|Description only||Basal Area Increment and Foliar Chemistry||Tree level data including:
species, Basal Area Increment [as per: Long, R. P., Horsley, S. B., Hallett, R. A., & Bailey, S. W. (2009). Sugar maple growth in relation to nutrition and stress in the northeastern United States. Ecological Applications, 19(6), 1454–1466.] and foliar concentration of Al, Ca, Fe, K, Mg, Mn, P, and N.
||Determining impacts of air pollution on tree health. ||2003-01-01 (ongoing)|
|Description only||Metadata||Defines variables and codes used in dataset||Defining variables and codes used in dataset||2003-01-01 (ongoing)|
|Description only||Plot ID and Location||Plot ID codes and lat/long coordinates of plot locations||Identifying PLOT ID codes and coordinates of plot locations. ||2003-01-01 (ongoing)|
|Description only||Tree health||Tree-level data including species, DBH, crown class, vigor, dieback, and defoliation. For description of variables, see: Hallett, R. A., Bailey, S. W., Horsley, S. B., & Robert, P. (2006). Influence of nutrition and stress on sugar maple at a regional scale. Canadian Journal of Forest Research, 36, 2235–2246.
||Physical tree measurements to track trends in growth and health over time. ||2003-01-01 (ongoing)|