the.com/conservationist

means Someone who works to protect natural resources, wildlife, and wild places from destruction or overuse.

from Built from 'conservation,' which traces back to Latin 'conservare' — 'to keep, preserve, guard' (from 'con-' meaning 'thoroughly' plus 'servare,' 'to keep watch over'). The word 'conservation' had been used for centuries to mean simply preserving anything, but it narrowed toward nature and resources especially as 19th-century movements arose around protecting forests, water, and wildlife from industrial exploitation. 'Conservationist' followed as the label for the person doing the guarding — a watcher-over by etymological descent, long before it meant someone with a clipboard and a strong opinion about your campfire.