Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils
Enzyme-mediated decomposition of soil organic matter (SOM) is controlled, amongst other factors, by organic matter properties and by the microbial decomposer community present. Since microbial community composition and SOM properties are often interrelated and both change with soil depth, the driver...
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2014
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Online Access: | https://eprints.lancs.ac.uk/id/eprint/79565/ https://eprints.lancs.ac.uk/id/eprint/79565/1/journal.pone.0094076.PDF https://doi.org/10.1371/journal.pone.0094076 |
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ftulancaster:oai:eprints.lancs.ac.uk:79565 2023-08-27T04:06:48+02:00 Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils Schnecker, Jörg Wild, Birgit Hofhansl, Florian Alves, Ricardo J Eloy Bárta, Jiři Čapek, Petr Fuchslueger, Lucia Gentsch, Norman Gittel, Antje Guggenberger, Georg Hofer, Angelika Kienzl, Sandra Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Šantrůčková, Hana Shibistova, Olga Takriti, Mounir Urich, Tim Weltin, Georg Richter, Andreas 2014-04-04 application/pdf https://eprints.lancs.ac.uk/id/eprint/79565/ https://eprints.lancs.ac.uk/id/eprint/79565/1/journal.pone.0094076.PDF https://doi.org/10.1371/journal.pone.0094076 en eng https://eprints.lancs.ac.uk/id/eprint/79565/1/journal.pone.0094076.PDF Schnecker, Jörg and Wild, Birgit and Hofhansl, Florian and Alves, Ricardo J Eloy and Bárta, Jiři and Čapek, Petr and Fuchslueger, Lucia and Gentsch, Norman and Gittel, Antje and Guggenberger, Georg and Hofer, Angelika and Kienzl, Sandra and Knoltsch, Anna and Lashchinskiy, Nikolay and Mikutta, Robert and Šantrůčková, Hana and Shibistova, Olga and Takriti, Mounir and Urich, Tim and Weltin, Georg and Richter, Andreas (2014) Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils. PLoS ONE, 9 (4). ISSN 1932-6203 creative_commons_attribution_4_0_international_license Journal Article PeerReviewed 2014 ftulancaster https://doi.org/10.1371/journal.pone.0094076 2023-08-03T22:29:21Z Enzyme-mediated decomposition of soil organic matter (SOM) is controlled, amongst other factors, by organic matter properties and by the microbial decomposer community present. Since microbial community composition and SOM properties are often interrelated and both change with soil depth, the drivers of enzymatic decomposition are hard to dissect. We investigated soils from three regions in the Siberian Arctic, where carbon rich topsoil material has been incorporated into the subsoil (cryoturbation). We took advantage of this subduction to test if SOM properties shape microbial community composition, and to identify controls of both on enzyme activities. We found that microbial community composition (estimated by phospholipid fatty acid analysis), was similar in cryoturbated material and in surrounding subsoil, although carbon and nitrogen contents were similar in cryoturbated material and topsoils. This suggests that the microbial community in cryoturbated material was not well adapted to SOM properties. We also measured three potential enzyme activities (cellobiohydrolase, leucine-amino-peptidase and phenoloxidase) and used structural equation models (SEMs) to identify direct and indirect drivers of the three enzyme activities. The models included microbial community composition, carbon and nitrogen contents, clay content, water content, and pH. Models for regular horizons, excluding cryoturbated material, showed that all enzyme activities were mainly controlled by carbon or nitrogen. Microbial community composition had no effect. In contrast, models for cryoturbated material showed that enzyme activities were also related to microbial community composition. The additional control of microbial community composition could have restrained enzyme activities and furthermore decomposition in general. The functional decoupling of SOM properties and microbial community composition might thus be one of the reasons for low decomposition rates and the persistence of 400 Gt carbon stored in cryoturbated material. Article in Journal/Newspaper Arctic Arctic Lancaster University: Lancaster Eprints Arctic PLoS ONE 9 4 e94076 |
institution |
Open Polar |
collection |
Lancaster University: Lancaster Eprints |
op_collection_id |
ftulancaster |
language |
English |
description |
Enzyme-mediated decomposition of soil organic matter (SOM) is controlled, amongst other factors, by organic matter properties and by the microbial decomposer community present. Since microbial community composition and SOM properties are often interrelated and both change with soil depth, the drivers of enzymatic decomposition are hard to dissect. We investigated soils from three regions in the Siberian Arctic, where carbon rich topsoil material has been incorporated into the subsoil (cryoturbation). We took advantage of this subduction to test if SOM properties shape microbial community composition, and to identify controls of both on enzyme activities. We found that microbial community composition (estimated by phospholipid fatty acid analysis), was similar in cryoturbated material and in surrounding subsoil, although carbon and nitrogen contents were similar in cryoturbated material and topsoils. This suggests that the microbial community in cryoturbated material was not well adapted to SOM properties. We also measured three potential enzyme activities (cellobiohydrolase, leucine-amino-peptidase and phenoloxidase) and used structural equation models (SEMs) to identify direct and indirect drivers of the three enzyme activities. The models included microbial community composition, carbon and nitrogen contents, clay content, water content, and pH. Models for regular horizons, excluding cryoturbated material, showed that all enzyme activities were mainly controlled by carbon or nitrogen. Microbial community composition had no effect. In contrast, models for cryoturbated material showed that enzyme activities were also related to microbial community composition. The additional control of microbial community composition could have restrained enzyme activities and furthermore decomposition in general. The functional decoupling of SOM properties and microbial community composition might thus be one of the reasons for low decomposition rates and the persistence of 400 Gt carbon stored in cryoturbated material. |
format |
Article in Journal/Newspaper |
author |
Schnecker, Jörg Wild, Birgit Hofhansl, Florian Alves, Ricardo J Eloy Bárta, Jiři Čapek, Petr Fuchslueger, Lucia Gentsch, Norman Gittel, Antje Guggenberger, Georg Hofer, Angelika Kienzl, Sandra Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Šantrůčková, Hana Shibistova, Olga Takriti, Mounir Urich, Tim Weltin, Georg Richter, Andreas |
spellingShingle |
Schnecker, Jörg Wild, Birgit Hofhansl, Florian Alves, Ricardo J Eloy Bárta, Jiři Čapek, Petr Fuchslueger, Lucia Gentsch, Norman Gittel, Antje Guggenberger, Georg Hofer, Angelika Kienzl, Sandra Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Šantrůčková, Hana Shibistova, Olga Takriti, Mounir Urich, Tim Weltin, Georg Richter, Andreas Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
author_facet |
Schnecker, Jörg Wild, Birgit Hofhansl, Florian Alves, Ricardo J Eloy Bárta, Jiři Čapek, Petr Fuchslueger, Lucia Gentsch, Norman Gittel, Antje Guggenberger, Georg Hofer, Angelika Kienzl, Sandra Knoltsch, Anna Lashchinskiy, Nikolay Mikutta, Robert Šantrůčková, Hana Shibistova, Olga Takriti, Mounir Urich, Tim Weltin, Georg Richter, Andreas |
author_sort |
Schnecker, Jörg |
title |
Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
title_short |
Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
title_full |
Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
title_fullStr |
Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
title_full_unstemmed |
Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
title_sort |
effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils |
publishDate |
2014 |
url |
https://eprints.lancs.ac.uk/id/eprint/79565/ https://eprints.lancs.ac.uk/id/eprint/79565/1/journal.pone.0094076.PDF https://doi.org/10.1371/journal.pone.0094076 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/79565/1/journal.pone.0094076.PDF Schnecker, Jörg and Wild, Birgit and Hofhansl, Florian and Alves, Ricardo J Eloy and Bárta, Jiři and Čapek, Petr and Fuchslueger, Lucia and Gentsch, Norman and Gittel, Antje and Guggenberger, Georg and Hofer, Angelika and Kienzl, Sandra and Knoltsch, Anna and Lashchinskiy, Nikolay and Mikutta, Robert and Šantrůčková, Hana and Shibistova, Olga and Takriti, Mounir and Urich, Tim and Weltin, Georg and Richter, Andreas (2014) Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils. PLoS ONE, 9 (4). ISSN 1932-6203 |
op_rights |
creative_commons_attribution_4_0_international_license |
op_doi |
https://doi.org/10.1371/journal.pone.0094076 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
4 |
container_start_page |
e94076 |
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1775347569806802944 |