Research Article
Tyrrhenian Upper Waters in the Ustica Island (Marine Protected Area, Sicily, Italy)
Table 1
Mean values (
), standard deviation (
), and number of samples
for all examinated parameters.
| | | Autumn 2001 | Winter 2002 | Spring 2002 | Summer 2002 | Autumn 2002 | Winter 2003 |
| Temperature () | | 20.46 | 15.01 | 18.06 | 24.72 | 20.40 | 15.76 | | 4.09 | 0.38 | 2.13 | 3.32 | 3.52 | 0.98 | | 42 | 36 | 30 | 30 | 48 | 42 |
| Salinity (PSU) | | 37.81 | 37.62 | 37.74 | 37.76 | 37.94 | 37.88 | | 0.35 | 0.26 | 0.17 | 0.11 | 0.08 | 0.28 | | 42 | 36 | 30 | 30 | 48 | 42 |
| Dissolved oxygen (ml) | | 5.51 | 5.70 | 5.77 | 5.73 | 5.56 | 6.08 | | 0.26 | 0.13 | 0.22 | 0.39 | 0.31 | 0.35 | | 37 | 36 | 30 | 29 | 47 | 40 |
| Nitrate (M) | | 1.96 | 2.00 | 0.84 | 1.50 | 2.35 | 3.68 | | 2.68 | 1.54 | 1.25 | 1.40 | 2.17 | 4.24 | | 14 | 12 | 10 | 10 | 16 | 14 |
| Phosphate (M) | | 0.25 | 0.31 | 0.24 | 0.20 | 0.16 | 0.44 | | 0.17 | 0.17 | 0.19 | 0.12 | 0.08 | 0.42 | | 14 | 12 | 10 | 10 | 16 | 14 |
| Silicate (M) | | 10.77 | 12.42 | 9.46 | 7.11 | 6.18 | 6.86 | | 8.90 | 8.61 | 5.36 | 3.51 | 4.26 | 5.22 | | 14 | 12 | 10 | 10 | 16 | 15 |
| Chlorophyll (mg/mc) | | 3.97 | 5.88 | 1.08 | 0.99 | 1.93 | 5.80 | | 2.66 | 3.17 | 0.96 | 0.47 | 2.92 | 3.70 | | 37 | 36 | 30 | 29 | 41 | 29 |
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