Los Angeles County’s landscapes encompass islands, mountains, deserts, rivers, lakes, beaches, and coastlines—supporting a remarkable diversity of ecosystems and species. The region is home to a large number of threatened and endangered plants and animals and is the most urbanized area to be designated one of Conservation International’s global biodiversity hotspots.

These natural spaces not only provide critical habitat for wildlife but also offer residents opportunities for recreation, cultural activities, and connection with nature, contributing significantly to health, well-being, and community identity. Yet these landscapes face growing stress from climate change, urbanization, and a legacy of land use decisions that have fragmented ecosystems and reduced biodiversity. Coastal and ocean ecosystems are also under pressure, despite their vital role in regulating climate, supporting marine biodiversity, and sustaining local economies and food systems.