Hubbard Brook Experimental Forest Watershed 1 Temporal Canopy Leaf Chemistry, 1999 - 2002

Overstory foliage is collected in late summer from
calcium-treated forest on watershed 1. Nutrient
concentrations in foliage are measured. This allows us to
estimate the pool of nutrients in foliage in combination with
litterfall estimates of foliage biomass. We can compare
foliar chemistry in W1 with that in W6 to quantify calcium
treatment effects. Long-term measurements continue with the
aim of detecting trends in foliage chemistry over long time
scales. These data were gathered as part of the Hubbard Brook
Ecosystem Study (HBES). The HBES is a collaborative effort at
the Hubbard Brook Experimental Forest, which is operated and
maintained by the USDA Forest Service, Northern Research
Station.