|
Caption: This chart shows the number of species or taxa richness, which is also termed the Richness index for all Humboldt Bay tributary sampling locations for all years sampled. Harrington (1999) characterized healthy communities as having more than 36 species, while those with fewer than 26 species fall within the range of impaired. Click on the Picture tab to see a map of relative monitoring locations. Data were collected by PALCO. See Info Links for more information on using aquatic insects as indicators.
|