Arctic tundra dominated by tussock cotton-grass (Eriophorum vaginatum) with reddish peat moss (Sphagnum rubellum) peat patches on a hillslope at Imnavait Creek (Toolik LTER)on the North Slope, Alaska.

SEVERAL investigations1–4 have indicated the importance of mineral nutrients in determining the characteristic flora and vegetation structure of the various types of bog and fen. These and other ...