Proportion of Tolerant Individuals

 

This metric was selected as a replacement for the percentage of white suckers as a more

regionally appropriate tolerant group in the northeast (Miller et al. 1988; Langdon 1992). In

New Jersey, a number of tolerant species are commonly found in small and large streams

representing a wide range of water quality conditions. These tolerant species adapt well to

changing environmental conditions and often become dominant at disturbed sites. This

metric is generally useful in distinguishing moderately and severely impaired conditions.