You can search for books using Summon. Remember to refine your search to Book / eBook and Book Chapter (and you can also limit by Publication Date).
Here are some useful search terms:
- biodiversity conservation
- community-based conservation
- community forestry
- conservation
- conservation biology
- conservation of natural resources
- ecology
- ecosystem management
- environmental policy
- human ecology
- natural resources management
- nature conservation
- sustainable development
- wildlife conservation