| Category | 
                    Item Name | 
                    Item Title | 
                                        Item | 
                    More Info. | 
                                    
                                            
                                 | D. Physiographic Features | 
                                                     D0 Sketch map | 
                                Sketch map | 
                    
eur31-01.gif
                            
                
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                                     D1 Geographical | 
                                Bathymetric map | 
                    
eur31-02.gif
                            
                
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                                     D2 Climatic | 
                                Mean increase of surface water temperature by thermal discharge (decreasing from 10.0 Co to 1.1 Co) | 
                    
eur31-17.gif
                            
                
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                                 | E. Water Quality | 
                                                     E1 Transparency | 
                                Mean yield of European Cisco (1954-1955, 1956-1960, 1961-1965, 1966-1970, 1971-1975, 1976-1982) | 
                    
eur31-14.gif
                            
                
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                        Monthly (1979-1974, 19789-1982) | 
                    
eur31-08.gif
                            
                
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                                     E4 DO | 
                                Oxygen monthly profile by depth | 
                    
eur31-03.gif
                            
                
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                        Past trend of oxygen saturation and concentration (1970-1982) | 
                    
eur31-09.gif
                            
                
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                                     E7 Nitrogen | 
                                NH4-N monthly profile by depth | 
                    
eur31-04.gif
                            
                
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                        NO3-N monthly profile by depth | 
                    
eur31-05.gif
                            
                
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                                     E8 Phosphorus | 
                                Past trend of maximum PO4-P concentration | 
                    
eur31-10.gif
                            
                
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                        Past trends of PO4-P and Total-P concentrations (1972-1982) | 
                    
eur31-11.gif
                            
                
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                        PO4-P load and outflow | 
                    
eur31-18.gif
                            
                
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                        PO4-P monthly profile by depth | 
                    
eur31-06.gif
                            
                
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                        Total-P distribution at the deepest point (1981, 1982) | 
                    
eur31-07.gif
                            
                
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                                 | F. Biological Features | 
                                                     F3 Primary Production | 
                                Primary production of phytoplankton, monthly profile by depth | 
                    
eur31-12.gif
                            
                
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                                     F4 Biomass | 
                                Comparison between primary production of phytoplankton and periphyton and orthphosphate concentration | 
                    
eur31-16.gif
                            
                
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                        Primary production of phytoplankton, monthly (1970-1981) | 
                    
eur31-15.gif
                            
                
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                        Seasonal periodicity of phytoplankton biovolume, cell and colony number (1976-1978) | 
                    
eur31-13.gif
                            
                
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