Post by Australian Wildlife Conservancy

Look closely at a tree trunk, rock, or fallen branch, and you might spot lichen - one of nature’s most fascinating partnerships. Lichen isn’t a single organism. It’s a team effort between a fungus and microscopic algae (or cyanobacteria - or sometimes even both!) living together. The fungus provides structure and protection, while the algae produce food through photosynthesis. Together, they form the colourful crusts, leafy patches, and delicate frills that quietly blanket landscapes. Despite their size, lichens play an outsized role in ecosystems. They help break down rock into soil, provide food and shelter for tiny invertebrates, and even serve as nesting material for birds. Because lichens are highly sensitive to environmental change, they’re also important indicators of ecosystem health. By protecting intact habitats and managing threats like invasive species and intense fires, AWC’s conservation programs help ensure the landscapes where lichens thrive, and the many species that depend on them, remain healthy and resilient. 📸 A Ross/AWC