Titlebook: Sustainable Increase of Marine Harvesting: Fundamental Mechanisms and New Concepts; Proceedings of the 1 Olav Vadstein,Yngvar Olsen Confere

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Pelagic food web configurations at different levels of nutrient richness and their implications for s of pelagic food webs are proposed for three different types of marine nutrient regimes: (1) upwelling systems, (2) oligotrophic oceanic systems, (3) eutrophicated coastal systems. Up-welling systems are characterised by high levels of plant nutrients and high ratios of Si to N and R. Phytoplankton

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抛射物

Chronic

The influence of turbidity on growth and survival of fish larvae: a numerical analysisrease the production of these stocks by restocking of juveniles have generally failed. Here, we analyse how enhanced concentrations of phytoplankton and zooplankton affect the survival of fish larvae during their early life stages. The analysis is developed for larvae feeding on copepod eggs and nau

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EXALT

European mussel cultivation along the Atlantic coast: production status, problems and perspectivesrlands and Denmark, while the Mediterranean production predominantly comes from Italy. Production in these traditional areas have been stabilised since the 1970s, and the share of Europe in the world production has decreased due to increased production outside Europe. The following factors are impor

Malaise

Effect of nutrient supply on growth of blue mussels (,) in a landlocked bays were added to increase the primary production. Nutrients (N:Si:P) were added daily from May to October in 1998 (molar ratio 15:5:4.1) and 1999 (molar ratio 16:8:1). The doses of nutrients correspond to 0.4 and 0.8 .g P l. day. in 1998 and 1999 respectively. The growth of blue mussels (.) in 1997 w

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Response on scallop culture to enhanced nutrient supply by experimental fertilisation of a landlockeass, and on growth of scallops (.) was studied in 1997–1999. Nitrogen, silicon and phosphorous (N:Si:P = 16:8:1, atomic) were added daily between May and October in 1998 at a level of 0.4 mg P m. day.. The concentration of nutrient addition was doubled in 1999 during the same period. High addition o

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Coastal upwelling, primary production and mussel growth in the Rías Baixas of Galicia from 3337 mussel rafts. Mussel production in this region is the highest in Europe and one of the most intensive in the world, giving employment to 9000 people directly and 20 000 indirectly. The causes of this high mussel production are discussed through the analysis of published and some unpublish