V. V. Lidvanov, N. N. Zhigalova, and S. K. Kuderskiy
Atlantic Research Institute of Fisheries and Oceanography, ul. Dmitriya Donskogo 5, Kaliningrad, 236000 Russia
E-mail: hydrobio@atlant.baltnet.ru
Received January 27, 2009; in final form, June 30, 2009
Abstract—The analysis of the vertical distribution of the zooplankton and of the peculiarities of the specific,
biotopic, trophic, and spatial structures in relation to the hydrological features was performed on the basis of
the data on the vertical zooplankton sampling fulfilled at a transect along the coast of Morocco and Mauritania
over depths of 1000 m in the summer of 2004. The surveyed area is inhabited by five zooplankton complexes:
three surface and two interzonal ones associated with the water masses of different origin. The vertical bound-
ary between the southern and northern complexes corresponds to the southern boundary of the Senegal–Mau-
ritanian frontal zone, while the horizontal boundary between the surface and the interzonal complexes is mainly
at the depths of about 200 m, and its location is basically determined by the water’s vertical dynamics. The sur-
face and interzonal complexes of northern origin are involved in the formation of a highly productive zone in
the waters of Cape Blanc. The formation of this zone is not related to upwelling.
DOI: 10.1134/S0001437010030069
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