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Regional climate change and harmful algal blooms in the northeast Atlantic
Edwards, M.; Johns, D.G.; Leterme, S.C.; Svendsen, E.; Richardson, A.J. (2006). Regional climate change and harmful algal blooms in the northeast Atlantic. Limnol. Oceanogr. 52(1): 820-829
In: Limnology and Oceanography. American Society of Limnology and Oceanography: Waco, Tex., etc. ISSN 0024-3590; e-ISSN 1939-5590, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    A, North Atlantic
    Algal blooms
    ANE, Irish Sea
    ANE, North Sea
    ANE, Skagerrak
    Aquatic communities > Plankton > Phytoplankton
    Atmospheric forcing
    Climatic changes
    Environmental factors
    Norway
    Ocean-atmosphere system
    Oscillations
    Properties > Biological properties > Vulnerability
    Spatial variations
    Ierse Zee [Marine Regions]; Noordzee [Marine Regions]; North Atlantic Ocean [Marine Regions]; Norway [Marine Regions]; Skagerrak [Marine Regions]
    Marien/Kust
Auteurs  Top 
  • Edwards, M., meer
  • Johns, D.G., meer
  • Leterme, S.C.
  • Svendsen, E.
  • Richardson, A.J., meer
Abstract
    We investigated long-term spatial variability in a number of Harmful Algal Blooms (HABs) in the northeast Atlantic and North Sea using data from the Continuous Plankton Recorder. Over the last four decades some dinoflagellate taxa showed pronounced variation in the south and east of the North Sea with the most significant increases being restricted to the adjacent waters off Norway. There was also a general decrease along the eastern coast of the United Kingdom. The most prominent feature in the inter-annual bloom frequencies over the last four decades was the anomalously high values recorded in the late 1980s in the northern and central North Sea areas. The only meso-scale area in the northeast Atlantic to show a significant increase in bloom formation over the last decade was the Norwegian coastal region. The changing spatial patterns of HAB taxa and the frequency of bloom formation are discussed in relation to regional climate change, in particular changes in temperature, salinity, and the North Atlantic Oscillation (NAO). Areas highly vulnerable to the effects of regional climate change on HABs are Norwegian coastal waters and the Skagerrak. Other vulnerable areas include Danish coastal waters, and to a lesser extent the German and Dutch Bight and the northern Irish Sea. Quite apart from eutrophication, our results give a preview of what might happen to for certain HAB genera under changing climatic conditions in temperate environments, and their responses to variability of climate oscillations such as the NAO.
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