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Traits controlling ...
Traits controlling shade tolerance in tropical montane trees
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Ntawuhiganayo, E. B. (author)
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Uwizeye, F. K. (author)
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Zibera, E. (author)
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Dusenge, M. E. (author)
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- Ziegler, Camille (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Ntirugulirwa, B. (author)
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Nsabimana, D. (author)
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- Wallin, Göran, 1955 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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- Uddling, Johan, 1972 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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(creator_code:org_t)
- 2019-12-19
- 2020
- English.
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In: Tree Physiology. - : Oxford University Press (OUP). - 0829-318X .- 1758-4469. ; 40:2, s. 183-197
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https://academic.oup...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Tropical canopies are complex, with multiple canopy layers and pronounced gap dynamics contributing to their high species diversity and productivity. An important reason for this complexity is the large variation in shade tolerance among different tree species. At present, we lack a clear understanding of which plant traits control this variation, e.g., regarding the relative contributions of whole-plant versus leaf traits or structural versus physiological traits. We investigated a broad range of traits in six tropical montane rainforest tree species with different degrees of shade tolerance, grown under three different radiation regimes (under the open sky or beneath sparse or dense canopies). The two distinct shade-tolerant species had higher fractional biomass in leaves and branches while shade-intolerant species invested more into stems, and these differences were greater under low radiation. Leaf respiration and photosynthetic light compensation point did not vary with species shade tolerance, regardless of radiation regime. Leaf temperatures in open plots were markedly higher in shade-tolerant species due to their low transpiration rates and large leaf sizes. Our results suggest that interspecific variation in shade tolerance of tropical montane trees is controlled by species differences in whole-plant biomass allocation strategy rather than by difference in physiological leaf traits determining leaf carbon balance at low radiation.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- biomass allocation
- leaf temperature
- plant traits
- Rwanda
- shade
- intolerance
- shade tolerance
- tropical montane forest
- rain-forest trees
- leaf life-span
- photosynthetic capacity
- relative
- importance
- biomass allocation
- ontogenic changes
- light
- growth
- acclimation
- seedlings
- Forestry
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ntawuhiganayo, E ...
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Uwizeye, F. K.
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Zibera, E.
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Dusenge, M. E.
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Ziegler, Camille
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Ntirugulirwa, B.
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show more...
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Nsabimana, D.
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Wallin, Göran, 1 ...
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Uddling, Johan, ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Environmental Sc ...
- Articles in the publication
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Tree Physiology
- By the university
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University of Gothenburg