%NIS by Species 
Figure 3.3.3. Percent of nonindigenous species relative to the number of 
nonindigenous and native species per sample (%NISs PP ). 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). 
100 
80 - 
Figure 3.3.4. Average percent of nonindigenous species relative to the number of 
nonindigenous and native species per sample (%NIS Spp ) by location for intertidal 
samples obtained in 2002. 
41 
