Abstract

ZAMORA TALAVERANO, Noe Sabino; GOMEZ LORA, Jhon Walter; GOMEZ ESCRIBA, Benigno Paulo  and  NIETO ARBOLEDA, Yngrid Ysabel. Ecological flow as a governance and policy tool for the conservation of Cryphiops caementarius in the Lurín river. e-Rev. Multidiscip. Saber [online]. 2025, vol.3, e-RMS03112025.  Epub Dec 10, 2025. ISSN 2960-2467.  https://doi.org/10.61286/e-rms.v3i.283.

The research aimed to estimate the ecological flow of the Lurín River to support the conservation of the river shrimp (Cryphiops caementarius) in the Antapucro sector, given its ecological and socioeconomic importance. A hydrological method with a quantitative, non-experimental, and explanatory design was applied, using historical hydrological series from 1964 to 2024 provided by the National Water Authority, integrating both modeled and observational data. The results revealed a marked hydrological seasonality, with maximum flows of 7.98 m³/s in March and minimum values of 0.29 m³/s in September, indicating the vulnerability of the ecosystem during the dry season. The biological characterization of habitats showed that Cryphiops caementarius currently has a restricted distribution, limited to midstream zones with deep and stable substrates, while eight representative fish species were recorded, including river silverside, catfish, lorna, carachita, toadfish, freshwater crab, and dragonfly larvae. Additionally, multiple anthropogenic pressures were identified, such as illegal fishing, domestic discharges, mining liabilities, agrochemical use, and solid waste disposal, all of which pose direct threats to aquatic biodiversity. In conclusion, the findings provide a technical basis for sustainable water flow management, ecological restoration, and the conservation of C. caementarius within the Lurín River ecosystem.

Keywords : Antapucro; ecological flow; native ichthyofauna; water management; aquatic biodiversity.

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