2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

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5/24/2018  |   11:15 AM - 11:30 AM   |  WHAT IF MANSERICHE DAM (PERU) IS BUILT? THEIR EFFECTS ON HYDROLOGY FEATURES, FISH DIVERSITY, AND FISH CONSUMPTION IN THE MARANON RIVER   |  430 B

WHAT IF MANSERICHE DAM (PERU) IS BUILT? THEIR EFFECTS ON HYDROLOGY FEATURES, FISH DIVERSITY, AND FISH CONSUMPTION IN THE MARANON RIVER

There have been proposals to impound the Marañón River near its outlet from the Andes at the Pongo de Manseriche, an area inhabited by several indigenous and mestizo communities, whose livelihoods are tightly linked to freshwaters ecosystem services. Fish diversity, fish migrations and fish consumption were evaluated in a 100-km section of the Marañón River and the potential flooding estimated if Manseriche dam was built. Two field expeditions allowed us the identification of 156 fish species, among which several migratory species (Curimatidae, Prochilodontidae, Pimelodidae) and the giant carachama Panaque schaeferi were distinguished. Local fisheries is maintained by the seasonal arrival of large fish schools and is essential for households either as source of income or as part of their diet; the average per capita fish consumption resulted in 15 kg/month during dry season, one of the largest values reported in the region. If Manseriche dam was built a large reservoir of about 5,439,300 Ha would be generated, which will flood a large portion of the Santiago River and some of its headwaters in Ecuador territory. Marañón’s ecosystem services are dependent on the natural hydrologic conditions, currently with no impoundment.

  • Dams
  • Fish
  • Conservation

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Presenters/Authors

Carlos Canas (), Wildlife Conservation Society, ccanas@wcs.org;


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Nonfinancial -

Mariana Montoya (), Wildlife Conservation Society, mmontoya@wcs.org;


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