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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/4286

Title: Long-lived light-demanding emergents in southern temperate forests: the case of Weinmannia trichosperma (Cunoniaceae) in Chile
Authors: Lusk, C.H.
Keywords: Forest dynamics; Temperate rainforest; Trade-offs; Tree growth rates; Tree lifespans; Tree life histories
Issue Date: 1999
Publisher: Springer Netherlands
Citation: Plant Ecology 140 (1):111-115
Abstract: The prevailing paradigm of tree life histories emphasises strong interrelationships between growth, longevity and reproductive traits, attributing contrasting suites of correlated traits to pioneer and climax or non-pioneer species. In tropical and southern temperate rainforests, although many of the species that require large gaps for regeneration conform to the expectations of small size and short lifespan, a number of others are long-lived canopy or emergent trees. Age data reported here for Weinmannia trichosperma, a shade-intolerant emergent tree in the temperate rainforests of southern Chile, indicate a maximum lifespan (>730 yr) exceeding those previously reported for any other angiosperm of the region. The long lifespan of W. trichosperma is associated with relatively slow growth, reflecting investment of resources in dense wood and possibly other defensive traits. Growth rates of W. trichosperma are much slower than those of associated short-lived pioneer trees, and apparently also slower than some of its more shade-tolerant associates. The light-demanding nature of many of the longest-lived trees in southern temperate forests highlights an important limitation of the classical pioneer-climax paradigm as a framework for understanding tree life history variation and modelling forest dynamics in this biome.
Description: Lusk, C.H. Instituto de Biología Vegetal y Biotecnología, Universidad de Talca, Casilla 747, Talca, Chile.
URI: http://dspace.utalca.cl/handle/1950/4286
ISSN: 1385-0237
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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