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首页> 外文期刊>Oceanologia >Zonation of macrofauna across sandy beaches and surf zones along the Dutch coast
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Zonation of macrofauna across sandy beaches and surf zones along the Dutch coast

机译：大型动物区划跨荷兰海岸的沙滩和冲浪区

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On nine beaches and two transects in the surf zone along the Dutch coast the presence of benthic macrofauna was studied in relation to basic abiotic characteristics. According to Short's classification system, Dutch beaches are mesotidal and dissipative (Ω = 8.6), and the RTR is low (1.52-1.27), which means that they are not tide-dominated. BSI ranged from 1.4 to 1.1 for the northern and western Dutch coasts respectively and had an overall value of 1.2. The rates of exposure of the beaches varied between 8 and 12, and are therefore regarded as sheltered to moderately exposed. The Dutch beaches display a geographical trend in beach types. Those of the Wadden Sea islands in the northern part of the Netherlands are dissipative, flat, fine-grained, and host high densities of many species of benthic macrofauna. The beaches along the western Dutch coast are less dissipative, steeper, with a higher mean grain size; the species diversity and abundance there are lower. Species diversity and abundance on the beaches increase from the high- to the low-water line. The maximum number of species was found between 0 and -1 m relative to the mean tidal level. The abundance peaks just above the mean tidal level, while the biomass reaches a maximum at the mean tidal level. Species diversity and abundance are low in the surf zone, but increase towards deeper water. Species numbers are high and the abundance is very high in the trough between the two bars. The relation between the diversity and abundance of macrobenthic species on the one hand, and the sediment composition, water column depth, and position between the bars on the other show a clear pattern of zonation for the beach, surf zone and near-shore: (1) a supralittoral zone with insects and air-breathing crustaceans, (2) a midshore zone, with intertidal species, (3) a lower shore zone, whose species extend into the shallow surf zone, and (4) a zone of sublittoral fauna in the trough between the two breaker bars within the surf zone.
机译：在荷兰海岸冲浪区的九个海滩和两个样带上，研究了底栖大型动物的存在与基本非生物特征的关系。根据Short的分类系统，荷兰海滩是中性的和耗散的（Ω= 8.6），并且RTR低（1.52-1.27），这意味着它们不是潮汐主导的海滩。荷兰北部和西部沿海的BSI分别为1.4至1.1，总值为1.2。海滩的暴露率在8到12之间变化，因此被认为可以适度暴露。荷兰的海滩在海滩类型上显示出地理趋势。荷兰北部瓦登海群岛的那些岛是耗散的，平坦的，细粒的，并且拥有许多底栖大型动物的高密度。荷兰西部沿海的海滩耗散性较小，较陡峭，平均粒度较大。那里的物种多样性和丰度较低。海滩上的物种多样性和丰富度从高水位线到低水位线增加。相对于平均潮汐水平，发现的最大物种数量在0至-1 m之间。丰度在平均潮汐水平之上达到峰值，而生物量在平均潮汐水平达到最大值。冲浪区的物种多样性和丰富度较低，但向深水区增加。两条柱之间的谷中的物种数量很高，并且丰度很高。一方面，大型底栖生物的多样性和丰度与沉积物组成，水柱深度以及条之间的位置之间的关系在海滩，冲浪区和近岸地区显示出清晰的分区模式：（ 1）沿岸带有昆虫和气息甲壳类动物;（2）沿岸带，有潮间带物种;（3）沿岸带，其物种延伸到浅海冲浪带;（4）沿岸动物区带在冲浪区内两个断路器之间的槽中。

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