Presence/absence of a keystone species as an indicator of rangeland health

Title	Presence/absence of a keystone species as an indicator of rangeland health
Authors:	Krogh, S.N.;Zeisset, M.S.;Jackson, E.;Whitford, W. G.
Publication Type	Journal Article
Year of Publication:	2002
Volume:	50
Pagination:	513-519
Accession Number:	JRN1434
URL	http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WH9-45FC338-3Y-1&_cdi=6845&_user=1496926&_orig=browse&_coverDate=03%2F31%2F2002&_sk=999499996&view=c&wchp=dGLbVtb-zSkWz&md5=3dcde2ac1560a651479d49261431f192&ie=/sdarticle.pdf