Dryad
Published May 31, 2022 | Version v1
Software Open

Cross-biome synthesis of source versus sink limits to tree growth

Creators

  • 1. University of Utah
  • 2. University of Arizona
  • 3. University of California, Berkeley
  • 4. University of Paris-Saclay
  • 5. University of Bologna
  • 6. Indiana University
  • 7. McMaster University
  • 8. University of Quebec at Montreal
  • 9. University of Notre Dame
  • 10. National Autonomous University of Mexico
  • 11. Osaka Prefecture University
  • 12. Montana State University
  • 13. Université Catholique de Louvain
  • 14. Polish Academy of Sciences
  • 15. Pacific Northwest Research Station
  • 16. Michigan Technological University

Description

Uncertainties surrounding tree carbon allocation to growth are a major limitation to projections of forest carbon sequestration and response to climate change. The prevalence and extent to which carbon assimilation (source) or cambial activity (sink) mediate wood production are fundamentally important and remain elusive. We quantified source-sink relations across biomes by combining eddy-covariance gross primary production with extensive on-site and regional tree ring observations. We found widespread temporal decoupling between carbon assimilation and tree growth, underpinned by contrasting climatic sensitivities of these two processes. Substantial differences in assimilation-growth decoupling between angiosperms and gymnosperms were determined, as well as stronger decoupling with canopy closure, aridity, and decreasing temperatures. Our results reveal pervasive sink control over tree growth that is likely to be increasingly prominent under global climate change.

Notes

Funding provided by: National Institute of Food and Agriculture
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100005825
Award Number: 2018-67019-27850

Funding provided by: David and Lucille Packard Foundation and US National Science Foundation*
Crossref Funder Registry ID:
Award Number: 1714972

Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 1753845

Funding provided by: U.S. Forest Service
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100006959
Award Number: 19-05

Funding provided by: U.S. Department of Energy
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000015
Award Number: DE-SC0022052

Funding provided by: Arctic Challenge for Sustainability II*
Crossref Funder Registry ID:
Award Number: JPMXD1420318865

Funding provided by: National Institute of Food and Agriculture
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100005825
Award Number: 2017‐67013‐26191

Funding provided by: U.S. Department of Energy
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000015
Award Number: AmeriFlux

Funding provided by: U.S. Department of Energy
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000015
Award Number: DE-SC0010611

Funding provided by: NSF Directorate for Biological Sciences*
Crossref Funder Registry ID:
Award Number: 1241851

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Additional details

Related works

Is cited by
10.1126/science.abm4875 (DOI)
Is source of
10.5061/dryad.15dv41nzt (DOI)