Abstract

The use of adensine triphosphate (ATP) analysis for freshwate algal and plankton populations was evaluated as a measure of biomass and as a bioassay response parameter. ATP analysis was performed using the firefly luminescence procedure. In short term laboratory studies. ATP levels in cultured algae and lake plankton correlate well with other standard biomass parameters, including chlorophyll a and dry weight. Algal ATP responded rapidly to mercury addition and pH changes, indicating its usefulness as a measurement of toxicity. The rapid response of ATP following nutrient additions to starved algal cultures suggests ATP may be useful as a tool in nutrient bioassay studies.

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