CollPotvinMessierEtAl2008

Référence

Coll, L., Potvin, C., Messier, C., Delagrange, S. (2008) Root architecture and allocation patterns of eight native tropical species with different successional status used in open-grown mixed plantations in Panama. Trees - Structure and Function, 22(4):585-596.

Résumé

We investigated biomass allocation and root architecture of eight tropical species with different successional status, as classified from the literature, along a size gradient up to 5 m. We focused on belowground development, which has received less attention than aboveground traits. A discriminant analysis based upon a combination of allocational and architectural traits clearly distinguished functional types and classified species according to successional status at a 100% success rate. For a given plant diameter, the pioneer species presented similar root biomass compared to the non-pioneer ones but higher cumulative root length and a higher number of root apices. A detailed study on the root system of a sub-sample of three species showed that the most late-successional species (Tabebuia rosea) had longer root internodes and a higher proportion of root biomass allocated to the taproot compared to the other two species (Hura crepitans and Luehea seemannii). Most pioneer species showed a higher leaf area ratio due to a higher specific leaf area (SLA). We conclude that the functional differences between pioneer and non-pioneer tree species found in natural forests were maintained in open-grown plantation conditions.

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@ARTICLE { CollPotvinMessierEtAl2008,
    AUTHOR = { Coll, L. and Potvin, C. and Messier, C. and Delagrange, S. },
    TITLE = { Root architecture and allocation patterns of eight native tropical species with different successional status used in open-grown mixed plantations in Panama },
    JOURNAL = { Trees - Structure and Function },
    YEAR = { 2008 },
    VOLUME = { 22 },
    PAGES = { 585-596 },
    NUMBER = { 4 },
    MONTH = { aug },
    AF = { Coll, LluisEOLEOLPotvin, CatherineEOLEOLMessier, ChristianEOLEOLDelagrange, Sylvain },
    DE = { allocation; allometry; root architecture; successional status; tropicalEOLEOLplantation },
    DI = { 10.1007/s00468-008-0219-6 },
    PG = { 12 },
    SN = { 0931-1890 },
    UT = { ISI:000257385200019 },
    ABSTRACT = { We investigated biomass allocation and root architecture of eight tropical species with different successional status, as classified from the literature, along a size gradient up to 5 m. We focused on belowground development, which has received less attention than aboveground traits. A discriminant analysis based upon a combination of allocational and architectural traits clearly distinguished functional types and classified species according to successional status at a 100% success rate. For a given plant diameter, the pioneer species presented similar root biomass compared to the non-pioneer ones but higher cumulative root length and a higher number of root apices. A detailed study on the root system of a sub-sample of three species showed that the most late-successional species (Tabebuia rosea) had longer root internodes and a higher proportion of root biomass allocated to the taproot compared to the other two species (Hura crepitans and Luehea seemannii). Most pioneer species showed a higher leaf area ratio due to a higher specific leaf area (SLA). We conclude that the functional differences between pioneer and non-pioneer tree species found in natural forests were maintained in open-grown plantation conditions. },
    KEYWORDS = { TEMPERATE RAIN-FOREST; SHADE TOLERANCE; NEOTROPICAL FOREST; COMMUNITY COMPOSITION; BIOMASS DISTRIBUTION; RELATIVE IMPORTANCE; TREE ARCHITECTURE; USE EFFICIENCY; ADULT STATURE; MOIST-FOREST },
}

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