In high-density systems with zero water exchange, pond ecology shifts from an autotrophic, phytoplankton-based microbial community to a heterotrophic, bacterial-based community.
Changing paradigms in shrimp farming
Square-shaped and deep ponds may explain partially why Belize Aquaculture is able to produce a large amount of shrimp on a unit area basis.
A zero-water-exchange strategy to produce shrimp reduces the effluents and sediments that would normally be released to the environment by a typical intensive shrimp farm.
The focus at Belize Aquaculture Ltd. was to use clean animals that perform well at high densities and in waters with high nutrient loads.