Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities
Soil ammonia-oxidizing microorganisms play important roles in nitrogen (N) cycling in cold ecosystems, but how changes in snow cover will affect their distribution and associated functional characteristics remains unclear. A snow manipulation experiment was conducted to explore the effects of snow e...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/9/1483 |
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| author | Li Zhang Chengming You Sining Liu Lixia Wang Bo Tan Zhenfeng Xu Han Li |
| author_facet | Li Zhang Chengming You Sining Liu Lixia Wang Bo Tan Zhenfeng Xu Han Li |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | Soil ammonia-oxidizing microorganisms play important roles in nitrogen (N) cycling in cold ecosystems, but how changes in snow cover will affect their distribution and associated functional characteristics remains unclear. A snow manipulation experiment was conducted to explore the effects of snow exclusion on soil ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities and functional characteristics in a spruce forest in the eastern Tibet Plateau. Results showed that the amoA gene abundance and community composition of AOA and AOB did not differ between snow regimes but varied among winter periods. AOA and AOB gene abundances showed a decreasing trend during the snow cover melting period. During the deep snow cover period, Thaumarchaeota and Crenarchaeota in the AOA community decreased significantly, while Proteobacteria and Nitrosospira in the AOB community increased significantly. The main factors affecting the changes in AOA and AOB community diversity and composition were soil MBN, nitrate nitrogen, and temperature, while AOA and AOB community diversity and composition were also significantly correlated with soil enzyme activities related to N cycling. These results recommend that the season-driven variations strongly affected soil ammonia-oxidizing community and functional characteristics more than momentary snow cover change. Such findings offer new insights into how soil N-cycling processes would respond to reduced snowfall in high-altitude regions. |
| first_indexed | 2024-03-10T00:00:40Z |
| format | Article |
| id | doaj.art-b4efa3ab650044c0a78889cb38943356 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T00:00:40Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
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| series | Forests |
| spelling | doaj.art-b4efa3ab650044c0a78889cb389433562023-11-23T16:18:18ZengMDPI AGForests1999-49072022-09-01139148310.3390/f13091483Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea CommunitiesLi Zhang0Chengming You1Sining Liu2Lixia Wang3Bo Tan4Zhenfeng Xu5Han Li6Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaForestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, ChinaSoil ammonia-oxidizing microorganisms play important roles in nitrogen (N) cycling in cold ecosystems, but how changes in snow cover will affect their distribution and associated functional characteristics remains unclear. A snow manipulation experiment was conducted to explore the effects of snow exclusion on soil ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities and functional characteristics in a spruce forest in the eastern Tibet Plateau. Results showed that the amoA gene abundance and community composition of AOA and AOB did not differ between snow regimes but varied among winter periods. AOA and AOB gene abundances showed a decreasing trend during the snow cover melting period. During the deep snow cover period, Thaumarchaeota and Crenarchaeota in the AOA community decreased significantly, while Proteobacteria and Nitrosospira in the AOB community increased significantly. The main factors affecting the changes in AOA and AOB community diversity and composition were soil MBN, nitrate nitrogen, and temperature, while AOA and AOB community diversity and composition were also significantly correlated with soil enzyme activities related to N cycling. These results recommend that the season-driven variations strongly affected soil ammonia-oxidizing community and functional characteristics more than momentary snow cover change. Such findings offer new insights into how soil N-cycling processes would respond to reduced snowfall in high-altitude regions.https://www.mdpi.com/1999-4907/13/9/1483winterforest soil<i>amoA</i>community diversitycommunity compositionenzyme activities |
| spellingShingle | Li Zhang Chengming You Sining Liu Lixia Wang Bo Tan Zhenfeng Xu Han Li Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities Forests winter forest soil <i>amoA</i> community diversity community composition enzyme activities |
| title | Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities |
| title_full | Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities |
| title_fullStr | Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities |
| title_full_unstemmed | Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities |
| title_short | Snow Exclusion Does Not Affect Soil Ammonia-Oxidizing Bacteria and Archaea Communities |
| title_sort | snow exclusion does not affect soil ammonia oxidizing bacteria and archaea communities |
| topic | winter forest soil <i>amoA</i> community diversity community composition enzyme activities |
| url | https://www.mdpi.com/1999-4907/13/9/1483 |
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