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This book provides a comprehensive review of the biogeochemistry in the Baltic Sea. It is based on the fact that biogeochemical processes that are relevant for the ecological state of the Baltic Sea (and other sea areas), are all in some way related to the production and mineralization of organic matter (biomass) and thus are associated with the consumption or release of CO2. The significant progress with regard to our chemical analytical capabilities concerning the marine CO2 system has facilitated new approaches to study the Baltic Sea biogeochemistry, in particular with regard to a quantitative process understanding. To demonstrate this, the authors present the fundamentals of the marine CO2 system in a theoretically sound, but still intelligible way. This is followed by a comprehensive presentation of our current knowledge about the CO2 system in the Baltic Sea and the implications for our understanding of biogeochemical processes such as production/mineralization of organic matter and the stoichiometry involved, nitrogen fixation, denitrification, and phosphate transformations at varying redox conditions. Finally, the CO2 gas exchange balance and related problems such as acidification are addressed.

Dr. Dr. Schneider analyses the opportunities, economic problems and internal weak points of middle-sized enterprises, especially from the point of view and the experience of a practitioner on the basis of enterprise analyses and interviews. Success factors of the SME are high flexibility, innovation, reliability, motivation of employees and customer loyalty as well as customer specific goods and services, which are last but not least determined by the strong influence of the enterpriser. The main problems of the SME are: too high costs for duties and bureaucracy, low capital facilities, often too little management potential; this prevents that good innovations from the markets, from the enterprise, are implemented consequently and profitably in products, methods and new market offers. This investigation gives further help and exemplars for a successful SME-management especially for the leisure time market horse management and wants to provide a scientific and experience-oriented contribution to motivate young elites to carry out their business and personal targets with a sense of proportion.