Growth rate of a very large crustose lichen (Rhizocarpon subgenus) and its implications for lichenometry

Auteur(s) et Affiliation(s)



Description :
The aim of this paper is to report measurements made since 1981 of the growth rate of a very large lichen of the Rhizocarpon subgenus which, in 2007, had a maximum diameter of 465 mm, and to discuss the implications for lichen growth studies and lichenometric dating. Specific objectives are: (1) to estimate the extent of variability in the mean annual radial growth rate both around the thallus perimeter and through time; (2) to compare the growth rate with those of smaller lichens; and (3) to evaluate the implications of the results for lichen longevity, lichen growth-rate models and lichenometric dating curves.


Type de document :
Article de périodique

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2011, vol. 93, n°. 1, p. 27-39, nombre de pages : 13, Références bibliographiques : 43 ref.

Date :
2011

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi