Silvo-fishery systems are enclosed by dykes, and a large ditch surrounds a centrally located patch of mangrove
trees. The managers make use of natural tidal movement for water circulation, which is stimulated by two
water inlets. The water outlet directs the effluent through the mangrove patch, thus aiming to remove excess
nutrients from the discharge water. Shrimp and crabs find shelter in the mangroves during high tide, and are
forced back into the deeper ditch during low tide. Only natural stock is allowed, and no additional artificial
stock is used as input. In addition, no feed or fertilizer is used, although occasionally low pesticide use has been
noted. Silvo-fishery ponds are 1.5 ha or larger. The pond size can be quite flexible, as silvo-fishery rehabilitates
aquaculture areas that have been constructed before. Apart from the mentioned aquaculture management
activities, a few other management activities take place. Recreational visits are quite common in silvo-fishery
sites, mainly focused on recreational fishing, boardwalks, and environmental education. Furthermore, NTFP are
harvested at high intensity.