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The purpose of I-REP (Interdisciplinary Workshop in Race, Ethnicity and Politics) is to provide a space for scholars whose research centers race, ethnicity and politics across a number of fields to receive critical feedback on the early stages of their work (especially graduate students), build community with other researchers who share similar interests and offer an opportunity for participants to collaborate on a joint research project within the working group.", "occurrence_notes":null, "guid":"112497-21857417@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/112497", "building_id":"1000175", "building_name":"Haven Hall", "campus_maps_id":"542", "room":"5769 Pre-Function", "location_name":"Haven Hall", "has_livestream":0, "cost":"", "tags":["Department Of Political Science","Political Science"], "website":"https:\/\/sites.google.com\/umich.edu\/irep\/home?authuser=0", "sponsors":[ { "group_name":"Department of Political Science", "group_id":"3610", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/09\/event_112497_original-2.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/09\/event_112497_original-2.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2024\/09\/event_112497_original-2.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2024\/09\/event_112497_original-2.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2024\/09\/event_112497_original-2.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2024\/09\/event_112497_original-2.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/09\/event_112497_original-2.png" }, "occurrence_count":19, "first_occurrence":21829007 } , "123383-21850840": { "datetime_modified":"20240926T164621", "datetime_start":"20241004T153000", "datetime_end":"20241004T163000", "has_end_time":1, "date_start":"2024-10-04", "date_end":"2024-10-04", "time_start":"15:30:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"Smith Lecture - Christopher Francis, Stanford University", "occurrence_title":"", "combined_title":"Smith Lecture - Christopher Francis, Stanford University: Exploring the Diversity, Abundance, and Activity of Ammonia-Oxidizing Archaea in Coastal and Estuarine Systems", "event_subtitle":"Exploring the Diversity, Abundance, and Activity of Ammonia-Oxidizing Archaea in Coastal and Estuarine Systems", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Ammonia-oxidizing archaea (AOA) carry out key transformations of ammonia in estuarine systems such as San Francisco Bay (SFB)\u2014the largest estuary on the west coast of North America\u2014and play a significant role in both local and global nitrogen cycling. Using metagenomics and 16S rRNA gene amplicon sequencing, we found that AOA are more abundant than ammonia-oxidizing bacteria and nitrite-oxidizing bacteria, except in the freshwater stations in SFB. Surprisingly, in South SFB we observed recurrent AOA blooms of \u201cCandidatus Nitrosomarinus catalina\u201d SPOT01-like organisms, which account for over 20% of the overall microbial community and co-occur with weeks of high nitrite concentrations (>10\u2009\u03bcM) in the oxic water column. We also observed pronounced nitrite peaks occurring in the autumn for 7 of the last 9\u2009years, suggesting that seasonal AOA blooms are common in South SFB. To carefully examine the dynamics and activity of nitrifying microorganisms over the course of an AOA bloom in South SFB, we measured nitrification rates, quantified AOA abundance, and analyzed both metagenomic and metatranscriptomic data during the autumn of 2018 and seasonally throughout 2019. 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