DOI: 10.1016/j.marpolbul.2016.07.027
Scopus记录号: 2-s2.0-84990976861
论文题名: Elemental composition, distribution and control of biogenic silica in the anthropogenically disturbed and pristine zone inter-tidal sediments of Indian Sundarbans mangrove-estuarine complex
作者: Dhame S. ; Kumar A. ; Ramanathan A.L. ; Chaudhari P.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 111, 期: 2018-01-02 起始页码: 68
结束页码: 85
语种: 英语
英文关键词: Biogenic silica
; Organic carbon
; Sediment geochemistry
; Sundarbans mangroves
; Total phosphorus
Scopus关键词: Alkalinity
; Estuaries
; Geochemistry
; Land use
; Multivariant analysis
; Organic carbon
; Phosphorus
; Sediments
; Silica
; Spatial distribution
; Anthropogenic influence
; Biogenic silica
; Biogeochemical process
; Chemical and biologicals
; Multivariate statistics
; Sediment geochemistries
; Sundarbans
; Total phosphorus
; Surficial sediments
; aluminum
; biogenic silica
; chromium
; cobalt
; copper
; iron
; magnesium
; manganese
; nickel
; organic carbon
; phosphorus
; potassium
; silicon dioxide
; sodium
; surface water
; titanium
; unclassified drug
; zinc
; carbon
; metal
; phosphorus
; silicon dioxide
; water pollutant
; anthropogenic effect
; biogenic mineral
; biogeochemistry
; chemical composition
; estuarine sediment
; mangrove
; organic carbon
; phosphorus
; physicochemical property
; pristine environment
; sediment chemistry
; silica
; spatial distribution
; surficial sediment
; Article
; biogeochemistry
; clay
; concentration (parameters)
; controlled study
; estuary
; hydrodynamics
; intertidal zone
; land use
; mangrove
; nonhuman
; sea pollution
; sediment
; analysis
; chemistry
; environmental monitoring
; India
; procedures
; spatial analysis
; water pollutant
; wetland
; India
; Matla Estuary
; Sundarbans National Park
; West Bengal
; Rhizophoraceae
; Carbon
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; India
; Metals
; Phosphorus
; Silicon Dioxide
; Spatial Analysis
; Water Pollutants, Chemical
; Wetlands
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Spatial distribution and interrelationship among organic nutrients – silica and carbon – and various lithogenic elements were investigated in the surficial sediments of Matla estuary and Core Zone of Indian Sundarbans Reserve Forest using spatial analysis and multivariate statistics. Biogenic silica (BSi), an important parameter for coastal biogeochemisry, was measured using Si-time alkaline leaching method. BSi concentration ranged from 0.01% to 0.85% with higher concentrations in upstream region of Matla estuary and attenuated values towards the bay, seemingly due to changes in hydrodynamics and land use conditions. Spatial distribution of BSi did not exhibit significant correlation with sediment parameters of organic carbon (OC), elemental composition and clay content. However, it showed significant contrasting trends with total phosphorus (TP) and total silica of human influenced Matla estuary sediments as well as the dissolved silica (DSi) of its surface waters. Anthropogenic influence on sediment geochemistry is discernable with the presence of higher concentrations of organic and inorganic elements in Matla estuary than in Core Zone sediments. Spatial variation trends are often challenging to interpret due to multiple sources of input, varying energy and salinity conditions and constant physical, chemical and biological alterations occurring in the environment. Nonetheless, it is certain that anthropogenic activities have a substantial influence on biogeochemical processes of Sundarbans mangrove-estuarine complex and potentially the coastal ocean. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86735
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: School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India; Department of Environmental Science, Central University of Rajasthan, Ajmer, Kishangarh, Rajasthan, India; Department of Environmental Science, University of Calcutta, Ballygunge Campus, Kolkata, India
Recommended Citation:
Dhame S.,Kumar A.,Ramanathan A.L.,et al. Elemental composition, distribution and control of biogenic silica in the anthropogenically disturbed and pristine zone inter-tidal sediments of Indian Sundarbans mangrove-estuarine complex[J]. Marine Pollution Bulletin,2016-01-01,111(2018-01-02)