Distribution of nitrogen-15 tracers applied to the canopy of a mature spruce-hemlock stand, Howland, Maine, USA.Published in:Oecologia, 2009, v. 160, n. 3, p. 589, doi. 10.1007/s00442-009-1325-xBy:Dail, David Bryan;Hollinger, David Y.;Davidson, Eric A.;Fernandez, Ivan;Sievering, Herman C.;Scott, Neal A.;Gaige, ElizabethPublication type:Article