Journal
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
Volume 8, Issue 9, Pages 461-466Publisher
ECOLOGICAL SOC AMER
DOI: 10.1890/090037
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Funding
- NSF [DBI 0640300, DEB 0454001]
- Maryland Sea Grant [SA7528085-U]
- NSF LTER [DEB-9714835]
- Emerging Frontiers
- Direct For Biological Sciences [1108675] Funding Source: National Science Foundation
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Water temperatures are increasing in many streams and rivers throughout the US. We analyzed historical records from 40 sites and found that 20 major streams and rivers have shown statistically significant, long-term warming. Annual mean water temperatures increased by 0.009-0.077 degrees C yr(-1), and rates of warming were most rapid in, but not confined to, urbanizing areas. Long-term increases in stream water temperatures were typically correlated with increases in air temperatures. If stream temperatures were to continue to increase at current rates, due to global warming and urbanization, this could have important effects on eutrophication, ecosystem processes such as biological productivity and stream metabolism, contaminant toxicity, and loss of aquatic biodiversity.
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