摘要: At a sandy beach site on the island of Sylt in North Sea, interstitial micro- and meiofauna has been studied by several investigators since 1960s, total 652 species living between tide marks reported. Most effort was devoted to free-living Plathelminthes ('Turbellaria'), which accounted for 32% all species, followed Nematoda (27%), Ciliata (11%, smallest size-groups not included), Copepoda (10%), Gastrotricha (7%), 9 other major taxa. The ratio macrofauna fauna about 1:25 entire beach. investigated shore consists steep upper slope from high mid line (13 m), gentle lower low (100 m horizontal distance). While gradually increased number face (8 species) towards (23 species), this case diverse fauna. It attained broad maximum richness at 10 wide terrace just below face. Here an optimal balance may exist organic supply, oxygen water retention. Three hundred fifty per meter interval transect were recorded. From there declined (230 abruptly (170 species). Similarity analysis indicates threshold composition bend slope, is above level. For marine provides center diversity.
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