Open Access
Table 2
Nutrient concentrations and their variability in Lake Qarun during 2008–2013 (Seasonal average/CVs).
| Season | NH3, mg.L-1 | NO2, μg.L-1 | NO3, μg.L-1 | TN, mg.L-1 | PO4, μg.L-1 | TP, μg.L-1 | SiO2, mg.L-1 |
|---|---|---|---|---|---|---|---|
| 2008 |
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| Spring | 0.13/0.17 | 9.86/0.29 | 77/0.12 | – | 13.7/0.25 | 125.6/0.11 | 4.6/0.13 |
|
|
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| Summer | 0.09/0.15 | 5.35/0.74 | 79/0.38 | – | 7.6/0.70 | 86.6/0.13 | 3.3/0.09 |
|
|
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| Autumn | 0.12/0.12 | 1.56/1.34 | 45/0.15 | – | 13.8/0.14 | 102.5/0.21 | 8.7/0.09 |
2009 |
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|
|
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| Winter | 0.10/0.26 | 8.74/0.25 | 59/0.44 | – | 15.3/0.11 | 117.2/0.09 | 6.1/0.10 |
2011 |
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|
|
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| Summer | 0.42/0.57 | 9.96/1.97 | 214/1.75 | 3.85/0.35 | 31.9/0.98 | 257.6/0.77 | 5.1/0.20 |
|
|
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| Autumn | 0.22/1.20 | 25.37/2.58 | 239/1.44 | 6.15/0.58 | 53.9/1.07 | 179.2/0.83 | 5.9/0.19 |
2012 |
|||||||
|
|
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| Spring | 0.28/1.64 | 33.00/1.98 | 275/1.64 | 3.13/0.15 | 43.0/0.68 | 380.2/0.19 | 7.2/0.15 |
|
|
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| Summer | 0.32/0.60 | 12.01/1.65 | 87/1.60 | 4.69/0.12 | 80.2/0.19 | 187.9/0.20 | 12.3/0.11 |
|
|
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| Autumn | 0.17/0.61 | 29.56/1.17 | 118/0.75 | 1.61/0.24 | 12.5/1.04 | 82.9/0.26 | 11.6/0.08 |
2013 |
|||||||
|
|
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| Winter | 0.20/0.58 | 8.03/0.53 | 191/1.05 | 9.21/0.52 | 15.2/0.17 | 100.9/0.25 | 7.1/0.24 |
|
|
|||||||
| Spring | 0.46/0.57 | 16.14/2.09 | 54/1.30 | 6.21/0.06 | 13.1/0.39 | 156.6/0.20 | 7.8/0.21 |
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