2001
DOI: 10.1139/x00-157
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Characterizing shade tolerance by the relationship between mortality and growth in tree saplings in a southeastern Texas forest

Abstract: We investigated the relationship between shade tolerance and sapling mortality using data collected over 15 years in a mesic forest in southeastern Texas. Seven species representing a range of shade-tolerance classes were included in the study. We used survival analysis to estimate species-specific sapling mortality risk (hazard) as a function of recent growth. We found that shade-intolerant species had higher mortality risk at zero growth than shade-tolerant species. The results strongly support the point tha… Show more

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Cited by 19 publications
(23 citation statements)
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“…IV), suggesting that codominant trees are more prone to die with increasing age and/or stand density. Conversely, the risk associated with tree mortality for subcanopy trees can be exacerbated by shade-induced stress, sometimes associated with the inability of shade intolerant species to maintain viable growth rates under high competition and dense canopy conditions (Lin et al, 2001;Waring, 1987).…”
Section: Discussionmentioning
confidence: 99%
“…IV), suggesting that codominant trees are more prone to die with increasing age and/or stand density. Conversely, the risk associated with tree mortality for subcanopy trees can be exacerbated by shade-induced stress, sometimes associated with the inability of shade intolerant species to maintain viable growth rates under high competition and dense canopy conditions (Lin et al, 2001;Waring, 1987).…”
Section: Discussionmentioning
confidence: 99%
“…Growth is an integrative measure of tree vitality which, at a young age, depends principally on competition. For a given size, fast growing individuals are supposed to have a higher survivorship than slow growing individuals (Bigler and Bugmann 2003;Kobe and Coates 1997;Kunstler et al 2005;Lin et al 2001;Monserud 1976;Wyckoff and Clark 2000;. In combination with growth, tree diameter is a good index of sensitivity to disturbances.…”
Section: The Tree Mortality Processmentioning
confidence: 99%
“…Some authors studied only carbon balance related mortality using growth as covariate (Bigler and Bugmann, 2003;Dobbertin, 2005;Kobe and Coates, 1997;Kunstler et al, 2005;Lin et al, 2001;Monserud, 1976;Wyckoff and Clark, 2000;Wyckoff and Clark, 2002). A limitation of this approach is that growth-mortality models alone are not sufficient for a good description of mortality as disturbances are not taken into account in the mortality process.…”
Section: A Model Combining Size-dependent and Growthdependent Mortalitymentioning
confidence: 99%
“…Research has generally shown that shadetolerant tree species are less sensitive, in term of mortality, to reductions in growth caused by resource depletion than shade-intolerant ones (Kobe et al 1995). Several studies have demonstrated that mortality of seedlings and saplings increases with a reduction in radial growth (Glitzenstein et al 1986;Kobe et al 1995;Lin et al 2001), but this phenomenon is poorly documented for adult trees (but see Manokaran and Kochummen 1987). In old trees, senescence is the cause of much of the mortality attributable to endogenous factors.…”
Section: Introductionmentioning
confidence: 99%