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首页> 外文期刊>Marine ecology progress series >Effects of physical disturbance on the cold-water megafaunal communities of the Faroe-Shetland Channel
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Effects of physical disturbance on the cold-water megafaunal communities of the Faroe-Shetland Channel

机译：物理干扰对法罗-设得兰群岛通道冷水大型动物群落的影响

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摘要

The response of a deep, cold-water benthic community to physical disturbance from offshore drilling was investigated using Remotely Operated Vehicle (ROV) video in the Faroe-Shetland Channel. This study presents a novel method for characterising changes in the ecosystem function of deep-water benthic megafaunal communities in response to physical disturbance. Ecosystem function is investigated using a range of community parameters, particularly abundance and diversity. High levels of physical disturbance, characterised by smothering of the seabed within a radius of 50 to 120 m around the drilling site, resulted in significant but variable reductions in megafaunal abundance (up to 92.3%). Reductions in diversity, particularly in species richness, were apparent between disturbed (Mao Tao estimated species richness of ES_((500)) = 12.9) and undisturbed areas (ES_((500)) = 20.6). The implications of selective removal of taxa on ecosystem function and recovery are discussed. Low level disturbance had comparatively little effect on the megafaunal communities; the effects varied in nature depending on motility and functional group (e.g. motile scavenger abundances were maximal at intermediate distances from disturbance). We conclude by comparing the functioning of the ecosystem under different regimes of disturbance and discuss implications for recovery of disturbed deep-sea habitats.
机译：在法罗-设得兰群岛海峡使用遥控车辆（ROV）视频，研究了深水底栖生物群落对海上钻井造成的物理干扰的响应。这项研究提出了一种新的方法来表征深水底栖大型动物群落对生态系统干扰的生态系统功能的变化。使用一系列群落参数，尤其是丰度和多样性来研究生态系统功能。高水平的物理扰动，其特征是在钻探地点周围50到120 m的半径内窒息了海床，导致巨型动物的丰度显着但可变地降低（高达92.3％）。在受干扰的地区（毛涛估计的ES _（（500）= 12.9）和未受干扰的地区（ES _（（500））= 20.6）之间，多样性的减少尤其是物种丰富度的降低是显而易见的。讨论了有选择地去除分类单元对生态系统功能和恢复的影响。低水平干扰对巨型动物群落影响相对较小；影响的性质因运动能力和功能组的不同而不同（例如，在距干扰的中间距离处，运动型清除剂的丰度最大）。我们通过比较不同扰动机制下生态系统的功能来得出结论，并讨论了对受扰深海生境的恢复的意义。

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