Photosynthesis (Net CO2 Exchange Rate) References
Betula ermanii [Erman's Birch]
Hoshika, Y., Watanabe, M., Inada, N. and Koike, T. 2012. Growth and leaf gas exchange in three birch species exposed to elevated ozone and CO2 in summer. Water, Air and Soil Pollution 223: 5017-5025.