The effects of prolonged emersion and submersion by tidal manipulation on marine macrobenthos
Hummel, H.; Fortuin, A.W.; Bogaards, R.H.; Meijboom, A.; de Wolf, L. (1994). The effects of prolonged emersion and submersion by tidal manipulation on marine macrobenthos, in: Nienhuis, P.H. et al. The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97: pp. 219-234. https://dx.doi.org/10.1007/978-94-011-1174-4_17 In: Nienhuis, P.H.; Smaal, A.C. (Ed.) (1994). The Oosterschelde Estuary (The Netherlands): A case-study of a changing ecosystem. Developments in Hydrobiology, 97. Springer Science+Business Media: Dordrecht. ISBN 978-94-010-4512-4; e-ISBN 978-94-011-1174-4. XXIV, 597 pp. https://dx.doi.org/10.1007/978-94-011-1174-4, more In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more Related to:Hummel, H.; Fortuin, A.W.; Bogaards, R.H.; Meijboom, A.; de Wolf, L. (1994). The effects of prolonged emersion and submersion by tidal manipulation on marine macrobenthos. Hydrobiologia 282: 219-234. https://dx.doi.org/10.1007/BF00024632, more |
| Keywords | Exposure
Processes > Exposure
Starvation
Stress
Stress
Survival
ANE, Netherlands, Oosterschelde [Marine Regions]
Marine/Coastal; Brackish water |
| Authors | | Top | - Hummel, H., more
- Fortuin, A.W.
- Bogaards, R.H.
| - Meijboom, A., more
- de Wolf, L.
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| Abstract | Effects of tidal manipulation, resulting in prolonged periods of emersion and submersion or in protracted tidal cycles, on estuarine benthic animals are reviewed. Prolonged submersion periods did not show effects on mortality of most benthic animals tested, with the exception of the crumb-of-bread sponge Halichondrea panicea, which, at low water-flow rates, was covered with a layer of bacteria and subsequently died. Protracted low-water periods of 18 hours during several weeks hardly caused any mortality. However, protracted low-water periods of 30 hours during some weeks or emersion during several days caused a strong increase in mortality, depending on: the duration of emersion, temperature, condition of the animals, species and age. At temperatures below -1°C and above 24°C mortality was generally high. Animals with a low glycogen content were more sensitive to emersion than those with a high content. Species with a shell and those that are relatively big were less sensitive than those without a shell or of small size. The reproductive cycle of benthic animals could be delayed or accelerated by both emersion and submersion. |
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