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首页> 外文期刊>Environmental Science & Technology >Critical Tissue Residue Approach Linking Accumulated Metals in Aquatic Insects to Population and Community-Level Effects
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Critical Tissue Residue Approach Linking Accumulated Metals in Aquatic Insects to Population and Community-Level Effects

机译：关键组织残留方法将水生昆虫中的累积金属与种群和社区水平的影响联系起来

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摘要

Whole body Zn concentrations in individuals (n = 825) from three aquatic insect taxa (mayflies Rhithrogena spp. and Drunella spp. and the caddisfly Arctopsyche grandis) were used to predict effects on populations and communities (n = 149 samples). Both mayflies accumulated significantly more Zn than the caddisfly. The presence/absence of Drunetta spp. most reliably distinguished sites with low and high Zn concentrations; however, population densities of mayflies were more sensitive to increases in accumulated Zn. Critical tissue residues (634 μg/g Zn for Drunella spp. and 267//g/g Zn for Rhithrogena spp.) caused a 20% reduction in maximum (90th quantile) mayfly densities. These critical tissue residues were associated with exposure to 7.0 and 3.9 /tg/L dissolved Zn for Drunella spp. and Rhithrogena spp., respectively. A threshold in a measure of taxonomic completeness (observed/expected) was observed at 5.4 /'g/L dissolved Zn. Dissolved Zn concentrations associated with critical tissue residues in mayflies were also associated with adverse effects in the aquatic community as a whole. These effects on populations and communities occurred at Zn concentrations below the U.S. EPA hardness-adjusted continuous chronic criterion.
机译：使用三种水生昆虫类群（可能是Rhithrogena spp。和Drunella spp。以及caddisfly Arctopsyche grandis）的个体（n = 825）的全身锌浓度来预测其对种群和群落的影响（n = 149个样本）。两种may的累积锌含量都比蝇高得多。 Drunetta spp的存在与否。锌浓度低和高的最可靠的区别部位；然而，may的种群密度对积累的锌的增加更为敏感。关键的组织残留（Drunella spp。为634μg/ g Zn，Rhithrogena spp。为267 // g / g Zn）导致最大（第90个分位数）may蝇密度降低20％。这些关键组织残留物与Drunella spp暴露于7.0和3.9 / tg / L的溶解锌有关。和Rhithrogena spp.。观测到的分类学完整性（观察/预期）的阈值为5.4 / g / L溶解的锌。与may中关键组织残留物相关的溶解锌浓度也与整个水生社区的不良影响有关。这些对种群和群落的影响发生在锌浓度低于美国EPA硬度调整的连续慢性标准时。

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  • 来源
    《Environmental Science & Technology》 |2011年第16期|p.7004-7010|共7页
  • 作者

    Travis S. Schmidt; William H. Clements; Robert E. Zuellig; Katharine A. Mitchell;

  • 作者单位

    Fort Collins Sdence Center, U.S. Geological Survey, Fort Collins, Colorado, 80526, United States,Stanley E. Church,Colorado Water Science Center, U.S. Geological Survey, Denver, Colorado, 80225, United States;

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

    Fort Collins Sdence Center, U.S. Geological Survey, Fort Collins, Colorado, 80526, United States,Colorado Water Science Center, U.S. Geological Survey, Denver, Colorado, 80225, United States;

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

  • 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);
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