Authors
Michael J Aspinwall, John E Drake, Courtney Campany, Angelica Vårhammar, Oula Ghannoum, David T Tissue, Peter B Reich, Mark G Tjoelker
Publication date
2016/10
Journal
New Phytologist
Volume
212
Issue
2
Pages
354-367
Description
- Understanding physiological acclimation of photosynthesis and respiration is important in elucidating the metabolic performance of trees in a changing climate. Does physiological acclimation to climate warming mirror acclimation to seasonal temperature changes?
- We grew Eucalyptus tereticornis trees in the field for 14 months inside 9‐m tall whole‐tree chambers tracking ambient air temperature (Tair) or ambient Tair + 3°C (i.e. ‘warmed’). We measured light‐ and CO2‐saturated net photosynthesis (Amax) and night‐time dark respiration (R) each month at 25°C to quantify acclimation. Tree growth was measured, and leaf nitrogen (N) and total nonstructural carbohydrate (TNC) concentrations were determined to investigate mechanisms of acclimation.
- Warming reduced Amax and R measured at 25°C compared to ambient‐grown trees. Both traits also declined as mean daily Tair increased, and did so in a …
Scholar articles
MJ Aspinwall, JE Drake, C Campany, A Vårhammar… - New Phytologist, 2016