Artículo

Meinzer, F.C.; Campanello, P.I.; Domec, J.-C.; Gatti, M.G.; Goldstein, G.; Villalobos-Vega, R.; Woodruff, D.R. "Constraints on physiological function associated with branch architecture and wood density in tropical forest trees" (2008) Tree Physiology. 28(11):1609-1617
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Abstract:

This study examined how leaf and stem functional traits related to gas exchange and water balance scale with two potential proxies for tree hydraulic architecture: the leaf area:sapwood area ratio (AL:AS) and wood density (ρw). We studied the upper crowns of individuals of 15 tropical forest tree species at two sites in Panama with contrasting moisture regimes and forest types. Transpiration and maximum photosynthetic electron transport rate (ETRmax) per unit leaf area declined sharply with increasing AL:AS, as did the ratio of ETR max to leaf N content, an index of photosynthetic nitrogen-use efficiency. Midday leaf water potential, bulk leaf osmotic potential at zero turgor, branch xylem specific conductivity, leaf-specific conductivity and stem and leaf capacitance all declined with increasing ρw. At the branch scale, AL:AS and total leaf N content per unit sapwood area increased with ρw, resulting in a 30% increase in ETRmax per unit sapwood area with a doubling of ρw. These compensatory adjustments in AL:AS, N allocation and potential photosynthetic capacity at the branch level were insufficient to completely offset the increased carbon costs of producing denser wood, and exacerbated the negative impact of increasing ρw on branch hydraulics and leaf water status. The suite of tree functional and architectural traits studied appeared to be constrained by the hydraulic and mechanical consequences of variation in ρw. © 2008 Heron Publishing.

Registro:

Documento: Artículo
Título:Constraints on physiological function associated with branch architecture and wood density in tropical forest trees
Autor:Meinzer, F.C.; Campanello, P.I.; Domec, J.-C.; Gatti, M.G.; Goldstein, G.; Villalobos-Vega, R.; Woodruff, D.R.
Filiación:USDA Forest Service, Pacific Northwest Research Station, Corvallis, OR 97331, United States
Laboratorio de Ecología Funcional, Departamento de Ecología, Genética Y Evolución, Universidad de Buenos Aires, Buenos Aires (C1428EHA), Argentina
Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, United States
Department of Biology, University of Miami, Coral Gables, FL 33124, United States
Palabras clave:Capacitance; Functional convergence; Hydraulic architecture; Osmotic potential; Photosynthesis; Transpiration; Water potential; forest canopy; leaf; moisture; osmosis; photosynthesis; tropical forest; wood
Año:2008
Volumen:28
Número:11
Página de inicio:1609
Página de fin:1617
DOI: http://dx.doi.org/10.1093/treephys/28.11.1609
Título revista:Tree Physiology
Título revista abreviado:Tree Physiol.
ISSN:0829318X
CODEN:TRPHE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0829318X_v28_n11_p1609_Meinzer

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Citas:

---------- APA ----------
Meinzer, F.C., Campanello, P.I., Domec, J.-C., Gatti, M.G., Goldstein, G., Villalobos-Vega, R. & Woodruff, D.R. (2008) . Constraints on physiological function associated with branch architecture and wood density in tropical forest trees. Tree Physiology, 28(11), 1609-1617.
http://dx.doi.org/10.1093/treephys/28.11.1609
---------- CHICAGO ----------
Meinzer, F.C., Campanello, P.I., Domec, J.-C., Gatti, M.G., Goldstein, G., Villalobos-Vega, R., et al. "Constraints on physiological function associated with branch architecture and wood density in tropical forest trees" . Tree Physiology 28, no. 11 (2008) : 1609-1617.
http://dx.doi.org/10.1093/treephys/28.11.1609
---------- MLA ----------
Meinzer, F.C., Campanello, P.I., Domec, J.-C., Gatti, M.G., Goldstein, G., Villalobos-Vega, R., et al. "Constraints on physiological function associated with branch architecture and wood density in tropical forest trees" . Tree Physiology, vol. 28, no. 11, 2008, pp. 1609-1617.
http://dx.doi.org/10.1093/treephys/28.11.1609
---------- VANCOUVER ----------
Meinzer, F.C., Campanello, P.I., Domec, J.-C., Gatti, M.G., Goldstein, G., Villalobos-Vega, R., et al. Constraints on physiological function associated with branch architecture and wood density in tropical forest trees. Tree Physiol. 2008;28(11):1609-1617.
http://dx.doi.org/10.1093/treephys/28.11.1609