Translation of "Habitats" in Japanese

What happens when cities expand and wildlife habitats shrink?

都市が拡大し 野生生物の 生息域が減少すれば？

Wetland habitats serve essential functions in an ecosystem, including acting as water filters, providing flood and erosion control, and furnishing food and homes for fish and wildlife.

湿地帯は生態系において水の浄化、洪水と侵食の防止、野生生物への食料とすみかの提供という重要な役割を演じる。