DOI: 10.17151/luaz.2019.48.1
How to Cite
Castro Rojas, G. V. ., Naranjo Merino, C. A. ., & Rodríguez Pulido, . J. A. . (2019). Water footprint of regional products : the case of white cachama (Piaractus brachypomus). Revista Luna Azul (On Line), (48), 01–22. https://doi.org/10.17151/luaz.2019.48.1

Authors

Gloria Victoria Castro Rojas

Bióloga M.Sc. Gestión Ambiental Sostenible, Docente FCBI. Universidad de los Llanos, Villavicencio (Meta) - Colombia. Grupo de investigación Biorinoquia.

Universidad de los Llanos
glovicar@unillanos.edu.co
Carlos Andrés Naranjo Merino

Ingeniero Químico, Director División Sostenibilidad, Gaia Servicios Ambientales, Medellín (Antioquia) – Colombia.

glovicar@unillanos.edu.co
José Ariel Rodríguez Pulido

Biólogo M. Sc. ©Ph D Docente FCBI. Universidad de los Llanos, Villavicencio (Meta) – Colombia. Grupo de investigación GRITOX.

Universidad de los Llanos
glovicar@unillanos.edu.co

Abstract

In response for the demand of water resources, the ecological indicator "water footprint" emerges which is measured in terms of the water consumed and/or contaminated per liters of water/kg/crop. The Water Footprint helps to optimize the use of water resources by reducing water changes, increasing planting densities, using closed systems with recirculation and/or green water technologies. For the calculation of water footprint in fish ponds of the Piedemonte Llanero, the climatology, meteorology and hydrological regime in the Municipality of Restrepo, Meta, Colombia were characterized. Calculations of potential evapotranspiration, as well as effective precipitation were carried out. The volume required for the assimilation of pollutants by water bodies and virtual water for the preparation of the concentrate was also considered. A water footprint of 3848.5 L water/kg/crop was calculated for the cultivation of white cachama (Piaractus brachypomus), a value lower than that reported for other fish cultures and even for other agricultural activities. It was also found that the Indirect Water Footprint (2913.3 L/kg) is the one that contributes the most to the total value of the Water Footprint. This demonstrates the difference in water consumption in the production of cachama, bringing it closer to a sustainable production system.

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