Extensive aquaculture in coastal and estuarine wetlands can support both increased food production and widerecosystem services when underpinned by effective management to promote productivity and hence food websthat support both commercial species and biodiversity. Changing hydrology, specifically water movement, withinwetlandssignificantly impacts the physico-chemical properties of thewater body and hence can be employedto manipulate productivity and alter patterns of recruitment of commercial species and may also transfer nonnativespecies from the supplying water bodies. The reconstructed wetlands of Veta la Palma in the DoñanaNatural Park are subjected to either a 1% or 5% d−1 water exchange with water drawn from the adjacentGuadalquivir estuary.