Response of Arnica dealbata to climate change, nitrogen deposition, and fire
- 161 Downloads
Predicted changes in climate and increasing nitrogen deposition are likely to have significant impacts on species that have limited distributions or are already experiencing diminished population size. Arnica dealbata (A. Gray, Asteraceae), a listed sensitive species in Yosemite National Park, is endemic to California and has limited distribution within the park boundaries. The objective of this research was to examine the effects of altered precipitation resulting from climate change, increasing nitrogen deposition resulting from pollution, and prescribed fire on A. dealbata. A. dealbata cover significantly increased with increasing snowpack and prescribed fire. Increasing nitrogen deposition negatively affected cover. Our results suggest Yosemite’s A. dealbata populations can thrive even under a changing climate if prescribed fire is frequently applied coupled with increased moisture availability.
KeywordsClimate change Mixed-conifer Sierra Nevada
- Brown JK, Smith JK (eds) (2000) Wildland fire in ecosystems: effects of fire on flora, vol 2. USDA Forest Service, RMRS-GTR-42, p 257Google Scholar
- Field CB, Daily GC, Davis FW, Gaines S, Matson PA, Melack J et al (1999) Confronting climate change in California: ecological impacts on the Golden State. Union of Concerned Scientists, Cambridge, MA and Ecological Society of America, Washington, DCGoogle Scholar
- Hickman JC (ed) (1993) The Jepson manual higher plants of California. University of California Press, BerkeleyGoogle Scholar