A Multi-Scale Program to Assess Change in the Acid-Base Chemistry

The specific objective is to determine temporal trends and status changes in the acid-base chemistry of streams in the region that support reproducing populations of the indigenous brook trout. This work will be accomplished by:

This work will be accomplished by:

• Continuing the 19-year chemistry record for 66 western Virginia streams representing six geologically defined subpopulations of the larger biologically defined population of streams included in the 1987 VTSSS survey.

• Maintenance of intensive data collection in Shenandoah National Park, including long-term weekly and episodic sampling of streams representing geologically defined stream populations.

• Conducting analysis of monotonic trends and status changes in the acid-base chemistry of individual sampled streams and the defined populations of streams.