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One of the most effective techniques for biomonitoring and detecting habitats at risk in aquatic ecosystems is the reference condition approach (RCA). The RCA uses benthic community structure as a measure of a system’s condition. With the RCA, the benthic community of a potentially stressed ecosystem is compared with that of unstressed reference sites that have similar environmental conditions. Benthos have several advantages over other indicators: there are many species; they are relatively sedentary; and they represent a diverse range of trophic positions and tolerance to disturbance. The RCA will soon be used for monitoring in the Fraser River basin (FRB) based on data from 219 reference sites in the FRB. The reference collections were made in early autumn and 1 question is the extent to which predictions of expected communities at test sites are dependent on the season when samples are collected. Results showed that the RCA was reasonably robust...
Reece, Pamela F., Richardson, John S.. 1999. Biomonitoring with the Reference Condition Approach for the Detection of Aquatic Ecosystems at Risk (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Conference Biology & ManagementProceedings. Vol. 2
Other Identifier: University College of the Cariboo
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