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首页> 外文期刊>Environmental research >The relationship between land use and emerging and legacy contaminants in an Apex predator, the bottlenose dolphin (Tursiops truncatus), from two adjacent estuarine watersheds
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The relationship between land use and emerging and legacy contaminants in an Apex predator, the bottlenose dolphin (Tursiops truncatus), from two adjacent estuarine watersheds

机译：来自两个相邻河口流域的Apex捕食者宽吻海豚（Tursiops truncatus）中的土地利用与新兴污染物和遗留污染物之间的关系

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摘要

Background: Persistent organohalogen contaminant (POC) exposure is of concern in marine mammals due to the potential for adverse health effects. Studies have examined POCs in marine mammals on a regional scale; however, limited data exists on POC concentrations relative to land use and watersheds. Objective: Examine geographical variation of POC concentrations in bottlenose dolphins as it relates to land, and watershed, use. Methods: POC (PCBs, DDTs, and PBDEs) concentrations were measured in blubber of bottlenose dolphins (n= 40) sampled in estuarine waters near Charleston, SC. Photo-identification sighting histories were used to assess the dolphins' use of estuarine waters in two adjacent watersheds (Cooper Subbasin and Stono Subbasin) in the study area and to determine land use (developed, forested, agriculture, and wetland) associations. Results: Dolphins with ≥ 75% of their sightings in the Cooper Subbasin, which is characterized by a higher degree of developed land use, exhibited higher levels of PCBs, PBDEs, and total pesticides than those with ≥ 75% of their sightings in the Stono Subbasin. Observed differences were significant for ∑PBDEs and ∑DDTs/∑PCBs ratio. Significant positive correlations were observed between ∑PBDEs and developed land use and between ∑DDTs/∑PCBs and wetland land use. A significant negative correlation was observed between ∑DDTs/∑PCBs and developed land use. Conclusion: The spatial pattern of PBDEs and the ∑DDTs/∑PCBs detected in dolphin blubber was shown to vary significantly with adjacent watersheds and land use associations.
机译：背景：由于存在潜在的不利健康影响，持久性有机卤素污染物（POC）暴露是海洋哺乳动物中令人关注的问题。研究已经在区域范围内研究了海洋哺乳动物的POC。然而，关于POC浓度相对于土地利用和流域的数据有限。目的：检查宽吻海豚中POC浓度的地理变化，这与土地和流域的使用有关。方法：在南卡罗来纳州查尔斯顿附近的河口水中取样的宽吻海豚（n = 40）的脂糊中测量POC（PCBs，DDTs和PBDEs）的浓度。使用照片识别目击历史来评估海豚在研究区域内两个相邻流域（库珀（Cooper）盆地和斯托诺（Stono）盆地）对河口水的利用，并确定土地利用（发达，森林，农业和湿地）的关联性。结果：在库珀盆地中视线≥75％的海豚具有较高的土地利用程度，其多氯联苯，多溴二苯醚和总农药的含量高于在斯通诺中视线≥75％的海豚。子盆。观察到的差异对于∑PBDEs和∑DDTs / ∑PCBs比率而言是显着的。在∑PBDEs与已开发土地利用之间以及∑DDTs / ∑PCBs与湿地土地利用之间观察到显着的正相关。 ∑DDTs / ∑PCBs与发达土地利用之间存在显着的负相关。结论：海豚脂肪中检测到的多溴二苯醚和∑DDTs / ∑PCBs的空间格局随相邻流域和土地利用的关联而显着变化。

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  • 来源
    《Environmental research》 |2014年第11期|346-353|共8页
  • 作者

    Jeffrey Adams; Todd Speakman; Eric Zolman; Greg Mitchum; Edward Wirth; Gregory D. Bossart; Patricia A. Fair;

  • 作者单位

    Ocean Associates, Inc. Under Contract to National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Office of Protected Resources, 1315 East West Highway, Silver Spring, MD 20910, USA;

    JHT, Inc. Under Contract to National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Hollings Marine Lab, 331 Fort Johnson Road, Charleston, SC 29412, USA;

    JHT, Inc. Under Contract to National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Hollings Marine Lab, 331 Fort Johnson Road, Charleston, SC 29412, USA;

    National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, 219 Fort Johnson Road, Charleston, SC 29412, USA;

    National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, 219 Fort Johnson Road, Charleston, SC 29412, USA;

    Harbor Branch Oceanographic Institution at Florida Atlantic University, 5600 U.S. 1 North, Ft. Pierce, FL 34946, USA,Georgia Aquarium, 225 Baker Street, NW Atlanta, GA 30313, USA;

    National Oceanic and Atmospheric Administration, National Ocean Service, Center for Coastal Environmental Health & Biomolecular Research, 219 Fort Johnson Road, Charleston, SC 29412, USA;

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  • 正文语种 eng
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  • 关键词

    Persistent organohalogen compounds (POC); Bottlenose dolphins; Bioaccumulation; Apex predator; Spatial distribution; Watershed; Land use;

    机译：持久性有机卤素化合物（POC）;宽吻海豚;生物蓄积;顶级掠食者;空间分布;分水岭;土地利用;

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