Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance
Climate warming is expected to increase respiration rates of tropical forest trees and lianas, which may negatively affect the carbon balance of tropical forests. Thermal acclimation could mitigate the expected respiration increase, but the thermal acclimation potential of tropical forests remains l...
Autores Principales: | , , , , , |
---|---|
Formato: | Artículo (Article) |
Lenguaje: | Inglés (English) |
Publicado: |
Blackwell Publishing Ltd
2014
|
Materias: | |
Acceso en línea: | https://repository.urosario.edu.co/handle/10336/24157 https://doi.org/10.1111/gcb.12563 |
id |
ir-10336-24157 |
---|---|
recordtype |
dspace |
spelling |
ir-10336-241572022-05-02T12:37:18Z Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance Slot, Martijn Rey?Sánchez, Camilo Gerber, Stefan Lichstein, Jeremy W. Winter, Klaus Kitajima, Kaoru Acclimation Carbon balance Carbon cycle Carbon flux Climate effect Forest canopy Global warming Leaf Primary production Respiration Temperature effect Tropical forest Panama [central america] Acclimatization Biological model Carbon cycle Forest Heat Oxygen consumption Panama Physiology Plant leaf Tree Tropic climate Acclimatization Carbon cycle Forests Hot temperature Oxygen consumption Panama Plant leaves Trees Tropical climate Carbon flux Climate change Dgvm Experimental leaf warming Global warming Npp Panama Respiration Tropical forest biological Models Climate warming is expected to increase respiration rates of tropical forest trees and lianas, which may negatively affect the carbon balance of tropical forests. Thermal acclimation could mitigate the expected respiration increase, but the thermal acclimation potential of tropical forests remains largely unknown. In a tropical forest in Panama, we experimentally increased nighttime temperatures of upper canopy leaves of three tree and two liana species by on average 3 °C for 1 week, and quantified temperature responses of leaf dark respiration. Respiration at 25 °C (R25) decreased with increasing leaf temperature, but acclimation did not result in perfect homeostasis of respiration across temperatures. In contrast, Q10 of treatment and control leaves exhibited similarly high values (range 2.5-3.0) without evidence of acclimation. The decrease in R25 was not caused by respiratory substrate depletion, as warming did not reduce leaf carbohydrate concentration. To evaluate the wider implications of our experimental results, we simulated the carbon cycle of tropical latitudes (24°S-24°N) from 2000 to 2100 using a dynamic global vegetation model (LM3VN) modified to account for acclimation. Acclimation reduced the degree to which respiration increases with climate warming in the model relative to a no-acclimation scenario, leading to 21% greater increase in net primary productivity and 18% greater increase in biomass carbon storage over the 21st century. We conclude that leaf respiration of tropical forest plants can acclimate to nighttime warming, thereby reducing the magnitude of the positive feedback between climate change and the carbon cycle. © 2014 John Wiley and amp; Sons Ltd. 2014 2020-05-26T00:09:23Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 13652486 13541013 https://repository.urosario.edu.co/handle/10336/24157 https://doi.org/10.1111/gcb.12563 eng info:eu-repo/semantics/openAccess application/pdf Blackwell Publishing Ltd instname:Universidad del Rosario |
institution |
EdocUR - Universidad del Rosario |
collection |
DSpace |
language |
Inglés (English) |
topic |
Acclimation Carbon balance Carbon cycle Carbon flux Climate effect Forest canopy Global warming Leaf Primary production Respiration Temperature effect Tropical forest Panama [central america] Acclimatization Biological model Carbon cycle Forest Heat Oxygen consumption Panama Physiology Plant leaf Tree Tropic climate Acclimatization Carbon cycle Forests Hot temperature Oxygen consumption Panama Plant leaves Trees Tropical climate Carbon flux Climate change Dgvm Experimental leaf warming Global warming Npp Panama Respiration Tropical forest biological Models |
spellingShingle |
Acclimation Carbon balance Carbon cycle Carbon flux Climate effect Forest canopy Global warming Leaf Primary production Respiration Temperature effect Tropical forest Panama [central america] Acclimatization Biological model Carbon cycle Forest Heat Oxygen consumption Panama Physiology Plant leaf Tree Tropic climate Acclimatization Carbon cycle Forests Hot temperature Oxygen consumption Panama Plant leaves Trees Tropical climate Carbon flux Climate change Dgvm Experimental leaf warming Global warming Npp Panama Respiration Tropical forest biological Models Slot, Martijn Rey?Sánchez, Camilo Gerber, Stefan Lichstein, Jeremy W. Winter, Klaus Kitajima, Kaoru Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
description |
Climate warming is expected to increase respiration rates of tropical forest trees and lianas, which may negatively affect the carbon balance of tropical forests. Thermal acclimation could mitigate the expected respiration increase, but the thermal acclimation potential of tropical forests remains largely unknown. In a tropical forest in Panama, we experimentally increased nighttime temperatures of upper canopy leaves of three tree and two liana species by on average 3 °C for 1 week, and quantified temperature responses of leaf dark respiration. Respiration at 25 °C (R25) decreased with increasing leaf temperature, but acclimation did not result in perfect homeostasis of respiration across temperatures. In contrast, Q10 of treatment and control leaves exhibited similarly high values (range 2.5-3.0) without evidence of acclimation. The decrease in R25 was not caused by respiratory substrate depletion, as warming did not reduce leaf carbohydrate concentration. To evaluate the wider implications of our experimental results, we simulated the carbon cycle of tropical latitudes (24°S-24°N) from 2000 to 2100 using a dynamic global vegetation model (LM3VN) modified to account for acclimation. Acclimation reduced the degree to which respiration increases with climate warming in the model relative to a no-acclimation scenario, leading to 21% greater increase in net primary productivity and 18% greater increase in biomass carbon storage over the 21st century. We conclude that leaf respiration of tropical forest plants can acclimate to nighttime warming, thereby reducing the magnitude of the positive feedback between climate change and the carbon cycle. © 2014 John Wiley and amp; Sons Ltd. |
format |
Artículo (Article) |
author |
Slot, Martijn Rey?Sánchez, Camilo Gerber, Stefan Lichstein, Jeremy W. Winter, Klaus Kitajima, Kaoru |
author_facet |
Slot, Martijn Rey?Sánchez, Camilo Gerber, Stefan Lichstein, Jeremy W. Winter, Klaus Kitajima, Kaoru |
author_sort |
Slot, Martijn |
title |
Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
title_short |
Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
title_full |
Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
title_fullStr |
Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
title_full_unstemmed |
Thermal acclimation of leaf respiration of tropical trees and lianas: Response to experimental canopy warming, and consequences for tropical forest carbon balance |
title_sort |
thermal acclimation of leaf respiration of tropical trees and lianas: response to experimental canopy warming, and consequences for tropical forest carbon balance |
publisher |
Blackwell Publishing Ltd |
publishDate |
2014 |
url |
https://repository.urosario.edu.co/handle/10336/24157 https://doi.org/10.1111/gcb.12563 |
_version_ |
1740172235840159744 |
score |
12,131701 |