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All data are provided in 30' latitude-longitude (i.e., 0.5°
degree) gridded format in the Geographic projection. A full description
of the data development is provided in the Supplementary
Information available on the Nature website.
Protecting the world’s freshwater resources requires diagnosing
threats over a broad range of scales, from global to local. Here we
present the first worldwide synthesis to jointly consider human and
biodiversity perspectives on water security using a spatial framework
that quantifies multiple stressors and accounts for downstream impacts.
We find that nearly 80% of the world’s population is exposed to
high levels of threat to water security. Massive investment in water
technology enables rich nations to offset high stressor levels without
remedying their underlying causes, whereas less wealthy nations remain
vulnerable. A similar lack of precautionary investment jeopardizes
biodiversity, with habitats associated with 65% of continental discharge
classified as moderately to highly threatened. The cumulative threat
framework offers a tool for prioritizing policy and management responses
to this crisis, and underscores the necessity of limiting threats at
their source instead of through costly remediation of symptoms in order
to assure global water security for both humans and freshwater biodiversity.
Related datasets from this study can be viewed in the gallery at:
http://app.databasin.org/app/pages/galleryPage.jsp?id=a91e93e98b8a4affa9106b6410f7a309
Data Provided By:
C. J. Vörösmarty, P. B. McIntyre, M. O. Gessner, D. Dudgeon,
A. Prusevich, P. Green, S. Glidden, S. E. Bunn, C. A. Sullivan, C. Reidy
Liermann & P. M. Davies
Content date:
2010
Citation:
C. J. Vörösmarty, P. B. McIntyre, M. O. Gessner, D. Dudgeon,
A. Prusevich, P. Green, S. Glidden, S. E. Bunn, C. A. Sullivan, C. Reidy
Liermann & P. M. Davies. 2010. Global threats to human water
security and river biodiversity. Nature 467, 555-561.
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