Effects of elevated carbon dioxide and ozone on foliar chemical composition and dynamics in trembling aspen (Populus tremuloides) and paper birch (Betula papyrifera)

R.L. Lindroth
B.J. Kopper
W.F.J. Parsons
J.G. Bockheim
J. Sober
G.R. Hendrey
K.S. Pregitzer
J.G. Isebrands
D.F. Karnosky

Abstract