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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Assessment Of Ecosystem Function Following Marine Aggregate Dredging
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Assessment Of Ecosystem Function Following Marine Aggregate Dredging

机译：海洋疏Dr后的生态系统功能评估

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A number of indices designed to assess ecosystem function were applied to an existing benthic macrofaunal dataset collected following recent marine aggregate extraction activity at the Hastings Shingle Bank (UK). The objective of the study was to assess the use of these different functional metrics, some incorporating biological traits analysis, to investigate the rate of recovery in ecosystem function after dredging impact. All of the indices tested behaved in a broadly similar fashion following the aggregate extraction event, although some suggested faster rates of functional recovery than others. All indicated that the disturbed area of seabed was capable of full recovery given enough time. It is considered that this outcome may be because the physical nature of the seabed was unlikely to have been permanently altered by dredging for aggregate by the method used. This is not always the case following aggregate extraction and depends on the dredging protocol used (e.g., sediment screening). The indices tested (some applied for the first time to benthic macrofaunal data) were considered to be complementary to traditional environmental assessment metrics and each might be used under different circumstances.
机译：在最近的海斯廷斯碎瓦银行（英国）进行了海洋集料开采活动之后，将许多旨在评估生态系统功能的指标应用于现有的底栖大型动物数据集。这项研究的目的是评估这些不同的功能指标的使用，其中一些指标结合了生物学特征分析，以调查疏impact影响后生态系统功能的恢复速度。聚集提取事件后，所有测试的指标表现出大致相似的方式，尽管有些建议的功能恢复速率比其他指标更快。所有人都表示，只要有足够的时间，受干扰的海底地区就能完全恢复。人们认为，这种结果可能是因为通过所采用的方法疏aggregate骨料不可能永久改变海床的物理性质。骨料提取后并非总是如此，并且取决于所使用的疏通方案（例如，泥沙筛查）。被测指标（有些是首次用于底栖大型动物数据）被认为是对传统环境评估指标的补充，并且可以在不同情况下使用。

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