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首页> 外文会议>Eighteenth World Dredging Congress(WODCON XVIII) >EFFECTIVENESS OF RELOCATION TRAWLING DURING HOPPER DREDGING FOR REDUCING INCIDENTAL TAKE OF SEA TURTLES
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EFFECTIVENESS OF RELOCATION TRAWLING DURING HOPPER DREDGING FOR REDUCING INCIDENTAL TAKE OF SEA TURTLES

机译：疏D过程中重排拖网对减少海龟偶然带走的功效

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摘要

Modified shrimp trawling equipment and techniques are used to capture and relocate threatened and endangered sea turtles from hopper dredging sites. This method of sea turtle protection was originally initiated in the early 1980s at Canaveral Harbor, Florida. In 1992, relocation trawling was implemented as a potential mitigation tool for incidental take (injury or mortality) of sea turtles for additional coastal hopper dredging projects in the southeastern United States. Although its effectiveness under various project conditions has been undocumented, this mitigation tool is now used extensively whenever sea turtles or Gulf sturgeon (Acipemer oxyrinchus desotoi) are potentially at risk for incidental take during hopper dredging projects. The National Marine Fisheries Service of the National Oceanic and Atmospheric Administration now recommends relocation trawling during many hopper projects throughout the southeastern United States and may recommend suspension of hopper dredging activities if weather or other conditions prevent trawling operations. This requirement impacts dredging schedules and inflates project costs. Relocation trawling is also a potentially hazardous undertaking for trawler crews and the species intended for protection. Other protected and non-protected organisms are also captured as by-catch and may be killed during the relocation trawling efforts. In light of the potential positive and negative impacts of relocation trawling during hopper dredging projects, it is crucial to evaluate the effectiveness of this technique as a mitigation option. Incidental take records from endangered species observer reports, relocation trawling reports, and hopper dredging project reports from 1995 through 2006 were analyzed to evaluate the effectiveness of relocation frawling for reducing incidental take of sea turtles. This study presents results related to sea turtles based upon: 1) analysis of species distribution; 2) analysis of catch per unit effort (CPUE) data; 3) spatial and temporal patterns of trawling captures and incidental takes; and 4) evaluation of effectiveness of trawling for reducing incidental takes.
机译：改良的虾拖网设备和技术用于从漏斗挖泥场捕获和重新安置濒临灭绝的海龟。这种保护海龟的方法最初于1980年代初在佛罗里达州的卡纳维拉尔港开始使用。 1992年，对美国东南部的其他沿海漏斗疏projects项目实施了搬迁拖网作业，将其作为潜在的缓解海龟（受伤或死亡）的工具。尽管尚未证明其在各种项目条件下的有效性，但这种缓解工具现在在漏斗疏projects项目中可能会偶然带走海龟或海湾st鱼（Acipemer oxyrinchus desotoi）的情况下得到广泛使用。现在，美国国家海洋与大气管理局的国家海洋渔业服务局建议在美国东南部的许多垃圾箱项目中进行拖网作业，如果天气或其他条件阻止拖网作业，则建议中止垃圾箱的挖泥活动。该要求会影响疏schedule进度并夸大项目成本。对于拖网渔船人员和打算保护的物种来说，拖网渔船也是一项潜在的危险工作。其他受保护和不受保护的生物也被捕获为副渔获物，并可能在搬迁拖网工作中被杀死。考虑到在挖泥船疏projects项目中进行拖网作业可能带来的正面和负面影响，评估该技术作为缓解方案的有效性至关重要。分析了从1995年到2006年的濒危物种观察员报告，搬迁拖网报告和料斗疏project项目报告中的附带记录，以评估搬迁爬网对减少海龟附带捕获的有效性。这项研究基于以下方面提出了与海龟有关的结果：1）物种分布分析； 2）分析每单位工作量捕获量（CPUE）数据； 3）拖网捕获物和附带物的时空格局； 4）评估拖网渔船减少意外事故发生的有效性。

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  • 来源
  • 会议地点 Lake Buena VistaFL(US);Lake Buena VistaFL(US)
  • 作者

    Dena Dickerson; Craig Theriot; Monica Wolters; Chris Slay; Trish Bargo; Will Parks;

  • 作者单位

    U.S. Army Corps of Engineers, Engineer Research and Development Center, Waterways Experiment Station, 3909 Halls Ferry Road, Vicksburg, MS, USA;

    Bowhead Information Technology Services, Inc., 3909 Halls Ferry Road, Vicksburg, Mississippi, USA;

    Bowhead Information Technology Services, Inc., 3909 Halls Ferry Road, Vicksburg, Mississippi, USA;

    Coastwise Consulting, 173 Virginia Avenue, Athens, Georgia, USA;

    East Coast Observers, Inc., P.O. Box 6192, Norfolk, Virginia, USA;

    REMSA, Inc., 124 West Queens Way, Hampton, Virginia, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 U615.351;
  • 关键词

    endangered species; sturgeon; entrainment; mitigation; biological opinion;

    机译：濒危物种;鲟;夹带减轻;生物学意见;
  • 入库时间 2022-08-26 14:23:46

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