Aquaculture in general and shrimp farming in particular have recently developed super-intensive cultivation strategies without water exchange. This approach responds to environmental questions raised by both society and the scientific community regarding sustainable development concepts that require a convergence of ecological prudence, economic efficiency and social equity in all human activities (Bailey, 1988; Brown, 1989; Pruder, 1992; , 1992; Kinkelin and Michel, 1992; Pérez, 1993; Currie, 1994; Rosenthal, 1994; Larsson et al., 1995; Williams et al. (1996) demonstrated that it is possible to produce shrimp at high density in raceway systems using water recirculation. Recent advances in ultra-dense crops, also known as "suspended growth systems" (Hargreaves, 2006) and "active suspension ponds" (Avnimelech, 2006), reinforce the idea that it is possible to produce aquatic organisms in an intensive and particularly biosafe way. The absence of effluent, the reduction in space used and the drastic reduction in the introduction of infectious diseases are the main criteria justifying its development (McNeil, 2000; McAbee et al., 2003; Burford et al., 2003 , 2004). ; Pruder, 2004; Sowers et al., 2005; Wasielesky et al., 2006; Azim and Little, 2008; De Schryver et al., 2008). Although this relatively new aquaculture technology is still in development (De Schryver et al., 2008), significant research efforts have been made in an effort to understand the physical, chemical and biological phenomena present in the water that dictate the crop dynamics (Hopkins et al., 1993; Moss and Pruder, 1995; Sandifer and Hopkins, 1996; Davis and Arnold, 1998; Avnimelech, 1999; Some studies suggest that shrimp farming in a closed system (without exchange of water) can maintain a water quality deemed acceptable for these organisms (Thakur and Lin, 2003). Others suggest that the water quality, although “poor” due to the high quantity of nutrients. accumulated over time, is sufficient to guarantee the growth and survival of animals (Burford et al., 2006) criticizes the majority of studies concerning these so-called “suspended growth” systems, because they suggest that the The role of bacteria in maintaining and improving water quality is more important than that of phytoplankton. metabolism. The importance of primary productivity in crops (extensive, semi-intensive, polycultures, etc.) of different organisms is well documented (Noriega-Curtis, 1979; Laws and Malecha, 1981; Chang and Ouyang, 1988; Yusoff and McNabb,