{"630953":{"#nid":"630953","#data":{"type":"event","title":"Harnessing the Power of Biogeochemical Fingerprints of Metabolism in Modern Coral Reef Ecosystems","body":[{"value":"\u003Ch4\u003E\u003Cstrong\u003EThe School of Earth and Atmospheric Sciences Special Seminars Present Dr. Isaiah W. Bolden, University of Washington, School of Oceanography\u0026nbsp;\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EHarnessing the Power of Biogeochemical Fingerprints of Metabolism in Modern Coral Reef Ecosystems\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECoral reef ecosystems are known to be in a global state of decline, largely attributed to sea-surface warming, ocean acidification, pollution, disease, and other direct human contributions. The impending transition away from calcified substrates to\u0026nbsp;macroalgae\u0026nbsp;dominance within these environments could translate to major losses in marine biodiversity, erosion of protective coastal barriers, stress on major fisheries, and numerous other sociocultural and economic impacts.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMy research combines discrete and autonomous measurements of carbonate chemistry, trace metal, and carbon isotope variability within coral reef environments, quantitative decomposition models of biogeochemical fluxes within reefs, and high-resolution mass spectrometry to investigate various geochemical proxies as fingerprints of stress-induced changes in reef metabolism and community composition.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESpecifically, I will report on (1) the limitations of assuming canonical metabolic closing of carbon and oxygen budgets on reefs, (2) temporal variability in the seawater Sr\/Ca ratio on reefs as an indicator of\u0026nbsp;calcifier\u0026nbsp;community composition, and (3) variability in the \u0026delta;13C value of seawater dissolved inorganic carbon (DIC) on reefs as a proxy for benthic primary producer community composition.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe ultimate goal of this work is to construct a sophisticated and quantitative toolkit for detecting and monitoring trophic transitions within reefs around the world.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"A special seminar by Isaiah W. Bolden, School of Earth and Atmospheric Sciences"}],"uid":"34458","created_gmt":"2020-01-13 16:02:33","changed_gmt":"2020-01-13 16:03:23","author":"nlawson3","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2020-01-17T13:00:00-05:00","event_time_end":"2020-01-17T14:00:00-05:00","event_time_end_last":"2020-01-17T14:00:00-05:00","gmt_time_start":"2020-01-17 18:00:00","gmt_time_end":"2020-01-17 19:00:00","gmt_time_end_last":"2020-01-17 19:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"630952":{"id":"630952","type":"image","title":"Isiah Bolden","body":null,"created":"1578930998","gmt_created":"2020-01-13 15:56:38","changed":"1578930998","gmt_changed":"2020-01-13 15:56:38","alt":"","file":{"fid":"240176","name":"I. Bolden.jpg","image_path":"\/sites\/default\/files\/images\/I.%20Bolden.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/I.%20Bolden.jpg","mime":"image\/jpeg","size":48967,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/I.%20Bolden.jpg?itok=NaB-_pt-"}}},"media_ids":["630952"],"groups":[{"id":"364801","name":"School of Earth and Atmospheric Sciences (EAS)"}],"categories":[],"keywords":[{"id":"175623","name":"EAS Seminar"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EDr. Kim Cobb\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}