{"663470":{"#nid":"663470","#data":{"type":"event","title":"PhD Defense by Tianze Song","body":[{"value":"\u003Cp\u003EIn partial fulfillment of the requirements for the degree of\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDoctor of Philosophy in Biology\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn the\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Biological Sciences\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ETianze Song\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EWill defend his dissertation\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EThe response of the microbial carbon cycle and greenhouse gas production in wetland soils to climate change drivers\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E6\u003Csup\u003Eth\u003C\/sup\u003E Dec 2022\u003C\/p\u003E\r\n\r\n\u003Cp\u003E11:00 AM\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EES\u0026amp;TT L1205\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Ca href=\u0022https:\/\/gatech.zoom.us\/j\/6732505536\u0022\u003Ehttps:\/\/gatech.zoom.us\/j\/6732505536\u003C\/a\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EThesis Advisor:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EJoel Kostka, Ph.D.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Biological Sciences\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGeorgia Institute of Technology\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThomas Dichristina, Ph.D.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Biological Sciences\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGeorgia Institute of Technology\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMartial Taillefert, Ph.D.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Earth and Atmospheric Sciences\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGeorgia Institute of Technology\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECaitlin Petro, Ph.D.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Biological Sciences\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGeorgia Institute of Technology\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EChristopher Schadt, Ph.D.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EBiosciences Division\u003C\/p\u003E\r\n\r\n\u003Cp\u003EOak Ridge National Laboratory\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EABSTRACT: Although comprising only ~3% of the terrestrial surface area, peatland ecosystems store an estimated one-third soil carbon. In addition to\u0026nbsp;this role as a critical global carbon sink, freshwater wetlands, such as peatlands, account for approximately one-third of global methane\u0026nbsp;(CH4) emissions to the atmosphere. While CH4 emissions from peatlands are expected to disproportionately increase due to warming, the\u0026nbsp;environmental controls remain poorly constrained. Any increase in CH4 emission is of great concern due to the fact that the sustained-flux\u0026nbsp;global warming potential of CH4 is estimated to be 34-times greater than that of carbon dioxide (CO2) on a 100 y timescale.\u003Cbr \/\u003E\r\n\u0026nbsp;\u003Cbr \/\u003E\r\nWe are investigating how soil microbial communities respond to climate change factors, warming and elevated atmospheric CO2, in the\u0026nbsp;laboratory and under in situ conditions. \u0026nbsp;Our research indicates that soil organic matter quality or composition is a primary driver of\u0026nbsp;greenhouse gas production from heterotrophic respiration and methanogenesis in soils across many peatland types. In particular, we\u0026nbsp;show that dissolved organic carbon (DOC) compounds inhibit microbial-mediated decomposition and greenhouse gas production, but the\u0026nbsp;inhibitory effect is alleviated by warming. \u0026nbsp;Warming leads to a decline in phylogenetic diversity and pronounced shifts in the composition\u0026nbsp;of microbial communities, with implications for ecosystem function. \u0026nbsp;Our results suggest that with warming, we can expect a concomitant\u0026nbsp;shift toward increasingly methanogenic conditions and amplified climate\u0026ndash;peatland feedbacks.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"The response of the microbial carbon cycle and greenhouse gas production in wetland soils to climate change drivers"}],"uid":"27707","created_gmt":"2022-11-28 21:38:33","changed_gmt":"2022-11-28 21:38:33","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2022-12-06T11:00:00-05:00","event_time_end":"2022-12-06T13:00:00-05:00","event_time_end_last":"2022-12-06T13:00:00-05:00","gmt_time_start":"2022-12-06 16:00:00","gmt_time_end":"2022-12-06 18:00:00","gmt_time_end_last":"2022-12-06 18:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}