...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Western North American Naturalist >DISTRIBUTION AND MOVEMENT OF BIG SPRING SPINEDACE (LEPIDOMEDA MOLLISPINIS PRATENSIS) IN CONDOR CANYON, MEADOW VALLEY WASH, NEVADA
【24h】

DISTRIBUTION AND MOVEMENT OF BIG SPRING SPINEDACE (LEPIDOMEDA MOLLISPINIS PRATENSIS) IN CONDOR CANYON, MEADOW VALLEY WASH, NEVADA

机译：内华达州梅多瓦利洗地大康纳峡谷的大春枝（鳞翅目MOLLISPINIS PRATENSIS）的分布和运动

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

Big Spring spinedace (Lepidomeda mollispinis pratensis) is a cyprinid whose entire population occurs within a section of Meadow Valley Wash, Nevada. Other spinedace species have suffered population and range declines (one species is extinct). Managers, concerned about the vulnerability of Big Spring spinedace, have considered habitat restoration actions or translocation, but they have lacked data on distribution or habitat use. Our study occurred in an 8.2-km section of Meadow Valley Wash, including about 7.2 km in Condor Canyon and 0.8 km upstream of the canyon. Big Spring spinedace were present upstream of the currently listed critical habitat, including in the tributary Kill Wash. We found no Big Spring spinedace in the lower 3.3 km of Condor Canyon. We tagged Big Spring spinedace ≥70 mm fork length (range 70–103 mm) with passive integrated transponder tags during October 2008 (n = 100) and March 2009 (n = 103) to document movement. At least 47 of these individuals moved from their release location (up to 2 km). Thirty-nine individuals moved to Kill Wash or the confluence area with Meadow Valley Wash. Ninety-three percent of movement occurred in spring 2009. Fish moved both upstream and downstream. We found no movement downstream over a small waterfall at river km 7.9 and recorded only one fish that moved downstream over Delmue Falls (a 12-m drop) at river km 6.1. At the time of tagging, there was no significant difference in fork length or condition between Big Spring Spinedace that were later detected moving and those not detected moving. We found no significant difference in fork length or condition at time of tagging of Big Spring spinedace ≥70 mm fork length that were detected moving and those not detected moving. Kill Wash and its confluence area appeared important to Big Spring spinedace; connectivity with these areas may be key to species persistence. These areas may provide a habitat template for restoration or translocation. The lower 3.3 km of Meadow Valley Wash in Condor Canyon may be a good candidate section for habitat restoration actions.
机译：大春刺（Lepidomeda mollispinis pratensis）是一种塞浦路斯人，其全部种群都位于内华达州Meadow Valley Wash的一部分内。其他刺棘物种的种群和范围均减少（一种物种已灭绝）。管理者担心大泉棘刺的脆弱性，曾考虑过栖息地恢复行动或易位，但他们缺乏有关分布或栖息地使用的数据。我们的研究发生在Meadow Valley Wash 8.2公里的区域，其中包括Condor Canyon约7.2 km和峡谷上游0.8 km。在目前列出的重要栖息地上游，包括在支流基什沃什（Kash Wash），存在大泉刺棘，我们在Condor Canyon下游3.3公里处未发现大泉刺棘。我们在2008年10月（n = 100）和2009年3月（n = 103）之间用无源集成应答器标签标记了≥70 mm叉长≥70 mm的Big Spring spinedac​​e，以记录运动。这些人中至少有47人离开了释放地点（长达2公里）。 39个人移居至Kill Wash或Meadow Valley Wash的汇合区域，百分之九十三的移动发生在2009年春季，鱼类向上游和下游移动。我们发现，在7.9公里河上的小瀑布上没有下游运动，仅记录到在6.1公里河上的德尔穆瀑布（下降12米）上下游有一条鱼运动。标记时，在后来被发现移动的Big Spring Spinedac​​e和未被发现移动的大弹簧棘刺之间，叉长或状况没有显着差异。在标记大于或等于70 mm的Big Spring棘齿时，我们发现叉叉长度或状况没有明显差异，被检测到的和未检测到的都在移动。 Kill Wash及其汇合区域对于Big Spring脊柱动物似乎很重要。与这些区域的连通性可能是物种持久性的关键。这些区域可为恢复或易位提供栖息地模板。位于神鹰峡谷的Meadow Valley Wash下游3.3公里可能是恢复栖息地的良好选择。

著录项

相似文献

  • 外文文献
  • 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