NDLI: Variability and alterations of water temperatures across the Elbe and Danube River Basins

Content Provider	Springer Nature Link
Author	Markovic, Danijela Scharfenberger, Ulrike Schmutz, Stefan Pletterbauer, Florian Wolter, Christian
Copyright Year	2013
Abstract	Climate change is predicted to be a major threat to river ecosystems in the 21st century, but long-term records of water temperature in streams and rivers are rare. This study uses long-term water temperature series from the Elbe and the Danube River Basin to quantify the variability, magnitude, and extent of temperature alterations at different time scales. The observed patterns in monthly and daily water temperatures have been successfully described through statistical models based on air temperature, river discharge and the North Atlantic Oscillation Index. These models reveal that air temperature variability describes more than 80 % of the total water-temperature variability, linking anticipated changes in water temperature mainly to those in air temperature. The North Atlantic Oscillation effect deteriorates with decreasing latitude, while the discharge effect becomes more important and increases with the increase in discharge amount. The detected water temperature alterations include a phase shift in spring warming of almost 2 weeks, an increase in the number of days with temperatures above 25 °C and an increase in the duration of summer heat stress. These findings underline a significant risk for fundamental changes in river ecosystems, specifically in disruption of established patterns in food-web synchrony, and may lead to significant distortions in community structure and composition.
Starting Page	375
Ending Page	389
Page Count	15
File Format	PDF
ISSN	01650009
Journal	Climatic Change
Volume Number	119
Issue Number	2
e-ISSN	15731480
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-03-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Atmospheric Sciences Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Global and Planetary Change

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