Threatened needle-leaved evergreen forested freshwater wetland habitats

A bog or muskeg is a subclimax community in the taiga. It occurs in poorly drained, glacial depressions. Sphagnum moss forms a spongy mat over ponded water. Growing on this mat are species of the tundra such as cottongrass and shrubs of the heath family. Black spruce and larch ring the edge.