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Title: Implications of improved representations of plant respiration in a changing climate

Journal Article · · Nature Communications
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5];  [2];  [2];  [6];  [7];  [7];  [7];  [8];  [9]; ORCiD logo [10];  [11];  [5];  [12];  [13]
  1. Centre for Ecology and Hydrology, Wallingford, Oxfordshire (United Kingdom)
  2. Australian National Univ., Canberra, (Australia)
  3. Centre for Ecology and Hydrology, Wallingford, Oxfordshire (United Kingdom); Univ. of Exeter, Exeter (United Kingdom)
  4. Ecosystems Center, Woods Hole, MA (United States)
  5. Univ. of Exeter, Exeter (United Kingdom)
  6. Univ. of Minnesota, Minneapolis, MN (United States); Western Sydney Univ., Penrith (Australia)
  7. Univ. of Minnesota, Minneapolis, MN (United States)
  8. Columbia Univ., New York, NY (United States)
  9. Australian National Univ., Canberra, (Australia); Univ. of Edinburgh, Scotland (United Kingdom)
  10. Western Sydney Univ., Penrith (Australia)
  11. Univ. of Canterbury, Christchurch (New Zealand)
  12. Met Office, Exeter, Devon (United Kingdom)
  13. Univ. of Oxford, Oxford (United Kingdom)

Land-atmosphere exchanges influence atmospheric CO2. Emphasis has been on describing photosynthetic CO2 uptake, but less on respiration losses. New global datasets describe upper canopy dark respiration (Rd) and temperature dependencies. This allows characterization of baseline Rd, instantaneous temperature responses and longer-term thermal acclimation effects. Here we show the global implications of these parameterisations with a global gridded land model. This model aggregates Rd to whole-plant respiration Rp, driven with meteorological forcings spanning uncertainty across climate change models. For preindustrial estimates, new baseline Rd increases Rp and especially in the tropics. Compared to new baseline, revised instantaneous response decreases Rp for mid-latitudes, while acclimation lowers this for the tropics with increases elsewhere. Under global warming, new Rd estimates amplify modelled respiration increases, although partially lowered by acclimation. Future measurements will refine how Rd aggregates to whole-plant respiration. With this being said, our analysis suggests Rp could be around 30% higher than existing estimates.

Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
FG02-07ER64456
OSTI ID:
1499641
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 71 works
Citation information provided by
Web of Science

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Cited By (21)

The role of thermal acclimation of plant respiration under climate warming: Putting the brakes on a runaway train?: Thermal acclimation of fine root respiration journal January 2018
Can leaf net photosynthesis acclimate to rising and more variable temperatures? journal February 2019
Coupling between the terrestrial carbon and water cycles-a review text January 2019
Coupling between the terrestrial carbon and water cycles—a review journal July 2019
The Possible Role of Non-Structural Carbohydrates in the Regulation of Tree Hydraulics journal December 2019
Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – definitions, theories, and empirical evidence journal January 2018
Trehalose‐6‐phosphate signaling regulates thermoresponsive hypocotyl growth in Arabidopsis thaliana journal August 2019
Widespread inhibition of daytime ecosystem respiration journal February 2019
Elevated CO 2 does not affect stem CO 2 efflux nor stem respiration in a dry Eucalyptus woodland, but it shifts the vertical gradient in xylem [CO 2 ] journal April 2019
Clues for our missing respiration model journal February 2019
Small flux, global impact: Integrating the nuances of leaf mitochondrial respiration in estimates of ecosystem carbon exchange journal May 2018
Respiration in wood: integrating across tissues, functions and scales journal October 2019
Short-term effects of drought on tropical forest do not fully predict impacts of repeated or long-term drought: gas exchange versus growth journal October 2018
A continental‐scale assessment of variability in leaf traits: Within species, across sites and between seasons journal April 2018
Plant respiration: Controlled by photosynthesis or biomass? journal October 2019
Drivers of leaf carbon exchange capacity across biomes at the continental scale journal June 2018
Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species journal June 2018
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Core principles which explain variation in respiration across biological scales journal December 2018
Short-term thermal acclimation of dark respiration is greater in non-photosynthetic than in photosynthetic tissues journal October 2019
Environmental controls on light inhibition of respiration and leaf and canopy daytime carbon exchange in a temperate deciduous forest journal September 2018

Figures / Tables (8)


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