%NIS by Abundance 
Figure 3.3.5. Relative abundance of nonindigenous species relative to the abundance 
of nonindigenous and native species per sample (%NIS AbU n). Analysis based on 
all sites including the high marsh in San Francisco with the exception of three 
samples with no nonindigenous or native species (N = 214). 
120 i- 
100 - 
Figure 3.3.6. Average percent of nonindigenous species relative to the abundance of 
nonindigenous and native species per sample (%NIS A bun) by location for intertidal 
samples obtained in 2002. 
42 
