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Plankton communities of the South Atlantic Ocean anticyclonic gyre = Communautés planctoniques du tourbillon anticyclonique de l’Atlantique Sud
Piontkovski, S.A.; Landry, M.R.; Finenko, Z.Z.; Kovalev, A.V.; Williams, R.; Gallienne, C.P.; Mishonov, A.V.; Skryabin, V.A.; Tokarev, Y.N.; Nikolsky, V.N. (2003). Plankton communities of the South Atlantic Ocean anticyclonic gyre = Communautés planctoniques du tourbillon anticyclonique de l’Atlantique Sud. Oceanol. Acta 26: 255-268
In: Oceanologica Acta. Elsevier/Gauthier-Villars: Montreuil. ISSN 0399-1784; e-ISSN 1878-4143
Peer reviewed article  

Available in  Authors 

Keywords
    Aquatic communities > Plankton > Zooplankton
    Luminescence > Bioluminescence
    Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls
    AS, South Atlantic [Marine Regions]
    Marine/Coastal

Authors  Top 
  • Piontkovski, S.A., more
  • Landry, M.R.
  • Finenko, Z.Z.
  • Kovalev, A.V.
  • Williams, R.
  • Gallienne, C.P.
  • Mishonov, A.V.
  • Skryabin, V.A.
  • Tokarev, Y.N., more
  • Nikolsky, V.N.

Abstract
    Data collected during cruises of the Former Soviet Union (in 1963-1989) and the British Atlantic meridional transect program (in 1995-1999) were used to analyse macroscale patterns in phyto- and zooplankton biomass, size structure, species diversity, chlorophyll a, and plankton bioluminescence in the macroscale anticyclonic gyre of the South Atlantic Ocean. The spatial pattern of bioluminescence intensity was in good agreement with that of remotely sensed (CZCS) chlorophyll a, phosphate, salinity, and copepod species diversity index distributions especially in terms of geographic inclinations of the isolines, both associated with the north-westward pattern off the South equatorial current. Among the 416 copepod species recorded in samples, 51 species were noted throughout the whole gyre. On the other hand, there were a number of species found only in one of the currents. The mesozooplankton biomass size spectra (calculated in carbon units), exhibited a fairly stable slope of the curve from the eastern periphery of the gyre to its centre. The British Atlantic meridional transect program meridional transect through the western part of the gyre showed mesozooplankton size spectra in greater detail between the equator and 50° S. Although the spectra change slowly along the transect as far as 36° S, there is a general trend toward increasing slopes from the equatorial region to the oligotrophic central gyre. The calculated phyto-to-zooplankton ratio indicated that for the tropical anticyclonic gyres, the mesozooplankton carbon biomass could be represented as the exponential function of the phytoplankton carbon.

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