The ecology of the early life history stages of riverine fish: New perspectives in conservation and river management
Keckeis, H.; Schiemer, F.
The heavy modifications of large rivers over the last centuries in most industrial countries have set an increasing demand for restoration measures and river management. Conservation strategies for the riverine biota involve understanding key ecological properties and -processes characteristic for the natural state of riverine habitats. Several theories have been proposed during recent decades on hierarchically structured, multidimensional determinants of ecosystem processes, community organization and biodiversity in rivers. The success of practical programs depend to a high degree on the planning and evaluation criteria involved. Evaluation criteria must be predictive and quantitative in nature and integrate physical, chemical and biological components at different scales (Amoros et al. 1987; Ward 1989; Decamps 1996; Schiemer et al. this volume).