Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica
The colonization by a large number of sea animals, including penguins and seals, plays an important role in the nitrogen cycle of the tundra ecosystem in coastal Antarctica. However, little is known about the effects of sea animal colonization on ammonia-oxidizing archaea (AOA) and bacteria (AOB) co...
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ftdoajarticles:oai:doaj.org/article:9fa9d550a7dd44a892f0ac9f81bfbedb 2023-05-15T13:41:32+02:00 Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica Q. Wang R. Zhu Y. Zheng T. Bao L. Hou 2019-10-01T00:00:00Z https://doi.org/10.5194/bg-16-4113-2019 https://doaj.org/article/9fa9d550a7dd44a892f0ac9f81bfbedb EN eng Copernicus Publications https://www.biogeosciences.net/16/4113/2019/bg-16-4113-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-4113-2019 1726-4170 1726-4189 https://doaj.org/article/9fa9d550a7dd44a892f0ac9f81bfbedb Biogeosciences, Vol 16, Pp 4113-4128 (2019) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/bg-16-4113-2019 2022-12-31T03:36:42Z The colonization by a large number of sea animals, including penguins and seals, plays an important role in the nitrogen cycle of the tundra ecosystem in coastal Antarctica. However, little is known about the effects of sea animal colonization on ammonia-oxidizing archaea (AOA) and bacteria (AOB) communities involved in nitrogen transformations. In this study, we chose active seal colony tundra soils (SSs), penguin colony soils (PSs), adjacent penguin-lacking tundra soils (PLs), tundra marsh soils (MSs), and background tundra soils (BSs) to investigate the effects of sea animal colonization on the abundance, activity, and diversity of AOA and AOB in maritime Antarctica. Results indicated that AOB dominated over AOA in PS, SS, and PL, whereas AOB and AOA abundances were similar in MS and BS. Penguin or seal activities increased the abundance of soil AOB amoA genes but reduced the abundance of AOA amoA genes, leading to very large ratios ( 1.5×10 2 to 3.2×10 4 ) of AOB to AOA amoA copy numbers. Potential ammonia oxidation rates (PAORs) were significantly higher ( P =0.02 ) in SS and PS than in PL, MS, and BS and were significantly positively correlated ( P < 0.001 ) with AOB amoA gene abundance. The predominance of AOB over AOA and their correlation with PAOR suggested that AOB play a more important role in the nitrification in animal colony soils. Sequence analysis for gene clones showed that AOA and AOB in tundra soils were from the Nitrososphaera and Nitrosospira lineages, respectively. Penguin or seal activities led to a predominance of AOA phylotypes related to Nitrososphaera cluster I and AOB phylotypes related to Nitrosospira clusters I and II but very low relative abundances in AOA phylotypes related to cluster II, and AOB phylotypes related to clusters III and IV. The differences in AOB and AOA community structures were closely related to soil biogeochemical processes under the disturbance of penguin or seal activities: soil C : N alteration and sufficient input of <math ... Article in Journal/Newspaper Antarc* Antarctica Tundra Directory of Open Access Journals: DOAJ Articles Biogeosciences 16 20 4113 4128 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 Q. Wang R. Zhu Y. Zheng T. Bao L. Hou Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
The colonization by a large number of sea animals, including penguins and seals, plays an important role in the nitrogen cycle of the tundra ecosystem in coastal Antarctica. However, little is known about the effects of sea animal colonization on ammonia-oxidizing archaea (AOA) and bacteria (AOB) communities involved in nitrogen transformations. In this study, we chose active seal colony tundra soils (SSs), penguin colony soils (PSs), adjacent penguin-lacking tundra soils (PLs), tundra marsh soils (MSs), and background tundra soils (BSs) to investigate the effects of sea animal colonization on the abundance, activity, and diversity of AOA and AOB in maritime Antarctica. Results indicated that AOB dominated over AOA in PS, SS, and PL, whereas AOB and AOA abundances were similar in MS and BS. Penguin or seal activities increased the abundance of soil AOB amoA genes but reduced the abundance of AOA amoA genes, leading to very large ratios ( 1.5×10 2 to 3.2×10 4 ) of AOB to AOA amoA copy numbers. Potential ammonia oxidation rates (PAORs) were significantly higher ( P =0.02 ) in SS and PS than in PL, MS, and BS and were significantly positively correlated ( P < 0.001 ) with AOB amoA gene abundance. The predominance of AOB over AOA and their correlation with PAOR suggested that AOB play a more important role in the nitrification in animal colony soils. Sequence analysis for gene clones showed that AOA and AOB in tundra soils were from the Nitrososphaera and Nitrosospira lineages, respectively. Penguin or seal activities led to a predominance of AOA phylotypes related to Nitrososphaera cluster I and AOB phylotypes related to Nitrosospira clusters I and II but very low relative abundances in AOA phylotypes related to cluster II, and AOB phylotypes related to clusters III and IV. The differences in AOB and AOA community structures were closely related to soil biogeochemical processes under the disturbance of penguin or seal activities: soil C : N alteration and sufficient input of <math ... |
format |
Article in Journal/Newspaper |
author |
Q. Wang R. Zhu Y. Zheng T. Bao L. Hou |
author_facet |
Q. Wang R. Zhu Y. Zheng T. Bao L. Hou |
author_sort |
Q. Wang |
title |
Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
title_short |
Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
title_full |
Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
title_fullStr |
Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
title_full_unstemmed |
Effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime Antarctica |
title_sort |
effects of sea animal colonization on the coupling between dynamics and activity of soil ammonia-oxidizing bacteria and archaea in maritime antarctica |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-4113-2019 https://doaj.org/article/9fa9d550a7dd44a892f0ac9f81bfbedb |
genre |
Antarc* Antarctica Tundra |
genre_facet |
Antarc* Antarctica Tundra |
op_source |
Biogeosciences, Vol 16, Pp 4113-4128 (2019) |
op_relation |
https://www.biogeosciences.net/16/4113/2019/bg-16-4113-2019.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-16-4113-2019 1726-4170 1726-4189 https://doaj.org/article/9fa9d550a7dd44a892f0ac9f81bfbedb |
op_doi |
https://doi.org/10.5194/bg-16-4113-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
20 |
container_start_page |
4113 |
op_container_end_page |
4128 |
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1766151820001935360 |