期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 43, 期 12, 页码 4361-4366出版社
AMER CHEMICAL SOC
DOI: 10.1021/es803665c
关键词
-
资金
- U.S. EPA Region 4
- National Park Service, Florida Department of Environmental Protection (FDEP) [CA H5297-05-008]
- U.S. Department of Energy [DE-FG01-05EW07033]
- Natural Science Foundation of China
Spatial patterns in mercury cycling and bioaccumulation at the landscape level in the Everglades were investigated by collecting and analyzing multimedia samples for mercury species and biogeochemical characteristics from 228 randomly located stations. Higher total mercury (THg) in environmental compartments (surface water, soil, flocculent detrital material (floc), and periphyton) generally occurred in the northern and central Everglades, but higher THg in water and periphyton in the Everglades National Park was an exception. Multiple biogeochemical characteristics, such as surface water dissolved organic matter (DOCSW), pH, chloride, and compositional properties of solid compartments (soil and floc), were identified to be important factors controlling THg distribution. Methylmercury (MeHg) was also higher in the northern Everglades for water, soil, and floc, but not for periphyton. Higher mosquitofish THg and bioaccumulation factor were observed in the central and southern Everglades, partially in accordance with periphyton MeHg distribution, but not in the hot spot areas of water, soil, or floc MeHg. The discrepancy in mercury bioaccumulation and mercury distribution in environmental compartments suggests that in addition to MeHg production, biogeochemical controls that make MeHg available to aquatic organisms, such as DOCSW and compositional properties of soil and floc, are important in mercury bioaccumulation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据