Lichen on a silver birch tree

Lichen on a silver birch tree

B350/0271 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 54.8MB

Downloadable file size: 6.2MB

Price image Pricing

Please login to use the price calculator


Caption: Lichen covering the trunk of a silver birch tree. Lichens are formed from the a symbiotic association between a fungus and an alga. The alga is contained within the hyphae (filaments) of the fungus. They are therefore protected from harsh conditions, and in particular from dessication. The alga supplies the fungus with nutrients that it makes by photosynthesis. Lichens are usually found growing on stones and the bark of trees. Lichen are sensitive to pollution, and are a good indicator of air quality. Photographed in the Cairngorm Mountains of northern Scotland.

Release details: Model release not required. Property release not required.

Keywords: air quality, atmospheric pollution, betula pendula, botanical, botany, britain, british, cairngorm mountains, ecological, ecology, europe, european, flora, forest, lichen, lichens, mutualism, nature, plant, scotland, scottish, silver birch, symbiosis, symbiotic, tree, uk, united kingdom

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.