Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Braz. J. Plant Physiol. (2) Autor Bucci,Sandra J. (2) Franco,Augusto C. (2) Goldstein,Guillermo (2) Meinzer,Frederick C. (2) Scholz,Fabian G. (2) Hao,Guang-You (1) Salazar,Ana (1) Zhang,Yongjiang (1) Mais... Palavra-chave Gallery forest (1) Hydraulic architecture (1) Hydraulic conductivity (1) Isohydric behavior (1) Nutrients (1) Savanna (1) Savannas (1) Soil water potential and water content (1) Specific leaf area (1) Stomatal conductance (1) Transpiration (1) Wood density (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2008 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Plant- and stand-level variation in biophysical and physiological traits along tree density gradients in the Cerrado Braz. J. Plant Physiol. Scholz,Fabian G.; Bucci,Sandra J.; Goldstein,Guillermo; Meinzer,Frederick C.; Franco,Augusto C.; Salazar,Ana. The objective of this study was to characterize and understand morphological and physiological variation in traits related to water economy, at the plant and stand level, along a gradient of tree density in a Neotropical savanna (Cerrado). Cerrado plots subjected to long-term fertilization and gallery forests were also included in the analysis to expand the axes of ecosystem variation. Consistent changes in stand level biophysical traits observed along the gradient of increasing tree density included a decrease in weighted-average wood density, and increases in leaf surface area per plant, leaf specific hydraulic conductivity, specific leaf area and stomatal conductance. A conceptual model of biophysical, morphological and physiological trait interactions... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gallery forest; Hydraulic architecture; Nutrients; Savannas; Specific leaf area; Wood density. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000300006 Water relations and hydraulic architecture in Cerrado trees: adjustments to seasonal changes in water availability and evaporative demand Braz. J. Plant Physiol. Bucci,Sandra J.; Scholz,Fabian G.; Goldstein,Guillermo; Meinzer,Frederick C.; Franco,Augusto C.; Zhang,Yongjiang; Hao,Guang-You. We determined adjustments in physiology and morphology that allow Neotropical savanna trees from central Brazil (Cerrado) to avoid water deficits and to maintain a nearly constant internal water balance despite seasonal changes in precipitation and air saturation deficit (D). Precipitation in the study area is highly seasonal with about five nearly rainless months during which D is two fold higher compared to wet season values. As a consequence of the seasonal fluctuations in rainfall and D, soil water potential changes substantially in the upper 100 cm of soil, but remains nearly constant below 2 m depth. Hydraulic architecture and water relations traits of Cerrado trees adjusted during the dry season to prevent increasing water deficits and insure... Tipo: Info:eu-repo/semantics/article Palavras-chave: Isohydric behavior; Hydraulic conductivity; Soil water potential and water content; Savanna; Stomatal conductance; Transpiration. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000300007 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco