Abstract
DENITRIFICATION (biological conversion of nitrate and nitrite to nitrous oxide and molecular nitrogen) and nitrate reduction (assimilation of nitrate–nitrogen in microbial protoplasm) in lake sediments can play an important role in the nitrogen budgets of lakes. The hydrology of many lakes is such that ground water seepage through the floor constitutes a significant source of water income1. In such cases, nitrate in the incoming ground water must be considered when a nitrogen budget is calculated for the lake system. An excellent example is the estimate for Lake Mendota, Wisconsin2, in which nitrate in seepage water constituted nearly 36% of the nitrogen added to the lake.
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KEENEY, D., CHEN, R. & GRAETZ, D. Importance of Denitrification and Nitrate Reduction in Sediments to the Nitrogen Budgets of Lakes. Nature 233, 66–67 (1971). https://doi.org/10.1038/233066a0
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DOI: https://doi.org/10.1038/233066a0
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