A Active restoration Restoring natural habitats by active measures such as hand-planting trees and shrubs in riparian corridors or removing exotic plants and animals from a native landscape or waterway. See natural process restoration .
Plant cover is usually low with wide spacing between shrubs and minimally developed understory.
Anadromous Adjective describing migratory fish that spend most of their lives in the sea, but then migrate to fresh water to spawn. Aquatic habitat Water habitat, as in creeks, rivers, sloughs , wetlands, seas, and oceans. At-risk species Species that are endangered , threatened , or species of concern . The full array of life on earth. Bio-monitoring Observing and recording data concerning biological species.