Photosynthetic acclimation to elevated atmospheric carbon dioxide and UV irradiation in Pinus banksiana [partitioning]

adaptation carbon dioxide crecimiento croissance dioxyde de carbone disponibilidad de nutrientes estoma estres growth nutrient availability photosynthese photosynthesis pinus banksiana plantule rayonnement ultraviolet ribulose-bisphosphate carboxylase seedlings stomata stomate stress ultraviolet radiation