{"id":2882,"date":"2023-11-07T21:18:27","date_gmt":"2023-11-07T21:18:27","guid":{"rendered":"https:\/\/live-usc-dornsife.pantheonsite.io\/uscseagrant\/?page_id=2882"},"modified":"2024-04-29T19:50:06","modified_gmt":"2024-04-29T19:50:06","slug":"deep-ddt","status":"publish","type":"page","link":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/","title":{"rendered":"Deep DDT"},"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          Local impact of DDT on deep-sea benthos off Catalina Island\n      <\/h2>\n\n\n<\/div>\n      \n                  \n<div class=\"f--field f--description\">\n\n    \n  <p><span style=\"font-weight: 400;\">In coastal waters off Southern California, industrial dumping of organic pollutants into nearshore and deep ocean water was a recurrent practice in past decades, leaving a legacy of chemical pollution. Recent attention has been given to half a million barrels that were found on the seabed at about 900-meter depth in the San Pedro Basin near Catalina Island. Initial samples show DDT concentrations in the area far exceed the NOAA sediment quality guidelines and raise concerns about potential effects on benthic communities. USC Sea Grant funded a study to investigate the potential impacts of DDT in deep-sea sediments on benthic macrofaunal communities near Catalina Island in terms of abundance, composition, taxonomic diversity, community functional traits, and spatial distribution in the sediment column.\u00a0<\/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 to date<\/b><span style=\"font-weight: 400;\">:<\/span><\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The study completed environmental assessment and sorting, identification, and quantification of macrofauna (and meiofauna) in all samples.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This study represents the first quantitative, high spatial-resolution study on macrobenthos both horizontally (in relation to proximity to barrel) and vertically (in the sediment column) associated with waste barrels dumped in Dumpsite 2.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Results show high variability in both DDT compounds and faunal community structure, with low local impact of DDTs on deep-sea benthos. Macrofaunal diversity was lowest and composition was distinct in sediments within the bacterial halos surrounding the barrels.<br \/>\nnbsp;<br \/>\n<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">There is no clear influence of barrels on macrofaunal community structure and vertical distribution<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<figure id=\"attachment_3512\" aria-describedby=\"caption-attachment-3512\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-large wp-image-3512\" src=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Funding_22-24_Neira-Levin-1024x863.png\" alt=\"microscopic examples of how DDT affects benthic communities\" width=\"1024\" height=\"863\" srcset=\"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Funding_22-24_Neira-Levin-1024x863.png 1024w, https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Funding_22-24_Neira-Levin-300x253.png 300w, https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Funding_22-24_Neira-Levin-768x648.png 768w, https:\/\/dornsife.usc.edu\/uscseagrant\/wp-content\/uploads\/sites\/52\/2023\/11\/Funding_22-24_Neira-Levin.png 1262w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-3512\" class=\"wp-caption-text\">microscopic examples of how DDT affects benthic communities<\/figcaption><\/figure>\n<h3><b>Project Impacts &amp; Application:<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Presentations of data at the Southern California Regional Chapter of the Society of Environmental Toxicology and Chemistry, the California Coastal Chloro-Contamination Conference, the Annual Scripps Student Symposium; and the DDT Community Meeting hosted by USC and California Sea Grant <\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><b>Principal Investigator:<\/b><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Carlos Neira, Ph.D., University of California, San Diego<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Lisa Levin, Ph.D., University of California, San Diego<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><b>Funding: <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">NOAA, 2022-2024<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><b>Additional Info<\/b><span style=\"font-weight: 400;\">:<\/span><\/h3>\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","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-2882","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>Deep DDT - 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\/deep-ddt\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Deep DDT - USC Sea Grant\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/\" \/>\n<meta property=\"og:site_name\" content=\"USC Sea Grant\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T19:50:06+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/\",\"url\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/\",\"name\":\"Deep DDT - USC Sea Grant\",\"isPartOf\":{\"@id\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/#website\"},\"datePublished\":\"2023-11-07T21:18:27+00:00\",\"dateModified\":\"2024-04-29T19:50:06+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Deep DDT\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/#website\",\"url\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/\",\"name\":\"USC Sea Grant\",\"description\":\"USC Dornsife The Urban Ocean Program\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/dornsife.usc.edu\/uscseagrant\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Deep DDT - USC Sea Grant","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/","og_locale":"en_US","og_type":"article","og_title":"Deep DDT - USC Sea Grant","og_url":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/","og_site_name":"USC Sea Grant","article_modified_time":"2024-04-29T19:50:06+00:00","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/","url":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/","name":"Deep DDT - USC Sea Grant","isPartOf":{"@id":"https:\/\/dornsife.usc.edu\/uscseagrant\/#website"},"datePublished":"2023-11-07T21:18:27+00:00","dateModified":"2024-04-29T19:50:06+00:00","breadcrumb":{"@id":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/dornsife.usc.edu\/uscseagrant\/deep-ddt\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/dornsife.usc.edu\/uscseagrant\/"},{"@type":"ListItem","position":2,"name":"Deep DDT"}]},{"@type":"WebSite","@id":"https:\/\/dornsife.usc.edu\/uscseagrant\/#website","url":"https:\/\/dornsife.usc.edu\/uscseagrant\/","name":"USC Sea Grant","description":"USC Dornsife The Urban Ocean Program","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dornsife.usc.edu\/uscseagrant\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/pages\/2882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/comments?post=2882"}],"version-history":[{"count":21,"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/pages\/2882\/revisions"}],"predecessor-version":[{"id":8769,"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/pages\/2882\/revisions\/8769"}],"wp:attachment":[{"href":"https:\/\/dornsife.usc.edu\/uscseagrant\/wp-json\/wp\/v2\/media?parent=2882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}