142M471B3J 1 Carbon Dioxide 1 Comment 1 Journal Article 1 Oxygen Isotopes 1 Research Support, U.S. Gov't, Non-P.H.S. 1 canopy temperature 1 mehr ... carbon assimilation-weighted leaf temperature cellulosic 18O 1 homeostasis 1 homeothermy 1 poikilothermy 1 thermoregulation 1 weniger ...