...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >The Use of Field and Mesocosm Experiments to Quantify Effects of Physical and Chemical Stressors in Mining-Contaminated Streams
【24h】

The Use of Field and Mesocosm Experiments to Quantify Effects of Physical and Chemical Stressors in Mining-Contaminated Streams

机译：利用田间试验和介观试验来量化物理和化学应力源在受污染的河流中的影响

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

Identifying causal relationships between acid mine drainage (AMD) and ecological responses in the field is challenging. In addition to the direct toxicological effects of elevated metals and reduced pH, mining activities influence aquatic organisms indirectly through physical alterations of habitat. The primary goal of this research was to quantify the relative importance of physical (metal-oxide deposition) and chemical (elevated metal concentrations) stressors on benthic macro-invertebrate communities. Mesocosm experiments conducted with natural assemblages of benthic macroinvertebrates established concentration-response relationships between metals and community structure. Field experiments quantified effects of metal-oxide contaminated substrate and showed significant differences in sensitivity among taxa. To predict the recovery of dominant taxa in the field, we integrated our measures of metal tolerance and substrate tolerance with estimates of drift propensity obtained from the literature. Our estimates of recovery were consistent with patterns observed at downstream recovery sites in the NFCC, which were dominated by caddisflies and baetid mayflies. We conclude that mesocosm and small-scale field experiments, particularly those conducted with natural communities, provide an ecologically realistic complement to laboratory toxicity tests. These experiments also control for the confounding variables associated with field-based approaches, thereby supporting causal relationships between AMD stressors and responses.
机译：识别酸性矿山排水（AMD）与现场生态响应之间的因果关系具有挑战性。除了升高的金属和降低的pH值的直接毒理作用外，采矿活动还通过栖息地的物理变化间接影响水生生物。这项研究的主要目的是量化底栖大型无脊椎动物群落上物理（金属氧化物沉积）和化学（金属浓度升高）胁迫源的相对重要性。底栖大型无脊椎动物自然组装进行的介观试验建立了金属与群落结构之间的浓度-反应关系。现场实验量化了被金属氧化物污染的底物的影响，并显示出各分类单元之间敏感性的显着差异。为了预测该领域中优势种群的恢复，我们将金属耐受性和底物耐受性的度量与从文献中获得的漂移倾向的估计值进行了整合。我们对恢复的估计与在NFCC下游恢复站点观察到的模式一致，这些模式主要是由甲虫和and虫主导。我们得出的结论是，中观宇宙和小规模的野外实验，尤其是在自然社区中进行的实验，为实验室毒性测试提供了生态上现实的补充。这些实验还可以控制与基于现场的方法相关的混淆变量，从而支持AMD压力源与响应之间的因果关系。

著录项

  • 来源
    《Environmental Science & Technology》 |2016年第14期|7825-7833|共9页
  • 作者

    Pete Cadmus; William H. Clements; Jacob L. Williamson; James F. Ranville; Joseph S. Meyer; Maria Jesus Gutierrez Gines;

  • 作者单位

    Department of Fish, Wildlife and Conservation Biology, Colorado State University, Fort Collins, Colorado 80523, United States,Colorado Parks and Wildlife, 317 W. Prospect Rd, Fort Collins, Colorado 80526, United States;

    Department of Fish, Wildlife and Conservation Biology, Colorado State University, Fort Collins, Colorado 80523, United States;

    Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado 80401, United States;

    Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado 80401, United States;

    Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado 80401, United States,Applied Limnology Professionals, LLC, 414 Anvil Way, Golden, Colorado 80401, United States;

    Department of Soil & Physical Science, Lincoln University, Canterbury, New Zealand;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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