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Studies on phytoplankton distribution and primary production in the western English Channel in 1980 and 1981
Jordan, M.B.; Joint, I.R. (1984). Studies on phytoplankton distribution and primary production in the western English Channel in 1980 and 1981. Cont. Shelf Res. 3(1): 25-34
In: Continental Shelf Research. Pergamon Press: Oxford; New York. ISSN 0278-4343, more
Peer reviewed article  

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Keywords
    Algal blooms; Chlorophylls; Distribution; Phytoplankton; Primary production; Gyrodinium aureolum E.M.Hulburt, 1957 [WoRMS]; Marine

Authors  Top 
  • Jordan, M.B.
  • Joint, I.R.

Abstract
    The distribution of chlorophyll on a transect of the English Channel was measured during 1980 and 1981. In both years, high concentrations of chlorophyll a were measured in mid-channel in July and August and this was due to a bloom of Gyrodinium aureolum. At a near-shore station close to Plymouth, regular measurements of water transparency and primary production were made during 1981. Values of diffuse attenuation coefficient increased in the spring with increasing chlorophyll concentration; this was followed by a period of low attenuation coefficients when chlorophyll maxima developed on the thermocline. The attenuation coefficient was greatly increased in late summer as the result of a bloom of G. Aureolum. The high cell density resulted in self-limitation and specific rates of photosynthetic carbon fixation were low during the bloom.

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