Author:
Goldman Charles R.,Jassby Alan D.,Hackley Scott H.
Abstract
The response of Lake Tahoe water to macronutrient supplementation has been assayed with inorganic 14C uptake since the 1960s. On the decadal scale, a change in bioassay response to macronutrient enrichment took place around 1980, with a decrease in the frequency of N stimulation and an increase in the frequency of P stimulation. On the annual scale, an effect of spring mixing depth on the size of the bioassay response could be observed: stronger mixing events resulted in a more positive response. On the seasonal scale, the response magnitude was affected by stratification, but the significance of the response was independent of season. In a subset of the bioassays, in vivo fluorescence and chlorophyll a were measured in addition to inorganic 14C uptake; bioassay results were essentially the same, regardless of which of these three bioassay response indicators was used.
Publisher
Canadian Science Publishing
Subject
Aquatic Science,Ecology, Evolution, Behavior and Systematics
Cited by
63 articles.
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