SS1.05 How Will Aquatic Ecosystems Respond to Climate Change?
Date: Tuesday, June 11, 2002
Time: 4:45:00 PM
Location: Oak Bay
 
JoehnkKD, Chair of Water Conservation, Brandenburg University of Technology, Cottbus, Germany, klaus.joehnk@limnophysics.de
Straile, D, , Limnological Institute, University of Konstanz, Konstanz, Germany, dietmar.straile@uni-konstanz.de
 
Temperature variability of European lakes under changed climatic conditions and its impact on plankton development
image
Using a one-dimensional k-e-turbulence model the seasonal course of water temperatures for (artificial) standardized, representative lakes are calculated. Results are used to test the geographical dependence of characteristic quantities like maximum lake surface temperature, crossings of specific temperature thresholds relevant for plankton development, and duration of stagnation period. Tabulated mean monthly meteorological data for 100 stations in Europe were used as input data for the simulation model. The characteristic stratification parameters are then used to analyse the influence of changing climatic conditions on lake stratification in a geographical context. Simulation results are compared with measurements from european lakes to show the impact of varying climate on plankton development.