conservancy
From Longman Dictionary of Contemporary EnglishRelated topics: Environment & wasteconservancycon‧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 conservationExamples from the Corpusconservancy• 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.