A general term usually encompassing endangered , threatened , and at-risk species as well as species of concern . Indigenous species Native species . Invertebrates Animals, such as insects and mollusks, that lack a backbone or spinal column. J K L Landscape-scale conservation Conservation of areas large enough to contain functioning ecosystems in which crucial natural processes take place. Processes like fire, flooding, and wildlife migration are all essential to the health, biological diversity, and long-term sustainability of an ecosystem.
Land stewardship See stewardship .
Levee A raised embankment confining a river. M Managed burn See Fire, prescribed . Monitoring Observing and recording data. The Nature Conservancy and its partners use biological monitoring programs to plan and to evaluate the success of conservation programs. N Native species Species that occur naturally in a given area.