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A study of a man-made freshwater reservoir in Eastern Flanders (Belgium), with special reference to the vertical migration of the zooplankton
Dumont, H.J. (1968). A study of a man-made freshwater reservoir in Eastern Flanders (Belgium), with special reference to the vertical migration of the zooplankton. Hydrobiologia 32(1-2): 97-130. hdl.handle.net/10.1007/BF00179542
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer
Peer reviewed article  

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  • Dumont, H.J.

Abstract
    A study is made of the vertical migrations of several zooplankters in a recent artificial freshwater reservoir in the lower part of Belgium. Two series of cyclical observations were made, the first one during summer stagnation (30 hours), the second one during autumn overturn (48 hours). In both cases numerous plankton collections were made at different depths and a number of physico-chemical features of the water, suspected to show a diurnal rhythm too, were determined (temperature, O2, pH, HCO inf3 sup- ). Using the statistical technique basically developed by Ricker, significant vertical migrations were found during the stratification period and for every species that was taken into consideration. During overturn, vertical migrations were much less evident and in some cases even doubtful. The causality of this phenomenon is briefly discussed.

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