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Article
An alternative estimation procedure of a clay-clay type of vintage model: The case of the Netherlands, 1959–1973
In this paper the Den Hartog-Tjan estimation procedure for a fixed coefficients vintage model of the Dutch economy was challenged. An alternative procedure has been developed, which is not subject to the objec...
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Article
Diurnal vertical migration of an estuarine cladoceran, Podon polyphemoides, in the Chesapeake Bay
Populations of the marine cladoceran Podon polyphemoides (Leuckart) in the Chesapeake Bay (USA) zooplankton typically occur in large patches, extending the length of the estuary. These patches are characterized b...
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Article
Distribution of the cladoceran Podon polyphemoides in the Chesapeake Bay
The distribution of the cladoceran Podon polyphemoides (Leuckart) in the Chesapeake Bay (USA) estuarine system was determined by a quantitative pump sampling method, and the patterns of abundance were correlated ...