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Ecosystem Shifts: Implications for Groundwater Management
Environmental and Resource Economics ( IF 4.955 ) Pub Date : 2021-06-05 , DOI: 10.1007/s10640-021-00569-7
Encarna Esteban , Elena Calvo , Jose Albiac

Freshwater ecosystems provide a large number of benefits to society. However, extensive human activities threat the viability of these ecosystems, their habitats, and their dynamics and interactions. One of the main risks facing these systems is the overexploitation of groundwater resources that hinders the survival of several freshwater habitats. In this paper, we study optimal groundwater paths when considering freshwater ecosystems. We contribute to existing groundwater literature by including the possibility of regime shifts in freshwater ecosystems into a groundwater management problem. The health of the freshwater habitat, which depends on the groundwater level, presents a switch in its status that occurs when a critical water level (‘tipping point’) is reached. Our results highlight important differences in optimal extraction paths and optimal groundwater levels compared with traditional models. The outcomes suggest that optimal groundwater withdrawals are non-linear and depend on the critical threshold and the ecosystem’s health function. Our results show that the inclusion of regime shifts in water management calls for a reformulation of water policies to incorporate the structure of ecosystems and their interactions with the habitat.



中文翻译:

生态系统转变:对地下水管理的影响

淡水生态系统为社会提供了大量好处。然而,广泛的人类活动威胁着这些生态系统、它们的栖息地以及它们的动态和相互作用的生存能力。这些系统面临的主要风险之一是地下水资源的过度开发,这阻碍了几个淡水栖息地的生存。在本文中,我们研究了考虑淡水生态系统时的最佳地下水路径。我们通过将淡水生态系统中的制度转变的可能性纳入地下水管理问题,为现有的地下水文献做出贡献。淡水栖息地的健康状况取决于地下水位,当达到临界水位(“临界点”)时,其状态会发生变化。与传统模型相比,我们的结果突出了最佳提取路径和最佳地下水位的重要差异。结果表明,最佳地下水抽取是非线性的,取决于临界阈值和生态系统的健康功能。我们的研究结果表明,将制度转变纳入水资源管理需要重新制定水资源政策,以纳入生态系统的结构及其与栖息地的相互作用。

更新日期:2021-06-05
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