'conservation campaign' is a correct and usable phrase in written English.
It refers to a focused effort or movement to protect the natural environment and preserve natural resources. Example: The local government launched a conservation campaign to educate citizens about the importance of reducing plastic waste and implementing sustainable practices in their daily lives.
Fast-forward a century and red kites are common again, following an effective conservation campaign.
Elizabeth Wilson, who leads the Pew Environment Group's global shark conservation campaign, described the whale shark measures as a victory.
All the while the easily spottable Lammergeier vultures - now relatively abundant after a successful conservation campaign - circle overhead.
It is said to be the largest amount of money ever devoted to a conservation campaign by a private organization.
This is a spectacular victory for a conservation campaign for the sort of building that conservationists used to oppose bitterly.
To safeguard its supply, the city has an aggressive conservation campaign that includes rebates for residents who harvest rainwater or use water reclaimed from bathroom faucets for landscaping.
He filed away his voluminous correspondence about habitat conservation campaigns, adding marginal remarks full of capitalizations, underlining and exclamation points.
The survival of the tiger has been the subject of countless conservation campaigns, public appeals and militarised anti-poaching activities.
The charismatic species often used in conservation campaigning – whales, sea lions, turtles and sea birds – account for less than 2% of the species in the world's oceans.
"We already know that the global favourites are big cats, and that knowledge can mobilise conservation campaigns – so let's find out which UK mammal people most want to champion".
But in some cases his righteous accusations -- against the "feel-good" brand of conservation campaigns marketed by certain international conservation organizations, against strategic compromises sometimes made by them, and against the magazines that have declined to publish his grisly photos -- sound like little more than suspicion, disgruntlement and innuendo.
