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What looks like a single surface is a crowded community. At least five different lichens share this small patch of bark. The leafy yellow lobes are common orange lichen, while the pale grey crust beneath is made up of several crust-forming lichens, each a separate colony. The fine black lines that crack across it mark the borders where neighbouring colonies meet and stop, dividing the bark into a patchwork of territories.
The tiny discs scattered across the crust belong to different species too: black cups, brown cups with pale rims and minute orange-yellow dots, each the spore-producing structure of its own lichen. Patches of green show where free-living algae have settled in the gaps.
Communities like this build up over many years, as one lichen after another settles and competes for space. Their variety is a sign of clean, settled conditions, and on the trees of young woodland on former colliery land, each new species marks another step in the slow return of life to the landscape.
What looks like a single surface is a crowded community. At least five different lichens share this small patch of bark. The leafy yellow lobes are common orange lichen, while the pale grey crust beneath is made up of several crust-forming lichens, each a separate colony. The fine black lines that crack across it mark the borders where neighbouring colonies meet and stop, dividing the bark into a patchwork of territories.
The tiny discs scattered across the crust belong to different species too: black cups, brown cups with pale rims and minute orange-yellow dots, each the spore-producing structure of its own lichen. Patches of green show where free-living algae have settled in the gaps.
Communities like this build up over many years, as one lichen after another settles and competes for space. Their variety is a sign of clean, settled conditions, and on the trees of young woodland on former colliery land, each new species marks another step in the slow return of life to the landscape.