globalchange  > 过去全球变化的重建
DOI: 10.1016/j.marpolbul.2014.05.057
Scopus记录号: 2-s2.0-84905754162
论文题名:
Sediment-preserved diatom assemblages can distinguish a petroleum activity signal separately from the nutrient signal of the Mississippi River in coastal Louisiana
作者: Parsons M.L.; Turner R.E.; Overton E.B.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2014
卷: 85, 期:1
起始页码: 164
结束页码: 171
语种: 英语
英文关键词: Eutrophication ; Gulf of Mexico ; Hypoxia ; Oil spill ; Phytoplankton
Scopus关键词: Barium ; Eutrophication ; Extraction ; Oil spills ; Phytoplankton ; Canonical Correspondence Analysis ; Coastal Louisiana ; Diatom assemblage ; Gulf of Mexico ; Hypoxia ; Mississippi river ; Multi-dimensional scaling ; Petroleum extraction ; River pollution ; barium ; hopanoid ; lead 210 ; nitrate ; petroleum derivative ; silicate ; nitrogen ; petroleum ; pollutant ; water pollutant ; barium ; concentration (composition) ; diatom ; eutrophication ; hypoxia ; nitrogen ; nutrient ; oil spill ; phytoplankton ; sediment core ; Actinoptychus senarius ; Amphora spp ; article ; Aulacoseira spp ; Bacillaria paxillifer ; Biddulphia ; bulk density ; Cerataulina bicornis ; concentration (parameters) ; Coscinodiscus spp ; Cyclotella ; diatom ; Diploneis bombus ; Ditylum brightwellii ; Melosira ; Navicula peregrina ; nonhuman ; nutrient loading ; offshore oil industry ; Opephora ; Paralia sulcata ; Pinnularia ; population abundance ; population distribution ; Pseudo nitzschia delicatissima ; Pseudosolenia calcar avis ; river ecosystem ; sediment ; sedimentation rate ; Skeletonema pseudocostatum ; Thalassionema nitzschioides ; Tryblionella granulata ; United States ; water content ; analysis ; diatom ; environmental monitoring ; eutrophication ; geography ; Gulf of Mexico ; isolation and purification ; occupational accident ; oil spill ; pollutant ; population dynamics ; river ; sediment ; water pollutant ; Atlantic Ocean ; Gulf of Mexico ; Louisiana ; Mississippi River ; United States ; Actinoptychus senarius ; Bacillariophyta ; Pseudo-nitzschia delicatissima ; Accidents, Occupational ; Diatoms ; Environmental Monitoring ; Environmental Pollutants ; Eutrophication ; Geography ; Geologic Sediments ; Gulf of Mexico ; Louisiana ; Nitrogen ; Petroleum ; Petroleum Pollution ; Population Dynamics ; Rivers ; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science ; Earth and Planetary Sciences: Oceanography ; Environmental Science: Pollution
英文摘要: We analyzed the preserved diatom assemblages in dated sediment cores collected from five locations in the Louisiana Bight to test if there was a signature of petroleum extraction activities (hopanes and barium) distinct from the well-documented effects of nutrient loading. The results of a multi-dimensional scaling analysis indicate that the diatom assemblage changes documented throughout the 40. year record could be explained by three variables: barium and hopanes concentrations, and Mississippi River nitrogen loading. The results of a canonical correspondence analysis demonstrated that these signals could be distinguished through correlations with specific diatom species. The abundance of Actinoptychus senarius, for example, was negatively correlated with barium and the Pseudo- nitzschia delicatissima complex was positively correlated with nitrogen loading. These results provide a "proof-of-concept" demonstration that diatom assemblages preserved in the sediments can be used to study the effects of petroleum extraction activities, and that these 'petroleum signals' may be distinguished from other significant influences such as nutrient loading. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85374
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: Coastal Watershed Institute, Florida Gulf Coast University, 10501 FGCU Blvd. South, Fort Myers, FL 33965, United States; Department of Oceanography and Coastal Sciences, Coastal Ecology Institute, Louisiana State University, Baton Rouge, LA 70803, United States; Department of Environmental Studies, Louisiana State University, Baton Rouge, LA 70803, United States

Recommended Citation:
Parsons M.L.,Turner R.E.,Overton E.B.. Sediment-preserved diatom assemblages can distinguish a petroleum activity signal separately from the nutrient signal of the Mississippi River in coastal Louisiana[J]. Marine Pollution Bulletin,2014-01-01,85(1)
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