Climate Change and the European Water Dimension - Agri ...

These studies have documented an increase in spring water temperature (Figure
VI.A.2) leading to an earlier onset of thermal stratification, a longer stratified
period during summer, higher summer surface temperatures, and a trend of
rising deep-water temperature. Among the lakes analysed so far in the
Salzkammergut region, a high degree of synchrony (coherence) in timing of physical
and chemical parameters has been established. Changes in run-off conditions
may alter the residence time and the in-lake concentrations in the near future.
Coherence
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
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Physical Chemical Nutrients Biological
Figure VI.A.3. Spatial coherence measured as Spearman
correlation coefficients for groups of variables between alpine
lakes in the Salzkammergut region of Austria (see also Dokulil
and Teubner, 2002).
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