DOI: 10.1016/j.marpolbul.2018.02.043
Scopus记录号: 2-s2.0-85043347392
论文题名: Seasonal dynamics of trace elements in sediment and seagrass tissues in the largest Zostera japonica habitat, the Yellow River Estuary, northern China
作者: Lin H. ; Sun T. ; Adams M.P. ; Zhou Y. ; Zhang X. ; Xu S. ; Gu R.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
语种: 英语
英文关键词: Cumulative risk
; Seagrass
; Seasonal change
; Trace elements (TEs)
; Yellow River Estuary
; Zostera japonica
Scopus关键词: Bioaccumulation
; Biochemistry
; Biomass
; Ecology
; Ecosystems
; Estuaries
; Health risks
; Histology
; Lead
; Manganese
; Manganese removal (water treatment)
; Mercury (metal)
; Plants (botany)
; Risk assessment
; River pollution
; Rivers
; Sediments
; Tissue
; Above ground biomass
; Anthropogenic threats
; Seagrasses
; Seasonal changes
; Trace element accumulation
; Trace element concentrations
; Yellow River Estuary
; Zostera japonica
; Trace elements
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Trace element accumulation is an anthropogenic threat to seagrass ecosystems, which in turn may affect the health of humans who depend on these ecosystems. Trace element accumulation in seagrass meadows may vary temporally due to, e.g., seasonal patterns in sediment discharge from upstream areas. In addition, when several trace elements are present in sufficiently high concentrations, the risk of seagrass loss due to the cumulative impact of these trace elements is increased. To assess the seasonal variation and cumulative risk of trace element contamination to seagrass meadows, trace element (As, Cd, Cr, Cu, Pb, Hg, Mn and Zn) levels in surface sediment and seagrass tissues were measured in the largest Chinese Zostera japonica habitat, located in the Yellow River Estuary, at three sites and three seasons (fall, spring and summer) in 2014–2015. In all three seasons, trace element accumulation in the sediment exceeded background levels for Cd and Hg. Cumulative risk to Z. japonica habitat in the Yellow River Estuary, from all trace elements together, was assessed as “moderate” in all three seasons examined. Bioaccumulation of trace elements by seagrass tissues was highly variable between seasons and between above-ground and below-ground biomass. The variation in trace element concentration of seagrass tissues was much higher than the variation in trace element concentration of the sediment. In addition, for trace elements which tended to accumulate more in above-ground biomass than below-ground biomass (Cd and Mn), the ratio of above-ground to below-ground trace element concentration peaked at times corresponding to high water discharge and high sediment loads in the Yellow River Estuary. Overall, our results suggest that trace element accumulation in the sediment may not vary between seasons, but bioaccumulation in seagrass tissues is highly variable and may respond directly to trace elements in the water column. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88593
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, China; School of Chemical Engineering, The University of Queensland, St Lucia, Queensland, Australia; CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Recommended Citation:
Lin H.,Sun T.,Adams M.P.,et al. Seasonal dynamics of trace elements in sediment and seagrass tissues in the largest Zostera japonica habitat, the Yellow River Estuary, northern China[J]. Marine Pollution Bulletin,2018-01-01