Filters: Tags: critical loads (X)14 results (93ms)
Macroinvertebrate status in relation to critical loads for freshwaters: A case study from N.E. Scotland
Relationship between salmonid fish densities and critical ANC at exceeded and non-exceeded stream sites in Scotland
Data used for assessing relationships between fish assemblages and acid-base chemistry in streams of the Great Smoky Mountains National Park, 1993-2014
Fish community richness, density, and biomass for entire communities, Brook Trout, Rainbow Trout, and minnows, including site characteristics, and water chemistry (acid neutralizing capacity, pH, nitrate, sulfate, ammonia, calcium, and total aluminum) collected at least once and as many as 13 times at each of 52 stream sites during the same years that fish were inventoried, Great Smoky Mountains National Park, 1993-2014.
We suggest an empirical approach for determining critical loads for inorganic nitrogen (N) deposition in wetfall to the central Rocky Mountains (USA). We define "critical loads" as a deposition amount above which natural resources can be negatively affected. The arithmetic average from 1992 to 1996 of annual inorganic N deposition in wetfall at the eight National Acid-Deposition Program (NADP) sites located at elevations >2500 m in the central Rocky Mountains ranged from 2.5 to 3.5 kg�ha-1�yr-1. In contrast, inorganic N deposition was <2.5 kg�ha-1�yr-1 at all 23 NADP sites below 2500 m in elevation. At the Niwot Ridge NADP site in the Colorado Front Range, a simple linear regression of inorganic N in wetfall with...