Nutrient Criteria Slide Show            Slide 28

The fact that elevated phosphorus concentrations in the water column are ephemeral and highly episodic does not mean phosphorus is unimportant.  It does mean, however, that phosphorus is very hard to measure directly.   


Nutrients can be "sequestered" in streams by both biotic and abiotic forces.  It may be possible to use biological indicators as surrogates for the measurement of nutrients which are ephemeral and highly episodic in nature such as P.


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