"A Systems Analysis of the Baltic Sea" offers a comprehensive examination of the physical, biochemical, and ecological processes that govern the inputs, distribution, and ecological impacts of nutrients and toxic substances in the Baltic Sea region. In recent decades, the widespread effects of pollution on marine estuaries and enclosed coastal seas have become evident, with the Baltic Sea being one of the first areas where anoxic depths, extensive algal blooms, and the decline of top predators such as sea eagles and seals have been observed. This book combines extensive overviews with budgets and dynamic simulation models, adopting an interdisciplinary approach to analyze and describe a marine ecosystem. It not only provides an overview of the Baltic Sea but is also beneficial for marine scientists studying large marine ecosystems.