Forester (noun)

1. A person who is responsible for the management and preservation of forests, including planting and caring for trees, monitoring wildlife and protecting the ecosystem.
2. An expert in forestry who manages and conserves forested lands and resources.

Origin:

From forest + -er, meaning "one who manages forests.".

Examples:

1. The forester was tasked with creating a sustainable forestry plan that would conserve the forest and its wildlife.
2. The forester was a respected expert in her field, known for her knowledge of the local forests and her commitment to their preservation.
3. The forester was passionate about the environment, and worked tirelessly to educate others about the importance of preserving forests.
4. The forester was responsible for managing the forest's resources, including timber, water and wildlife.
5. The forester was always on the lookout for signs of damage to the forest, and worked quickly to address any threats to its health.