文章基本信息

标题：Turnover of postlarval bivalves in sediments of tidal flats in Königshafen (German Wadden sea)
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作者：W. Armonies
期刊名称：Helgoland Marine Research
印刷版ISSN：1438-3888
出版年度：1994
卷号：48
期号：2
页码：291-297
DOI：10.1007/BF02367042
出版社：BioMed Central
摘要：After larval settlement, juvenile bivalves may rapidly re-enter the water column and attain secondary dispersal by byssus-drifting. In order to estimate the quantitative importance of byssus-drifting, the abundance of drifters in the water column, their re-entry into the sediment, and their density in the ambient sediment were measured simultaneously over 3 months on a tidal flat in Königshafen near the Island of Sylt in the North Sea. Turnover of juvenile clamsMacoma balthica and cocklesCerastoderma edule was more than once per week in summer, showing strong short-term variability because of semi-lunar rhythms of drifting activity. While there is currently no evidence for active habitat selection in settlingM. balthica andC. edule larvae, it is suggested that habitat selection occurs following postlarval migrations.
关键词：Migration;Waste Water;Water Column;Water Management;Water Pollution