Evaluation de la qualité des eaux dans les zones d’élevage de poisson.

Abstract

Aquaculture involves the rearing and harvesting of fish, molluscs and aquatic plants. This activity represents an increasingly important part of the food production sector. The breeding of aquatic animals can lead to environmental impacts due to releases of organic or inorganic matter, food and nutritional waste, etc. Physico-chemical analysis (O2, conductivity, pH, temperature, turbidity and nutrient salts, etc.) shows the quality of the water column and can determine the level of contamination and degradation of the environment at farm level aquaculture. Several works have dealt with the subject of the impact of aquaculture on the environment, by demonstrating that the rates of degradation of the environment (especially in mineral elements) are close to fish farming, mainly in the superficial layers of the column of water in the vicinity of breeding cages and they increase in line with the age of the farms. The interaction between the activities of the aquaculture project and the environment is sometimes sufficiently complex or extensive to merit careful analysis and this through the improvement and management of feeding, water treatment and integrated aquaculture.