en 



Q. 



0) 



E 



300 



200 - 



100 



Total for Southern California 



Upper Newport Bay 



> 1  1  1 — 



1979 1981 1983 1985 



1987 



1 



1989 



1 — 



1991 



Q_ 



CD 



.o 



E 



50 -\ 



40 - 



30 - 



20 - 



10 - 



1991 



Figure 3.31. Dynamics of the light-footed clapper rail population in southern California. The 

 largest number of nesting pairs occurs at Upper Newport Bay (top graph); Tijuana Estuary now 

 ranks second in the region (bottom graph). Data are numbers of pairs in censuses reported by 

 Zembal (1991). 



75 



