In NZ, there's been successful local endeavours to, for example, plant nectar bearing trees in urban backyards to encourage endemic birds to return, another I know of to bring biodiversity into monoculture vineyard areas to keep the bees healthy, and they've worked because people benefit from them - our nectar feeding birds are also beautiful singers, and the song of the korimako/bellbird and tui are cherished, and the vineyard owners themselves benefit from healthier pollinators.

It's where there's no direct benefit, or the species is uncharismaric that it gets tricky. It's a lot harder to motivate people to preserve habitat for a stick insect or mudfish.