TABLE 1.
Results of analysis of South Saskatchewan River waters
| Season | Dates of growth | Tempa (°C) | pH | Turbidity (NTUb) | DOCc (mg liter−1) | TKNd (mg liter−1) | NH4+ (mg liter −1) | Inorganic Ne (mg liter−1) | PO43− (mg liter−1) | HPCf (CFU ml−1) | Chl ag (mg liter−1) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Spring | 5 Apr-28 May 2001 | 11 ± 5 (3-16) | 8.45 | 4.36 | 3.2 | 0.25 | 0.08 | 0.03 | <0.05 | 905 | 3.7 |
| Summer | 19 May-7 Jul 1999 | 17 ± 3 (12-22) | 8.24 | 4.9 | 3.7 | 0.50 | 0.10 | 0.54 | <0.05 | 245 | 2.1 |
| Fall | 10 Nov 1999-3 Jan 2000 | 0.7 ± 1.1 (4-0) | 8.56 | 3.4 | 3.6 | 0.86 | 0.02 | 0.12 | 0.06 | 970 | 1.7 |
| Winter | 11 Jan-4 Mar 2001 | 0.3 ± 0.1 (0.2-0.6) | 8.37 | 0.6 | 3.1 | 0.27 | 0.05 | 0.09 | <0.05 | 84 | 0.8 |
a
Temp, in situ temperature (±1 standard deviation; values in parentheses are minima and maxima measured).
b
NTU, nephelometric turbidity units.
c
DOC, dissolved organic carbon.
d
TKN, total Kjeldahl nitrogen.
e
Inorganic N, sum of NO2− and NO3−.
f
HPC, heterotrophic plate count.
g
Chl a, chlorophyll a.