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| Carvalho,Ellen Cristina Dantas; Martins,Fernando Roberto; Soares,Arlete Aparecida; Oliveira,Rafael Silva; Muniz,Celli Rodrigues; Araújo,Francisca Soares. |
| Xylem anatomical traits can provide insights regarding the mechanisms affecting the distribution of vascular plants across environmental gradients. In this study, we aimed to investigate the hypothesis that lianas occurring in semiarid environments have characteristics that maximize the xylem resistance to tension-induced cavitation along the root-stem-branch continuum. To gather information regarding the hydraulic architecture of the lianas, we analyzed several anatomical traits of wood: cross-sectional area occupied by the parenchyma (AP), fibers (AF), and vessels (AV); average vessel diameter (d); wood density (WD); pit diameter in the vessel wall (dpit); pit density (Npit), and potential hydraulic conductivity (Kp) in branches, stems, and roots of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Potential hydraulic conductivity; Vessel diameter; Wood anatomy; Wood density; Xylem. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200198 |
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| Rosado,Bruno Henrique Pimentel; Martins,Amanda Cristina; Colomeu,Talita Cristina; Oliveira,Rafael Silva; Joly,Carlos Alfredo; Aidar,Marcos Pereira Marinho. |
| Fine roots, <2 mm in diameter, are responsible for water and nutrient uptake and therefore have a central role in carbon, nutrient and water cycling at the plant and ecosystem level. The root length density (RLD), fine root biomass (FRB) and vertical fine root distribution (VRD) in the soil profile have been used as good descriptors of resource-use efficiency and carbon storage in the soil. Along altitudinal gradients, decreases in temperature and radiation inputs (depending on the frequency of fog events) may reduce decomposition rates and nutrient availability what might stimulate plants to invest in fine roots, increasing acquisition of resources. We evaluated the seasonal variation of fine root parameters in a Lowland and Montane forest at the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitudinal variation; Fine root parameters; Vertical distribution of fine roots; Seasonality; Atlantic rain forest. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300018 |
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