List of National Park Service Units with "Very High" Ecosystem Sensitivity Ranking for Acidification or Nutrient Enrichment Impacts

Park nitrogen or sulfur deposition condition may be adjusted based on results from national assessment reports that identified ecosystems and resources at risk to acidification and excess nitrogen enrichment in national parks. These reports provide a relative risk assessment of acidification and nutrient enrichment impacts from atmospheric nitrogen and sulfur deposition for parks with identified natural resources in 32 inventory & monitoring networks. If park ecosystems are ranked Very High in sensitivity to acidification or nutrient enrichment effects from atmospheric deposition relative to all inventory & monitoring parks, the condition category is adjusted to the next most conservative condition category. This adjustment does not apply to parks that already have a Poor condition based on wet deposition levels. This table provides a list of NPS units with "“very high” ecosystem sensitivity ranking for acidification or nutrient enrichment impacts. Acidification sensitivity ranks are from: Sullivan, T. J., McPherson, G.T., McDonnell, T. C., Mackey, S. D., Moore, D. 2011a. Evaluation of the Sensitivity of Inventory and Monitoring National Parks to Acidification Effects from Atmospheric Sulfur and Nitrogen Deposition: Main Report. Natural Resource Report NPS/NRPC/ARD/NRR—2011/349. National Park Service, Denver, Colorado. Available at http://www.nature.nps.gov/air/permits/aris/networks/acidification-eval.cfm. Nutrient enrichment ranks are from: Sullivan, T. J., T. C. McDonnell, G. T. McPherson, S. D. Mackey, and D. Moore. 2011b. Evaluation of the Sensitivity of Inventory and Monitoring National Parks to Nutrient Enrichment Effects from Atmospheric Nitrogen Deposition: Main Report. Natural Resource Report NPS/NRPC/ARD/NRR—2011/313. National Park Service, Denver, Colorado. Available at http://www.nature.nps.gov/air/permits/aris/networks/nsensitivity.cfm.