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carbon sequestering fungi

​by Bob Yirka
A group of scientists in Sweden has found that contrary to popular belief, most of the carbon that is sequestered in northern boreal forests comes about due to fungi that live on and in tree roots, rather than via dead needles, moss and leaf matter. In their paper published in the journal Science, the team describes their findings after taking soil samples from 30 islands in two lakes in northern Sweden. 
​Scientists have known for quite some time that northern forests sequester a lot of carbon—they pull in carbon dioxide after all, and "breath" out oxygen. But what the trees actually do with the carbon has been a matter of debate—most have suggested that it's likely carried to needles and leaves then eventually drops to the forest floor where over time decomposition causes it to leech into the soil. If that were the case, this new team of researchers reasoned, then the newest carbon deposits should appear closest to the surface of the forest floor. But this is not what they found—instead they discovered that newer deposits were more likely to be found at deeper levels in the soil. This was because, they learned, the trees were carrying much of the carbon they pulled in down to their roots (via sugars) where it was being sequestered by a type of fungi (ectomycorrhizal, aka mycorrhizal fungi) that eats the sugars and expels the residue into the soil.
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​In their study they found that 47 percent of soil carbon found on large island samples came about due to fungi, as did a whopping 70 percent of carbon in small island soil samples. Thus far, the team is only able to guess why there are such differences in the soils, but theorize it's likely due to differences in decomposition rates.

The amount of carbon stored in northern forests and how, is important because such trees cover approximately 11 percent of the Earth's surface and recent research has calculated that they hold approximately 16 percent of all worldwide sequestered carbon. And that's important, of course, because as global warming occurs, more sequestered carbon is released due to faster decomposition rates of dead forest matter. What's still not clear, however, is whether an increase in new forest growth due to warmer temperatures in more northern areas is likely to offset the increase in release of the sequestered carbon.


This article has been reprinted with permission from Phys.org.
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  • Members Login >>
    • Energy Today Archive >
      • Leading Change
      • Zero Emissions
      • Interactive Map
      • Floating Wind
      • Quick Hits
      • Steven Chu
      • Dan Poneman
      • Melanie Kenderdine
      • Chris Gould
      • UNSDSN
      • Data as a Tool
      • Change Through Organizing
      • MK Dorsey
      • Social Impact Start-Ups
      • Social Impact Entrepreneurs
      • A Network for the Heartland
      • Ecosystem Maps
      • Clean Energy By 2035
      • Bioremediation
      • Energy Storage-Video
      • Geothermal Energy
      • Commodity Chemical
      • PM Careers In Cleantech
      • Critical Breakthroughs
      • Losing Our Way
      • The Third Rail
      • Mapping the Seas
      • Low-Carbon Midwest
      • Smart Grid
      • Decarbonization
      • Getting to Zero
      • Climate Risk and Response
      • Our Infrastructure Is Being Built For a Climate That's Already Gone
      • Energy History
      • Battery Recycling
      • Quantum Waves
      • Coal REE
      • Fueling Big Rigs
      • Sandia Initiatives
      • Natural Gas Revolution
      • Duck Chart
      • Carbon Crossroads
      • Electric Cars
      • Energy Jobs Coalition
      • Indispensable Electricity
      • Post-Pandemic Predictions
      • Building Infrastructure
      • De-Prioritizing Cars
      • Vicki Hollub
      • Emily Kirsch
      • Lise Meitner
      • Lets Listen
      • COVID-19 and China Air
      • COVID-19 and Oil
      • COVID-19 and Solar
      • COVID-19 and Storage
      • Immorality of Waste
      • Rethinking "Disposable"
      • Second Life of Wind Turbines
      • Rare Earth Elements
      • Coal: Ashes to REM
      • Platinum and Cobalt
      • Geoengineering the Planet
      • An Atmospheric Industry
      • L.A. Hydrogen Plant
      • Pebbles, Sponges and Fans
      • CO2 Into Fuel
      • Superpower
      • The Fate of Food
      • Power Trip
      • Signs on the Earth
      • The Dreamt Land
      • Double Jeopardy
      • 7 Trends In Mineral Mining
      • The Prize - an excerpt
      • REM From Coal
      • The Deep Sea - The Next Gold Rush
      • Geothermal - Salvation or Earthquakes
      • The Myth of the Sustainabie City
      • The Emerging Circular Economy
      • How Cities Can Become More Resilient
      • Prosperity for One, Disaster for Another
      • The Real Energy Revolution
      • Carbon Loophole
      • Op-Ed: CO2 Reduction Thru Biofuels
      • The Sun Also Accelerates
      • Blowing Past the Zettabyte Era
      • Jack Voltaic: A Cyber Simulation Wargame
      • Managing Risk
      • From Russia, With Love
      • Ukraine: The Cyber-War Test Bed
      • 5G Requires A New Approach
      • Climate Change or Just Weather
      • Gone
      • Surge Flooding - Houston
      • Tug of War: Pollution Masks Impact of Climate Change
      • Climate Change Needs the Humanities
      • Nuclear Power: A Dilemma for Climate Change Philanthropy
      • Did California Trump the Clean Air Rollback
      • A Redundancy Dilemma
      • Double Jeopardy - a bonus excerpt
      • The War of the Currents
      • There Will Be Buyouts
      • Space Research Can Save the Planet
      • California's Oil Hypocrisy
      • Robert Merton
      • Africa: The New O&G Frontier
      • Why Oil Markets Aren't Reacting
      • Capitalism and Climate Change
      • The Frackers
      • Double Jeopardy
      • The Grid
      • Designing Climate Solutions
      • Making Tech Miracles
      • Best In Snow
      • Plastic Do-Over
      • The New Nuclear
      • Global Energy Insecurity
      • Renewable Energy and Geopolitics
      • The Myth of Energy Security
      • Residential Storage Security
      • An Insecure GND
      • Water, Food and Energy Security
      • The Transformation of the O&G Sector
      • Wild Fire
      • Ocean Pollution At High-Tide
      • CC's Fuzzy Math
      • A Climate Casualty of a Different Kind
      • Plants Store CO2 Too
      • 45Q for CarbonTech
      • CC's Potential Pitfalls
      • Klaus’s wacky idea
      • Permitting Geological Sequestration
      • A New Era of Energy Innovation
      • Investment in O&G Set to Soar
      • Old Capital Strategies, New Thinking
      • BofA Builds Green Revolution
      • We'd Rather Quit OPEC...
      • One Belt, One Road, No Plan
      • Coal fight turns ugly
      • As the World Warms
      • Oil Diplomacy
      • George Mitchell
      • Nicole Poindexter
      • Dan Kammen
      • Regina Mayor
      • Jessica Matthews
      • Bonus: Refining Reducing
      • Bonus: Energy Investment Trends
      • Bonus: The US has lost the rare earths
      • Bonus: Fossil-tech survey results
      • Bonus article: The New Age of Electricity
      • Bonus - Plan B: Geoengineering
      • Bonus: EXECUTIVE SUMMARY - Fossil-Tech
      • Bonus: Cyber Attack Timeline
      • Bonus: Employees - Cyber Threats and Assets
      • Bonus: Transportation, Jetson's Style
      • Bonus Article for Members
      • Bonus article - Infrastructure Failure
      • Bonus: Hydrogen Fuel From Coal
      • Bonus: Cities Not Meeting Targets
      • Bonus: Carbon Sequestering Fungi
      • Bonus: The Earthshot Prize
      • Bonus: A Radioactive Discovery