Interaction between light and drought affect performance of Asian tropical tree species that have differing topographic affinities

Ashton, Mark S.; Singhakumara, B.M.P.; Gamage, Harshi K.

doi:10.1016/j.foreco.2005.09.017

Cited by 34 publications

(50 citation statements)

References 44 publications

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“…1995, 2006, Gunatilleke et al 1997. For example, seedlings of Shorea worthingtonii and Mesua nagassarium are more tolerant of shade and drought than their sympatric congeners and these characteristics might explain their strong positive associations with upper-elevation spurs.…”

Section: Mechanistic Basis Of Habitat Specializationmentioning

confidence: 99%

Species–habitat associations in a Sri Lankan dipterocarp forest

et al. 2006

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Forest structure and species distribution patterns were examined among eight topographically defined habitats for the 205 species with stems > 1 cm dbh inhabiting a 2 5-ha plot in the Sinharaja rain forest, Sri Lanka. The habitats were steep spurs, less-steep spurs, steep gullies and less-steep gullies, all at either lower or upper elevations. Mean stem density was significantly greater on the upper spurs than in the lower, less-steep gullies. Stem density was also higher on spurs than in gullies within each elevation category and in each upper-elevation habitat than in its corresponding lower-elevation habitat. Basal area varied less among habitats, but followed similar trends to stem density. Species richness and Fisher's alpha were lower in the upper-elevation habitats than in the lower-elevation habitats. These differences appeared to be related to the abundances of the dominant species. Of the 125 species subjected to torus-translation tests, 99 species (abundant and less abundant and those in different strata) showed at least one positive or negative association to one or more of the habitats. Species associations were relatively more frequent with the lower-elevation gullies. These and the previous findings on seedling ecophysiology, morphology and anatomy of some of the habitat specialists suggest that edaphic and hydrological variation related to topography, accompanied by canopy disturbances of varying intensity, type and extent along the catenal landscape, plays a major role in habitat partitioning in this forest.

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Section: Mechanistic Basis Of Habitat Specializationmentioning

confidence: 99%

Species–habitat associations in a Sri Lankan dipterocarp forest

et al. 2006

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“…However, most ecophysiological studies have concentrated on the responses of plants to changes in a single variable at a time, while combined effects of different environmental factors on plant growth and physiological traits have been studied only rarely. Light and water availability are main environmental factors affecting plant survival and growth, and determining the distribution of plants at global scales (Ashton et al, 2006;Quero et al, 2006). In some previous studies, biochemical, physiological and structural responses of seedlings to the combination of drought and shade have been reported, and the results have showed both negatively and positively correlated but also independent interaction effects between shade and drought (Aranda et al, 2005;Huang et al, 2008;Duan et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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“…The knowledge of the impact of such interactions can help us to understand the adaptation of plants to different ecosystems and to develop the most appropriate forestation techniques to be used in fragile and extreme areas (Walters and Reich 1997). Therefore, investigations of the response of plants to combined drought and shade have gradually become a focus during recent years (Sack and Grubb 2002;Prider and Facelli 2004;Ashton et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Interactions between drought and shade on growth and physiological traits in two Populus cathayana populations

et al. 2008

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Abstract:The morphological and physiological responses of two contrasting Populus cathayana Rehd. populations to three light regimes, full sunlight (control), 33% full sunlight (moderate shade), and 12% full sunlight (severe shade), were investigated under well-watered and drought conditions. The populations were from Hanyuan (relatively more annual rainfall and less annual solar radiation) and Ledu (less annual rainfall and more annual solar radiation) in western China. In both populations, drought-treated plants exhibited reduced growth, leaf relative water content, net photosynthesis, and maximal efficiency of photosystem II (PSII); increased levels of chlorophyll, carotenoid, abscisic acid, and carbon isotope composition; and a greater accumulation of malondialdehyde (MDA) than did well-watered plants. There was an apparent alleviation of drought effects by moderate shade, especially in the Hanyuan population, as indicated by the higher leaf relative water content, net photosynthesis, stomatal conductance, and maximal efficiency of PSII and the lower MDA content. On the other hand, an apparent aggravation of drought effects by severe shade was also observed, especially in the Ledu population, as indicated by the lower total biomass and net photosynthesis and the higher MDA content. Moreover, the Hanyuan population was more shade tolerant and drought sensitive than the Ledu population. dans l'ouest de la Chine. Dans les deux populations, la croissance, la teneur relative en eau dans les feuilles, la photosynthèse nette et l'efficacité maximale de PSII étaient plus faibles et les quantités de chlorophylle, de carotène, d'acide abscissique, la composition isotopique du carbone ainsi que l'accumulation de propanedial étaient plus élevées chez les plants exposés à la sécheresse que chez les plants bien arrosés. Les effets de la sécheresse ont apparemment été atténués par un ombrage modéré, spécialement dans la population de Hanyuan, tel que l'indiquaient une teneur relative en eau dans les feuilles, une photosynthèse nette, une conductance stomatale et une efficacité maximale de photosystème II (PSII) plus élevées ainsi qu'un contenu en propanedial plus faible. D'un autre côté, les effets de la sécheresse ont apparemment été aggravés par des conditions très ombragées, spécialement dans la population de Ledu, tel que l'indiquaient la biomasse totale et la photosynthèse nette plus faibles ainsi que le contenu en propanedial plus élevé. De plus, la population de Hanyuan était plus tolérante à l'ombre et plus sensible à la sécheresse que la population de Ledu.[Traduit par la Rédaction]

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Interaction between light and drought affect performance of Asian tropical tree species that have differing topographic affinities

Cited by 34 publications

References 44 publications

Species–habitat associations in a Sri Lankan dipterocarp forest

Species–habitat associations in a Sri Lankan dipterocarp forest

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Interactions between drought and shade on growth and physiological traits in two Populus cathayana populations

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