The downhill movement of a mass of soil or rock, usually wet or saturated, that results in episodic erosion. Natural watercourses, topography , hydrology , and vegetation that comprise a particular site. See Exotic Plant . The portion of a plant community that forms the upper-most crown cover or canopy. Groundwater that accumulates over an impervious soil layer from rainfall or other sources that finds release on bluff faces .
Perched water is released on bluff faces as seeps or springs.
Plants that colonize disturbed sites after land clearing, logging, fire, or landslides . They are normally replaced over time by other species. Alder, willow, and fireweed are common examples. The process by which an area is restocked with plants. Young trees, either naturally seeded or planted.