Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/18073
Título: The width of riparian habitats for understory birds in an Amazonian forest
Autor: Bueno, Anderson Saldanha
Bruno, Renato Saragoça
Pimentel, Tânia Pena
Sanaiotti, Tânia Margarete
Magnusson, William Ernest
Palavras-chave: Abundance
Biodiversity
Bird
Buffer Zone
Clay
Community Composition
Community Structure
Environmental Gradient
Environmental Legislation
Forest Ecosystem
Habitat Conservation
Habitat Use
Land Management
Neotropical Region
Riparian Forest
Streamwater
Tropical Forest
Understory
Animals
Bird
Demography
Ecosystem
Environmental Monitoring
Environmental Protection
Legal Aspect
Methodology
Physiology
River
Tree
Animal
Birds
Conservation Of Natural Resources
Demography
Ecosystem
Environmental Monitoring
Rivers
Trees
Amazonia
Aves
Data do documento: 2012
Revista: Ecological Applications
É parte de: Volume 22, Número 2, Pags. 722-734
Abstract: Riparian habitats are important for the maintenance of regional biodiversity. Many studies have compared bird distributions between riparian and non-riparian habitats but have not established how wide riparian habitats used by birds are, as measured by distance from the nearest stream. We investigated the distribution of understory birds along gradients of distance from streams, soil clay content, and slope in a central Amazonian forest, by mistnetting birds three times in 45 plots. We used nonmetric multidimensional scaling (NMDS) to reduce the dimensionality of species quantitative (abundance) and qualitative (presence- absence) composition to one multivariate axis. Estimates of the width of riparian habitats as indicated by understory birds depended on the community attribute considered, measuring 90 m for species quantitative composition and 140 m for species qualitative composition. Species distributions were correlated with clay content but were independent of slope, while distance from streams was positively correlated with clay content but independent of slope. Clay content affects plant species composition, which in turn, may influence bird species composition. However, distribution patterns of birds in relation to distance from streams are consistent among studies carried out in many different temperate and tropical regions, indicating an effect of distance from streams itself. Protection of riparian habitats is one of the most widely used conservation strategies, and Brazilian environmental legislation mandates the protection of a 30 m wide strip of riparian vegetation on either side of small streams. We show that the protected strip should be much wider and recommend strategies to place other forms of land protection contiguous with riparian areas so that Brazilian environmental legislation better fulfills its role of protecting biodiversity associated with riparian habitats. © 2012 by the Ecological Society of America.
DOI: 10.1890/11-0789.1
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