• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Michigan Academician >Using a Habitat-Based Model to Predict the Effects of Dam Removal on Sea Lamprey (Petromyzon marinus) Populations in Great Lakes Tributaries
【24h】

Using a Habitat-Based Model to Predict the Effects of Dam Removal on Sea Lamprey (Petromyzon marinus) Populations in Great Lakes Tributaries

机译：使用基于栖息地的模型来预测大坝支流除水对南on（Petromyzon marinus）种群的影响

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

The sea lamprey Petromyzon marinus is an invasive fish species in the Great Lakes that parasitizes other lake fish. The larval form inhabits surrounding streams. Because of dams sea lamprey populations have been excluded from numerous tributaries. Growing interest in stream restoration and dam removal requires consideration of the consequent effects on sea lamprey populations. The ability to predict the streams that are susceptible to invasion and the potential number of parasitic-phase juveniles that could emerge is necessary in order to evaluate the effects of dam removal prior to management action. In this study, we constructed a stage-based matrix population model to simulate the potential establishment and growth of sea lamprey populations in streams where dams have been removed. The model focuses on the larval phase and estimates the annual number of parasitic-phase sea lamprey that are produced. Significant biological and physical variables that influence sea lamprey survival and growth, such as spawning run characteristics, substrate quality, and stream temperature, are incorporated into the model. We calibrated the model using two Lake Michigan tributaries, Hogs Island Creek and the Ogontz River. A sensitivity analysis of the model parameters revealed that changes in temperature could result in significant changes of a stream's productivity. Additionally, the model was sensitive to changes in the maximum larval densities and percent of habitat cover when a stream was already saturated with sea lamprey larvae. Application of the model in the Misery River, a Lake Superior tributary, suggests the potential for increased production of parasitic-phasesea lamprey if the above-barrier habitat were to become available.
机译：海七lamp鱼Petromyzon marinus是五大湖中的一种入侵鱼类，寄生于其他湖泊鱼类中。幼虫栖息在周围的溪流中。由于水坝的存在，海角鳗种群被排除在众多支流之外。对溪流修复和大坝拆除的兴趣日益浓厚，需要考虑对海七lamp鳗种群的后续影响。为了评估在采取管理措施之前拆除大坝的效果，必须具备预测易受侵袭的河流的能力以及可能出现的寄生相幼虫数量的能力。在这项研究中，我们构建了一个基于阶段的矩阵种群模型，以模拟在已拆除大坝的河流中海七lamp鳗种群的潜在建立和增长。该模型侧重于幼体阶段，并估计产生的寄生相海鳗的年数量。影响海南鳗生存和生长的重要生物学和物理变量，例如产卵运行特性，基质质量​​和溪流温度，已被纳入模型。我们使用两个密歇根湖支流Hogs Island Creek和Ogontz River校准了模型。对模型参数的敏感性分析表明，温度变化可能会导致物流生产率的显着变化。此外，当溪流已经被七lamp鳗幼虫饱和时，该模型对最大幼虫密度和栖息地覆盖率的变化很敏感。该模型在苏必利尔湖支流苦难河中的应用表明，如果要获得以上屏障的栖息地，则有可能增加寄生相海鳗的产量。

著录项

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