Gravel seeding - A suitable technique for restoring the seabed following marine aggregate dredging?
Gravel seeding - A suitable technique for restoring the seabed following marine aggregate dredging?
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DOI：
10.1016/j.ecss.2010.10.011
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发表时间：
2011-01-01
影响因子：
2.8
通讯作者：
Barry, Jon
中科院分区：
文献类型：
--
作者：
Cooper, Keith;Ware, Suzanne;Barry, Jon
恢复近海海洋生境是一个相对较新的概念，欧洲联盟的尝试主要是出于各种战略指示的要求。在这个实验中，我们调查砾石播种的实用性和有效性，使用商业骨料疏浚船，以重建砾石栖息地。实验设计包括一个处理和控制现场，都在一个区域内的历史疏浚的特点是覆盖层的沙子，和砾石为主的参考网站。在处理场地内以砾石为主的4444 m（3）沉积物沉积前2个月，以及沉积后0、12和22个月，使用声学、摄像机和抓斗技术对所有场地进行了调查。虽然财政和实际的限制复制的治疗，以一个地区，因此排除了强有力的统计结论，我们的研究结果表明，该技术是实际可行的，并成功地返回的物理和生物属性在治疗现场的状态更具代表性的砾石基质在更广泛的，未受影响的环境。皇冠版权所有（C）2010由爱思唯尔有限公司出版。保留所有权利。
Restoration of offshore marine habitats is a relatively new concept, with attempts in the European Union being largely instigated by requirements of various strategic directives. In this experiment, we investigate the practicality and effectiveness of gravel seeding, using a commercial aggregate dredging vessel, in order to recreate a gravel habitat. The experimental design consisted of a Treatment and Control site, both within an area of historic dredging characterised by an overburden of sand, and a gravel dominated Reference site. All sites were surveyed, using a combination of acoustic, camera and grab techniques, 2 months before, and then at 0, 12 and 22 months after the deposition of 4444 m(3) of gravel dominated sediments within the Treatment site. Although financial and practical constraints limited replication of the Treatment to one area, and so precluded strong statistical conclusions, our results suggested that the technique was both practically feasible, and successful in terms of returning the physical and biological attributes at the Treatment site to a state more representative of gravelly substrata in the wider, un-impacted environment. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.