- Murillo, Jose Alexander Elvir
University of Maine Graduate School
Effects of chronic nitrogen (N) additions on foliar chemistry, gas exchange and forest growth of tree species were investigated at the Bear Brook 'Watershed in Maine (BBWM). The BBWM is a paired-watershed forest ecosystem study with one watershed, 'West Bear, treated since 1989 with 26.6 kg N ha-1 yr-1 applied bimonthly as ammonium sulfate ((NH4)2SOa), while the other watershed, East Bear, serves as a reference. Tree species richness, forest structure, basal area, aboveground biomass and leaf area index were similar between watersheds.