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    Author(s): S.J. Bucci; F.G. Scholz; G. Goldstein; F.C. Meinzer; A.C. Franco; P.I. Campanello; R. Villalobos-Vega; M. Bustamante; F. Miralles-Wilhelm
    Date: 2006
    Source: Plant, Cell and Environment. 29(12): 2153-2167
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (0 B)

    Description

    Several plant functional traits were studied in five dominant woody savanna species in a Brazilian savanna to determine whether removal of nutrient limitations has an effect on carbon allocation, water relations, and hydraulic architecture. Four treatments consisting of a control, and nitrogen (N), phosphorus (P), and N plus P additions were maintained for 5 years. Nitrogen fertilization significantly altered several components of hydraulic architecture. In addition, long-term N and N plus P fertilization caused midday leaf water potential to decline significantly by a mean of 0.6 MPa across all species. Decreases in leaf water potential appeared to be almost entirely compensated by increases in xylem resistance to embolism.

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    Citation

    Bucci, S.J.; Scholz, F.G.; Goldstein, G.; Meinzer, F.C.; Franco, A.C.; Campanello, P.I.; Villalobos-Vega, R.; Bustamante, M.; Miralles-Wilhelm, F. 2006. Nutrient availability constrains the hydraulic architecture and water relations of savannah trees. Plant, Cell and Environment. 29(12): 2153-2167

    Keywords

    Fertilization effects, hydraulic conductivity, xylem embolism

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