Diagenetic alterations of amino acids and organic matter in the upper Pearl River Estuary surface sediments

被引:10
|
作者
Zhang, J. [1 ]
Zhang, R. [1 ]
Wu, Q. [1 ]
Xu, N. [1 ]
机构
[1] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
关键词
COASTAL WATERS; AMAZON-RIVER; BACTERIAL; NITROGEN; CARBON; INDICATORS; ACCUMULATION; STATE;
D O I
10.5194/bg-9-555-2012
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The objective of this study was to investigate the diagenetic alteration of sediment organic matter (OM) in the upper Pearl River Estuary. Sediment analyses were conducted for three size fractions of OM, including coarse particulate OM (CPOM), fine particulate OM (FPOM), and ultrafiltered dissolved OM (UDOM). Results showed that the highest and lowest carbon (C): nitrogen (N) ratios were in CPOM and UDOM, respectively, indicating that CPOM was relatively enriched in organic C. The highest average total N content in the FPOM fraction showed that FPOM was enriched in N-containing molecules. Our study showed that the "size-reactivity continuum" model was applicable to sediment particulate and dissolved OM. Distributions of amino acids and their D-isomers among the sediment fractions indicated that the amino acid-based diagenetic index, C:N ratio, and percentage of total N represented by total hydrolysable amino acids could be used as diagenetic indicators. Furthermore, the diagenetic state of sediment OM could also be characterized by C- and N-normalized yields of total D-amino acids, and C- and N-normalized yields of D-alanine, D-glutamic acid, and D-serine.
引用
收藏
页码:555 / 564
页数:10
相关论文
共 50 条
  • [1] Organic matter distribution in the modern sediments of the Pearl River Estuary
    Strong, David J.
    Flecker, Rachel
    Valdes, Paul J.
    Wilkinson, Ian P.
    Rees, John G.
    Zong, Yong Qiang
    Lloyd, Jeremy M.
    Garrett, Edmund
    Pancost, Richard D.
    ORGANIC GEOCHEMISTRY, 2012, 49 : 68 - 82
  • [2] The source and diagenesis of sediment organic matter in the upper Pearl River Estuary as indicated by amino sugars
    Wu, Qunhe
    Zhang, Jiaying
    Zhang, Renduo
    Xu, Ni
    Li, Chongyang
    JOURNAL OF SOILS AND SEDIMENTS, 2013, 13 (05) : 943 - 952
  • [3] The source and diagenesis of sediment organic matter in the upper Pearl River Estuary as indicated by amino sugars
    Qunhe Wu
    Jiaying Zhang
    Renduo Zhang
    Ni Xu
    Chongyang Li
    Journal of Soils and Sediments, 2013, 13 : 943 - 952
  • [4] Organic matter degradation in surface sediments of the Changjiang estuary: Evidence from amino acids
    Wang, Kui
    Chen, Jianfang
    Jin, Haiyan
    Li, Hongliang
    Zhang, Weiyan
    SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 637 : 1004 - 1013
  • [5] Production and Transformation of Dissolved and Particulate Organic Matter as Indicated by Amino Acids in the Pearl River Estuary, China
    Li, Xiaolin
    Liu, Zhanfei
    Chen, Wei
    Wang, Lei
    He, Biyan
    Wu, Kai
    Gu, Shuai
    Jiang, Peng
    Huang, Bangqin
    Dai, Minhan
    JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 2018, 123 (12) : 3523 - 3537
  • [6] The response of bacterial communities to organic matter in the surface sediment of the Pearl River estuary
    Zhang, Tingting
    Wang, Peng
    PLANKTON & BENTHOS RESEARCH, 2022, 17 (01): : 45 - 56
  • [7] Lidar monitoring of organic matter in the Pearl River Estuary
    Chen, Peng
    Pan, Delu
    Hu, Chuanwen
    Mao Zhihua
    OCEAN REMOTE SENSING AND MONITORING FROM SPACE, 2014, 9261
  • [8] Persistent organic pollution characterization of sediments in Pearl River estuary
    Chau, K. W.
    CHEMOSPHERE, 2006, 64 (09) : 1545 - 1549
  • [9] Lipid biomarkers in suspended particulate matter and surface sediments in the Pearl River Estuary, a subtropical estuary in southern China
    Guo, Wei
    Jia, Guodong
    Ye, Feng
    Xiao, Huayun
    Zhang, Zhongyi
    SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 646 : 416 - 426
  • [10] Sources and preservation dynamics of organic matter in surface sediments of Narmada River, India - Illustrated by amino acids
    Fernandes, Dearlyn
    Wu, Ying
    Shirodkar, Prabhaker Vasant
    Pradhan, Umesh Kumar
    Zhang, Jing
    Limbu, Samwel Mchele
    JOURNAL OF MARINE SYSTEMS, 2020, 201