Production rates of Eurytemora affinis in the Elbe estuary, comparison of field and enclosure production estimates
Peitsch, A. (1995). Production rates of Eurytemora affinis in the Elbe estuary, comparison of field and enclosure production estimates, in: Heip, C.H.R. et al. Major biological processes in European tidal estuaries. Developments in Hydrobiology, 110: pp. 127-137 In: Heip, C.H.R.; Herman, P.M.J. (Ed.) (1995). Major biological processes in European tidal estuaries. Developments in Hydrobiology, 110. Kluwer Academic: Dordrecht. ISBN 978-0-7923-3699-0. VIII, 276 pp., more In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more Related to:Peitsch, A. (1995). Production rates of Eurytemora affinis in the Elbe estuary, comparison of field and enclosure production estimates. Hydrobiologia 311(1-3): 127-137. https://dx.doi.org/10.1007/BF00008576, more |
| Keywords | Availability > Food availability
Biological production > Secondary production
Body size
Comparative studies
Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine crustaceans
In situ measurements
Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls
Structures > Hydraulic structures > Barrages > Enclosures
Eurytemora affinis (Poppe, 1880) [WoRMS]
ANE, Germany, Elbe Estuary [Marine Regions]
Marine/Coastal |
| Abstract | Production rates of the calanoid copepod Eurytemora affinis were estimated from field studies in the Elbe estuary and from an enclosure experiment. As one basic parameter of production rates, the body length, was compared between both investigations. Most of the copepodid stages in the enclosure experiment reached a significant greater length than the copepodids in the estuary. The differences in length between copepods from the field and the experiment could mainly be explained by a four times higher chlorophyll-a level in the enclosure experiment. The better food supply also results in a higher individual growth rate for all instars in the enclosure experiment. Therefore the population of Eurytemora affinis in the Elbe estuary was regarded as food limited during certain times of the year, especially in late spring and summer.Maximum daily production rate in the enclosure experiment (40 µg dw l–1 d–1) was four times higher than in the estuary (12 µg dw l–1 d–1). The mean daily P:B ratio in the enclosure was 0.301 d–1 compared to 0.11 d–1 in the estuary. |
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