{"id":2186041,"date":"2025-03-09T12:00:39","date_gmt":"2025-03-09T11:00:39","guid":{"rendered":"https:\/\/focusingonwildlife.com\/news\/?p=2186041"},"modified":"2025-03-08T15:13:14","modified_gmt":"2025-03-08T14:13:14","slug":"wild-swimmers-are-safer-in-lakes-and-rivers-where-beavers-live-thanks-to-their-pollution-blocking-dams-study-finds","status":"publish","type":"post","link":"https:\/\/focusingonwildlife.com\/news\/wild-swimmers-are-safer-in-lakes-and-rivers-where-beavers-live-thanks-to-their-pollution-blocking-dams-study-finds\/","title":{"rendered":"Wild swimmers are safer in lakes and rivers where beavers live, thanks to their pollution blocking dams, study finds"},"content":{"rendered":"<p>Wild swimmers are safer in lakes, rivers, and ponds inhabited by beavers, according to a new study.<\/p>\n<p>Researchers at the University of Stirling in Scotland have uncovered that beaver dams drastically improve the water quality of British eco-systems.<\/p>\n<p>Their work, detailed in the Science of the Total Environment journal, monitored how rodent populations affect pollution levels in British waters. For more than two years, researchers sampled water from different beaver-engineered water systems and found that dams reduce \u2018pollution peaks\u2019 by up to 95%.<\/p>\n<p>Beavers build dams using logs, branches, rocks, and mud, which slow the flow of water and create ponds. This process traps harmful microbial pollutants like E.coli, which silts and settles near the dams, cleaning the water for wild swimmers downstream.<\/p>\n<p>&#8220;These ponds act as natural traps for pollutants and silt, especially when muddy or contaminated water flows in from upstream,&#8221; co-author Nigel Willby told The Times.<\/p>\n<p>\u201cThe result is not only a reduction in pollution but also a delayed movement of contaminants, which benefits downstream ecosystems.&#8221;<\/p>\n<figure class=\"thumbnail wp-caption alignnone\" style=\"width: 980px\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/ywAAAAAAQABAAACAUwAOw==\" fifu-lazy=\"1\" fifu-data-sizes=\"auto\" fifu-data-srcset=\"https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=75&amp;resize=75&amp;ssl=1 75w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=100&amp;resize=100&amp;ssl=1 100w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=150&amp;resize=150&amp;ssl=1 150w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=240&amp;resize=240&amp;ssl=1 240w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=320&amp;resize=320&amp;ssl=1 320w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=500&amp;resize=500&amp;ssl=1 500w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=640&amp;resize=640&amp;ssl=1 640w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=800&amp;resize=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=1024&amp;resize=1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=1280&amp;resize=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1&amp;w=1600&amp;resize=1600&amp;ssl=1 1600w\" class=\"size-thumbnail\" fifu-data-src=\"https:\/\/i0.wp.com\/cdn.mos.cms.futurecdn.net\/hnbf8XUk7RkkKbWXz73SCd-970-80.png.webp?ssl=1\" alt=\"A beaver dam near the Teton mountains, Wyoming (Image credit: Getty Images)\" width=\"970\" height=\"546\" title=\"\"><figcaption class=\"caption wp-caption-text\">A beaver dam near the Teton mountains, Wyoming (Image credit: Getty Images)<\/figcaption><\/figure>\n<p>Described as a \u2018chemical cocktail\u2019 by lawmakers, British and Northern Irish waters have been bombarded with pollution in recent years. Thanks to the excessive use of pesticides and fertilizer, and the release of untreated sewage, many previously popular swimming spots are now avoided.<\/p>\n<p>Pollution has had a devastating effect on the UK&#8217;s wild swimming community. Last summer, at least 35 athletes fell ill after swimming in the River Thames during the Royal Windsor Triathlon. There were several other similar incidents throughout 2024.<\/p>\n<p>Microbial pollutants like E.coli are particularly dangerous to wild swimmers and can cause various gastrointestinal illnesses and infections.<\/p>\n<p>Beavers became extinct in Britain more than 400 years ago due to excessive hunting.<\/p>\n<p>In 2002, rogue rewilders released beaver families in Kent to improve the local habitat. Illegal releases were followed by an official re-introduction program seven years later. There are now more than 400 beavers in Britain.<\/p>\n<p>Beaver-built dams typically range in size from a few feet to upwards of 300 feet \/ 91m. The world&#8217;s largest known dam spans 2,543 feet \/ 775m in Wood Buffalo National Park in Alberta, Canada.<\/p>\n<p>Last month, beavers in the Czech Republic gained notoriety by building a network of dams exactly where authorities had been planning to construct them.<\/p>\n<p>Officials at the Brdy protected landscape area had just gained approval for the project, which would&#8217;ve set them back the equivalent of $1,257,000 (USD) when beavers spontaneously built the structures.<\/p>\n<p>Experts assessing the work said beavers usually do a better job at dam building than humans.<\/p>\n<p>&#8220;Beavers always know best,&#8221; Jaroslav Obermajer, head of the Central Bohemian office of the Czech Nature and Landscape Protection Agency told Radio Prague International.<\/p>\n<p>He added: &#8220;The places where they build dams are always chosen just right &#8211; better than when we design it on paper.&#8221;<\/p>\n<p><i>This <a href=\"https:\/\/www.advnture.com\/news\/wild-swimmers-are-safer-in-lakes-and-rivers-where-beavers-live-thanks-to-their-pollution-blocking-dams-study-finds\" target=\"_blank\" rel=\"noopener nofollow external noreferrer\" data-wpel-link=\"external\">article<\/a> by Will Symons was first published by Advnture on 27 February 2025. Lead Image: There are roughly 400 beavers living in Britain (Image credit: Troy Harrison).<br \/>\n<\/i><\/p>\n<h2>What you can do<\/h2>\n<p>Help to save wildlife by donating as little as $1. Choose what it will be used for: <br \/>forests, oceans, wildlife or climate.<\/p>\n<p><script type=\"text\/javascript\" defer=\"\" src=\"https:\/\/donorbox.org\/install-popup-button.js\" id=\"donorbox-popup-button-installer\"> <\/script><a id=\"preview_inline_popup_button\" class=\"dbox-donation-button\" style=\"background: #0dc5dc; color: #ffffff; text-decoration: none; font-family: Verdana, sans-serif; display: flex; gap: 8px; width: fit-content; font-size: 16px; border-radius: 5px; line-height: 24px; padding: 8px 24px;\" href=\"https:\/\/donorbox.org\/focusing-on-wildlife-needs-your-support?amount=50\" data-reminder-widget-enabled=\"true\" target=\"_blank\" rel=\"noopener nofollow external noreferrer\" data-wpel-link=\"external\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/ywAAAAAAQABAAACAUwAOw==\" fifu-lazy=\"1\" fifu-data-sizes=\"auto\" fifu-data-srcset=\"https:\/\/donorbox.org\/images\/white_logo.svg 75w, https:\/\/donorbox.org\/images\/white_logo.svg 100w, https:\/\/donorbox.org\/images\/white_logo.svg 150w, https:\/\/donorbox.org\/images\/white_logo.svg 240w, https:\/\/donorbox.org\/images\/white_logo.svg 320w, https:\/\/donorbox.org\/images\/white_logo.svg 500w, https:\/\/donorbox.org\/images\/white_logo.svg 640w, https:\/\/donorbox.org\/images\/white_logo.svg 800w, https:\/\/donorbox.org\/images\/white_logo.svg 1024w, https:\/\/donorbox.org\/images\/white_logo.svg 1280w, https:\/\/donorbox.org\/images\/white_logo.svg 1600w\" fifu-data-src=\"https:\/\/donorbox.org\/images\/white_logo.svg\" alt=\"\" title=\"\">Donate<\/a><\/p>\n<p><em>Our <a href=\"https:\/\/focusingonwildlife.com\/news\/wildlife-charities-supported-by-focusing-on-wildlife\/\" data-wpel-link=\"internal\">conservation partners<\/a> spend at least 80 percent of the money they raise on actual fieldwork, rather than administration and fundraising. <\/em><\/p>\n<hr style=\"border-top: 1px solid white;\" \/>\n","protected":false},"excerpt":{"rendered":"<p>Wild swimmers are safer in lakes, rivers, and ponds inhabited by beavers, according to a new study. Researchers at the University of Stirling in Scotland have uncovered that beaver dams drastically improve the water quality of British eco-systems. Their work, detailed in the Science of the Total Environment journal, monitored how rodent populations affect pollution [&hellip;]<\/p>\n","protected":false},"author":1178,"featured_media":2203980,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/cdn.mos.cms.futurecdn.net\/VWHsz7Bap3iPpDugqd5AAH-650-80.jpg.webp","fifu_image_alt":"Wild swimmers are safer in lakes and rivers where beavers live, thanks to their pollution blocking dams, study finds","footnotes":""},"categories":[6985,5],"tags":[11842,3150,7779],"class_list":["post-2186041","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-wildlife","tag-beavers","tag-pesticides","tag-wyoming"],"_links":{"self":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts\/2186041","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/users\/1178"}],"replies":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/comments?post=2186041"}],"version-history":[{"count":0,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/posts\/2186041\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/media\/2203980"}],"wp:attachment":[{"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/media?parent=2186041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/categories?post=2186041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/focusingonwildlife.com\/news\/wp-json\/wp\/v2\/tags?post=2186041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}