Global perturbation of organic carbon cycling by river damming

Nature Communications
Taylor MaavaraPhilippe Van Cappellen

Abstract

The damming of rivers represents one of the most far-reaching human modifications of the flows of water and associated matter from land to sea. Dam reservoirs are hotspots of sediment accumulation, primary productivity (P) and carbon mineralization (R) along the river continuum. Here we show that for the period 1970-2030, global carbon mineralization in reservoirs exceeds carbon fixation (P<R); the global P/R ratio, however, varies significantly, from 0.20 to 0.58 because of the changing age distribution of dams. We further estimate that at the start of the twenty-first century, in-reservoir burial plus mineralization eliminated 4.0±0.9 Tmol per year (48±11 Tg C per year) or 13% of total organic carbon (OC) carried by rivers to the oceans. Because of the ongoing boom in dam building, in particular in emerging economies, this value could rise to 6.9±1.5 Tmol per year (83±18 Tg C per year) or 19% by 2030.

References

Apr 1, 1977·Biotechnology and Bioengineering·N Nyholm
Mar 14, 2007·The Science of the Total Environment·Josette Garnier, Gilles Billen
Mar 23, 2007·Geochemical Transactions·Stefan Hunger, Liane G Benning
Aug 10, 2007·Geochemical Transactions·FuShun WangXiuguo Wei
Jan 21, 1977·Science·D W Schindler
Dec 7, 2007·Bioresource Technology·B E RotterJ S Small
Dec 9, 2015·Proceedings of the National Academy of Sciences of the United States of America·Taylor MaavaraPhilippe Van Cappellen

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Citations

Oct 30, 2018·Global Change Biology·Taylor MaavaraPierre Regnier
Dec 8, 2019·Scientific Reports·Christiane ZarflKlement Tockner
Oct 26, 2018·Scientific Reports·Grace M WilkinsonMichael L Pace
Nov 13, 2019·Environmental Science and Pollution Research International·Juhua YuYinlong Zhang
May 18, 2020·Environmental Science and Pollution Research International·Haojun DengPeng Xu
Dec 15, 2018·The Science of the Total Environment·Emily B GrahamTimothy D Scheibe
Apr 16, 2021·Science Advances·Nianzhi JiaoLouis Legendre
May 26, 2021·The Science of the Total Environment·Xingcheng YanJosette Garnier
Dec 3, 2021·Environmental Science & Technology·Wim J van HoekJack J Middelburg
Nov 19, 2021·The Science of the Total Environment·Omme K NaynaJi-Hyung Park

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