Decade of experimental permafrost thaw reduces turnover of young carbon and increases losses of old carbon, without affecting the net carbon balance.

Global Change Biology
Carolina OlidEllen Dorrepaal

Abstract

Thicker snowpacks and their insulation effects cause winter-warming and invoke thaw of permafrost ecosystems. Temperature-dependent decomposition of previously frozen carbon (C) is currently considered one of the strongest feedbacks between the Arctic and the climate system, but the direction and magnitude of the net C balance remains uncertain. This is because winter effects are rarely integrated with C fluxes during the snow-free season and because predicting the net C balance from both surface processes and thawing deep layers remains challenging. In this study, we quantified changes in the long-term net C balance (net ecosystem production) in a subarctic peat plateau subjected to 10 years of experimental winter-warming. By combining 210 Pb and 14 Cdating of peat cores with peat growth models, we investigated thawing effects on year-round primary production and C losses through respiration and leaching from both shallow and deep peat layers. Winter-warming and permafrost thaw had no effect on the net C balance, but strongly affected gross C fluxes. Carbon losses through decomposition from the upper peat were reduced as thawing of permafrost induced surface subsidence and subsequent waterlogging. However, primary production w...Continue Reading

References

Mar 13, 2014·Global Change Biology·C C TreatS Frolking
May 9, 2014·Ecology·Susan M NataliKathryn G Crummer
Mar 17, 2015·Proceedings of the National Academy of Sciences of the United States of America·Charles D KovenWilliam J Riley
Apr 10, 2015·Nature·E A G SchuurJ E Vonk
Oct 7, 2015·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·C D KovenM Turetsky
Oct 18, 2015·The Science of the Total Environment·Carolina OlidJonatan Klaminder
Dec 10, 2015·Scientific Reports·Graeme T SwindlesJennifer M Galloway
Dec 25, 2015·Proceedings of the National Academy of Sciences of the United States of America·Donatella ZonaWalter C Oechel
Feb 7, 2016·Global Change Biology·Elena Blanc-BetesMiquel A Gonzalez-Meler
Jul 1, 2016·Global Change Biology·Miriam C JonesStephanie Ewing
Mar 28, 2018·Proceedings of the National Academy of Sciences of the United States of America·A David McGuireQianlai Zhuang
Jul 30, 2018·The Science of the Total Environment·Philipp R SemenchukElisabeth J Cooper
Jan 18, 2019·Nature Communications·Boris K BiskabornHugues Lantuit
Jan 27, 2019·Global Change Biology·Carolina VoigtChristina Biasi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.