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首页> 外文期刊>ICES Journal of Marine Science >The biological impact of overflowing sands around a marine aggregate extraction site: Dieppe (eastern English Channel)
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The biological impact of overflowing sands around a marine aggregate extraction site: Dieppe (eastern English Channel)

机译：海洋集料开采场周围的溢砂对生物的影响：Dieppe（东英吉利海峡）

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The study investigates the physical impact of sediment deposition associated with aggregate dredging at a site off Dieppe, and the consequences for benthic fauna. Sampling stations were sited across potential zones of impact classified as high, moderate, and low deposition, depending on their proximity to dredging activities and their position relative to the net sediment transport route. Samples were also taken west of the dredge site outside the zone of likely impact (no deposition). A strong gradient was observed from the sediments dominated by fine sands in the high and moderate deposition zones, through to coarse sands and gravels in the low and no deposition zones. The benthic fauna sampled from the deposits of fine sand in the high and moderate deposition zones were sparse compared with the coarser deposits sampled from the low and no deposition zones. There was a strong correspondence between the distribution of different sediment fractions and the associated benthic fauna, with a weighted Spearman rank correlation of 0.638, higher than reported in related studies. This suggests that in deposition areas such as this, biological interactions play a less important role in shaping communities than the changes in the physical environment, which may have a greater impact on the biological communities.
机译：这项研究调查了沉积物的物理影响以及在Dieppe以外的地点进行的疏aggregate骨料，以及对底栖动物的影响。采样站位于潜在的影响区，分为潜在的高，中和低沉积区，这取决于它们与挖泥活动的接近程度以及相对于净沉积物输送路线的位置。还从可能影响区域（无沉积物）之外的挖泥机地点以西取样。从高沉积区和中等沉积区的以细砂为主的沉积物，到低沉积区和无沉积区的粗砂和砾石，观察到强烈的梯度。与从低沉积区和无沉积区采集的较粗的沉积物相比，从高沉积区和中等沉积区的细砂沉积物采集的底栖动物稀疏。在不同沉积物部分的分布与相关底栖动物之间有很强的对应关系，加权斯皮尔曼等级相关系数为0.638，高于相关研究的报道。这表明，在诸如此类的沉积区域中，生物相互作用在塑造群落中的作用不如物理环境的变化重要，而后者可能会对生物群落产生更大的影响。

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