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ENTERING AN ERA OF WATER SCARCITY: THE CHALLENGES AHEAD
Author(s) -
Postel Sandra L.
Publication year - 2000
Publication title -
ecological applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.864
H-Index - 213
eISSN - 1939-5582
pISSN - 1051-0761
DOI - 10.1890/1051-0761(2000)010[0941:eaeows]2.0.co;2
Subject(s) - water scarcity , ecosystem , natural resource economics , environmental science , water resources , population , ecosystem services , natural resource , business , resource (disambiguation) , planetary boundaries , water quality , freshwater ecosystem , environmental resource management , water cycle , ecology , sustainability , biology , economics , computer network , demography , sociology , computer science
Fresh water is a renewable resource, but it is also finite. Around the world, there are now numerous signs that human water use exceeds sustainable levels. Groundwater depletion, low or nonexistent river flows, and worsening pollution levels are among the more obvious indicators of water stress. In many areas, extracting more water for human uses jeopardizes the health of vital aquatic ecosystems. Satisfying the increased demands for food, water, and material goods of a growing global population while at the same time protecting the ecological services provided by natural water ecosystems requires new approaches to using and managing fresh water. In this article, I propose a global effort (1) to ensure that freshwater ecosystems receive the quantity, quality, and timing of flows needed for them to perform their ecological functions and (2) to work toward a goal of doubling water productivity. Meeting these challenges will require policies that promote rather than discourage water efficiency, as well as new partnerships that cross disciplinary and professional boundaries.