Use este identificador para citar ou linkar para este item: http://repositorio.inpa.gov.br/handle/123/1798
Título: Soil physical constraints limit palm and tree basal area in Amazonian forests
Autor(es): EMILIO, THAISE
Carlos Alberto Nobre Quesada
COSTA, FLÁVIA
MAGNUSSON, WILLIAM E.
SCHIETTI, JULIANA
FELDPAUSCH, TED R.
BRIENEN, ROEL J. W.
BAKER, TIMOTHY R.
Chave, Jerome
ÁLVAREZ, ESTEBÁN
ARAÚJO, ALEJANDRO
BÁNKI, OLAF
CASTILHO, CAROLINA V.
HONÓRIO C., EURIDICE N.
KILLEEN, TIMOTHY J.
MALHI, YADVINDER
MENDOZA, ERICK M. OBLITAS
Monteagudo, Abel
NEILL, DAVID
PARADA, GERMAINE ALEXANDER
PEÑA-CRUZ, ANTONIO
RAMIREZ-ANGULO, HIRMA
SCHWARZ, MICHAEL
SILVEIRA, MARCOS
TER STEEGE, HANS
TERBORGH, JOHN W.
THOMAS, RAQUEL
LEZAMA, ARMANDO TORRE
VILANOVA, EMILIO
Phillips, Oliver L.
ISSN: 1755-0874
Revista: Plant Ecology & Diversity
Volume: 9
Resumo: Background: Trees and arborescent palms adopt different rooting strategies and responses to physical limitations imposed by soil structure, depth and anoxia. However, the implications of these differences for understanding variation in the relative abundance of these groups have not been explored.Aims: We analysed the relationship between soil physical constraints and tree and palm basal area to understand how the physical properties of soil are directly or indirectly related to the structure and physiognomy of lowland Amazonian forests.Methods: We analysed inventory data from 74 forest plots across Amazonia, from the RAINFOR and PPBio networks for which basal area, stand turnover rates and soil data were available. We related patterns of basal area to environmental variables in ordinary least squares and quantile regression models.Results: Soil physical properties predicted the upper limit for basal area of both trees and palms. This relationship was direct for palms but mediated by forest turnover rates for trees. Soil physical constraints alone explained up to 24% of palm basal area and, together with rainfall, up to 18% of tree basal area. Tree basal area was greatest in forests with lower turnover rates on well-structured soils, while palm basal area was high in weakly structured soils.Conclusions: Our results show that palms and trees are associated with different soil physical conditions. We suggest that adaptations of these life-forms drive their responses to soil structure, and thus shape the overall forest physiognomy of Amazonian forest vegetation.
URI: http://repositorio.inpa.gov.br/handle/123/1798
ISSN: 1755-0874
DOI: https://dx.doi.org/10.1080/17550874.2013.772257
Aparece nas coleções:Coordenação de Dinâmica Ambiental (CDAM)

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