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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. (Ed.) The Oosterschelde Estuary (The Netherlands): a case-study of a changing ecosystem. Hydrobiologia, 97: pp. 219-234
In: Nienhuis, P.H.; Smaal, A.C. (Ed.) (1994). The Oosterschelde Estuary (The Netherlands): a case-study of a changing ecosystem. Reprinted from Hydrobiologia, vols 282/283. Hydrobiologia, 97. Kluwer Academic: Dordrecht. 597 pp., more
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

Also published as
  • 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 282-283: 219-234, more

Available in Authors 

Keywords
    Exposure; Exposure; Starvation; Stress; Stress; Survival; ANE, Netherlands, Oosterschelde [Marine Regions]; Marine; Brackish water

Authors  Top 
  • Hummel, H., more
  • Fortuin, A.W.
  • Bogaards, R.H.
  • Meijboom, A., more
  • de Wolf, L.

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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