* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Thursday, September 4, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    ITV Studios Launches New Entertainment Label – Global Bulletin – IMDb

    ITV Studios Unveils Exciting New Entertainment Label

    TS Entertainment bringing Malibu Jack’s to former Owensboro mall – Lane Report

    TS Entertainment Launches Malibu Jack’s at Former Owensboro Mall Location

    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Credo Technology Group Holding Ltd. (CRDO) Surpasses Q1 Earnings and Revenue Estimates – Yahoo Finance

    Credo Technology Group Surpasses Q1 Earnings and Revenue Expectations

    The Economist is hiring a science and technology correspondent – The Economist

    Exciting Opportunity: Become Our Next Science and Technology Correspondent!

    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    New Technology from Ramsey Theory Group Brings Diagnostic Testing and Telehealth Directly into Patients’ Homes – Yahoo Finance

    Revolutionary Ramsey Theory Technology Delivers Diagnostic Testing and Telehealth Right to Your Doorstep

    China’s CATL sells stake in Finnish subcontract car manufacturer – Reuters

    China’s CATL Sells Stake in Finnish Auto Supplier in Strategic Move

    This Secret Technology Will Make The IPhone 17 Super Thin Air – VOI.ID

    How This Breakthrough Technology Will Make the iPhone 17 Incredibly Thin and Lightweight

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    ITV Studios Launches New Entertainment Label – Global Bulletin – IMDb

    ITV Studios Unveils Exciting New Entertainment Label

    TS Entertainment bringing Malibu Jack’s to former Owensboro mall – Lane Report

    TS Entertainment Launches Malibu Jack’s at Former Owensboro Mall Location

    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Credo Technology Group Holding Ltd. (CRDO) Surpasses Q1 Earnings and Revenue Estimates – Yahoo Finance

    Credo Technology Group Surpasses Q1 Earnings and Revenue Expectations

    The Economist is hiring a science and technology correspondent – The Economist

    Exciting Opportunity: Become Our Next Science and Technology Correspondent!

    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    New Technology from Ramsey Theory Group Brings Diagnostic Testing and Telehealth Directly into Patients’ Homes – Yahoo Finance

    Revolutionary Ramsey Theory Technology Delivers Diagnostic Testing and Telehealth Right to Your Doorstep

    China’s CATL sells stake in Finnish subcontract car manufacturer – Reuters

    China’s CATL Sells Stake in Finnish Auto Supplier in Strategic Move

    This Secret Technology Will Make The IPhone 17 Super Thin Air – VOI.ID

    How This Breakthrough Technology Will Make the iPhone 17 Incredibly Thin and Lightweight

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Reservoir construction may be reducing carbon storage in ocean sediments

November 27, 2023
in Science
Reservoir construction may be reducing carbon storage in ocean sediments
Share on FacebookShare on Twitter

Reservoir construction reducing carbon storage in ocean sediments

Spatial distribution of carbon stocks and their accumulation rate in the study region of the South Yellow Sea and East China Sea. Credit: Ma et al. 2023.

Carbon storage has been a key focus in recent years to draw down natural and anthropogenic sources of carbon dioxide and help the fight against global warming, and particularly focuses on terrestrial forests and soils, as well as wetland mangroves and seagrasses.

An alternative carbon reservoir can be found in marine sediments, such as those on marginal continental shelves, which account for only 8% of the world’s ocean area but have the capacity to store 80% of the planet’s organic carbon (126.2 teragrams per year). Marine organic carbon is derived from phytoplankton and the metabolic actions of microbes in sediments, while terrestrial sources from riverine transport and coastal erosion also bring carbon-rich material to the ocean floor.

New research, published in Frontiers in Marine Science, has calculated carbon storage in the western Pacific Ocean since 1855, noting specifically the negative impact of reservoir construction on carbon stocks.

Dr. Haili Ma, of the Ocean University of China, and colleagues took 17 sediment cores from the South Yellow Sea and East China Sea, measuring for total organic carbon (the concentration of organic carbon in a sample, derived from nature through plants, for example).

A number of key trends were identified in the data: 1) declining carbon stocks between 1855 and 1950, attributed to extreme flooding in 1851 to 1855 causing the Yellow River to change its course and relocate the terminating estuary; 2) increased carbon stocks post-1950 due to wind-enhanced transport of sediment by the South Shandong Coastal Current during winter monsoons; and 3) reduced carbon stocks since 1990 due to lower sediment transport along the Yangtze River with reservoirs and dams built upstream.

The research team calculated the global average carbon stocks in marine sediments to be 66.6 tons per hectare (t/ha), while that of the South Yellow Sea was reduced by 32% to 45.2 t/ha. Despite this, sediment accumulation rates are comparatively higher in the region (2.7 mm/yr), producing a carbon stock accumulation rate of 0.31 t/ha/yr.

Combined with the large size of the marginal marine area on the continental shelf here (4.7 million km2), the scientists estimate a staggering 0.75 petagrams of carbon could be stored. Nevertheless, this is a fraction of the atmospheric carbon growth rate, calculated to be 5.4 ± 0.2 petagrams per year, of which only 40% had the capacity to be absorbed by the oceans.

Reservoir construction reducing carbon storage in ocean sediments

Changes in total organic carbon, sample bulk dry density and carbon stock per centimeter for the 17 sample cores, showing changes downcore and therefore back through time. Credit: Ma et al. 2023.

Within the 17 sediment cores, total organic carbon content ranged 0.12–1.31%, with a general small decrease downcore and a negative correlation with dry bulk density, referencing the compaction of the sediments and the influence of grain size on weight and volume. There is a noticeable trend in declining total organic carbon content from north to south through the study area, matching an increase in sediment grain size.

Meanwhile, the carbon reservoir stocks varied 0.12–0.83 t/ha across the study region, but showed a noticeable decline since the early 1990s, following construction of reservoirs in the Ou River basin in 1988 and 1989, whose course terminates in the sampled seas. Since then, further construction has seen the Three Gorges Dam built in 2003 along the Yangtze River, reducing sediment transport by 63% compared to 1950 and therefore the capacity to transport carbon for burial on the marginal marine shelf.

This research is important as it highlights humanity’s interference in other areas of the environment having unforeseen circumstances on the carbon cycle. The siting of dams and reservoirs in years to come must take into consideration the negative impact on carbon stocks, and therefore global warming by allowing organic carbon to re-enter the atmosphere, in addition to more localized effects.

More information:
Haili Ma et al, Carbon stocks in the mud areas of the Chinese marginal seas, Frontiers in Marine Science (2023). DOI: 10.3389/fmars.2023.1282891

© 2023 Science X Network

Citation:
Reservoir construction may be reducing carbon storage in ocean sediments (2023, November 26)
retrieved 26 November 2023
from https://phys.org/news/2023-11-reservoir-carbon-storage-ocean-sediments.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-11-reservoir-carbon-storage-ocean-sediments.html

Tags: ConstructionReservoirscience
Previous Post

Limits for quantum computers: Perfect clocks are impossible, research finds

Next Post

A fullerene-like molecule made entirely of metal atoms

Potential caterpillar mimicry in a tropical hummingbird – Falk – 2025 – Ecology – ESA Journals

Tropical Hummingbird’s Surprising Caterpillar Mimicry Revealed

September 4, 2025
Degrees of Science: Healthy Aging – KWTX

Unlocking the Secrets to Healthy Aging: A Science-Based Guide

September 4, 2025
Podcast: Blame, bad drivers, and ‘safety science’ – BikePortland

Podcast: Blame, bad drivers, and ‘safety science’ – BikePortland

September 4, 2025
If you want your 60s to be some of the best years of your life, say goodbye to these 5 behaviors – VegOut

If you want your 60s to be some of the best years of your life, say goodbye to these 5 behaviors – VegOut

September 4, 2025
Credo Technology Group Holding Ltd. (CRDO) Surpasses Q1 Earnings and Revenue Estimates – Yahoo Finance

Credo Technology Group Surpasses Q1 Earnings and Revenue Expectations

September 4, 2025

NFL Week 1 Power Rankings: Eagles Take Early Lead, But Bills Poised to Claim Ultimate Crown

September 4, 2025
Xi Parades Military Strength as Trump Accuses Him of Conspiring With Putin and Kim – The New York Times

Xi Unveils Military Strength as Trump Levels Accusations of Alliances with Putin and Kim

September 4, 2025
Trump tariffs and the Fed: Fate of U.S. economy may lie with the Supreme Court – Axios

How the Supreme Court Could Decide the Future of the U.S. Economy Amid Trump Tariffs and Fed Moves

September 4, 2025
ITV Studios Launches New Entertainment Label – Global Bulletin – IMDb

ITV Studios Unveils Exciting New Entertainment Label

September 4, 2025
RFK Jr. is spreading a reckless myth about SSRIs and mass shootings – MSNBC News

RFK Jr. Fuels Dangerous Myth Linking SSRIs to Mass Shootings

September 4, 2025

Categories

Archives

September 2025
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930 
« Aug    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (806)
  • Economy (824)
  • Entertainment (21,704)
  • General (16,848)
  • Health (9,865)
  • Lifestyle (839)
  • News (22,149)
  • People (826)
  • Politics (831)
  • Science (16,035)
  • Sports (21,323)
  • Technology (15,805)
  • World (805)

Recent News

Potential caterpillar mimicry in a tropical hummingbird – Falk – 2025 – Ecology – ESA Journals

Tropical Hummingbird’s Surprising Caterpillar Mimicry Revealed

September 4, 2025
Degrees of Science: Healthy Aging – KWTX

Unlocking the Secrets to Healthy Aging: A Science-Based Guide

September 4, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version