Experiment Title: The acclimation of leaf level photosynthesis on CO2, with interacting effects of soil water availability and nutrient availability. Institutions responsible:

Utrecht University and University of Western Australia (J. Lankhorst, P. Drake)
Experiment Description:
Variables being tested: Experimental Details (factorial design, replication, lab/field/ controls, vegetation type): Data availability: Study limitations:
  • Whole plant carbon & nitrogen acquisition (roots, shoots, stems, dry weight & measured concentration)
  • Leaf level photosynthetic capacity (Vcmax, Jmax) and χ (δ13C).
  • Plant level transpiration
  • Leaf-morphological traits
 Full factorial design of 2 lvls N x 2 lvls water x 2 lvls CO2 in climate chambers

3 differing species; 2 trees (Acacia and Eucalypt) 1 grass (Rye)

12L pots to regulate soil water availability better.

 All data is available on request, only elemental analysis is to be done

CSV/xlsx files.

Not published yet

 Water availability was manipulated by taking 2 percentages (40 & 70) of the difference in pot weight between air-dry soil and field capacity soil. No retention curves or soil water potential measured.

Trees were grown for +- 2.5 months.

CO2 chambers were used with differing isotopic signature, making analyses on χ between CO2 treatments more difficult than within treatments.