Visual evidence of reduced seafloor conditions and indications of a cold-seep ecosystem from the Hatton–Rockall basin (NE Atlantic)
Visual evidence of reduced seafloor conditions and indications of a cold-seep ecosystem from the Hatton–Rockall basin (NE Atlantic)
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海底条件恶化的视觉证据以及哈顿-罗科尔盆地（大西洋东北部）冷泉生态系统的迹象
DOI：
10.1017/s0025315418000115
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发表时间：
2018
影响因子：
1.2
通讯作者：
Thomas D. Linley
中科院分区：
文献类型：
--
作者：
F. Neat;A. Jamieson;H. Stewart;B. Narayanaswamy;N. Collie;M. Stewart;Thomas D. Linley
来自拖曳式摄像机系统的高清晰度视频被用来描述位于哈顿-罗科尔盆地罗科尔岸西缘的狭长洼地内的深海底栖生境。在深度大于1190米，一个广泛的区域（10公里长，1.5公里宽），似乎是减少沉积物，细菌垫和絮状物表明可能的冷渗漏栖息地。在凸起的细长特征旁边观察到富含沉积物的流体羽流，这些特征使原本平坦的海底地形起伏。在凹陷的最深处（1215米），观察到密集的絮状物悬浮在水柱中，在模糊海底的地方。离开细菌垫后，生境迅速转变为以管栖多毛类蠕虫为主的沉积物，然后转变为水深较典型的深海沉积物生境（缓坡地区的海绵和穴居巨型动物，陡坡地区的珊瑚园）。
High definition video from a towed camera system was used to describe the deep-sea benthic habitats within an elongate depression located at the western margin of Rockall Bank in the Hatton–Rockall Basin. At depths greater than 1190 m, an extensive area (10 km long by 1.5 km wide) of what appeared to be reduced sediments, bacterial mats and flocculent matter indicated possible cold-seep habitat. Plumes of sediment-rich fluid were observed alongside raised elongate features that gave topographic relief to the otherwise flat seafloor. In the deepest section of the depression (1215 m) dense flocculent matter was observed suspended in the water column, in places obscuring the seabed. Away from the bacterial mats, the habitat changed rapidly to sediments dominated by tube-dwelling polychaete worms and then to deep-sea sedimentary habitats more typical for the water depth (sponges and burrowing megafauna in areas of gentle slopes, and coral gardens on steeper slopes).