Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils
Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called "priming effect...
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ftcdlib:oai:escholarship.org:ark:/13030/qt4nk6k93c 2023-09-05T13:16:09+02:00 Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils Wild, Birgit Gentsch, Norman Čapek, Petr Diáková, Kateřina Alves, Ricardo J Eloy Bárta, Jiři Gittel, Antje Hugelius, Gustaf Knoltsch, Anna Kuhry, Peter Lashchinskiy, Nikolay Mikutta, Robert Palmtag, Juri Schleper, Christa Schnecker, Jörg Shibistova, Olga Takriti, Mounir Torsvik, Vigdis L Urich, Tim Watzka, Margarete Šantrůčková, Hana Guggenberger, Georg Richter, Andreas 25607 2016-01-01 https://escholarship.org/uc/item/4nk6k93c unknown eScholarship, University of California qt4nk6k93c https://escholarship.org/uc/item/4nk6k93c public Scientific Reports, vol 6, iss 1 article 2016 ftcdlib 2023-08-21T18:06:05Z Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called "priming effect" might significantly alter the ecosystem C balance. In this study, we provide first mechanistic insights into the susceptibility of SOM decomposition in arctic permafrost soils to priming. By comparing 119 soils from four locations across the Siberian Arctic that cover all horizons of active layer and upper permafrost, we found that an increased availability of plant-derived organic C particularly stimulated decomposition in subsoil horizons where most of the arctic soil carbon is located. Considering the 1,035 Pg of arctic soil carbon, such an additional stimulation of decomposition beyond the direct temperature effect can accelerate net ecosystem C losses, and amplify the positive feedback to global warming. Article in Journal/Newspaper Arctic Global warming permafrost University of California: eScholarship Arctic |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
description |
Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect, decomposition can also be indirectly stimulated via increased plant productivity and plant-soil C allocation, and this so called "priming effect" might significantly alter the ecosystem C balance. In this study, we provide first mechanistic insights into the susceptibility of SOM decomposition in arctic permafrost soils to priming. By comparing 119 soils from four locations across the Siberian Arctic that cover all horizons of active layer and upper permafrost, we found that an increased availability of plant-derived organic C particularly stimulated decomposition in subsoil horizons where most of the arctic soil carbon is located. Considering the 1,035 Pg of arctic soil carbon, such an additional stimulation of decomposition beyond the direct temperature effect can accelerate net ecosystem C losses, and amplify the positive feedback to global warming. |
format |
Article in Journal/Newspaper |
author |
Wild, Birgit Gentsch, Norman Čapek, Petr Diáková, Kateřina Alves, Ricardo J Eloy Bárta, Jiři Gittel, Antje Hugelius, Gustaf Knoltsch, Anna Kuhry, Peter Lashchinskiy, Nikolay Mikutta, Robert Palmtag, Juri Schleper, Christa Schnecker, Jörg Shibistova, Olga Takriti, Mounir Torsvik, Vigdis L Urich, Tim Watzka, Margarete Šantrůčková, Hana Guggenberger, Georg Richter, Andreas |
spellingShingle |
Wild, Birgit Gentsch, Norman Čapek, Petr Diáková, Kateřina Alves, Ricardo J Eloy Bárta, Jiři Gittel, Antje Hugelius, Gustaf Knoltsch, Anna Kuhry, Peter Lashchinskiy, Nikolay Mikutta, Robert Palmtag, Juri Schleper, Christa Schnecker, Jörg Shibistova, Olga Takriti, Mounir Torsvik, Vigdis L Urich, Tim Watzka, Margarete Šantrůčková, Hana Guggenberger, Georg Richter, Andreas Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
author_facet |
Wild, Birgit Gentsch, Norman Čapek, Petr Diáková, Kateřina Alves, Ricardo J Eloy Bárta, Jiři Gittel, Antje Hugelius, Gustaf Knoltsch, Anna Kuhry, Peter Lashchinskiy, Nikolay Mikutta, Robert Palmtag, Juri Schleper, Christa Schnecker, Jörg Shibistova, Olga Takriti, Mounir Torsvik, Vigdis L Urich, Tim Watzka, Margarete Šantrůčková, Hana Guggenberger, Georg Richter, Andreas |
author_sort |
Wild, Birgit |
title |
Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
title_short |
Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
title_full |
Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
title_fullStr |
Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
title_full_unstemmed |
Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
title_sort |
plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/4nk6k93c |
op_coverage |
25607 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming permafrost |
genre_facet |
Arctic Global warming permafrost |
op_source |
Scientific Reports, vol 6, iss 1 |
op_relation |
qt4nk6k93c https://escholarship.org/uc/item/4nk6k93c |
op_rights |
public |
_version_ |
1776197842277236736 |