The influence of shrimp farms organic waste management on chemical water quality

作者：Ramos e Silva Carlos Augusto; Davalos Pablo Bezerra; Sternberg Leonel da Silveira Lobo; Soares de Souza Flavo Elano; Constantino Spyrides Maria Helena; Lucio Paulo Sergio

来源：Estuarine, Coastal and Shelf Science, 2010, 90(1): 55-60.

DOI：10.1016/j.ecss.2010.08.014

• shrimp farming
• environmental impact
• organic pond
• semi-intensive pond
• intensive pond

We evaluated the physical chemical properties and nutrient concentrations in two shrimp ponds under conventional management, intensive (I-P) and semi-intensive (SI-P), and one under organic management (O-P), three days after loading and before stoking. The mean's total alkalinity concentrations were 2.26 +/- 0.04 mM, 2.28 +/- 0.01 mM and 2.59 +/- 0.01 mM, respectively for I-P. SI-P and O-P. Bicarbonate and carbonate accounted for 62% and 37% in I-P, 64% and 36% in SI-P and 83-17% in O-P, respectively. Aragonite and calcite were oversaturated around Omega = 5. Mean total phosphate (TP) concentrations were 441.37 +/- 92.06 mu g/L, 449 +/- 48 mu g/L and 473.64 +/- 84.17 mu g/L, under I-P SI-P and O-P management respectively. Following this sequence, NO(3)(-) concentration was 2.98 +/- 0.7 mu g/L, 1.16 +/- 0.16 mu g/L and 0.32 +/- 0.12 mu g/L, under I-P, SI-P and O-P management respectively. Thus, the data suggest that different management of farm organic waste leads to different chemical water quality.

• 出版日期2010-11-20