Rock-weathering by the lichen Lecidea auriculata in an arctic alpine environment

Auteur :
MCCARRROLL, D.

Description :
Scanning electron microscopy reveals that Lecidea auriculata penetrates rock surfaces, detaching, incorporating and expelling flakes of rock. Measurements on an age sequence of moraine ridges illustrate changes in the extent and intensity of weathering over time. The spatial pattern of weathering is influenced by the narrow ecological range of the species. Surface rocks on dry, exposed sites are probably weathering much more rapidly than those in adjacent damp hollows and beneath snowpatches.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1995, vol. 20, n°. 3, p. 199-206, Collation : Illustration, Références bibliographiques : 25 ref.

Date :
1995

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley