| Front matter | _ | 
            
              | Preface: Editorial | _ | 
            
              | Article: Trends of vegetation change in colline and submontane climax forests in Switzerland | 3 | 
            
              | Article: Responses od 21 wetland species to shortages of light, nitrogen and phosphorus | 13 | 
            
              | Article: Spatially specific simulation of the long-term development of a subalpine pasture in the Swiss National Park | 27 | 
            
              | Article: Effects of light and nutrient supply on the growth and competitive ability of five Carex species | 41 | 
            
              | Article: Shifts in abundance of fen-meadow species along a nutrient gradient in a field experiment | 57 | 
            
              | Article: Research Project : life-history and genetic variation of native vs. introduced populations of the perennial Solidago gigantea Ait. (Asteraceae) | 73 | 
            
              | Article: Research Project : ecology of transgenic crop plants expressing insecticidal Bt δ-endotoxins : effects on trophic interactions and biodiversity of insect pollinators, non-target herbivores and natural enemies | 79 | 
            
              | Article: Research Project : transgene flow from crops to wild plants, consequences for associated insects and implications for hybrid fitness | 89 | 
            
              | Article: Research Project : development of growth rings in roots of dicotyledonous perennial herbs : experimental analysis of exological factors | 97 | 
            
              | Rubric: Summaries of diploma and PhD theses (2000) | 107 | 
            
              | Association News: Annual report of the Geobotanical Institute ETH (2000) | 129 | 
            
              | Table of Contents | _ |