The Scientific World Journal / 2014 / Article / Tab 2 / Research Article
Natural Recovery and Planned Intervention in Coastal Wetlands: Venice Lagoon (Northern Adriatic Sea, Italy) as a Case Study Table 2 Abiotic and biotic data measured in central part of Venice Lagoon in 1987, 1993, 1998, and 2003 surveys (mean ± standard deviation (Std Dev), minimum (Min) and maximum (Max) values).
1987 1993 1998 2003 ANOVA Temperature*
°C Mean ± Std Dev 22.9 ± 2.14 25.7 ± 1.70 24.7 ± 2.72 25.7 ± 1.33 <0.001 Min ÷ Max 18.8 ÷ 27.8 22.9 ÷ 29.6 20.7 ÷ 29.7 22.7 ÷ 29.7 pH* Mean ± Std Dev 8.86 ± 0.38 8.48 ± 0.19 8.02 ± 0.13 7.65 ± 0.10 <0.001 Min ÷ Max 8.18 ÷ 9.54 8.21 ÷ 8.80 7.65 ÷ 8.27 7.41 ÷ 7.85 Salinity Mean ± Std Dev 30.7 ± 1.72 31.4 ± 2.1 29.6 ± 3.16 30.9 ± 3.44 0.08 Min ÷ Max 25.5 ÷ 33.6 24.7 ÷ 34.8 22.2 ÷ 34.9 18.0 ÷ 35.4 Oxygen saturation* % Mean ± Std Dev 282 ± 73.4 134 ± 29.0 116 ± 27.5 115 ± 22.3 <0.001 Min ÷ Max 159 ÷ 392 88.0 ÷ 214 70.0 ÷ 202 82.5 ÷ 181 Sediment fine fraction % Mean ± Std Dev 70.5 ± 27.1 60.4 ± 29.1 64.3 ± 29.8 0.12 Min ÷ Max 12.6 ÷ 98.7 11.1 ÷ 95.8 5.69 ÷ 98.2 Macroalgal biomass* kg fwt/m2 Mean ± Std Dev 5.86 ± 6.05 0.51 ± 1.50 0.20 ± 0.99 0.08 ± 0.18 <0.001 Min ÷ Max 0 ÷ 25.0 0 ÷ 7.50 0 ÷ 5.50 0 ÷ 0.80 Total nitrogen* mg/cm3 Mean ± Std Dev 1.19 ± 0.62 1.13 ± 0.50 0.86 ± 0.38 0.70 ± 0.27 <0.001 Min ÷ Max 0.22 ÷ 2.98 0.33 ÷ 2.62 0.13 ÷ 1.37 0.09 ÷ 1.15 Inorganic phosphorus* µ g/cm3 Mean ± Std Dev 282 ± 73.8 295 ± 73.8 320 ± 60.7 332 ± 83.2 0.001 Min ÷ Max 146 ÷ 474 141 ÷ 423 215 ÷ 466 216 ÷ 660 Organic phosphorus* µ g/cm3 Mean ± Std Dev 105 ± 43.3 65.0 ± 27.4 66.5 ± 27.0 53.2 ± 28.4 <0.001 Min ÷ Max 49.0 ÷ 246 27.0 ÷ 124 15.3 ÷ 117 3.02 ÷ 114 Total phosphorus µ g/cm3 Mean ± Std Dev 387 ± 101 360 ± 82.6 386 ± 54.9 385 ± 79.7 0.27 Min ÷ Max 227 ÷ 720 184 ÷ 511 302 ÷ 534 295 ÷ 665 Inorganic carbon mg/cm3 Mean ± Std Dev 66.4 ± 24.8 67.6 ± 27.0 68.0 ± 21.5 72.3 ± 22.7 0.08 Min ÷ Max 25.3 ÷ 117 22.0 ÷ 120 38.4 ÷ 121 28.1 ÷ 123 Organic carbon* mg/cm3 Mean ± Std Dev 8.85 ± 3.45 6.68 ± 3.30 10.7 ± 3.57 5.62 ± 2.64 <0.001 Min ÷ Max 2.72 ÷ 16.7 1.91 ÷ 14.2 4.30 ÷ 18.5 0.92 ÷ 12.7 Total carbon mg/cm3 Mean ± Std Dev 75.2 ± 23.9 74.3 ± 25.9 78.7 ± 19.9 77.9 ± 22.0 0.23 Min ÷ Max 33.8 ÷ 124 25.6 ÷ 123 51.3 ÷ 127 33.6 ÷ 124 Observations 31 31 31 31
*Significant temporal fluctuations (ANOVA test,
< 0.05).