As an early conservationist, he prosecuted land thieves and attracted public attention to the necessity of forest preservation.
The forest survived through the efforts of early Australian conservationists.
The Leslie-Melvilles were among the earliest conservationists to raise a wild giraffe.
An early conservationist, he decried the hunting of animals for scientific collections.
Campbell was an early conservationist, concerned with maintaining the African wildlife.
He was an early conservationist who planted trees to replace those he felled.
Eventually, with the aid of a benevolent early conservationist, they achieved their objective.
My mother was also an early conservationist.
Originally specializing in zoology, he became a prominent early conservationist and student of Native American life.
Many people consider him an early conservationist or "tree-hugger".