[GRASSLIST:2116] Landscapes and Graph Theory

[Roy Sanderson]

Hello Everyone

Has anyone seen the paper in by Dean Urban and Timothy Keitt in Ecology
vol. 82 No. 5 (2001) pp 1205-1218 on "Landscape Connectivity: a
graph-theoretic approach".  This looks like a good way to analyse
connectivity between habitat patches, and identify key patches (graph
nodes) and dispersal corridors (graph edges) for many species.  I'm
currently using GRASS 4.2.1, but I can't see anything about graph theory in
GRASS 5.0.  Anyone know whether this sort of approach can be implemented
easily in GRASS, or is it a case of getting down to some low-level C coding?

Thanks
Roy


----------------------------------------------------------------------------
Roy Sanderson
Centre for Life Sciences Modelling
Porter Building
University of Newcastle
Newcastle upon Tyne
NE1 7RU
United Kingdom

Tel: +44 191 222 7789
Fax: +44 191 222 6563
r.a.sanderson at newcastle.ac.uk
http://www.ncl.ac.uk/clsm

----------------------------------------------------------------------------