The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional do INPA |
Texto Completo: | https://repositorio.inpa.gov.br/handle/1/15440 |
Resumo: | While many published maps of avian species richness indicate northern Amazonia to be somewhat species-poor, recent surveys reveal that this area actually possesses one of the most species-rich avifaunas in the Neotropical lowlands. Our surveys indicate that at least 520 bird species occur in Viruá National Park (VNP) and adjacent areas, which is located in the Brazilian state of Roraima (northern Amazonia). Here, we present the results of our ornithological efforts since 2001, based on audio-visual and mistnetting surveys, vouchered by tape and digital recordings, photographs, and collected specimens. VNP is dominated by Amazonian white-sand forest (locally known as campina and campinarana) on an extensive floodplain influenced by muddy-, clear-, and blackwater rivers, forming a complex mosaic of habitats that includes várzea, igapó, and hilltop "islands" with terra-firme forest. The high avian diversity found at VNP is likely due to both biogeographic and local-scale processes. Each habitat contains a particular avian assemblage. Patches of terra-firme forest have a typical Guianan avifauna. Campina and campinarana contain unique species, including some poorly known and range-restricted (e.g., Aprositornis disjuncta), as well as species typical of the northern Roraiman savannas (e.g., Icterus nigrogularis). The várzea of the Rio Branco (with its associated river islands) is particularly species-rich, including the endemic Cercomacra carbonaria and isolated populations of white-river-island specialists (e.g., Mazaria propinqua). VNP protects important ecological ecotones and biogeographical contact zones, as well as 27 threatened and 45 migratory bird species. On the other hand, 71 species reported for our study area have been found outside the current boundaries of the park. Ongoing proposals of expanding the limits of the park would absorb most of these species. With its outstanding bird species richness and wide variety of habitats, VNP emerges as an important site for Amazonian avian research, tourism, and conservation. Despite the park's protected status, the Brazilian government plans to build a hydroelectric dam in the region, representing the main threat to its avifauna and overall biodiversity. |
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Laranjeiras, Thiago OrsiNaka, Luciano Nicol?sBechtoldt, Catherine L.Costa, Thiago Vernaschi Vieira daAndretti, Christian BorgesCampos-Cerqueira, MarconiFátima Torres, Marcela deLima, Gisiane RodriguesSantos, Marcos Pérsio DantasVargas, Claudeir FerreiraPacheco, Angela Midori FuruyaSardelli, Carla HaislerMazar-Barnett, JuanCohn-Haft, Mario2020-05-08T20:46:15Z2020-05-08T20:46:15Z2014https://repositorio.inpa.gov.br/handle/1/15440While many published maps of avian species richness indicate northern Amazonia to be somewhat species-poor, recent surveys reveal that this area actually possesses one of the most species-rich avifaunas in the Neotropical lowlands. Our surveys indicate that at least 520 bird species occur in Viruá National Park (VNP) and adjacent areas, which is located in the Brazilian state of Roraima (northern Amazonia). Here, we present the results of our ornithological efforts since 2001, based on audio-visual and mistnetting surveys, vouchered by tape and digital recordings, photographs, and collected specimens. VNP is dominated by Amazonian white-sand forest (locally known as campina and campinarana) on an extensive floodplain influenced by muddy-, clear-, and blackwater rivers, forming a complex mosaic of habitats that includes várzea, igapó, and hilltop "islands" with terra-firme forest. The high avian diversity found at VNP is likely due to both biogeographic and local-scale processes. Each habitat contains a particular avian assemblage. Patches of terra-firme forest have a typical Guianan avifauna. Campina and campinarana contain unique species, including some poorly known and range-restricted (e.g., Aprositornis disjuncta), as well as species typical of the northern Roraiman savannas (e.g., Icterus nigrogularis). The várzea of the Rio Branco (with its associated river islands) is particularly species-rich, including the endemic Cercomacra carbonaria and isolated populations of white-river-island specialists (e.g., Mazaria propinqua). VNP protects important ecological ecotones and biogeographical contact zones, as well as 27 threatened and 45 migratory bird species. On the other hand, 71 species reported for our study area have been found outside the current boundaries of the park. Ongoing proposals of expanding the limits of the park would absorb most of these species. With its outstanding bird species richness and wide variety of habitats, VNP emerges as an important site for Amazonian avian research, tourism, and conservation. Despite the park's protected status, the Brazilian government plans to build a hydroelectric dam in the region, representing the main threat to its avifauna and overall biodiversity.Volume 22, Número 2, Pags. 138-171Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessAvifaunaBiological SurveyCommunity CompositionEndangered SpeciesEnvironmental RiskForest EcosystemHabitat MosaicHabitat TypeIsolated PopulationMigratory SpeciesNeotropical RegionSpecies DiversitySpecies RichnessBranco RiverBrasilRoraimaVirua National ParkThe avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazoniainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Brasileira de Ornitologiaengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALavifauna.pdfavifauna.pdfapplication/pdf1761805https://repositorio.inpa.gov.br/bitstream/1/15440/1/avifauna.pdf0d6b4da66ebbdb148bea443c0f6824b4MD511/154402020-07-14 11:07:08.21oai:repositorio:1/15440Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T15:07:08Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.en.fl_str_mv |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
title |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
spellingShingle |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia Laranjeiras, Thiago Orsi Avifauna Biological Survey Community Composition Endangered Species Environmental Risk Forest Ecosystem Habitat Mosaic Habitat Type Isolated Population Migratory Species Neotropical Region Species Diversity Species Richness Branco River Brasil Roraima Virua National Park |
title_short |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
title_full |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
title_fullStr |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
title_full_unstemmed |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
title_sort |
The avifauna of Viruá National Park, Roraima, reveals megadiversity in Northern Amazonia |
author |
Laranjeiras, Thiago Orsi |
author_facet |
Laranjeiras, Thiago Orsi Naka, Luciano Nicol?s Bechtoldt, Catherine L. Costa, Thiago Vernaschi Vieira da Andretti, Christian Borges Campos-Cerqueira, Marconi Fátima Torres, Marcela de Lima, Gisiane Rodrigues Santos, Marcos Pérsio Dantas Vargas, Claudeir Ferreira Pacheco, Angela Midori Furuya Sardelli, Carla Haisler Mazar-Barnett, Juan Cohn-Haft, Mario |
author_role |
author |
author2 |
Naka, Luciano Nicol?s Bechtoldt, Catherine L. Costa, Thiago Vernaschi Vieira da Andretti, Christian Borges Campos-Cerqueira, Marconi Fátima Torres, Marcela de Lima, Gisiane Rodrigues Santos, Marcos Pérsio Dantas Vargas, Claudeir Ferreira Pacheco, Angela Midori Furuya Sardelli, Carla Haisler Mazar-Barnett, Juan Cohn-Haft, Mario |
author2_role |
author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Laranjeiras, Thiago Orsi Naka, Luciano Nicol?s Bechtoldt, Catherine L. Costa, Thiago Vernaschi Vieira da Andretti, Christian Borges Campos-Cerqueira, Marconi Fátima Torres, Marcela de Lima, Gisiane Rodrigues Santos, Marcos Pérsio Dantas Vargas, Claudeir Ferreira Pacheco, Angela Midori Furuya Sardelli, Carla Haisler Mazar-Barnett, Juan Cohn-Haft, Mario |
dc.subject.eng.fl_str_mv |
Avifauna Biological Survey Community Composition Endangered Species Environmental Risk Forest Ecosystem Habitat Mosaic Habitat Type Isolated Population Migratory Species Neotropical Region Species Diversity Species Richness Branco River Brasil Roraima Virua National Park |
topic |
Avifauna Biological Survey Community Composition Endangered Species Environmental Risk Forest Ecosystem Habitat Mosaic Habitat Type Isolated Population Migratory Species Neotropical Region Species Diversity Species Richness Branco River Brasil Roraima Virua National Park |
description |
While many published maps of avian species richness indicate northern Amazonia to be somewhat species-poor, recent surveys reveal that this area actually possesses one of the most species-rich avifaunas in the Neotropical lowlands. Our surveys indicate that at least 520 bird species occur in Viruá National Park (VNP) and adjacent areas, which is located in the Brazilian state of Roraima (northern Amazonia). Here, we present the results of our ornithological efforts since 2001, based on audio-visual and mistnetting surveys, vouchered by tape and digital recordings, photographs, and collected specimens. VNP is dominated by Amazonian white-sand forest (locally known as campina and campinarana) on an extensive floodplain influenced by muddy-, clear-, and blackwater rivers, forming a complex mosaic of habitats that includes várzea, igapó, and hilltop "islands" with terra-firme forest. The high avian diversity found at VNP is likely due to both biogeographic and local-scale processes. Each habitat contains a particular avian assemblage. Patches of terra-firme forest have a typical Guianan avifauna. Campina and campinarana contain unique species, including some poorly known and range-restricted (e.g., Aprositornis disjuncta), as well as species typical of the northern Roraiman savannas (e.g., Icterus nigrogularis). The várzea of the Rio Branco (with its associated river islands) is particularly species-rich, including the endemic Cercomacra carbonaria and isolated populations of white-river-island specialists (e.g., Mazaria propinqua). VNP protects important ecological ecotones and biogeographical contact zones, as well as 27 threatened and 45 migratory bird species. On the other hand, 71 species reported for our study area have been found outside the current boundaries of the park. Ongoing proposals of expanding the limits of the park would absorb most of these species. With its outstanding bird species richness and wide variety of habitats, VNP emerges as an important site for Amazonian avian research, tourism, and conservation. Despite the park's protected status, the Brazilian government plans to build a hydroelectric dam in the region, representing the main threat to its avifauna and overall biodiversity. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2020-05-08T20:46:15Z |
dc.date.available.fl_str_mv |
2020-05-08T20:46:15Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.inpa.gov.br/handle/1/15440 |
url |
https://repositorio.inpa.gov.br/handle/1/15440 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Volume 22, Número 2, Pags. 138-171 |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Revista Brasileira de Ornitologia |
publisher.none.fl_str_mv |
Revista Brasileira de Ornitologia |
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reponame:Repositório Institucional do INPA instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
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Instituto Nacional de Pesquisas da Amazônia (INPA) |
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INPA |
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Repositório Institucional do INPA |
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Repositório Institucional do INPA |
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https://repositorio.inpa.gov.br/bitstream/1/15440/1/avifauna.pdf |
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