gas transport 142M471B3J 1 Carbon Dioxide 1 Fick's law 1 Journal Article 1 Letter 1 Research Support, U.S. Gov't, Non-P.H.S. 1 mehr ... cuticle 1 cuticular conductance 1 gas exchange systems 1 global carbon cycle 1 intercellular CO2 1 methane emissions 1 photosynthesis measurement devices 1 soil-plant-atmosphere interactions 1 tree stem CH4 fluxes 1 weniger ...