Tundra, Chapter 5

Abstract

The North American Arctic, comprising the Tundra and Arctic Cordillera ecoregions (CEC 1997, Chapter 2), covers more than 3 million km² (300 million ha), and accounts for nearly 14 percent of the North American land mass. The North American Arctic also constitutes about 20 percent of the much larger circumpolar Arctic shared by Canada, the United States, and six European and Asian countries.

Parent Publication

• Assessment of Nitrogen deposition effects and empirical critical loads of Nitrogen for ecoregions of the United States

Citation

Nadelhoffer, K.; Geiser, L.H. 2011. Tundra, Chapter 5. In: Pardo, L.H.; Robin-Abbott, M.J.; Driscoll, C.T., eds. 2011. Assessment of Nitrogen deposition effects and empirical critical loads of Nitrogen for ecoregions of the United States. Gen. Tech. Rep. NRS-80. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 37-47.