摘要：We compared seven small (2-6 km 2 ) upland watersheds located in two land-use categories (logged and unlogged) in the Adirondack Park (New York). Watersheds were considered logged if the lands were managed for timber harvesting, while unlogged watersheds have not been logged for at least 85 years. Riparian litter species composition and biomass were estimated for each stream. In-stream leaves were also sampled to assess invertebrate community assemblages and leaf species composition. Leaf material in logged catchments was composed mainly of litter that decomposes more quickly and is thus of higher quality to the invertebrate consumer (i.e., Acer spp., Populus tremuloides and Fraxinus americana). Leaves in unlogged catchments contained a higher abundance of invertebrates and detritivorous insects throughout the year. The results suggest that alterations to the invertebrate community related to land-use may result in differing energy processing rates in logged Adirondack watersheds.
