Stream productivity analysis with dorm-II. Parameter estimation and sensitivity

John S. Gulliver, Heinz G. Stefan

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The dissolved oxygen routing model DORM, which determines productivity and respiration of a stream biological community, requires in addition to stream geometry and stream flow, parameter values for reaeration coefficients and temperature and dissolved oxygen (DO) limitations on respiration. Illustrated are the methods used to obtain numerical values in a field study at the U.S. EPA Monticello Ecological Research Station. The calculated community productivity and respiration rates are sensitive to certain input parameters and assumptions. Analysis showed that, among the many parameters needed, hydraulic residence time and reaeration coefficients should be determined with utmost care. Other sensitivity tests included temperature effects, half-saturation values and longitudinal dispersion.

Original languageEnglish (US)
Pages (from-to)1577-1588
Number of pages12
JournalWater Research
Volume18
Issue number12
DOIs
StatePublished - 1984

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