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Acclimation of phot...
Acclimation of photosynthetic capacity and foliar respiration in Andean tree species to temperature change
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Cox, A. J. F. (författare)
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Hartley, I. P. (författare)
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Meir, P. (författare)
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Sitch, S. (författare)
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- Dusenge, Mirindi Eric, 1986 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Restrepo, Z. (författare)
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Gonzalez-Caro, S. (författare)
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Villegas, J. C. (författare)
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- Uddling, Johan, 1972 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Mercado, L. M. (författare)
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(creator_code:org_t)
- 2023-03-29
- 2023
- Engelska.
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Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 238:6, s. 2329-2344
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Climate warming is causing compositional changes in Andean tropical montane forests (TMFs). These shifts are hypothesised to result from differential responses to warming of cold- and warm-affiliated species, with the former experiencing mortality and the latter migrating upslope. The thermal acclimation potential of Andean TMFs remains unknown. Along a 2000m Andean altitudinal gradient, we planted individuals of cold- and warm-affiliated species (under common soil and irrigation), exposing them to the hot and cold extremes of their thermal niches, respectively. We measured the response of net photosynthesis (A(net)), photosynthetic capacity and leaf dark respiration (R-dark) to warming/cooling, 5 months after planting. In all species, A(net) and photosynthetic capacity at 25 degrees C were highest when growing at growth temperatures (T-g) closest to their thermal means, declining with warming and cooling in cold-affiliated and warm-affiliated species, respectively. When expressed at T-g, photosynthetic capacity and Rdark remained unchanged in cold-affiliated species, but the latter decreased in warm-affiliated counterparts. R-dark at 25 degrees C increased with temperature in all species, but remained unchanged when expressed at T-g. Both species groups acclimated to temperature, but only warm-affiliated species decreased R-dark to photosynthetic capacity ratio at T-g as temperature increased. This could confer them a competitive advantage under future warming.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- acclimation
- elevation gradient
- photosynthesis
- respiration
- tropical
- montane forests
- tropical rain-forest
- leaf respiration
- thermal-acclimation
- elevated-temperatures
- biochemical-model
- carbon fluxes
- nitrogen
- climate
- responses
- co2
- Plant Sciences
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Cox, A. J. F.
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Hartley, I. P.
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Meir, P.
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Sitch, S.
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Dusenge, Mirindi ...
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Restrepo, Z.
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visa fler...
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Gonzalez-Caro, S ...
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Villegas, J. C.
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Uddling, Johan, ...
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Mercado, L. M.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
- Artiklar i publikationen
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New Phytologist
- Av lärosätet
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Göteborgs universitet