ISSN:
1432-1793
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The present paper is based on a 3-year field study of marine Cladocera in the waters off Gothenburg on the Swedish west coast. The group mainly occurred from May to September, when there was a temperature stratification of the waters. The dominant species, Evadne nordmanni Lovén, may occur in large numbers during the entire warm period, both in offshore and inshore waters. The species Podon leuckarti G.O. Sars, P. intermedius Lilljeborg, and Pleopis (=Podon) polyphemoides (Leuckart) occurred separately both in time and space. The occurrence of different species may primarily be regulated by abiotic factors, e.g. temperature and currents, but may also be modified by competition for food between closely related species. During the early summer, the populations of E. nordmanni and Podon leuckarti seem to be comprised of specimens brought in by the sea, while the estuarine species Pleopis polyphemoides seems to be more indigenous within the area.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00391516
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