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首页> 外文期刊>ICES Journal of Marine Science >Macrobenthic resources of the shallow soft-bottom sediments in the eastern English Channel and southern North Sea
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Macrobenthic resources of the shallow soft-bottom sediments in the eastern English Channel and southern North Sea

机译：英吉利海峡东部和北海南部浅层软底沉积物的大型底栖资源

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摘要

To obtain a baseline for future comparisons and to assist in the conservation of marine biodiversity, the distribution patterns and faunal composition of shallow (0―15m depth) macrobenthic assemblages were studied along the French coast of the eastern English Channel and southern North Sea from two surveys conducted in 1998 and 2000. A total of 227 sites were sampled from Cap d'Ailly to the Belgian border, from which a total of 167 species were collected. Species richness, abundance and biomass were all increased in the vicinity of outflows from harbours, major bays and estuaries. Three principal macrobenthic assemblages were defined: (ⅰ) an Ophelia borealis medium to fine sand assemblage; (ⅱ) a muddy heterogeneous sediment assemblage; and (ⅲ) an Abra alba muddy fine sand assemblage. The Abra alba assemblage covered approximately 80% of the seabed in the survey area. Sediment characteristics and a latitudinal gradient accounted for a significant proportion of the observed variability in assemblage distribution patterns. In the eastern English Channel, the distribution patterns of species diversity, abundance and biomass values were most continuous, whereas in the southern North Sea a more heterogenous distribution was observed.
机译：为了获得将来进行比较的基准并帮助保护海洋生物多样性，研究了从东英吉利海峡的法国海岸和北海南部的两个浅海（0-15m深度）大型底栖动物的分布模式和动物组成。于1998年和2000年进行了调查。从爱德角（Cap d'Ailly）到比利时边境共采样了227个地点，共收集了167种。在港口，主要海湾和河口流出的附近，物种的丰富度，丰富度和生物量都增加了。定义了三种主要的大型底栖动物组合：（ⅰ）中型至细沙组合的Ophelia northalis； （ⅱ）泥泞的非均质沉积物组合； （ⅲ）Abra alba泥泞细沙组合。 Abra alba组合覆盖了调查区域中约80％的海床。沉积物特征和纬度梯度占组合分布模式中观察到的变化的很大一部分。在东部英吉利海峡，物种多样性，丰度和生物量值的分布模式最为连续，而在北海南部，观测到的分布更为不均匀。

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