Eutrophication in Planktonic Ecosystems: Food Web Dynamics and Elemental Cycling

The PELAG 1996 Symposium Proceedings provides the reader with the latest advances in the study of planktonic cycling of matter and energy, placing a strong emphasis on the effects of eutrophication on these processes. This book covers a wide range of topics in the field, including:

• Nutrient limitation of phytoplankton growth
• Nutrient cycles in the planktonic food web
• DOM sources, composition, and uptake
• Resource limitation vs. shaping of the food web by grazing
• Spatio-temporal variability: coupling of physical and biological processes
• Processes controlling sinking losses from the pelagic system
• Planktonic food web modelling .
  The book should be of interest to everybody involved in planktonic ecosystem research, from the advanced student to the distinguished scientist. This volume brings to the reader the expertise of internationally renowned authors on the main issues of today's ecological plankton research.

Résumé
Proceedings of the International PELAG Symposium, August 26-30, 1996 in Helsinki, Finland

Contenu
Interactions of Top-Down and Bottom-Up Control in Planktonic Nitrogen Cycling; P.M. Glibert. Population Regulation and Role of Mesozooplankton in Shaping Marine Pelagic Food Webs; T. Kiørboe. Retention Versus Export Food Chains: Processes Controlling Sinking Loss from Marine Pelagic Systems; P. Wassmann. A Theoretical Approach to Structuring Mechanisms in the Pelagic Food Web; T.F. Thingstad. 30 Years Eutrophication in Shallow Brackish Waters - Lessons to be Learned; U. Schiewer. Relations Between Planktivorous Fish Abundance, Zooplankton and Phytoplankton in Three Lakes of Differing Productivity; J. Sarvala, et al. Planktonic Food Web in Marine Mesocosms in the Eastern Mediterranean: Bottom-Up or Top-Down Regulation? P. Pitta, et al. Coupling of Autotrophic and Heterotrophic Processes in an Estuarine Mixing Gradient (Pomeranian Bight, Southern Baltic Sea); G. Jost, F. Pollehne. Variability of Nutrient Limitation in the Archipelago Sea, SW Finland; T. Kirkkala, et al. Effects of Environmental Factors on the Phytoplankton Community in the Gulf of Finland - Unattended High Frequency Measurement and Multivariate Analyses; E. Rantajärvi, et al. On the Production, Elemental Composition (C, N, P) and Distribution of Photosynthetic Organic Matter in the Southern Black Sea; A. Yilmaz, et al. Elemental Composition of Seston and the Nutrient Dynamics in the Sea of Marmara; S.Ç. Polat, et al. Impact of Increased River Discharge on the Phytoplankton Community in the Outer Oslofjord, Norway; S. Kristiansen. Vertical Migration of Autotrophic Micro-Organisms During a Vernal Bloom at the Coastal Baltic Sea - Coexistence through Niche Separation; K. Olli, et al. Group-Specific Phytoplankton Biomass/Dissolved Carbohydrate Relationships in the Gulf ofTrieste (Northern Adriatic); S. Terzic,et al. The Use of Spectral Fluorescence Methods to Detect Changes in the Phytoplankton Community; J. Seppälä, M. Balode. The Budgets of Nitrogen and Phosphorus in Shallow Eutrophic Lake Võrtsjäarv (Estonia); P. Nõges, et al. Vertical and Seasonal Distributions of Micro-Organisms, Zooplankton and Phytoplankton in a Eutrophic Lake; A.-M. Ventelä, et al. Biochemical Composition of Particulate Organic Matter and Bacterial Dynamics at the Sediment Water Interface in a Mediterranean Seagrass System; R. Danovaro, et al. Development of Microbial Community During Skeletonema costatum Detritus Degradation; K. Künnis. Nutrient Composition, Microbial Biomass and Activity at the Air-Water Interface of Small Boreal Forest Lakes; U. Münster, et al. Seasonal and Spatial Distribution of Bacterial Production and Biomass Along a Salinity Gradient (Northern Adriatic Sea); A. Puddu, et al. Incorporation of Spatial Structure into the Analysis of Relationships Between Environment and Marine Microbiological Parameters; J. Truu, et al. Summer Biomass and Feeding Activity of Phagotrophic Mixotrophs in the Northwestern Black Sea; T. Bouvier, et al. Spatial Structure and Ecological Efficiency in the Summer Zooplankton of a Glacial Lake; G. Galkovskaya, V.V. Arapov. Nitrogen, Phosphorus and Daphnia Grazing in Controlling Phytoplankton Biomass and Composition &endash; An Experimental Study; H. Karjalainen, et al. In situ Grazing Rate and Diel Vertical Migration of Female Calanus euxinus in the Black Sea; S. Besiktepe, et al. Zooplankton-Phytoplankton Interactions: A Possible Explanation of the Seasonal Succession in the Kuriu Marios Lagoon; Z.R. Gasiunaite, I. Olenina. Closing Address: Perspectives on Basic and Applied, Freshwate