• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Water Resources Association >SALINITY AS A LIMITING FACTOR FOR BIOLOGICAL CONDITION IN MINING-INFLUENCED CENTRAL APPALACHIAN HEADWATER STREAMS
【24h】

SALINITY AS A LIMITING FACTOR FOR BIOLOGICAL CONDITION IN MINING-INFLUENCED CENTRAL APPALACHIAN HEADWATER STREAMS

机译：盐度是受采矿影响的中央阿巴拉契亚流域生物条件的限制因素

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

Recent studies have found that Appalachian coal mining causes increased surface water salinity, and that benthic macroinvertebrate communities in salinized mining-influenced streams differ from communities in streams draining unmined areas. Understanding the role of salinity in shaping these communities is challenging because such streams are often influenced by a variety of stressors in addition to salinity. We characterized associations of salinity with biotic condition while isolating salinity from other stressors through rigorous site selection. We used a multimetric index of biotic condition to characterize benthic macroinvertebrate communities in headwater streams in the Central Appalachian Ecoregion of Virginia across a gradient of sulfate-dominated salinity. We found strong negative seasonal correlations between biotic condition and three salinity measures (specific conductance, total dissolved solids, and SO42- concentration). We found no evidence to suggest stressors other than salinity as significant influences on biotic condition in these streams. Our results confirm negative associations of salinity with benthic macroinvertebrate community condition, as observed in other studies. Thus, our findings demonstrate that elevated salinity is an important limiting factor for biological condition in Central Appalachian headwater streams.
机译：最近的研究发现，阿巴拉契亚煤矿开采导致地表水盐度增加，并且受盐碱化采矿影响的河流底栖大型无脊椎动物群落与排泄未开采地区的河流的群落不同。了解盐度在塑造这些社区中的作用具有挑战性，因为除盐度外，此类溪流通常还受到多种压力源的影响。我们表征了盐度与生物条件的关联，同时通过严格的地点选择将盐度与其他压力源隔离开来。我们使用生物状况的多指标指标来表征在硫酸盐占主导的盐度梯度下，在弗吉尼亚中央阿巴拉契亚生态区的源头溪流中底栖大型无脊椎动物群落。我们发现生物条件与三种盐度测量值（比电导，总溶解固体和SO42-浓度）之间存在强烈的负相关性。我们发现没有证据表明盐度以外的压力因素会严重影响这些河流中的生物状况。我们的结果证实了盐度与底栖大型无脊椎动物群落状况的负相关性，如其他研究中所观察到的。因此，我们的研究结果表明，盐度升高是中阿巴拉契亚中部源水流生物学条件的重要限制因素。

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