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Water scarcity and fish imperilment driven by beef production

Author(s):

Brian D. Richter
Dominique Bartak
Kyle Frankel Davis
Peter Debaere
Arjen Y. Hoekstra
Tianshu Li
Landon Marston
Ryan McManamay
Mesfin M. Mekonnen
Benjamin L. Ruddell
Richard R. Rushforth
J. Tara. Troy

Year:

2020

Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Southern Research Station

Source:

Nature Sustainability

Description

Human consumption of freshwater is now approaching or surpassing the rate at which water sources are being naturally replenished in many regions; creating water shortage risks for people and ecosystems. Here we assess the impact of human water uses and their connection to water scarcity and ecological damage across the United States; identify primary causes of river dewatering and explore ways to ameliorate them. We find irrigation of cattle-feed crops to be the greatest consumer of river water in the western United States; implicating beef and dairy consumption as the leading driver of water shortages and fish imperilment in the region. We assess opportunities for alleviating water scarcity by reducing cattle-feed production; finding that temporary rotational fallowing of irrigated feed crops can markedly reduce water shortage risks and improve ecological sustainability. Long-term water security and river ecosystem health will ultimately require Americans to consume less beef that depends on irrigated feed crops.

Citation

Richter, Brian D.; Bartak, Dominique; Caldwell, Peter; Davis, Kyle Frankel; Debaere, Peter; Hoekstra, Arjen Y.; Li, Tianshu; Marston, Landon; McManamay, Ryan; Mekonnen, Mesfin M.; Ruddell, Benjamin L.; Rushforth, Richard R.; Troy, J. Tara. 2020. Water scarcity and fish imperilment driven by beef production. Nature Sustainability. 3: 319-328. https://doi.org/10.1038/s41893-020-0483-z

Publication Notes

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  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
https://www.fs.usda.gov/treesearch/pubs/59918