DOI: 10.1016/j.marpolbul.2016.04.046
Scopus记录号: 2-s2.0-85006141548
论文题名: Nutrient regeneration susceptibility under contrasting sedimentary conditions from the Rio de Janeiro coast, Brazil
作者: Matos C.R.L. ; Mendoza U. ; Diaz R. ; Moreira M. ; Belem A.L. ; Metzger E. ; Albuquerque A.L.S. ; Machado W.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 108, 期: 2018-01-02 起始页码: 297
结束页码: 302
语种: 英语
英文关键词: Diagenesis
; Eutrophication
; Nutrients
; Pore water
; Remobilization modeling
Scopus关键词: Eutrophication
; Grain size and shape
; Sedimentology
; Silicates
; Water
; Continuous production
; Diagenesis
; Orders of magnitude
; Pore waters
; Production and consumption
; Remobilization
; Sediment pore water
; Southeastern Brazil
; Nutrients
; ammonia
; calcium carbonate
; carbon
; carbon 13
; nitrate
; nitrogen
; nitrogen 15
; organic matter
; phosphate
; phosphorus
; silicate
; water
; carbon
; nitrogen
; phosphorus
; sea water
; water pollutant
; coastal sediment
; diagenesis
; eutrophication
; modeling
; porewater
; remobilization
; sediment chemistry
; Article
; Brazil
; controlled study
; eutrophication
; fertilization
; nutrient
; nutrient supply
; particle size
; sediment
; total organic carbon
; water pollution
; water quality
; analysis
; chemistry
; sediment
; theoretical model
; water pollutant
; Brazil
; Rio de Janeiro [Brazil]
; Brazil
; Carbon
; Eutrophication
; Geologic Sediments
; Models, Theoretical
; Nitrogen
; Phosphorus
; Seawater
; 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: Dissolved silicate (DSi), NH4 +, NO3 - and PO4 3- susceptibility to be exchanged between sediment pore waters and overlying waters was evaluated in Jurujuba Sound (JS station) and Coroa Grande Sound (CGS station), southeastern Brazil. Sedimentary elemental (C, N and P) and isotopic (δ13C and δ15N) compositions evidenced stronger anthropogenic fertilization in JS station. Net NO3 - influxes from overlying waters occurred, which was two orders of magnitude higher under the more fertilized condition. This condition resulted in 6-13-times higher net effluxes of NH4 +, DSi and PO4 3- to overlying waters. Vertical alternation between production and consumption processes in pore waters contributed for a more limited regeneration in CGS station. This was associated with diagenetic responses to sedimentary grain size variability in deeper layers and biological disturbance in upper layers. Nearly continuous production of NH4 +, DSi and PO4 3- in pore waters implied in intensified susceptibility to remobilization under the eutrophic condition of JS station. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86994
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: Programa de Geoquímica Ambiental, Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, RJ, Brazil; Departamento de Engenharia Agrícola e do Meio Ambiente, Escola de Engenharia, Universidade Federal Fluminense, São Domingos, Niterói, RJ, Brazil; Laboratoire des Bio-Indicateurs Actuels et Fossiles, UMR6112 CNRS LPG-BIAF, Université d'Angers, 2 Boulevard Lavoisier, Angers Cedex, France
Recommended Citation:
Matos C.R.L.,Mendoza U.,Diaz R.,et al. Nutrient regeneration susceptibility under contrasting sedimentary conditions from the Rio de Janeiro coast, Brazil[J]. Marine Pollution Bulletin,2016-01-01,108(2018-01-02)