1. ecology the area in which a plant naturally lives and reproduces 2. ecology the known geographical distribution of a plant or animal during a defined time 3. wildlife, range management the area in which an animal seeks food and water 4. biometrics an elementary measure of the dispersion of a set of random variables, equal to the largest minus the smallest 5. range management any land supporting vegetation suitable for grazing, including rangeland, grazable woodland and shrubland —note range is not a use —see habitat, pasture, grassland, herbland, year-long range 6. range management modifies resources, products, activities, practices, and phenomena pertaining to rangeland This definition last updated 08/11/2008