Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra
High latitude ecosystems are characterized by cold soils and long winters, with much of their biogeochemistry directly or indirectly controlled by temperature. Climate warming has led to an expansion of shrubby plant communities across tussock tundra, but whether these clear aboveground shifts corre...
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crunicaliforniap:10.1525/elementa.2021.00116 2024-09-15T18:39:42+00:00 Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra Pold, Grace Schimel, Joshua P. Sistla, Seeta A. 2021 http://dx.doi.org/10.1525/elementa.2021.00116 http://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00116/454533/elementa.2021.00116.pdf en eng University of California Press http://creativecommons.org/licenses/by/4.0/ Elementa: Science of the Anthropocene volume 9, issue 1 ISSN 2325-1026 journal-article 2021 crunicaliforniap https://doi.org/10.1525/elementa.2021.00116 2024-08-29T04:20:37Z High latitude ecosystems are characterized by cold soils and long winters, with much of their biogeochemistry directly or indirectly controlled by temperature. Climate warming has led to an expansion of shrubby plant communities across tussock tundra, but whether these clear aboveground shifts correspond to changes in the microbial community belowground remains less certain. Using bromodeoxyuridine to label growing cells, we evaluated how total and actively growing bacterial communities varied throughout a year and following 22 years of passive summer warming. We found that changes in total and actively growing bacterial community structures were correlated with edaphic factors and time point sampled, but were unaffected by warming. The aboveground plant community had become more shrub-dominated with warming at this site, and so our results indicate that belowground bacterial communities did not track changes in the aboveground plant community. As such, studies that have used space-for-time methods to predict how increased shrub cover has altered bacterial communities may not be representative of how the microbial community will be affected by in situ changes in the plant community as the Arctic continues to warm. Article in Journal/Newspaper Tundra University of California Press Elementa: Science of the Anthropocene 9 1 |
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University of California Press |
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crunicaliforniap |
language |
English |
description |
High latitude ecosystems are characterized by cold soils and long winters, with much of their biogeochemistry directly or indirectly controlled by temperature. Climate warming has led to an expansion of shrubby plant communities across tussock tundra, but whether these clear aboveground shifts correspond to changes in the microbial community belowground remains less certain. Using bromodeoxyuridine to label growing cells, we evaluated how total and actively growing bacterial communities varied throughout a year and following 22 years of passive summer warming. We found that changes in total and actively growing bacterial community structures were correlated with edaphic factors and time point sampled, but were unaffected by warming. The aboveground plant community had become more shrub-dominated with warming at this site, and so our results indicate that belowground bacterial communities did not track changes in the aboveground plant community. As such, studies that have used space-for-time methods to predict how increased shrub cover has altered bacterial communities may not be representative of how the microbial community will be affected by in situ changes in the plant community as the Arctic continues to warm. |
format |
Article in Journal/Newspaper |
author |
Pold, Grace Schimel, Joshua P. Sistla, Seeta A. |
spellingShingle |
Pold, Grace Schimel, Joshua P. Sistla, Seeta A. Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
author_facet |
Pold, Grace Schimel, Joshua P. Sistla, Seeta A. |
author_sort |
Pold, Grace |
title |
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
title_short |
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
title_full |
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
title_fullStr |
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
title_full_unstemmed |
Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra |
title_sort |
soil bacterial communities vary more by season than with over two decades of experimental warming in arctic tussock tundra |
publisher |
University of California Press |
publishDate |
2021 |
url |
http://dx.doi.org/10.1525/elementa.2021.00116 http://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00116/454533/elementa.2021.00116.pdf |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Elementa: Science of the Anthropocene volume 9, issue 1 ISSN 2325-1026 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1525/elementa.2021.00116 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
9 |
container_issue |
1 |
_version_ |
1810484045404962816 |