...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ICES Journal of Marine Science >Evaluating the interaction of the invasive tunicate Didemnum vexillum with the Atlantic sea scallop Placopecten magellanicus on open and closed fishing grounds of Georges Bank
【24h】

Evaluating the interaction of the invasive tunicate Didemnum vexillum with the Atlantic sea scallop Placopecten magellanicus on open and closed fishing grounds of Georges Bank

机译：在乔治银行的开放式和封闭式捕捞场上评估侵入性被膜Didemnum vexillum与大西洋扇贝Placopecten magellanicus的相互作用

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

An invasive colonial tunicate (Didemnum vexillum) was initially observed on Georges Bank in 1998, and it has since spread in benthic environments on fishing grounds and areas closed to bottom-fishing. It can form dense mats on gravel substrates that are also a preferred habitat for the Atlantic sea scallop (Placopecten magellanicus), which supports one of the most valuable commercial fisheries in the United States. We used HabCam, a vessel-towed underwater imaging system, to investigate the spatial distributions of P. magellanicus and D. vexillum in a region that includes fishing grounds and an area protected from bottom-fishing. We found a negative relationship between P. magellanicus and D. vexillum, even after controlling for substrate and management status, suggesting that D. vexillum competes for habitat with P. magellanicus. We also applied the geostatistical method of universal kriging to interpolate the distribution of D. vexllium based on the covariables gravel, depth and area. Our results indicate that D. vexillum is more common in areas open to fishing than in the areas closed to fishing, even taking bottom substrate effects into account. Didemnum vexillum appears to have spread over portions of the northern edge of Georges Bank. This research evaluates potential fish and invertebrate habitat degradation caused by an invasive species.
机译：最初在1998年在乔治银行观察到侵入性的被膜被膜（Didemnum vexillum），此后一直在底栖环境中的渔场和靠近底钓的区域传播。它可以在砾石基质上形成致密的垫层，而砾石基质也是大西洋扇贝（Placopecten magellanicus）的首选栖息地，大西洋扇贝是美国最有价值的商业渔业之一。我们使用了HabCam（一种拖曳式水下成像系统）来调查在包括渔场和免受底钓保护的区域内的麦哲伦球菌和维氏螺旋藻的空间分布。即使在控制了基质和管理状态之后，我们仍发现麦哲伦球菌与维克西非菌之间存在负相关关系，这表明维氏菌D. veillillum与麦哲伦菌竞争了生境。我们还应用了通用克里金法的地统计方法，根据协变量砾石，深度和面积插值石D的分布。我们的结果表明，即使考虑到底物的影响，D。vexillum在开放捕鱼区比在封闭捕鱼区更常见。 Didemnum vexillum似乎散布在乔治银行北缘的部分地区。这项研究评估了由入侵物种引起的潜在鱼类和无脊椎动物生境退化。

著录项

相似文献

  • 外文文献
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