---
res:
  bibo_abstract:
  - "Elevated atmospheric CO2 concentration is expected\r\nto increase leaf CO2 assimilation
    rates, thus promoting plant growth\r\nand increasing leaf area. It also decreases
    stomatal conductance, allowing\r\nwater savings, which have been hypothesized
    to drive large-scale greening,\r\nin particular in arid and semiarid climates.
    However, the increase in leaf\r\narea could reduce the benefits of elevated CO2
    concentration through soil\r\nwater depletion. The net effect of elevated CO2
    on leaf- and\r\ncanopy-level gas exchange remains uncertain. To address this question,
    we\r\ncompare the outcomes of a heuristic model based on the Partitioning of\r\nEquilibrium
    Transpiration and Assimilation (PETA) hypothesis and three model\r\nvariants based
    on stomatal optimization theory. Predicted relative changes in leaf-\r\nand canopy-level
    gas exchange rates are used as a metric of plant responses\r\nto changes in atmospheric
    CO2 concentration. Both model approaches predict\r\nreductions in leaf-level transpiration
    rate due to decreased stomatal\r\nconductance under elevated CO2, but negligible
    (PETA) or no\r\n(optimization) changes in canopy-level transpiration due to the
    compensatory\r\neffect of increased leaf area. Leaf- and canopy-level CO2 assimilation\r\nis
    predicted to increase, with an amplification of the CO2\r\nfertilization effect
    at the canopy level due to the enhanced leaf area. The\r\nexpected increase in
    vapour pressure deficit (VPD) under warmer conditions is\r\ngenerally predicted
    to decrease the sensitivity of gas exchange to\r\natmospheric CO2 concentration
    in both models. The consistent\r\npredictions by different models that canopy-level
    transpiration varies\r\nlittle under elevated CO2 due to combined stomatal conductance\r\nreduction
    and leaf area increase highlight the coordination of\r\nphysiological and morphological
    characteristics in vegetation to maximize\r\nresource use (here water) under altered
    climatic conditions.@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Stefano
      foaf_name: Manzoni, Stefano
      foaf_surname: Manzoni
  - foaf_Person:
      foaf_givenName: Simone
      foaf_name: Fatichi, Simone
      foaf_surname: Fatichi
      foaf_workInfoHomepage: http://www.librecat.org/personId=cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6
  - foaf_Person:
      foaf_givenName: Xue
      foaf_name: Feng, Xue
      foaf_surname: Feng
  - foaf_Person:
      foaf_givenName: Gabriel G.
      foaf_name: Katul, Gabriel G.
      foaf_surname: Katul
  - foaf_Person:
      foaf_givenName: Danielle
      foaf_name: Way, Danielle
      foaf_surname: Way
  - foaf_Person:
      foaf_givenName: Giulia
      foaf_name: Vico, Giulia
      foaf_surname: Vico
  bibo_doi: 10.5194/bg-19-4387-2022
  bibo_issue: '17'
  bibo_volume: 19
  dct_date: 2022^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/1726-4189
  dct_language: eng
  dct_publisher: Copernicus Publications@
  dct_title: Consistent responses of vegetation gas exchange to elevated atmospheric
    CO2 emerge from heuristic and optimization models@
...