From Longman Dictionary of Contemporary Englishconservancycon‧ser‧van‧cy /kənˈsɜːvənsi $ -ɜːr-/ noun formal 1 SGE[singular] a group of officials who control and protect an area of land, a river etc the Thames Conservancy2 SGE[uncountable] the protection of natural things such as animals, plants, forests etc SYN conservation
Examples from the Corpus
conservancy• the Santa Monica Mountains Conservancy• There are various power conservancy options like three levels of screen brightness, and variable times for screen and disk power-down. 