Artigo

Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation

The Amazonian cangas is a vegetation type distributed as patches of open vegetation embedded in a matrix of tropical forest and that grows over iron-rich soils in the Serra dos Carajás region. To characterize cangas avifauna, we surveyed birds in eight patches varying from 43 to 1,366 hectares. Cang...

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Autor principal: Borges, Sérgio H.
Outros Autores: Santos, Marcos P.D., Soares, Leonardo M.S., Silva, Antonita S. da
Grau: Artigo
Idioma: English
Publicado em: Anais da Academia Brasileira de Ciências 2020
Assuntos:
Amazonian Habitats
Insular Habitats
Iron Mines
Neotropical Birds
Rock Outcrops
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/13118
id oai:repositorio:1-13118
recordtype dspace
spelling oai:repositorio:1-13118 Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation Borges, Sérgio H. Santos, Marcos P.D. Soares, Leonardo M.S. Silva, Antonita S. da Amazonian Habitats Insular Habitats Iron Mines Neotropical Birds Rock Outcrops The Amazonian cangas is a vegetation type distributed as patches of open vegetation embedded in a matrix of tropical forest and that grows over iron-rich soils in the Serra dos Carajás region. To characterize cangas avifauna, we surveyed birds in eight patches varying from 43 to 1,366 hectares. Cangas avifauna has compositional affinities with savannas widespread throughout the Amazon and other biomes, and we estimate that more than 200 bird species occurs in this habitat. Species composition was relatively homogeneous, and the similarity among cangas patches was the dominant component of the beta-diversity. Bird communities in cangas patches exhibited statistically significant nested structure in respect to species richness and patch size. In contrast, the nested site arrangement was not affected by the isolation of patches. Number of species and composition are moderately affected by the area of cangas patches but not by its degree of isolation. To conserve this unique habitat are necessary a strict protection of carefully chosen patches of cangas and an investigation of the conservation value of secondary vegetation recovered by the mining companies. 2020-04-24T15:14:40Z 2020-04-24T15:14:40Z 2017 Artigo https://repositorio.inpa.gov.br/handle/1/13118 10.1590/0001-3765201720160048 en Volume 89, Número 3, Pags. 2167-2180 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Anais da Academia Brasileira de Ciências
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Amazonian Habitats
Insular Habitats
Iron Mines
Neotropical Birds
Rock Outcrops
spellingShingle Amazonian Habitats
Insular Habitats
Iron Mines
Neotropical Birds
Rock Outcrops
Borges, Sérgio H.
Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
topic_facet Amazonian Habitats
Insular Habitats
Iron Mines
Neotropical Birds
Rock Outcrops
description The Amazonian cangas is a vegetation type distributed as patches of open vegetation embedded in a matrix of tropical forest and that grows over iron-rich soils in the Serra dos Carajás region. To characterize cangas avifauna, we surveyed birds in eight patches varying from 43 to 1,366 hectares. Cangas avifauna has compositional affinities with savannas widespread throughout the Amazon and other biomes, and we estimate that more than 200 bird species occurs in this habitat. Species composition was relatively homogeneous, and the similarity among cangas patches was the dominant component of the beta-diversity. Bird communities in cangas patches exhibited statistically significant nested structure in respect to species richness and patch size. In contrast, the nested site arrangement was not affected by the isolation of patches. Number of species and composition are moderately affected by the area of cangas patches but not by its degree of isolation. To conserve this unique habitat are necessary a strict protection of carefully chosen patches of cangas and an investigation of the conservation value of secondary vegetation recovered by the mining companies.
format Artigo
author Borges, Sérgio H.
author2 Santos, Marcos P.D.
Soares, Leonardo M.S.
Silva, Antonita S. da
author2Str Santos, Marcos P.D.
Soares, Leonardo M.S.
Silva, Antonita S. da
title Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
title_short Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
title_full Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
title_fullStr Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
title_full_unstemmed Avian Communities in the Amazonian Cangas Vegetation: Biogeographic Affinities, Components of Beta-Diversity and Conservation
title_sort avian communities in the amazonian cangas vegetation: biogeographic affinities, components of beta-diversity and conservation
publisher Anais da Academia Brasileira de Ciências
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/13118
_version_ 1787143696212295680
score 11.755432

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