Carbon fate in a large temperate human-impacted river system: Focus on benthic dynamics

被引:19
|
作者
Vilmin, Lauriane [1 ,2 ]
Flipo, Nicolas [1 ]
Escoffier, Nicolas [3 ,4 ]
Rocher, Vincent [5 ]
Groleau, Alexis [3 ]
机构
[1] PSL Res Univ, Geosci Dept, MINES ParisTech, Fontainebleau, France
[2] Univ Utrecht, Fac Geosci, Dept Earth Sci Geochem, Utrecht, Netherlands
[3] Univ Paris Diderot, IPGP, Sorbonne Paris Cite, Paris, France
[4] Ecole Polytech Fed Lausanne, Stream Biofilm & Ecosyst Res Lab, Lausanne, Switzerland
[5] SIAAP, Direct Dev & Prospect, Colombes, France
关键词
carbon; river export and metabolism; benthic and pelagic dynamics; sediment-water exchanges; human-impacted system; hydrobiogeochemical modeling; TRACING SUSPENDED SEDIMENT; COMBINED SEWER OVERFLOWS; WHOLE-STREAM METABOLISM; ORGANIC-MATTER DYNAMICS; SEINE RIVER; HYPORHEIC ZONE; ECOSYSTEM METABOLISM; HEADWATER STREAMS; WATER-QUALITY; PHOSPHORUS;
D O I
10.1002/2015GB005271
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Fluvial networks play an important role in regional and global carbon (C) budgets. The Seine River, from the Paris urban area to the entrance of its estuary (220km), is studied here as an example of a large human-impacted river system subject to temperate climatic conditions. We assess organic C (OC) budgets upstream and downstream from one of the world's largest wastewater treatment plants and for different hydrological conditions using a hydrobiogeochemical model. The fine representation of sediment accumulation on the river bed allows for the quantification of pelagic and benthic effects on OC export toward the estuary and on river metabolism (i.e., net CO2 production). OC export is significantly affected by benthic dynamics during the driest periods, when 25% of the inputs to the system is transformed or stored in the sediment layer. Benthic processes also substantially affect river metabolism under any hydrological condition. On average, benthic respiration accounts for one third of the total river respiration along the studied stretch (0.27 out of 0.86g C m(-2) d(-1)). Even though the importance of benthic processes was already acknowledged by the scientific community for headwater streams, these results stress the major influence of benthic dynamics, and thus of physical processes such as sedimentation and resuspension, on C cycling in downstream river systems. It opens the door to new developments in the quantification of C emissions by global models, whereby biogeochemical processing and benthic dynamics should be taken into account.
引用
收藏
页码:1086 / 1104
页数:19
相关论文
共 50 条
  • [1] Aquatic methane dynamics in a human-impacted river-floodplain of the Danube
    Sieczko, Anna Katarzyna
    Demeter, Katalin
    Singer, Gabriel Andreas
    Tritthart, Michael
    Preiner, Stefan
    Mayr, Magdalena
    Meisterl, Karin
    Peduzzi, Peter
    [J]. LIMNOLOGY AND OCEANOGRAPHY, 2016, 61 : S175 - S187
  • [2] Molecular and radiocarbon constraints on the fate of sedimentary organic carbon in a human-impacted river-dominated ocean margin
    Wang, Chenglong
    Zhang, Chuchu
    Zhang, Zhuoyue
    Liao, Qihang
    Zhang, Yang
    Wang, Ning
    Wang, Yaping
    Zou, Xinqing
    [J]. MARINE GEOLOGY, 2024, 473
  • [3] Understanding inorganic carbon dynamics in natural and human-impacted critical zones
    Jin, Lixin
    Ortiz, Anna
    Ogrinc, Nives
    Kaye, Jason
    Ma, Lin
    Hasenmueller, Elizabeth
    Sullivan, Pamela
    Brantley, Susan
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 253
  • [4] Seasonal and spatial variability of the partial pressure of carbon dioxide in the human-impacted Seine River in France
    Marescaux, Audrey
    Thieu, Vincent
    Borges, Alberto Vieira
    Garnier, Josette
    [J]. SCIENTIFIC REPORTS, 2018, 8
  • [5] Environmental filtering governs the spatial distribution of alien fishes in a large, human-impacted Mediterranean river
    Radinger, Johannes
    Diego Alcaraz-Hernandez, Juan
    Garcia-Berthou, Emili
    [J]. DIVERSITY AND DISTRIBUTIONS, 2019, 25 (05) : 701 - 714
  • [6] Carbon dioxide dynamics of Bhalswa Lake: a human-impacted urban wetland of Delhi, India
    Joshi, Prerna
    Siddaiah, N. Siva
    [J]. ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY, 2021, 23 (12) : 18116 - 18142
  • [7] Relationship between dissolved organic matter and phytoplankton community dynamics in a human-impacted subtropical river
    Liu, Qi
    Tian, Yulu
    Liu, Yang
    Yu, Ming
    Hou, Zhaojiang
    He, Kejian
    Xu, Hui
    Cui, Baoshan
    Jiang, Yuan
    [J]. JOURNAL OF CLEANER PRODUCTION, 2021, 289
  • [8] Carbon dioxide dynamics of Bhalswa Lake: a human-impacted urban wetland of Delhi, India
    Prerna Joshi
    N. Siva Siddaiah
    [J]. Environment, Development and Sustainability, 2021, 23 : 18116 - 18142
  • [9] Seasonal and spatial variability of the partial pressure of carbon dioxide in the human-impacted Seine River in France
    Audrey Marescaux
    Vincent Thieu
    Alberto Vieira Borges
    Josette Garnier
    [J]. Scientific Reports, 8
  • [10] Benthic invertebrate density, biomass, and instantaneous secondary production along a fifth-order human-impacted tropical river
    Fornero Aguiar, Anna Carolina
    Guecker, Bjoern
    Brauns, Mario
    Hille, Sandra
    Boechat, Iola Goncalves
    [J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2015, 22 (13) : 9864 - 9876