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lichen growing on trees in Great Otway National Park, Victoria, Australia

lichen growing on trees in Great Otway National Park, Victoria, Australia Stock Photo
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Image details

Contributor:

B.O'Kane / Alamy Stock Photo

Image ID:

CPKA2M

File size:

24.1 MB (2.1 MB Compressed download)

Releases:

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Dimensions:

2370 x 3554 px | 20.1 x 30.1 cm | 7.9 x 11.8 inches | 300dpi

Date taken:

5 November 2011

Location:

Great Otway National Park, Victoria, Australia

More information:

Lichens are composite organisms consisting of a symbiotic relationship between a fungus (the mycobiont) and a photosynthetic partner (the photobiont or phycobiont), usually either a green alga (commonly Trebouxia) or cyanobacterium (commonly Nostoc). Lichens occur in some of the most extreme environments on Earth—arctic tundra, hot deserts, rocky coasts, and toxic slag heaps. However, they are also abundant as epiphytes on leaves and branches in rain forests and temperate woodland, on bare rock, including walls and gravestones, and on exposed soil surfaces (e.g., Collema) in otherwise mesic habitats.

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