Estimation of new production in the North Sea: consequences for temporal and spatial variability of phytoplankton

Katherine Richardson, Flemming Bo Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review


    By coupling knowledge of oceanographic processes and phytoplankton responses to light and nutrient availability, we estimate a total potential new (sensu Dugdale and Goering,1967) production for the North Sea of approximately 15.6 million tons C per year. In a typical year, about 40% of this production will be associated with the spring bloom in the surface waters of the seasonally stratified (central and northern) North Sea. About 40% is predicted to occur in the coastal waters while the remaining new production is predicted to take place in sub-surface chlorophyll peaks occuring in association with fronts in the North Sea during summer month. By considering the inter-annual variation in heat, wind and nutrient availability (light and tidal energy input are treated as non-varying from year to year), the inter-annual variability in the new production occuring in these different regions is estimated. The analysis indicates that new production in the coastal waters may have increased by about 25% in recent decades.
    Original languageEnglish
    JournalICES Journal of Marine Science
    Pages (from-to)574-580
    Publication statusPublished - 1998
    EventICES Symposium - Kiel, Germany
    Duration: 1 Jan 1997 → …


    ConferenceICES Symposium
    CityKiel, Germany
    Period01/01/1997 → …

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