Anderson E. P., Jenkins C. N., Heilpern S., Maldonado-Ocampo J. A., Carvajal-Vallejos F. M., Encalada A. C., Rivadeneira J. F., Hidalgo M., Canas C. M., Ortega H., Salcedo N., Maldonado M., Tedesco Pablo. (2018). Fragmentation of Andes-to-Amazon connectivity by hydropower dams. Science Advances, 4 (1), p. eaao1642 [7 p.]. ISSN 2375-2548.
Titre du document
Fragmentation of Andes-to-Amazon connectivity by hydropower dams
Année de publication
2018
Auteurs
Anderson E. P., Jenkins C. N., Heilpern S., Maldonado-Ocampo J. A., Carvajal-Vallejos F. M., Encalada A. C., Rivadeneira J. F., Hidalgo M., Canas C. M., Ortega H., Salcedo N., Maldonado M., Tedesco Pablo
Source
Science Advances, 2018,
4 (1), p. eaao1642 [7 p.] ISSN 2375-2548
Andes-to-Amazon river connectivity controls numerous natural and human systems in the greater Amazon. However, it is being rapidly altered by a wave of new hydropower development, the impacts of which have been previously underestimated. We document 142 dams existing or under construction and 160 proposed dams for rivers draining the Andean headwaters of the Amazon. Existing dams have fragmented the tributary networks of six of eight major Andean Amazon river basins. Proposed dams could result in significant losses in river connectivity in river mainstems of five of eightmajor systems-the Napo, Maranon, Ucayali, Beni, and Mamore. With a newly reported 671 freshwater fish species inhabiting the Andean headwaters of the Amazon (>500 m), dams threaten previously unrecognized biodiversity, particularly among endemic and migratory species. Because Andean rivers contribute most of the sediment in the mainstem Amazon, losses in river connectivity translate to drastic alteration of river channel and floodplain geomorphology and associated ecosystem services.
Plan de classement
Hydrologie [062]
Description Géographique
COLOMBIE ; EQUATEUR ; PEROU ; BOLIVIE ; BRESIL ; ANDES ; AMAZONE BASSIN
Localisation
Fonds IRD [F B010072441]
Identifiant IRD
fdi:010072441
