• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Assessment of Mercury Cycling in a Coupled Estuarine/Terrestrial Ecosystem and Development of a Long-term Ecosystem-Level Mercury Monitoring Site at the Smithsonian Environmental Research Center. Report 1: Early Results 2007-2008
【24h】

Assessment of Mercury Cycling in a Coupled Estuarine/Terrestrial Ecosystem and Development of a Long-term Ecosystem-Level Mercury Monitoring Site at the Smithsonian Environmental Research Center. Report 1: Early Results 2007-2008

机译：在史密森环境研究中心评估河口/陆地生态系统中的汞循环和长期生态系统汞监测点的开发。报告1：2007-2008早期结果

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study was initiated to characterize the links between mercury deposition on the Maryland Coastal Plain landscape and mercury bioaccumulation in terrestrial and estuarine biota. With controls of mercury emissions through the Clean Air Interstate (CAIR) and Clean Air Mercury Rules (CAMR) of 2005 coming on line in Maryland in 2010, there was an obvious need to assess the performance of these rules in reducing human and wildlife exposure to mercury, and to reduce uncertainty in cost/benefit assessment of these regulations. While it is expected that it may be relatively easy to track changes in atmospheric deposition response to mercury emissions reductions, largely through the Mercury Deposition Network (MDN), observing these changes on MeHg concentrations in the various environmental compartments of the ecosystem, including the biological receptors, is likely to be more difficult. We have developed a coherent monitoring and assessment framework as was proposed in Mason et al. (2005). At the Smithsonian Environmental Research Center we are building a holistic, multimedia, long-term approach to detecting change across a range of ecosystems of differing sensitivity to mercury. In this study we are monitoring Hg deposition, as part of the MDN network, and total mercury (T-Hg) and methylmercury (MeHg) fluxes from three watersheds of differing land use. We are also measuring concentrations in target organisms, starting with young of the year fish. This first report describes the results of scoping studies and the steps made in the implementation of the study from 2005 to 2006 and the first 2 years of data obtained between 2007 and 2008.

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