{"id":1966,"date":"2023-11-01T20:48:19","date_gmt":"2023-11-01T20:48:19","guid":{"rendered":"https:\/\/live-usc-dornsife.pantheonsite.io\/uscseagrant\/?page_id=1966"},"modified":"2024-06-04T16:10:03","modified_gmt":"2024-06-04T16:10:03","slug":"purifying-pollutants","status":"publish","type":"page","link":"https:\/\/dornsife.usc.edu\/uscseagrant\/purifying-pollutants\/","title":{"rendered":"Purifying Pollutants"},"content":{"rendered":"\n\n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--accordions \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--accordions\"\n    \n      >\n\n    \n      <div class=\"header-container\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          Managing ground and surface waters together to limit pollution\n      <\/h2>\n\n\n<\/div>\n      \n                  \n<div class=\"f--field f--description\">\n\n    \n  <p><span style=\"font-weight: 400;\">Past research has revealed that impaired water quality in Elkhorn Slough\u2014California\u2019s third-largest estuary and a National Estuarine Research Reserve (NERR)\u2014is linked to salt marsh loss and decreased flatfish production within the estuary and catch offshore. The region\u2019s Water Quality Control Board is working with agricultural farmers and scientists to better understand these pollution issues and is actively seeking solutions. However, comprehensive studies of how nutrient pollution moves through this system are lacking. University of Southern California (USC) Sea Grant funded a study to quantify the extent to which nutrient removal and transport processes occur naturally in this salt marsh system. <\/span><\/p>\n\n\n\n<\/div>\n      \n      \n    <\/div>\n  \n  \n  \n\n  <\/div><\/div>\n\n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <h3><b>Key Results<\/b><span style=\"font-weight: 400;\">:<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Results show that ocean tides dominate the salt marsh hydrology and biogeochemistry in the dry growing season (summer) and that freshwater inputs mix with tidal inputs during the wet dormant season (winter)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The hydrological model of Elkhorn Slough is complete; the biogeochemical model to understand how nutrients move throughout groundwater and the water-sediment interface is underway; pollution modeling is underway<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Researchers predict that as sea levels continue to rise, increased inundation and salinity will reduce plant productivity at higher marsh elevations,<\/span> <span style=\"font-weight: 400;\">decreasing the marsh\u2019s ability to serve as a sink for terrestrial nitrogen<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Project Impacts &amp; Application:<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hosted a public workshop in collaboration with Elkhorn Slough NERR staff in June 2023<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Presented at the American Geophysical Union Meeting, Coastal and Estuarine Research Federation Conference, and Goldschmidt Conference<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Organized an undergraduate research course where students partnered with Elkhorn Slough National Estuarine Research Reserve to identify regional water quality needs<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Began collaborating with the Department of Energy\u2019s Lawrence Berkeley National Lab for data analysis<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Results were shared with the Central Coast Water Board who are interested in the results to help create a Total Maximum Daily Load (TMDL) for Elkhorn Slough.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Results were also shared with the United States Geological Survey and a variety of academic audiences.<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><b>Principal Investigator:<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Margaret Zimmer, Ph.D., University of California Santa Cruz\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><b>Funding: <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">California Ocean Protection Council, 2018-2021<\/span><\/p>\n<h3><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Additional Info<\/b><span style=\"font-weight: 400;\">:\u00a0<\/span><\/h3>\n<p><a href=\"http:\/\/mzimmer.weebly.com\/nitrates.html\"><span style=\"font-weight: 400;\">http:\/\/mzimmer.weebly.com\/nitrates.html<\/span><\/a><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Grande, E., Arora, B., Visser, A., Montalvo, M., Braswell, A., Seybold, E., Tatariw, C., Beheshti, K. and Zimmer, M., <\/span><b>2022<\/b><span style=\"font-weight: 400;\">. Tidal frequencies and quasiperiodic subsurface water level variations dominate redox dynamics in a salt marsh system.\u00a0<\/span><i><span style=\"font-weight: 400;\">Hydrological Processes<\/span><\/i><span style=\"font-weight: 400;\">,\u00a0<\/span><i><span style=\"font-weight: 400;\">36<\/span><\/i><span style=\"font-weight: 400;\">(5), p.e14587.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Grande, E., Visser, A., Oerter, E., Arora, B., Seybold, E.C., Tatariw, C., Braswell, A., Montalvo, M. and Zimmer, M., <\/span><b>2023<\/b><span style=\"font-weight: 400;\">. Flow directions and ages of subsurface water in a salt marsh system constrained by isotope tracing.\u00a0<\/span><i><span style=\"font-weight: 400;\">Estuaries and Coasts<\/span><\/i><span style=\"font-weight: 400;\">,\u00a0<\/span><i><span style=\"font-weight: 400;\">46<\/span><\/i><span style=\"font-weight: 400;\">(6), pp.1417-1437.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Grande, E., Seybold, E.C., Tatariw, C., Visser, A., Braswell, A., Arora, B., Birgand, F., Haskins, J. and Zimmer, M., <\/span><b>2023<\/b><span style=\"font-weight: 400;\">. Seasonal and tidal variations in hydrologic inputs drive salt marsh porewater nitrate dynamics.\u00a0<\/span><i><span style=\"font-weight: 400;\">Hydrological Processes<\/span><\/i><span style=\"font-weight: 400;\">,\u00a0<\/span><i><span style=\"font-weight: 400;\">37<\/span><\/i><span style=\"font-weight: 400;\">(8), p.e14951.<\/span><\/li>\n<\/ul>\n<p><a class=\"cta-link\" href=\"\/uscseagrant\/publications-database\/\">Access our Publications Database to view publications from this project or other related topics<\/a><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n\n\n\n\n                                                \n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--photo-wall \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--photo-wall\"\n    \n      >\n\n    \n  \n  <div class=\"photos-container\">\n\n    \n    <div class=\"grid-sizer\"><\/div>\n    <div class=\"gutter-sizer\"><\/div>\n\n      \n                                                                                          \n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Research_PurifyingPollutants_Photo1-540x0-c-default.png\"\n                    \n        \n                  alt=\"Graphic showing N2 flux in sediment incubation experiments conducted with sediments from different salt marsh positions\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                          <a href=\"#photo-1431844087\" class=\"photo-trigger\" aria-label=\"Expand to view image and text\">\n                <svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 35 35\" enable-background=\"new 0 0 35 35\" xml:space=\"preserve\"><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" fill=\"#000000\" d=\"M28,7v7.9h-2.6l0-3.4l-4.3,4.3c-0.3,0.3-0.6,0.4-0.9,0.4s-0.7-0.1-0.9-0.4c-0.5-0.5-0.5-1.3,0-1.9l4.3-4.3h-3.4V7H28z M7,28v-7.9h2.6v3.4l4.3-4.3c0.5-0.5,1.3-0.5,1.9,0c0.5,0.5,0.5,1.3,0,1.9l-4.3,4.3h3.4V28H7z\"\/><\/svg>\n              <\/a>\n                      <\/div>\n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2024\/06\/Zimmer2_Research_2024-rotated-540x0-c-default.jpg\"\n                    \n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                      <\/div>\n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2024\/06\/Zimmer4_Research_2024-rotated-540x0-c-default.jpg\"\n                    \n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                      <\/div>\n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2024\/06\/Zimmer5_Research_2024-rotated-540x0-c-default.jpg\"\n                    \n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                      <\/div>\n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2024\/06\/Zimmer7_Research_2024-rotated-540x0-c-default.jpg\"\n                    \n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                      <\/div>\n                <div class=\"photo\">\n\n            \n                \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2024\/06\/Zimmer8_Research_2024-rotated-540x0-c-default.jpg\"\n                    \n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                      <\/div>\n      \n      <\/div>\n\n            <div id=\"photo-1431844087\" class=\"photo-lightbox lity-hide\">\n        <div class=\"text-container\">\n          \n                          \n<div class=\"f--field f--description\">\n\n    \n  <p>N2 flux in sediment incubation experiments conducted with sediments from different salt marsh positions<\/p>\n\n\n\n<\/div>\n          \n                  <\/div>\n\n        \n            \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Research_PurifyingPollutants_Photo1-1080x0-c-default.png\"\n                    \n        \n                  alt=\"Graphic showing N2 flux in sediment incubation experiments conducted with sediments from different salt marsh positions\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n      <\/div>\n                                    \n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":74,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-content-detail.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1966","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Purifying Pollutants - USC Sea Grant<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dornsife.usc.edu\/uscseagrant\/purifying-pollutants\/\" 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