Fig. 4

The bioeconomy canal. During the construction, several problems arise. Illegal wastes are mixed with the excavated material. The villages near the construction site suffer from clouds of dust. Agricultural wells dry up. The villagers enclaved by the construction site without benefits of platforms are mobilizing. The canal becomes an issue between agriculture, navigation, and waterfowl hunting, which compete for water rights in summer. To reach a compromise, the project owner agreed to finance two additional platforms and an irrigation network from the Louette reservoir, whose capacity was increased. The agricultural cooperatives become key players in the management of irrigation, erosion, spoilage, and agricultural pollution. River traffic increases mainly due to the export of foodstuffs. Road traffic is also increasing. The offsetting of the ecological impacts of the digging of the canal is carried out in sites, without any gain in biodiversity