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首页> 外文期刊>Environmental Science & Technology >Impacts and Recovery of the Deepwater Horizon Oil Spill on Vegetation Structure and Function of Coastal Salt Marshes in the Northern Gulf of Mexico
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Impacts and Recovery of the Deepwater Horizon Oil Spill on Vegetation Structure and Function of Coastal Salt Marshes in the Northern Gulf of Mexico

机译：墨西哥北部湾深水地平线溢油的影响和恢复对沿海盐沼植被结构和功能的影响

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摘要

We investigated the impacts of the Deepwater Horizon (DWH) oil spill on two dominant coastal saltmarsh plants, Spartina alterniflora and Juncus roemerianus, in the northern Gulf of Mexico and the processes controlling differential species-effects and recovery. Seven months after the Macondo MC 252 oil made landfall along the shoreline salt marshes of northern Barataria Bay, Louisiana, concentrations of total petroleum hydrocarbons in the surface 2 cm of heavily oiled marsh soils were as high as 510 mg g~(-1). Heavy oiling caused almost complete mortality of both species. However, moderate oiling impacted Spartina less severely than Juncus and, relative to the reference marshes, had no significant effect on Spartina while significantly lowering live aboveground biomass and stem density of Juncus. A greenhouse mesocosm study supported field results and indicated that S. alterniflora was much more tolerant to shoot oil coverage than /. roemerianus. Spartina recovered from as much as 100% oil coverage of shoots in 7 months; however, Juncus recovered to a much lesser extent. Soil-oiling significantly affected both species. Severe impacts of the Macondo oil to coastal marsh vegetation most likely resulted from oil exposure of the shoots and oil contact on/in the marsh soil, as well as repeated oiling events.
机译：我们调查了深水地平线（DWH）漏油对墨西哥湾北部两种主要的沿海盐沼植物，互花米草和Jun草的影响，以及控制差异物种效应和恢复的过程。 Macondo MC 252油沿路易斯安那州北部巴拉塔里亚湾北部海岸线的盐沼登陆后七个月，重油沼泽土壤2 cm表面的总石油烃浓度高达510 mg g（-1）。大量上油导致两个物种几乎完全死亡。但是，适度的上油对斯巴达虫的影响不如准绳草那么严重，并且相对于参考沼地，对斯巴汀娜没有显着影响，同时显着降低了地上的活地生物量和茎秆的密度。温室中观世界的研究支持田间试验结果，并表明互花米草比油菜更能耐受油覆盖。罗梅利亚努斯。 Spartina在7个月内从高达100％的嫩芽油中恢复过来；但是，Juncus的恢复程度要小得多。土壤油污严重影响了这两个物种。 Macondo油对沿海沼泽植被的严重影响很可能是由于芽中的油暴露和沼泽土壤上/之中的油接触以及反复上油事件引起的。

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  • 来源
    《Environmental Science & Technology》 |2012年第7期|p.3737-3743|共7页
  • 作者

    Qianxin Lin; Irving A. Mendelssohn;

  • 作者单位

    Department of Oceanography and Coastal Sciences, School of the Coast and Environment, Louisiana State University, Baton Rouge,Louisiana 70803, United States;

    Department of Oceanography and Coastal Sciences, School of the Coast and Environment, Louisiana State University, Baton Rouge,Louisiana 70803, 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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  • 正文语种 eng
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