Ecological assessment for the wetlands at milltown reservoir, missoula, montana: Characterization of emergent and upland habitats
Ecological assessment for the wetlands at milltown reservoir, missoula, montana: Characterization of emergent and upland habitats
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DOI：
10.1002/etc.5620131210
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发表时间：
1994-12
影响因子：
4.1
通讯作者：
G. Linder;R. Hazelwood;D. Palawski;J. Malloy;K. DuBois;M. Bollman;David C. Wilborn;S. Ott;G. Pascoe;Julie A. Dalsoglio
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文献类型：
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作者：
G. Linder;R. Hazelwood;D. Palawski;J. Malloy;K. DuBois;M. Bollman;David C. Wilborn;S. Ott;G. Pascoe;Julie A. Dalsoglio
美国西部矿区的湿地经常受到重金属污染沉积物的影响 本研究总结了对蒙大拿州西部米尔敦水库湿地 (MRW) 超级基金场地完成的土壤污染评估和生态评估 对于湿地以及湿地附近的高地栖息地，现场和实验室的生物评估应被视为生态风险评估的关键组成部分 根据栖息地类型，已经制定了危害和风险评估的现场和实验室方法，这些方法直接适用于超级基金生态风险评估流程，并考虑污染物的生物可用性和与长期接触相关的不良生物效应的微妙表现。作为 MRW 生态风险评估的一部分，现场调查和各种生物测试方法（例如陆地和水生测试）对于湿地评估至关重要 为了评估 MRW 的重金属影响，生态评估中的现场和实验室方法包括湿地划定和初步植物和野生动物调查、紧急和高地栖息地的植被测试、土壤大型无脊椎动物（蚯蚓）测试、使用两栖动物和细菌测试系统的初步研究、土壤特征以及土壤、沉积物和生物材料的化学分析。 通过分析，这些生物和生态评估对 MRW 的生态影响和暴露进行了综合评估 从 MRW 的实验室演讲和现场工作收集的数据表明，生物和生态影响在湿地中的表达是微妙的 结合沉积物污染评估，这些研究应减少与 MRW 基线生态风险评估相关的不确定性
Wetlands in mining districts in the western United States are frequently impacted by heavy metal contaminated sediments The present study summarizes a soil contamination evaluation and an ecological assessment completed for a Super- fund site located at Milltown Reservoir wetlands (MRW) in western Montana For wetlands, as well as upland habitats adja cent to wetlands, biological evaluations in the field and laboratory should be considered critical components in the ecological risk assessment process Depending upon habitat type, field and laboratory methods have been developed for hazard and risk assessment that lend themselves directly to the Superfund ecological risk assessment process, and that consider contaminant bio- availability and subtle expressions of adverse biological effects associated with chronic exposures As part of an ecological risk assessment for MRW, field surveys and a variety of biological test methods (e g , terrestrial and aquatic tests) were critical to the wetland evaluation For evaluating heavy metal effects at MRW, field and laboratory methods within the ecological assess ment included wetlands delineation and preliminary plant and wildlife survey, vegetation tests in emergent and upland habi tats, soil macroinvertebrate (earthworm) tests, preliminary studies using amphibian and bacterial test systems, soil characterizations, and chemical analysis of soils, sediments, and biological materials In conjunction with chemical analyses, these biological and ecological evaluations yielded an integrated evaluation of ecological effects and exposure at MRW The data gathered from lab oratory and field work at MRW suggested that biological and ecological effects were subtle in their expression in the wetland In conjunction with sediment contamination evaluations, these studies should reduce the uncertainty associated with the base- line ecological risk assessment for MRW