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Spatial trends and impairment assessment of mercury in sport fish in the Sacramento-San Joaquin Delta watershed

机译:萨克拉曼多-圣华金河三角洲流域运动鱼中汞的空间趋势和危害评估

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摘要

A three-year study was conducted to examine mercury in sport fish from the Sacramento-San Joaquin Delta. More than 4000 fish from 31 species were collected and analyzed for total mercury in individual muscle filets. Largemouth bass and striped bass were the most contaminated, averaging 0.40 μg/g, while redear sunfish, bluegill and rainbow trout exhibited the lowest (<0.15 μg/g) concentrations. Spatial variation in mercury was evaluated with an analysis of covariance model, which accounted for variability due to fish size and regional hydrology. Significant regional differences in mercury were apparent in size-standardized largemouth bass, with concentrations on the Cosumnes and Mokelumne rivers significantly higher than the central and western Delta. Significant prey-predator mercury correlations were also apparent, which may explain a significant proportion of the spatial variation in the watershed.
机译:进行了为期三年的研究,以检查萨克拉曼多-圣华金河三角洲的运动鱼中的汞。收集了来自31个物种的4000多条鱼,并分析了各个肌肉片中的总汞。大嘴鲈鱼和条纹鲈鱼受污染最严重,平均为0.40μg/ g,而红背翻车鱼,蓝ill和虹鳟鱼的浓度最低(<0.15μg/ g)。汞的空间变化通过协方差分析模型进行了评估,该模型说明了由于鱼类大小和区域水文学而引起的变化。在尺寸标准化的大嘴鲈鱼中,汞的区域差异明显,其中Cosumnes河和Mokelumne河中的汞浓度明显高于中部和西部三角洲。捕食者与捕食者之间的汞相关性也很明显,这可以解释流域中很大一部分的空间变化。

著录项

  • 来源
    《Environmental pollution》 |2009年第11期|3137-3149|共13页
  • 作者单位

    San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA;

    San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA;

    San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA;

    San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA;

    California Department of Fish and Game, 7544 Sandholdt Rd, Moss Landing, CA 95039, USA;

    Moss Landing Marine Laboratories, 8272 Moss Landing Rd, Moss Landing, CA 95039, USA;

    Moss Landing Marine Laboratories, 8272 Moss Landing Rd, Moss Landing, CA 95039, USA;

    Central Valley Regional Water Quality Control Board, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670, USA;

    Department of Environmental Science and Policy, University of California, Davis, CA 95616, USA;

    San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA;

  • 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

    mercury; fish; sacramento-san joaquin delta; spatial trends; human health;

    机译:汞;鱼;萨克拉曼多圣华金三角洲;空间趋势;人类健康;

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