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Animal behaviour and water movement as co-determinants of plankton distribution in a tidal system
Jacobs, J. (1968). Animal behaviour and water movement as co-determinants of plankton distribution in a tidal system. Sarsia 34(1): 355-370. https://dx.doi.org/10.1080/00364827.1968.10413397
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827; e-ISSN 1503-1128, more
Also appears in:
Brattström, H.; Matthews, J.B.L. (Ed.) (1968). The Importance of Water Movements for Biology and Distribution of Marine Organisms: 2nd European Symposium on Marine Biology, Bergen 24-28 August 1967. European Marine Biology Symposia, 2. Sarsia, 34. 398 pp., more
Peer reviewed article  

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Keywords
    Aquatic communities > Plankton
    Behaviour
    Distribution
    Environments > Aquatic environment > Marine environment > Intertidal environment
    Motion > Water motion
    Marine/Coastal

Author  Top 
  • Jacobs, J.

Abstract
    In tidal sounds and rivers along the Atlantic coast of the southern U.S.A., pelagic calanoid copepods exhibit striking patterns of horizontal distribution which oscillate according to the rhythm of the tides. Acartia tonsa has a marked density maximum in the middle of the tidal Duplin River, Georgia, at low water, although there are no appreciable gradients of temperature, salinity, or food. During flood tide, the maximum is shifted to the upper end of the river. The distribution is shown to be the result of the combined action of a) the vertical migration of the copepods, b) the asymmetrical tidal flooding and draining of the marsh, and c) the upstream increase of the ratio of water in the marsh to water in the river at high water.

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