Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra
Arctic tundra ecosystems store a significant proportion of the global soil organic carbon (C). However, warming-induced shrub encroachment and reindeer (Rangifer tarandus L.) grazing regimes promoting graminoid vegetation may strongly influence tundra soil C stability. Here, we studied how reindeer...
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Language: | English |
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2024
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Online Access: | https://research.ulapland.fi/fi/publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 https://doi.org/10.1016/j.soilbio.2024.109441 https://lacris.ulapland.fi/ws/files/38208030/1-s2.0-S0038071724001305-main.pdf http://www.scopus.com/inward/record.url?scp=85190841974&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85190841974&partnerID=8YFLogxK |
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ftulaplandcdispu:oai:lacris.ulapland.fi:publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 2024-09-15T18:31:48+00:00 Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra Tyvijärvi, Anne Stark, Sari Ylänne, Henni Castano, Carles Adamczyk, Bartosz 2024-04-23 application/pdf https://research.ulapland.fi/fi/publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 https://doi.org/10.1016/j.soilbio.2024.109441 https://lacris.ulapland.fi/ws/files/38208030/1-s2.0-S0038071724001305-main.pdf http://www.scopus.com/inward/record.url?scp=85190841974&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85190841974&partnerID=8YFLogxK eng eng https://research.ulapland.fi/fi/publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 info:eu-repo/semantics/openAccess Tyvijärvi , A , Stark , S , Ylänne , H , Castano , C & Adamczyk , B 2024 , ' Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra ' , Soil Biology and Biochemistry , vol. 194 , 109441 . https://doi.org/10.1016/j.soilbio.2024.109441 /dk/atira/pure/person/fieldofscience2010/1/18/2 name=Biochemistry cell and molecular biology /dk/atira/pure/person/fieldofscience2010/1/18/1 name=Ecology evolutionary biology /dk/atira/pure/person/fieldofscience2010/1/16 name=Chemical sciences article 2024 ftulaplandcdispu https://doi.org/10.1016/j.soilbio.2024.109441 2024-06-24T23:41:14Z Arctic tundra ecosystems store a significant proportion of the global soil organic carbon (C). However, warming-induced shrub encroachment and reindeer (Rangifer tarandus L.) grazing regimes promoting graminoid vegetation may strongly influence tundra soil C stability. Here, we studied how reindeer grazing intensity and experimental warming affect soil C stabilization in a tundra ecosystem. We hypothesized that under light grazing, persistent complexes formed by fungal necromass (FNM) and condensed tannins (CT) from shrub roots stabilize the soil C, whereas, under heavy grazing, the soil C stabilization is affected by glomalin-related soil proteins (GRSP) produced by arbuscular mycorrhizal fungi of graminoids. In addition, we expect warming to mediate grazing effects, diminishing the potential for C stabilization. Our results show no effect of grazing on stable C concentration, however, under light grazing the labile C concentration was higher. We found higher concentrations of chitin and tannins under light grazing, indicative of soil C stabilization potential through FNM-CT complexes. By contrast, we found more root ergosterol under heavy grazing, suggesting a high abundance of endophytes, usually melanized, and a slightly higher GRSP concentration. Warming did not cause changes in stable C concentration but was associated with changes in the soil chemical quality, pointing to a decrease of lignin, polypeptides, and polysaccharides. We conclude that different soil C stabilization mechanisms operate under light and heavy grazing pressures and that these mechanisms are closely linked to changes in the vegetation and the fungi typically associated with them. Article in Journal/Newspaper Rangifer tarandus Subarctic Tundra LaCRIS - University of Lapland Current Research System Soil Biology and Biochemistry 194 109441 |
institution |
Open Polar |
collection |
LaCRIS - University of Lapland Current Research System |
op_collection_id |
ftulaplandcdispu |
language |
English |
topic |
/dk/atira/pure/person/fieldofscience2010/1/18/2 name=Biochemistry cell and molecular biology /dk/atira/pure/person/fieldofscience2010/1/18/1 name=Ecology evolutionary biology /dk/atira/pure/person/fieldofscience2010/1/16 name=Chemical sciences |
spellingShingle |
/dk/atira/pure/person/fieldofscience2010/1/18/2 name=Biochemistry cell and molecular biology /dk/atira/pure/person/fieldofscience2010/1/18/1 name=Ecology evolutionary biology /dk/atira/pure/person/fieldofscience2010/1/16 name=Chemical sciences Tyvijärvi, Anne Stark, Sari Ylänne, Henni Castano, Carles Adamczyk, Bartosz Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
topic_facet |
/dk/atira/pure/person/fieldofscience2010/1/18/2 name=Biochemistry cell and molecular biology /dk/atira/pure/person/fieldofscience2010/1/18/1 name=Ecology evolutionary biology /dk/atira/pure/person/fieldofscience2010/1/16 name=Chemical sciences |
description |
Arctic tundra ecosystems store a significant proportion of the global soil organic carbon (C). However, warming-induced shrub encroachment and reindeer (Rangifer tarandus L.) grazing regimes promoting graminoid vegetation may strongly influence tundra soil C stability. Here, we studied how reindeer grazing intensity and experimental warming affect soil C stabilization in a tundra ecosystem. We hypothesized that under light grazing, persistent complexes formed by fungal necromass (FNM) and condensed tannins (CT) from shrub roots stabilize the soil C, whereas, under heavy grazing, the soil C stabilization is affected by glomalin-related soil proteins (GRSP) produced by arbuscular mycorrhizal fungi of graminoids. In addition, we expect warming to mediate grazing effects, diminishing the potential for C stabilization. Our results show no effect of grazing on stable C concentration, however, under light grazing the labile C concentration was higher. We found higher concentrations of chitin and tannins under light grazing, indicative of soil C stabilization potential through FNM-CT complexes. By contrast, we found more root ergosterol under heavy grazing, suggesting a high abundance of endophytes, usually melanized, and a slightly higher GRSP concentration. Warming did not cause changes in stable C concentration but was associated with changes in the soil chemical quality, pointing to a decrease of lignin, polypeptides, and polysaccharides. We conclude that different soil C stabilization mechanisms operate under light and heavy grazing pressures and that these mechanisms are closely linked to changes in the vegetation and the fungi typically associated with them. |
format |
Article in Journal/Newspaper |
author |
Tyvijärvi, Anne Stark, Sari Ylänne, Henni Castano, Carles Adamczyk, Bartosz |
author_facet |
Tyvijärvi, Anne Stark, Sari Ylänne, Henni Castano, Carles Adamczyk, Bartosz |
author_sort |
Tyvijärvi, Anne |
title |
Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
title_short |
Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
title_full |
Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
title_fullStr |
Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
title_full_unstemmed |
Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
title_sort |
shifts in soil c stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra |
publishDate |
2024 |
url |
https://research.ulapland.fi/fi/publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 https://doi.org/10.1016/j.soilbio.2024.109441 https://lacris.ulapland.fi/ws/files/38208030/1-s2.0-S0038071724001305-main.pdf http://www.scopus.com/inward/record.url?scp=85190841974&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85190841974&partnerID=8YFLogxK |
genre |
Rangifer tarandus Subarctic Tundra |
genre_facet |
Rangifer tarandus Subarctic Tundra |
op_source |
Tyvijärvi , A , Stark , S , Ylänne , H , Castano , C & Adamczyk , B 2024 , ' Shifts in soil C stabilization mechanisms are linked to reindeer-induced changes in plant communities and associated fungi in subarctic tundra ' , Soil Biology and Biochemistry , vol. 194 , 109441 . https://doi.org/10.1016/j.soilbio.2024.109441 |
op_relation |
https://research.ulapland.fi/fi/publications/6816dceb-4b5a-497f-9d01-ee3afa5fa088 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.soilbio.2024.109441 |
container_title |
Soil Biology and Biochemistry |
container_volume |
194 |
container_start_page |
109441 |
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1810473542685294592 |