Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon
Aim The aim of this study was to use compositional changes in tree species along the Amazon River floodplain in Brazil to identify and characterize biogeographic regions that would serve as broad surrogates for conservation planning. Location The main course of the Amazon River in Brazil, covering a...
| Autor principal: | Albernaz, Ana Luísa Kerti Mangabeira |
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| Outros Autores: | Pressey, Robert Leslie, Costa, Luiz R F, Moreira, Marcelo P., Ramos, José Ferreira, Assunção, Paulo Apóstolo Costa Lima, Franciscon, Carlos Henrique |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Biogeography
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18051 |
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oai:repositorio:1-18051 |
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oai:repositorio:1-18051 Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon Albernaz, Ana Luísa Kerti Mangabeira Pressey, Robert Leslie Costa, Luiz R F Moreira, Marcelo P. Ramos, José Ferreira Assunção, Paulo Apóstolo Costa Lima Franciscon, Carlos Henrique Biogeography Cluster Analysis Community Composition Conservation Management Ecoregion Environmental Effect Estuarine Environment Floodplain Geomorphology Rainfall Regression Analysis Spatial Analysis Spatial Variation Standardization Amazon River Amazonas Brasil Aim The aim of this study was to use compositional changes in tree species along the Amazon River floodplain in Brazil to identify and characterize biogeographic regions that would serve as broad surrogates for conservation planning. Location The main course of the Amazon River in Brazil, covering a river distance of approximately 2800km. Methods Two sampling methods were employed at specific sites: standardized transects and/or individual-based samples. Seventy-three samples were collected from 26 sites at approximately 100-km intervals along the floodplain. Biogeographic regions were identified by non-metric multidimensional scaling (NMDS) ordination and by a hierarchical cluster analysis. The relative influence of environmental components (flood depths, annual rainfall, and length of the dry season) on tree species composition and one spatial component (longitude) were analysed by multiple regressions against a one-dimensional NMDS ordination axis. Results Based on tree species composition, three main biogeographic regions were identified: a western region between Tabatinga and the Negro River confluence; a central region from the Negro River confluence to the Xingu confluence; and an estuarine region from the Xingu confluence to Santana. The regions identified were consistent using different data sets and analytical techniques. Mixed environmental and spatial effects explained most of the variation, but the spatial effect alone had a greater influence on species composition than environmental effects alone. Main conclusions The regions delimited in the analyses differed from those based on geomorphology or World Wildlife Fund (WWF) ecoregions. These results reinforce the need for surrogates to be tested against biological data before they are used to shape approaches to conservation planning. Although a protected area coverage of 25% gives the impression of extensive conservation management on the floodplain, less than 1% of the Amazon's floodplain in Brazil is strictly protected. The significant compositional differences between regions and the strong spatial variation along the Amazon indicate that strict protection areas should be distributed much more evenly within and between regions. © 2011 Blackwell Publishing Ltd. 2020-06-15T21:51:13Z 2020-06-15T21:51:13Z 2012 Artigo https://repositorio.inpa.gov.br/handle/1/18051 10.1111/j.1365-2699.2011.02640.x en Volume 39, Número 5, Pags. 869-883 Restrito Journal of Biogeography |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biogeography Cluster Analysis Community Composition Conservation Management Ecoregion Environmental Effect Estuarine Environment Floodplain Geomorphology Rainfall Regression Analysis Spatial Analysis Spatial Variation Standardization Amazon River Amazonas Brasil |
| spellingShingle |
Biogeography Cluster Analysis Community Composition Conservation Management Ecoregion Environmental Effect Estuarine Environment Floodplain Geomorphology Rainfall Regression Analysis Spatial Analysis Spatial Variation Standardization Amazon River Amazonas Brasil Albernaz, Ana Luísa Kerti Mangabeira Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| topic_facet |
Biogeography Cluster Analysis Community Composition Conservation Management Ecoregion Environmental Effect Estuarine Environment Floodplain Geomorphology Rainfall Regression Analysis Spatial Analysis Spatial Variation Standardization Amazon River Amazonas Brasil |
| description |
Aim The aim of this study was to use compositional changes in tree species along the Amazon River floodplain in Brazil to identify and characterize biogeographic regions that would serve as broad surrogates for conservation planning. Location The main course of the Amazon River in Brazil, covering a river distance of approximately 2800km. Methods Two sampling methods were employed at specific sites: standardized transects and/or individual-based samples. Seventy-three samples were collected from 26 sites at approximately 100-km intervals along the floodplain. Biogeographic regions were identified by non-metric multidimensional scaling (NMDS) ordination and by a hierarchical cluster analysis. The relative influence of environmental components (flood depths, annual rainfall, and length of the dry season) on tree species composition and one spatial component (longitude) were analysed by multiple regressions against a one-dimensional NMDS ordination axis. Results Based on tree species composition, three main biogeographic regions were identified: a western region between Tabatinga and the Negro River confluence; a central region from the Negro River confluence to the Xingu confluence; and an estuarine region from the Xingu confluence to Santana. The regions identified were consistent using different data sets and analytical techniques. Mixed environmental and spatial effects explained most of the variation, but the spatial effect alone had a greater influence on species composition than environmental effects alone. Main conclusions The regions delimited in the analyses differed from those based on geomorphology or World Wildlife Fund (WWF) ecoregions. These results reinforce the need for surrogates to be tested against biological data before they are used to shape approaches to conservation planning. Although a protected area coverage of 25% gives the impression of extensive conservation management on the floodplain, less than 1% of the Amazon's floodplain in Brazil is strictly protected. The significant compositional differences between regions and the strong spatial variation along the Amazon indicate that strict protection areas should be distributed much more evenly within and between regions. © 2011 Blackwell Publishing Ltd. |
| format |
Artigo |
| author |
Albernaz, Ana Luísa Kerti Mangabeira |
| author2 |
Pressey, Robert Leslie Costa, Luiz R F Moreira, Marcelo P. Ramos, José Ferreira Assunção, Paulo Apóstolo Costa Lima Franciscon, Carlos Henrique |
| author2Str |
Pressey, Robert Leslie Costa, Luiz R F Moreira, Marcelo P. Ramos, José Ferreira Assunção, Paulo Apóstolo Costa Lima Franciscon, Carlos Henrique |
| title |
Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| title_short |
Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| title_full |
Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| title_fullStr |
Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| title_full_unstemmed |
Tree species compositional change and conservation implications in the white-water flooded forests of the Brazilian Amazon |
| title_sort |
tree species compositional change and conservation implications in the white-water flooded forests of the brazilian amazon |
| publisher |
Journal of Biogeography |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18051 |
| _version_ |
1787143361320189952 |
| score |
11.675608 |