Climate Change Data Portal
DOI | 10.1016/j.scitotenv.2019.02.302 |
Sediment organic carbon and temperature effects on methylmercury concentration: A mesocosm experiment | |
Buckman, K. L.1; Seelen, E. A.2; Mason, R. P.2; Balcom, P.2,3; Taylor, V. F.4; Ward, J. E.2; Chen, C. Y.1 | |
发表日期 | 2019 |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
卷号 | 666页码:1316-1326 |
英文摘要 | The fate and mobility of mercury, and its bioaccumulation primarily as methylmercury (MeHg), in marine ecosystems are influenced by climate related environmental factors, including increased temperature and carbon loading. To investigate the interactions between sediment organic carbon and temperature MeHg bioaccumulation, mesocosm experiments were conducted examining relationships between sediment, water column and biota (sediment-dwelling amphipod and juvenile oyster) MeHg concentration. Experimental treatments consisted of a two by two design of high and low temperature (15 & 25 degrees C) and high and low sediment organic carbon (4-5% and 13% LOI, pre-experiment). Sediment organic carbon had significant individual effects on MeHg concentration in water and biota, with higher carbon associated with lower MeHg. Temperature individual effects were significant for sediment, water, and only amphipod MeHg concentration, with higher temperature treatments indicating higher MeHg concentration. There were significant temperature x carbon interactions observed for sediment, dissolved, and oyster MeHg concentration. Sediment carbon reduction had greater influence than temperature on increasing MeHg concentrations in both the water column and biota. MeHg concentrations in the bulk sediment were not correlated with MeHg in the water column or in the biota, indicating that even when sediments are the only source of MeHg, bulk sediment measurements do not provide a good proxy for bioaccumulation and that the concentration in bulk sediments is not the primary determinant of MeHg entry into the food web. (C) 2019 Elsevier B.V. All rights reserved. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/97904 |
作者单位 | 1.Dartmouth Coll, Dept Biol Sci, 78 Coll St,LSC 6044, Hanover, NH 03755 USA; 2.Univ Connecticut, Dept Marine Sci, Groton, CT 06340 USA; 3.Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA USA; 4.Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA |
推荐引用方式 GB/T 7714 | Buckman, K. L.,Seelen, E. A.,Mason, R. P.,et al. Sediment organic carbon and temperature effects on methylmercury concentration: A mesocosm experiment[J],2019,666:1316-1326. |
APA | Buckman, K. L..,Seelen, E. A..,Mason, R. P..,Balcom, P..,Taylor, V. F..,...&Chen, C. Y..(2019).Sediment organic carbon and temperature effects on methylmercury concentration: A mesocosm experiment.SCIENCE OF THE TOTAL ENVIRONMENT,666,1316-1326. |
MLA | Buckman, K. L.,et al."Sediment organic carbon and temperature effects on methylmercury concentration: A mesocosm experiment".SCIENCE OF THE TOTAL ENVIRONMENT 666(2019):1316-1326. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。