A Quantitative Study of the Influence of Tide Upon Populations of Salicornia Europea

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Abstract
A study of the density of stand of Salicornia in the estuary of the Dovey river (Wales) shows that the density is much greater in the regions submerged only by the spring tides than in the regions submerged by the neap tides. This is accounted for largely by a difference in mortality of the young seedlings in the 2 zones. The change of density is quite abrupt as an interval free from submergence of 2 or 3 days is sufficient for the seedlings to become so well established as not to be dragged out by the tide. Toward the upper limits of the spring tides the density again falls off due to invasion by Glyceria, which forms a sward beyond the reach of the spring tides.

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