Actually, shortrod, if you look at history, you're wrong. The roots of conservationism, if you go back to Teddy Roosevelt and all that, very much include, as a prerequisite, public use of the resources. The origins were in the national park system, which goes out of its way to invite the public to enjoy the resource. That was its purpose. And it remains the purpose of public conservation efforts. It's front and center in the mission statements of those who manage state and national forests, parks, recreation areas, conservancies, etc.
From a public policy perspective, we are concerned with Conservation of PUBLIC RESOURCES.
Now, on private land, the landowner may be concerned with conservation of his own resources. But as a member of the public, if I am excluded from that resource, I hardly see how his decisions effect me. Unless, as stated, his decisions are affecting our resources elsewhere.
If you're more concerned about the welfare of the flora and fauna, outside of man's enjoyment of them, then it is you who need a new word. There is a word for it. Environmentalism. Which is different than conservation.
Personally, I'm much more of a conservationist than I am an environmentalist, though there is a place for both, and sometimes their goals overlap.