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Dependence of Hypolimnetic Oxygen Consumption on Ambient Oxygen Concentration: Fact or Artifact?
Author(s) -
Cornett R. J.,
Rigler F. H.
Publication year - 1984
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr020i007p00823
Subject(s) - hypolimnion , oxygen , limiting oxygen concentration , environmental science , environmental chemistry , respiration , apparent oxygen utilisation , hydrology (agriculture) , chemistry , ecology , nutrient , eutrophication , biology , geology , botany , geotechnical engineering , organic chemistry
Ten lakes studied in this investigation and the data presented by previous authors are all consistent with the hypothesis that rates of oxygen depletion in the hypolimnion of lakes do not depend upon the ambient oxygen concentration over the range of concentrations from 12 mg/L to 1.0 mg/L. By definition, aerobic respiration must stop when there is no more oxygen present. Therefore the hypolimnetic oxygen deficit can be modeled as a zero‐order chemical process that is independent of oxygen concentration. Predictions of seasonal changes in hypolimnetic oxygen concentrations can be made by estimating the slope of the linear regression of oxygen concentration against the Julian day when the sample was collected.