Seasonal changes in the photosynthetic capacity and chlorophyll fluorescence in canopy leaves of Quercus crispula in a cool-temperate forest

Katsuto Tsujimoto, Tohoku University, Sapporo, Japan, Tomomichi Kato, Hokkaido University, Research Faculty of Agriculture, Sapporo, Japan and Tatsuro Nakaji, Hokkaido University, Tomakomai Experimental Forest, Field Science Center for Northern Biosphere, Sapporo, Japan; Hokkaido University, Field Science Center for Northern Biosphere, Sapporo, Japan