A Shifting Mosaic of Grasslands and Shrublands: Research Brief

To  better  understand  vegetation  succession  in  the   Los  Angeles,  California  basin,  modern  aerial   photos  (1980)  were  measured  and  compared  to   older  aerial  photos  (1928  &  1936),  spanning   roughly  50  years  of  vegetation  change.  Through   this  comparison,  the  authors  found  that shrublands  and  grasslands  formed  a  dynamic   mosaic. 
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Fruedenberger, D.O., B.E. Fish, and J.E. Keeley. 1987. Distribution and stability of grasslands in the Los Angeles basin. Bull. Southern California Acad. Sci. 86(1):13-26.