Water Sowing and Harvesting (WS&H) for Sustainable Management in Ecuador: A Review

Water Sowing and Harvesting (WS&H) is an ancestral knowledge widely used as a sustainable technique in water management. This study aims to analyse the importance, promotion, and cultural heritage of WS&H techniques through a literature review in Ecuador, considering applications of ancestral techniques by region (coastal, Andean and insular) with a strengths, opportunities, weaknesses, and threats (SWOTs) analysis and a focus group for a strategy proposal of the water supply. The methodology of this study includes the following: (i) an analysis of the evolution of WS&H studies in Ecuador; (ii) a presentation of WS&H techniques and their applications; and (iii) the contribution of WS&H to the Sustainable Development Goals (SDGs), complemented by a SWOTs analysis. The results show that, in Ecuador, WS&H is a method of Nature-based Solutions (NbSs) applied to the problems of water scarcity and is affordable, ecological, and has high efficiency, improving agricultural productivity and guaranteeing water supply for human consumption. The Manglaralto coastal aquifer, a case study in the coastal region of Ecuador, involves WS&H management and artificial aquifer recharge. WS&H structures became a reference for the sustainable development of rural communities that can be replicated nationally and internationally as a resilient alternative to water scarcity and a global climate emergency, contributing to the SDGs of UNESCO.