• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>River Research and Applications >Design and testing of a trap removing Chinese mitten crabs (Eriocheir sinensis, H. Milne Edwards, 1853) from invaded river systems
【24h】

Design and testing of a trap removing Chinese mitten crabs (Eriocheir sinensis, H. Milne Edwards, 1853) from invaded river systems

机译：从入侵的河流系统中删除中国手套螃蟹（Eriocheir Sinensis，H. Milne Edwards，1853年）的设计和测试

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

摘要

The Chinese mitten crab is one of the top invasive species in Europe. In Flanders (Belgium), they are associated with river ecosystem degradation, especially the loss of aquatic vegetation and associated ecosystem services. Management measures have therefore been put in place to reduce the number of crabs migrating between the sea and freshwater areas and ultimately control the population. Although we are still long way from the goal, a low-cost method has been applied to successfully catch migrating crabs. In this article, we outline the design and functioning of the trap. We monitored the population in a lowland river, measured migration speeds and calculated crab densities. With over 1 million crabs caught in 2 years, the trap proved to be very effective. Median anadromous (spring) and catadromous (autumn) migration speeds were 0.69 and 0.96 km day(-1), respectively. Anadromous migrating crab density was calculated to be up to 3.20 ind. m(-2) river bed. Resident crab density was calculated to be up to 2.05 ind. m(-2) river bed. We conclude that this trap is a very useful tool for water managers to catch Chinese mitten crabs in rivers and discuss the pathways towards reducing the population and protect the entire freshwater catchment.
机译：中国手套螃蟹是欧洲最热门的侵入性物种之一。在法兰德斯（比利时），他们与河流生态系统退化有关，尤其是水生植被和相关生态系统服务的丧失。因此，已经提出了管理措施，以减少海洋与淡水区之间迁移的螃蟹数量，最终控制人口。虽然我们从目标中仍然存在漫长的路径，但已经应用了低成本的方法来成功捕获迁移螃蟹。在本文中，我们概述了陷阱的设计和运作。我们监测了低地河流中的人口，测量了迁移速度和计算的蟹密度。 2年内超过100万螃蟹，陷阱证明是非常有效的。中位数（春天）和多向前（秋季）迁移速度分别为0.69和0.96公里（-1）。计算副迁移蟹密度为高达3.20 Ind。 M（-2）河床。居民蟹密度计算为高达2.05 Ind。 M（-2）河床。我们得出结论，此陷阱是水管理人员在河流中捕获中国手套螃蟹的一个非常有用的工具，并讨论降低人口的途径，保护整个淡水集水区。

著录项

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