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In-situ ecological interactions with a deployed tidal energy device; an observational pilot study

机译：与部署的潮汐能设备的原位生态相互作用；观察性试验研究

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摘要

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 anthropoeenic activities in the marine environment.
机译：目前，很少有研究考虑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。使用录像和ADCP调查技术来检查部署的潮汐能设备附近鱼的存在和流速。在2009年和2010年夏季，在15天的时间段内进行了试验性试验。在每个试验日中，以小时为间隔从视频录像中拍摄了五张随机照片静止图像，以估计物种的存在和丰度。然后比较了这两个年份的时空尺度和时空尺度之间的平均丰度及其与速度的关系。 Pollack，Pollachius Polachius被观察到聚集在部署装置周围的浅滩中，2009年的丰度比2010年大。调查中未发现其他物种。在两个试验年中，波拉克的丰度与运动速度显着相关。丰度的增加与这两年速度的降低有关，浅滩可能会将该设备用于临时保护或喂养策略。年份之间对潮汐速度的响应也有所不同，2009年的丰度范围为0至1.2 m / s，2010年的丰度范围为0.5至1.7 m / s。总的来说，这项初步研究概述了一种潜在有用的方法，以研究海洋环境中新的人类活动对物种的反应。

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  • 来源
    《Ocean & coastal management》 |2014年第10期|31-38|共8页
  • 作者

    Melanie Broadhurst; Sue Barr; C. David L. Orme;

  • 作者单位

    Division of Biology, Department of life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, UK;

    OpenHydro Ltd, Muchgrange, Greenore, Co. Louth, Ireland;

    Division of Biology, Department of life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire SL5 7PY, UK;

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