Lichens in Reunion Island
Alexis Merlaud
Belgian Institute for Space Aeronomy, Brussels, Belgium
Usnea lichen growing on trees in Reunion Island. Lichens are composite organisms resulting of a symbiotic association between a fungus and a photosynthetic partner, such as a green alga or a cyanobacterium. Usnea is very sensitive to air pollution, especially sulfur dioxide, which makes it an interesting biomarker for air quality.
Thanks to Valentin Duflot for the trek across Mafat and CIlaos cirques where the picture was taken.
Categories
Reuse
Creative Commons Attribution 3.0 Unported (CC BY 3.0) (opens in a new window)Credit: Alexis Merlaud (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
5.4 MB
Width
2336 px
Height
3504 px
Aspect
2:3
Brand
Canon
Model
EOS 20D
Exposure
18 mm f/5.6 1/30 s ISO 250
Taken
16 September 2011
Coordinates
-21.1013, 55.4505
Tint
Grayish olive green
Submitted
11 March 2014
Comments
No comments yet. Be the first to share your thoughts.