Aquatic food webs of the oxbow lakes in the Pantanal: A new site for fisheries guaranteed by alternated control?

► Keystone species at oxbow lakes are top predators. ► Moderate fishing pressure can be sustained on these oxbow lakes. ► High fishing pressure can be reducing drastically the aquatic diversity. ► Oxbow lakes depend on predators (in dry season) and detritus (wet season). ► Thus, floodplain is under a alternated control food web.