: United States: Public Library of Science
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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