• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Conservation >Seasonal cycles and long-term trends in abundance and species composition of sharks associated with cage diving ecotourism activities in Hawaii
【24h】

Seasonal cycles and long-term trends in abundance and species composition of sharks associated with cage diving ecotourism activities in Hawaii

机译：与夏威夷网箱潜水生态旅游活动有关的鲨鱼的丰度和物种组成的季节性周期和长期趋势

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Shark cage diving is both popular and controversial, with proponents citing educational value and non-extractive use of natural resources and opponents raising concerns about public safety and ecological impacts. Logbook data collected 2004-2008 from two Oahu (Hawaii) shark cage diving operations were analysed to determine whether such voluntary records provide useful insights into shark ecology or ecotourism impacts. Operators correctly identified common shark species and documented gross seasonal cycles and long-term trends in abundance of Galapagos (Carcharhinus galapagensis), sandbar (Carcharhinus plumbeus) and tiger sharks (Galeorcerdo cuvier). Annual cycles in shark abundance may indicate seasonal migrations, whereas long-term trends suggest gradual exclusion of smaller sandbar sharks from cage diving sites. Numerically dominant (> 98%) Galapagos and sandbar sharks are rarely implicated in attacks on humans. Negligible impact on public safety is supported by other factors such as: (1) remoteness of the sites, (2) conditioning stimuli that are specific to the tour operations and different from inshore recreational stimuli and (3) no increase in shark attacks on the north coast of Oahu since cage diving started. Tracking studies are required to validate logbook data and to determine whether sharks associated with offshore cage diving travel into inshore areas used for in-water recreation.
机译：鲨鱼笼潜水既受欢迎又引起争议，支持者称其教育价值和对自然资源的非提取性使用，反对者则对公共安全和生态影响表示担忧。分析了2004年至2008年从瓦胡岛（夏威夷）两个鲨鱼笼潜水作业收集的日志数据，以确定这些自愿记录是否对鲨鱼生态或生态旅游影响提供有用的见解。操作人员正确地确定了常见的鲨鱼种类，并记录了总的季节性周期和加拉帕戈斯（Carcharhinus galapagensis），沙洲（Carcharhinus plumbeus）和虎鲨（Galeorcerdo cuvier）丰度的长期趋势。鲨鱼数量的年度循环可能表明季节性迁移，而长期趋势表明，较小的沙洲鲨鱼逐渐被网箱潜水场所排除。在数量上占优势（> 98％）的加拉帕戈斯群岛和沙洲鲨很少涉及对人类的袭击。对公共安全的微不足道的影响还受到其他因素的支持，这些因素包括：（1）场地的偏远性；（2）针对旅行运营而有别于近海娱乐刺激的调节刺激；（3）对鲨鱼的袭击没有增加笼子潜水开始以来，瓦胡岛北海岸。需要进行追踪研究，以验证日志数据并确定与近海网箱潜水相关的鲨鱼是否会进入用于水上娱乐的近海区域。

著录项

  • 来源
    《Environmental Conservation》 |2009年第2期|104-111|共8页
  • 作者

    CARL G. MEYER; JONATHAN J. DALE; YANNIS P. PAPASTAMATIOU; NICHOLAS M. WHITNEY; KIM N. HOLLAND;

  • 作者单位

    Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Coconut Island, Kaneohe, HI 96744, USA;

    Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Coconut Island, Kaneohe, HI 96744, USA Department of Zoology, Edmonson Hall, University of Hawaii at Manoa, Honolulu, Hawaii 98822, USA;

    Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Coconut Island, Kaneohe, HI 96744, USA;

    Center for Shark Research, Mole Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, Florida 34236, USA;

    Hawaii Institute of Marine Biology, University of Hawaii at Manoa, PO Box 1346, Coconut Island, Kaneohe, HI 96744, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cage diving; galapagos shark; hawaii; sandbar shark; shark ecotourism;

    机译：笼潜水;加拉帕戈斯鲨鱼;夏威夷沙鲨鲨鱼生态旅游;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号