Table 5. Algal parameters used in the model for the Klamath River upstream of Keno Dam, Oregon.
[Abbreviations: °C, degrees Celsius; g, gram; g/g, gram per gram; g/m3, gram per cubic meter; m, meter; m/d, meter per day; m2/g, square meter per gram; W/m2, Watt per square meter; 1/d, 1 per day]
| Parameter |
Blue-green
algae |
Diatoms |
Other
algae |
Description |
| EXA |
0.088 |
0.542 |
0.170 |
Light extinction due to algae, m2/g |
| AG |
3.09 |
0.80 |
1.4 |
Maximum algal growth rate, 1/d |
| AR |
0.06 |
0.04 |
0.03 |
Maximum respiration rate, 1/d |
| AE |
0.06 |
0.04 |
0.04 |
Maximum algal excretion rate, 1/d |
| AM |
0.41 |
0.005 |
0.005 |
Maximum algal mortality rate, 1/ d |
| AS |
0.80 |
0.01 |
0.005 |
Settling rate, m/d |
| AHSP |
0.006 |
0.004 |
0.004 |
Algal half-saturation for phosphorus limited growth, g/m3 |
| AHSN |
0.000 |
0.013 |
0.100 |
Algal half-saturation for nitrogen limited growth, g/m3 |
| ASAT |
30 |
45 |
56 |
Light saturation intensity at maximum photosynthetic rate, W/m2 |
| AT1 |
12 |
4 |
12 |
Lower temperature parameter for rising rate function, °C |
| AT2 |
26 |
10 |
22 |
Upper temperature parameter for rising rate function, °C |
| AT3 |
35 |
16 |
25 |
Lower temperature parameter for falling rate function, °C |
| AT4 |
40 |
20 |
35 |
Upper temperature parameter for falling rate function, °C |
| AK1 |
0.1 |
0.1 |
0.1 |
Fraction of rate at AT1 |
| AK2 |
0.99 |
0.99 |
0.99 |
Fraction of rate at AT2 |
| AK3 |
0.99 |
0.99 |
0.99 |
Fraction of rate at AT3 |
| AK4 |
0.1 |
0.1 |
0.1 |
Fraction of rate at AT4 |
| AP |
0.004 |
0.004 |
0.004 |
Stoichiometric equivalent between biomass and phosphorus, g/g |
| AN |
0.059 |
0.059 |
0.059 |
Stoichiometric equivalent between biomass and nitrogen, g/g |
| AC |
0.46 |
0.46 |
0.46 |
Stoichiometric equivalent between biomass and carbon, g/g |
| ACHLA |
0.031 |
0.031 |
0.031 |
Ratio between algal biomass and chlorophyll a, milligram algae/µg chla |
| ALPOM |
0.8 |
0.8 |
0.8 |
Fraction of algal biomass converted to particulate organic matter when algae die |
| ANPR |
0.001 |
0.001 |
0.001 |
Algal half saturation preference constant for ammonium |
|
First posted July 14, 2011
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U.S. Department of the Interior |
U.S. Geological Survey