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Synchronous Response of Hydrophobic Chemicals in Herring Gull Eggs from the Great Lakes

机译:五大湖鲱鸥卵中疏水化学物质的同步响应

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摘要

Herring gull eggs from Great Lakes nesting sites exhibit short-term changes in hydrophobic chemical concentrations that are synchronized within and between Great Lakes. At one Lake Ontario site, for example, short-term deviations from long-term trends for PCBs, DDE, mirex, hexachlorobenzene, and dieldrin in gull eggs tend to correlate significantly with each other, with these chemicals at another site in Lake Ontario, and with gull egg chemicals from Lakes Superior, Huron, and Erie. Similar comparisons made for other Great Lakes are also significantly nonrandom. This synchrony indicates that some large-scale force—here proposed to be weather patterns—controls short-term patterns of hydrophobic chemical concentrations in gull eggs across the Great Lakes. Among eight alternative hypotheses considered, the data are least inconsistent with the following mechanism: warm spring weather conducive to phytoplankton growth produces relatively uncontaminated phytoplankton, which in turn produce less contaminated food for the gulls during the critical period of egg yolk formation (and vice versa for cold spring weather).
机译:大湖区筑巢点的鲱鸥卵在大湖内部和之间同步出现疏水化学浓度的短期变化。例如,在安大略湖的一个地点,鸥卵中多氯联苯,DDE,灭蚁灵,六氯苯和狄氏剂的长期趋势的短期偏差往往与彼此显着相关,而这些化学物质在安大略湖的另一地点,以及来自苏必利尔湖,休伦湖和伊利湖的海鸥蛋类化学物质。对其他五大湖地区的类似比较也很明显是非随机的。这种同步表明,一些大的力量(这里被提议为天气模式)控制了整个大湖区海鸥卵中疏水化学物质浓度的短期模式。在考虑的八种替代假设中,数据与以下机理的矛盾最少:有利于浮游植物生长的春季温暖天气产生了相对未受污染的浮游植物,从而在蛋黄形成的关键时期为海鸥产生了较少污染的食物(反之亦然) (对于寒冷的春季天气)。

著录项

  • 来源
    《Environmental Science & Technology》 |1995年第3期|p.740-750|共11页
  • 作者

    DANIEL W. SMITH;

  • 作者单位

    BCM Engineers, Inc., One Plymouth Meeting, Plymouth Meeting, Pennsylvania 19462;

  • 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 环境化学;
  • 关键词

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