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Responses of tree species to heat waves and extreme heat events

(2015) PLANT CELL AND ENVIRONMENT. 38(9). p.1699-1712
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Abstract
The number and intensity of heat waves has increased, and this trend is likely to continue throughout the 21st century. Often, heat waves are accompanied by drought conditions. It is projected that the global land area experiencing heat waves will double by 2020, and quadruple by 2040. Extreme heat events can impact a wide variety of tree functions.At the leaf level, photosynthesis is reduced, photooxidative stress increases, leaves abscise and the growth rate of remaining leaves decreases. In some species, stomatal conductance increases at high temperatures,whichmay be a mechanism for leaf cooling.At the whole plant level, heat stress can decrease growth and shift biomass allocation. When drought stress accompanies heat waves, the negative effects of heat stress are exacerbated and can lead to tree mortality. However, some species exhibit remarkable tolerance to thermal stress. Responses include changes that minimize stress on photosynthesis and reductions in dark respiration.Although there have been few studies to date, there is evidence of within-species genetic variation in thermal tolerance, which could be important to exploit in production forestry systems. Understanding the mechanisms of differing tree responses to extreme temperature events may be critically important for understanding how tree species will be affected by climate change.
Keywords
photosynthesis, respiration, heat stress, growth, drought, genotype, stomatal conductance, HIGH-TEMPERATURE STRESS, RAIN-FOREST TREES, CLIMATE-CHANGE, ELEVATED CO2, RIBULOSE-1, 5-BISPHOSPHATE CARBOXYLASE/OXYGENASE, RUBISCO ACTIVASE, WATER RELATIONS, BLACK SPRUCE, PHOTOSYNTHETIC APPARATUS, PSEUDOTSUGA-MENZIESII

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Chicago
Teskey, Robert, Timothy Wertin, Ingvar Bauweraerts, Maarten Ameye, Mary Anne McGuire, and Kathy Steppe. 2015. “Responses of Tree Species to Heat Waves and Extreme Heat Events.” Plant Cell and Environment 38 (9): 1699–1712.
APA
Teskey, R., Wertin, T., Bauweraerts, I., Ameye, M., McGuire, M. A., & Steppe, K. (2015). Responses of tree species to heat waves and extreme heat events. PLANT CELL AND ENVIRONMENT, 38(9), 1699–1712.
Vancouver
1.
Teskey R, Wertin T, Bauweraerts I, Ameye M, McGuire MA, Steppe K. Responses of tree species to heat waves and extreme heat events. PLANT CELL AND ENVIRONMENT. 2015;38(9):1699–712.
MLA
Teskey, Robert, Timothy Wertin, Ingvar Bauweraerts, et al. “Responses of Tree Species to Heat Waves and Extreme Heat Events.” PLANT CELL AND ENVIRONMENT 38.9 (2015): 1699–1712. Print.
@article{5816287,
  abstract     = {The number and intensity of heat waves has increased, and this trend is likely to continue throughout the 21st century. Often, heat waves are accompanied by drought conditions. It is projected that the global land area experiencing heat waves will double by 2020, and quadruple by 2040. Extreme heat events can impact a wide variety of tree functions.At the leaf level, photosynthesis is reduced, photooxidative stress increases, leaves abscise and the growth rate of remaining leaves decreases. In some species, stomatal conductance increases at high temperatures,whichmay be a mechanism for leaf cooling.At the whole plant level, heat stress can decrease growth and shift biomass allocation. When drought stress accompanies heat waves, the negative effects of heat stress are exacerbated and can lead to tree mortality. However, some species exhibit remarkable tolerance to thermal stress. Responses include changes that minimize stress on photosynthesis and reductions in dark respiration.Although there have been few studies to date, there is evidence of within-species genetic variation in thermal tolerance, which could be important to exploit in production forestry systems. Understanding the mechanisms of differing tree responses to extreme temperature events may be critically important for understanding how tree species will be affected by climate change.},
  author       = {Teskey, Robert and Wertin, Timothy and Bauweraerts, Ingvar and Ameye, Maarten and McGuire, Mary Anne and Steppe, Kathy},
  issn         = {0140-7791},
  journal      = {PLANT CELL AND ENVIRONMENT},
  keywords     = {photosynthesis,respiration,heat stress,growth,drought,genotype,stomatal conductance,HIGH-TEMPERATURE STRESS,RAIN-FOREST TREES,CLIMATE-CHANGE,ELEVATED CO2,RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE/OXYGENASE,RUBISCO ACTIVASE,WATER RELATIONS,BLACK SPRUCE,PHOTOSYNTHETIC APPARATUS,PSEUDOTSUGA-MENZIESII},
  language     = {eng},
  number       = {9},
  pages        = {1699--1712},
  title        = {Responses of tree species to heat waves and extreme heat events},
  url          = {http://dx.doi.org/10.1111/pce.12417},
  volume       = {38},
  year         = {2015},
}

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