Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory
Recent work has shown that herbivory can indirectly affect greenhouse gas (GHG) fluxes emitted to our atmosphere by altering soil properties, and therefore the microbial community structure, but such interactions have rarely been quantified explicitly. I sampled grazed and ungrazed Arctic wetland so...
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ftutahsudc:oai:digitalcommons.usu.edu:researchweek-1996 2023-05-15T14:56:16+02:00 Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory Foley, Karen 2019-04-11T16:00:00Z https://digitalcommons.usu.edu/researchweek/ResearchWeek2019/session5oral/1 unknown DigitalCommons@USU https://digitalcommons.usu.edu/researchweek/ResearchWeek2019/session5oral/1 Student Research Symposium Life Sciences text 2019 ftutahsudc 2022-03-07T20:46:33Z Recent work has shown that herbivory can indirectly affect greenhouse gas (GHG) fluxes emitted to our atmosphere by altering soil properties, and therefore the microbial community structure, but such interactions have rarely been quantified explicitly. I sampled grazed and ungrazed Arctic wetland soils from the Yukon-Kuskokwin Delta in western Alaska to examine how herbivory modifies microbial community structure, and linked these compositional shifts with trace gas fluxes through two related studies. First, I extracted DNA from the soil samples and used the QIIME2 sequencing curation pipeline to analyze microbial community structure and diversity across different wetland habitats. Second, I performed a fully factorial microcosm incubation experiment to examine how herbivory-induced shifts in soil temperature, moisture, nutrient content, and microbial community structure might impact GHG fluxes. I found that the differences in mean carbon dioxide and methane fluxes were significant at p<0.05 between different treatment combinations of grazing legacy, soil temperature, and soil moisture. I demonstrate that legacy effects of grazing on microbial communities can modify the relationship between GHG fluxes and environmental drivers. Text Arctic Alaska Yukon Utah State University: DigitalCommons@USU Arctic Yukon |
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Utah State University: DigitalCommons@USU |
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Life Sciences |
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Life Sciences Foley, Karen Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
topic_facet |
Life Sciences |
description |
Recent work has shown that herbivory can indirectly affect greenhouse gas (GHG) fluxes emitted to our atmosphere by altering soil properties, and therefore the microbial community structure, but such interactions have rarely been quantified explicitly. I sampled grazed and ungrazed Arctic wetland soils from the Yukon-Kuskokwin Delta in western Alaska to examine how herbivory modifies microbial community structure, and linked these compositional shifts with trace gas fluxes through two related studies. First, I extracted DNA from the soil samples and used the QIIME2 sequencing curation pipeline to analyze microbial community structure and diversity across different wetland habitats. Second, I performed a fully factorial microcosm incubation experiment to examine how herbivory-induced shifts in soil temperature, moisture, nutrient content, and microbial community structure might impact GHG fluxes. I found that the differences in mean carbon dioxide and methane fluxes were significant at p<0.05 between different treatment combinations of grazing legacy, soil temperature, and soil moisture. I demonstrate that legacy effects of grazing on microbial communities can modify the relationship between GHG fluxes and environmental drivers. |
format |
Text |
author |
Foley, Karen |
author_facet |
Foley, Karen |
author_sort |
Foley, Karen |
title |
Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
title_short |
Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
title_full |
Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
title_fullStr |
Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
title_full_unstemmed |
Microbial Communities as Drivers of Arctic Soil Greenhouse Gas Fluxes Under Changes in Herbivory |
title_sort |
microbial communities as drivers of arctic soil greenhouse gas fluxes under changes in herbivory |
publisher |
DigitalCommons@USU |
publishDate |
2019 |
url |
https://digitalcommons.usu.edu/researchweek/ResearchWeek2019/session5oral/1 |
geographic |
Arctic Yukon |
geographic_facet |
Arctic Yukon |
genre |
Arctic Alaska Yukon |
genre_facet |
Arctic Alaska Yukon |
op_source |
Student Research Symposium |
op_relation |
https://digitalcommons.usu.edu/researchweek/ResearchWeek2019/session5oral/1 |
_version_ |
1766328288512311296 |