In-situ ecological interactions with a deployed tidal energy device; an observational pilot study
In-situ ecological interactions with a deployed tidal energy device; an observational pilot study
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DOI：
10.1016/j.ocecoaman.2014.06.008
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发表时间：
2014-10-01
影响因子：
4.6
通讯作者：
Orme, C. David L.
中科院分区：
文献类型：
--
作者：
Broadhurst, Melanie;Barr, Sue;Orme, C. David L.
目前，很少有研究考虑到物种相互作用与关键环境变量之间的关系，以及近海海洋可再生能源技术的影响。视频画面和ADCP测量技术，检查部署的潮汐能装置附近的鱼类和流速的存在。在2009年和2010年夏季的几个月里，在15天的时间段内进行了试点试验。在每个试验日，每小时从录像中随机拍摄五张照片，以估计物种的存在和丰度。平均丰度，然后比较小时和天的时间尺度和它们的关系与流速率，为两个years.Pollack，Pollachius pollachius被观察到聚集在浅滩临时周围部署的设备，在2009年比2010年观察到更大的丰度。调查中未发现其他物种。波拉克丰度显着相关的两个试验年的流速。丰度增加与这两年的流速降低有关，浅滩可能会使用该设备进行临时保护或喂养策略。对潮汐速度的响应也因年份而异，2009年的丰度范围为0至1.2米/秒，2010年的丰度范围为0.5至1.7米/秒。总的来说，这项初步研究概述了一个潜在的有用的方法来调查物种的反应与新的人类活动在海洋环境中。(C)2014爱思唯尔有限公司版权所有。
At present, few studies exist that consider the relationship between species interactions and key environmental variables, with the added influence of offshore marine renewable energy technologies. Video footage and ADCP survey techniques were used, to examine the presence of fish and velocity flow rates within the vicinity of a deployed tidal energy device. Pilot trials were conducted across 15 day temporal periods, during the summer months of 2009 and 2010. Five random photographic stills were taken from the video footage at hourly intervals throughout each trial day to estimate species presence and abundance. Mean abundance then was compared between hour and day temporal scales and their relationship with velocity rate, for both years.Pollack, Pollachius pollachius was observed aggregating in shoals temporarily round the deployed device, with larger abundance observed in 2009 than 2010. No other species were identified from the surveys. Pollack abundance was significantly associated to velocity rate for both trial years. Increased abundance was related to a reduction in velocity rate for both years, with shoals potentially using the device for temporary protection or feeding strategies. Responses to tidal velocity also differed between years, with 2009 abundances ranging from 0 to 1.2 m/s and 2010 abundances between 0.5 and 1.7 m/s. Overall this preliminary study outlined a potentially useful approach to investigate species responses with new anthropogenic activities in the marine environment. (C) 2014 Elsevier Ltd. All rights reserved.