{"id":5022,"date":"2026-05-27T14:53:25","date_gmt":"2026-05-27T14:53:25","guid":{"rendered":"https:\/\/improveaquaticlife.se\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/"},"modified":"2026-06-26T11:47:15","modified_gmt":"2026-06-26T11:47:15","slug":"river-atran-restoration-could-save-the-sea-lamprey","status":"publish","type":"post","link":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/","title":{"rendered":"River \u00c4tran restoration could save the sea lamprey"},"content":{"rendered":"<div><b>The sea lamprey is an ancient group of fish that existed long before the age of dinosaurs &#8211; but today the species is critically endangered. Migration barriers, habitat destruction and changes in the ocean have led to a dramatic decline. In River \u00c4tran, extensive restoration efforts are underway to benefit the species, and in the middle of central Falkenberg, electrofishing is being carried out to locate larvae of the secretive fish.  <\/b><\/div>\n<div>\n<div id=\"attachment_5016\" style=\"width: 1968px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-5016\" class=\"size-full wp-image-5016\" src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/webb_Falkenberg_Arnham.jpg\" alt=\"\" width=\"1958\" height=\"1224\" srcset=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/webb_Falkenberg_Arnham.jpg 1958w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/webb_Falkenberg_Arnham-768x480.jpg 768w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/webb_Falkenberg_Arnham-1536x960.jpg 1536w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/webb_Falkenberg_Arnham-1152x720.jpg 1152w\" sizes=\"(max-width: 1958px) 100vw, 1958px\" \/><p id=\"caption-attachment-5016\" class=\"wp-caption-text\">The River \u00c4tran winds through Falkenberg before it flows into the Kattegat. Photo: Mathias Arnham<\/p><\/div>\n<p style=\"font-weight: 400;\">The sea lamprey is one of the country&#8217;s most threatened fish species and is a target species within Improve Aquatic LIFE. The River \u00c4tran has long been one of Sweden&#8217;s most important rivers for the species. The sea lamprey lives much of its life in the sea but migrates up rivers like River \u00c4tran to spawn. The larvae then spend several years burrowed in the river&#8217;s soft sediments before migrating to the sea.   <\/p>\n<div id=\"attachment_5012\" style=\"width: 1968px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-5012\" class=\"size-full wp-image-5012\" src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6811_webb.jpg\" alt=\"\" width=\"1958\" height=\"1224\" srcset=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6811_webb.jpg 1958w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6811_webb-768x480.jpg 768w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6811_webb-1536x960.jpg 1536w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6811_webb-1152x720.jpg 1152w\" sizes=\"(max-width: 1958px) 100vw, 1958px\" \/><p id=\"caption-attachment-5012\" class=\"wp-caption-text\">Swedish Anglers Association biologists Daniel Wendesten and Malin Kjellin electrofishing.<br \/>Photo: Nicka Hellenberg<\/p><\/div>\n<p style=\"font-weight: 400;\">A major reason for the decline is hydropower and migration barriers that make it difficult for sea lamprey to reach their spawning grounds. In addition, many fishways are built for salmon and trout and do not work well for the sea lamprey, which is a weaker swimmer and cannot jump. The species is also affected by cleared riverbeds, poor water quality and the decline of large fish in the sea &#8211; which it feeds on during its marine phase.  <\/p>\n<p style=\"font-weight: 400;\"><strong>Sea lampreys in the River \u00c4tran are located<br \/>\n<\/strong>In 2009-2010, the number of sea lampreys in the River \u00c4tran was estimated to be at least 1,500 individuals, but the population has declined dramatically. In the 2025 survey, only 28 individuals were recorded in the entire River \u00c4tran, showing how acute the situation is. <\/p>\n<div id=\"attachment_5013\" style=\"width: 1968px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-5013\" class=\"size-full wp-image-5013\" src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6821_webb.jpg\" alt=\"\" width=\"1958\" height=\"1224\" srcset=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6821_webb.jpg 1958w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6821_webb-768x480.jpg 768w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6821_webb-1536x960.jpg 1536w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6821_webb-1152x720.jpg 1152w\" sizes=\"(max-width: 1958px) 100vw, 1958px\" \/><p id=\"caption-attachment-5013\" class=\"wp-caption-text\">Electrofishing for sea lamprey larvae takes place on the shallow sediment banks. Photo: Nicka Hellenberg<\/p><\/div>\n<p style=\"font-weight: 400;\">But several restoration efforts are underway in the River \u00c4tran &#8211; both within Improve Aquatic LIFE and in other nature conservation projects. These include improving free migration routes, restoring spawning beds and creating better environments for both larval and adult sea lamprey. Species such as salmon, trout, eel and Freshwater pearl mussel also benefit from the measures.  <\/p>\n<p style=\"font-weight: 400;\"><strong>Findings in Falkenberg city center<br \/>\n<\/strong>In central Falkenberg, Swedish Anglers Association biologists Daniel Wendesten and Malin Kjellin have been electrofishing, to inventory sea lampreys and gain knowledge about the number of individuals in the River \u00c4tran, but also to help develop methods for studying the species.<\/p>\n<div id=\"attachment_5014\" style=\"width: 1968px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-5014\" class=\"size-full wp-image-5014\" src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6829_webb.jpg\" alt=\"\" width=\"1958\" height=\"1224\" srcset=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6829_webb.jpg 1958w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6829_webb-768x480.jpg 768w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6829_webb-1536x960.jpg 1536w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6829_webb-1152x720.jpg 1152w\" sizes=\"(max-width: 1958px) 100vw, 1958px\" \/><p id=\"caption-attachment-5014\" class=\"wp-caption-text\">Inventory of sea lamprey, in the middle of Falkenberg. Photo: Nicka Hellenberg<\/p><\/div>\n<p style=\"font-weight: 400;\">&#8211; &#8220;In most cases, you electrofish in flowing water and catch fish moving freely in the water, but sea lamprey larvae are buried in sediment banks in calm flowing areas, so here you have to adapt the method and get the larvae to leave the sediment so that you can catch them,&#8221; explains Daniel.<br \/>\nOn this day, Daniel and Malin were pleased to find a sea lamprey larva in the River \u00c4tran. A number of river lamprey and brook lamprey larvae were also caught, as well as eel fry and juvenile tench. <\/p>\n<div id=\"attachment_5015\" style=\"width: 1968px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-5015\" class=\"size-full wp-image-5015\" src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6869_webb-2.jpg\" alt=\"\" width=\"1958\" height=\"1224\" srcset=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6869_webb-2.jpg 1958w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6869_webb-2-768x480.jpg 768w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6869_webb-2-1536x960.jpg 1536w, https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6869_webb-2-1152x720.jpg 1152w\" sizes=\"(max-width: 1958px) 100vw, 1958px\" \/><p id=\"caption-attachment-5015\" class=\"wp-caption-text\">The different sea lamprey larvae can be difficult to distinguish. The tail of this larva reveals the species: sea lamprey!  Photo: Nicka Hellenberg<\/p><\/div>\n<p style=\"font-weight: 400;\"><strong>Improve Aquatic LIFE measures in River \u00c4tran<br \/>\n<\/strong>The headwaters of River \u00c4tran are in V\u00e4sterg\u00f6tland, but mainly this west coast river flows through Halland and empties into the Kattegat. The last part of the River \u00c4tran meanders through central Falkenberg. During the 1970s, the River \u00c4tran was severely affected by acidification, which nearly wiped out its wild salmon population. Extensive liming helped the ecosystem recover and the salmon returned. However, migration barriers and the lack of spawning grounds have affected salmon and many other species.    <\/p>\n<p style=\"font-weight: 400;\">Under Improve Aquatic LIFE, several measures are being implemented in the River \u00c4tran and its tributaries to enhance biodiversity, restore natural aquatic habitats, remove or rebuild migration barriers and restore spawning and nursery areas for fish and mussels.<\/p>\n<\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The sea lamprey is an ancient group of fish that existed long before the age of dinosaurs &#8211; but today the species is critically endangered. Migration barriers, habitat destruction and changes in the ocean have led to a dramatic decline. In River \u00c4tran, extensive restoration efforts are underway to benefit the species, and in the middle of central Falkenberg, electrofishing is being carried out to locate larvae of the secretive fish.  <\/p>\n","protected":false},"author":2,"featured_media":5024,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36,84,35,34],"tags":[],"class_list":["post-5022","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-latest-news","category-river-atran","category-salmon","category-sea-lamprey"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>River \u00c4tran restoration could save the sea lamprey - Improve Aquatic Life<\/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:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"River \u00c4tran restoration could save the sea lamprey\" \/>\n<meta property=\"og:description\" content=\"The sea lamprey is an ancient group of fish that existed long before the age of dinosaurs - but today the species is critically endangered. Migration barriers, habitat destruction and changes in the ocean have led to a dramatic decline. In River \u00c4tran, extensive restoration efforts are underway to benefit the species, and in the middle of central Falkenberg, electrofishing is being carried out to locate larvae of the secretive fish.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/\" \/>\n<meta property=\"og:site_name\" content=\"Improve Aquatic Life\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-27T14:53:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-26T11:47:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1958\" \/>\n\t<meta property=\"og:image:height\" content=\"1224\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nicka Hellenberg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nicka Hellenberg\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/\"},\"author\":{\"name\":\"Nicka Hellenberg\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#\\\/schema\\\/person\\\/e5d442f2b97a584babc10e82b6addc52\"},\"headline\":\"River \u00c4tran restoration could save the sea lamprey\",\"datePublished\":\"2026-05-27T14:53:25+00:00\",\"dateModified\":\"2026-06-26T11:47:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/\"},\"wordCount\":717,\"publisher\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/Falkenberg_havsnejon_Nicka-6809_webb.jpg\",\"articleSection\":[\"Latest news\",\"River \u00c4tran\",\"Salmon\",\"Sea lamprey\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/\",\"name\":\"River \u00c4tran restoration could save the sea lamprey - Improve Aquatic Life\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/Falkenberg_havsnejon_Nicka-6809_webb.jpg\",\"datePublished\":\"2026-05-27T14:53:25+00:00\",\"dateModified\":\"2026-06-26T11:47:15+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#primaryimage\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/Falkenberg_havsnejon_Nicka-6809_webb.jpg\",\"contentUrl\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/Falkenberg_havsnejon_Nicka-6809_webb.jpg\",\"width\":1958,\"height\":1224,\"caption\":\"Photo: Nicka Hellenberg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/2026\\\/05\\\/27\\\/river-atran-restoration-could-save-the-sea-lamprey\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Hem\",\"item\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/home\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"River \u00c4tran restoration could save the sea lamprey\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/\",\"name\":\"Improve Aquatic Life\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#organization\",\"name\":\"Improve Aquatic Life\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/new_logo_improve_120.png\",\"contentUrl\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/new_logo_improve_120.png\",\"width\":388,\"height\":120,\"caption\":\"Improve Aquatic Life\"},\"image\":{\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"description\":\"Improve Aquatic LIFE \u00e4r namnet p\u00e5 Europas st\u00f6rsta vattenv\u00e5rdsprojekt med syfte att restaurera vattenmilj\u00f6er i v\u00e5tmarker, sj\u00f6ar vattendrag och kustvatten i nio olika l\u00e4n, i s\u00f6dra Sverige. Improve Aquatic LIFE finansieras till st\u00f6rsta delen av EU samt av Havs- och vattenmyndigheten, Naturv\u00e5rdsverket och \u00f6vriga projektpartners.\",\"email\":\"info@improveaquaticlife.se\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/#\\\/schema\\\/person\\\/e5d442f2b97a584babc10e82b6addc52\",\"name\":\"Nicka Hellenberg\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/litespeed\\\/avatar\\\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403\",\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/litespeed\\\/avatar\\\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403\",\"contentUrl\":\"https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/litespeed\\\/avatar\\\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403\",\"caption\":\"Nicka Hellenberg\"},\"sameAs\":[\"http:\\\/\\\/www.niokommunikation.se\"],\"url\":\"https:\\\/\\\/improveaquaticlife.se\\\/en\\\/author\\\/nicka-hellenberg\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"River \u00c4tran restoration could save the sea lamprey - Improve Aquatic Life","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:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/","og_locale":"en_US","og_type":"article","og_title":"River \u00c4tran restoration could save the sea lamprey","og_description":"The sea lamprey is an ancient group of fish that existed long before the age of dinosaurs - but today the species is critically endangered. Migration barriers, habitat destruction and changes in the ocean have led to a dramatic decline. In River \u00c4tran, extensive restoration efforts are underway to benefit the species, and in the middle of central Falkenberg, electrofishing is being carried out to locate larvae of the secretive fish.","og_url":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/","og_site_name":"Improve Aquatic Life","article_published_time":"2026-05-27T14:53:25+00:00","article_modified_time":"2026-06-26T11:47:15+00:00","og_image":[{"width":1958,"height":1224,"url":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg","type":"image\/jpeg"}],"author":"Nicka Hellenberg","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Nicka Hellenberg","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#article","isPartOf":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/"},"author":{"name":"Nicka Hellenberg","@id":"https:\/\/improveaquaticlife.se\/en\/#\/schema\/person\/e5d442f2b97a584babc10e82b6addc52"},"headline":"River \u00c4tran restoration could save the sea lamprey","datePublished":"2026-05-27T14:53:25+00:00","dateModified":"2026-06-26T11:47:15+00:00","mainEntityOfPage":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/"},"wordCount":717,"publisher":{"@id":"https:\/\/improveaquaticlife.se\/en\/#organization"},"image":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#primaryimage"},"thumbnailUrl":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg","articleSection":["Latest news","River \u00c4tran","Salmon","Sea lamprey"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/","url":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/","name":"River \u00c4tran restoration could save the sea lamprey - Improve Aquatic Life","isPartOf":{"@id":"https:\/\/improveaquaticlife.se\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#primaryimage"},"image":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#primaryimage"},"thumbnailUrl":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg","datePublished":"2026-05-27T14:53:25+00:00","dateModified":"2026-06-26T11:47:15+00:00","breadcrumb":{"@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#primaryimage","url":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg","contentUrl":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2026\/05\/Falkenberg_havsnejon_Nicka-6809_webb.jpg","width":1958,"height":1224,"caption":"Photo: Nicka Hellenberg"},{"@type":"BreadcrumbList","@id":"https:\/\/improveaquaticlife.se\/en\/2026\/05\/27\/river-atran-restoration-could-save-the-sea-lamprey\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Hem","item":"https:\/\/improveaquaticlife.se\/en\/home\/"},{"@type":"ListItem","position":2,"name":"River \u00c4tran restoration could save the sea lamprey"}]},{"@type":"WebSite","@id":"https:\/\/improveaquaticlife.se\/en\/#website","url":"https:\/\/improveaquaticlife.se\/en\/","name":"Improve Aquatic Life","description":"","publisher":{"@id":"https:\/\/improveaquaticlife.se\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/improveaquaticlife.se\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/improveaquaticlife.se\/en\/#organization","name":"Improve Aquatic Life","url":"https:\/\/improveaquaticlife.se\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/improveaquaticlife.se\/en\/#\/schema\/logo\/image\/","url":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png","contentUrl":"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png","width":388,"height":120,"caption":"Improve Aquatic Life"},"image":{"@id":"https:\/\/improveaquaticlife.se\/en\/#\/schema\/logo\/image\/"},"description":"Improve Aquatic LIFE \u00e4r namnet p\u00e5 Europas st\u00f6rsta vattenv\u00e5rdsprojekt med syfte att restaurera vattenmilj\u00f6er i v\u00e5tmarker, sj\u00f6ar vattendrag och kustvatten i nio olika l\u00e4n, i s\u00f6dra Sverige. Improve Aquatic LIFE finansieras till st\u00f6rsta delen av EU samt av Havs- och vattenmyndigheten, Naturv\u00e5rdsverket och \u00f6vriga projektpartners.","email":"info@improveaquaticlife.se"},{"@type":"Person","@id":"https:\/\/improveaquaticlife.se\/en\/#\/schema\/person\/e5d442f2b97a584babc10e82b6addc52","name":"Nicka Hellenberg","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/improveaquaticlife.se\/wp-content\/litespeed\/avatar\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403","url":"https:\/\/improveaquaticlife.se\/wp-content\/litespeed\/avatar\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403","contentUrl":"https:\/\/improveaquaticlife.se\/wp-content\/litespeed\/avatar\/6285ba08bf2179b724f956754906bd51.jpg?ver=1783007403","caption":"Nicka Hellenberg"},"sameAs":["http:\/\/www.niokommunikation.se"],"url":"https:\/\/improveaquaticlife.se\/en\/author\/nicka-hellenberg\/"}]}},"_links":{"self":[{"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/posts\/5022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/comments?post=5022"}],"version-history":[{"count":2,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/posts\/5022\/revisions"}],"predecessor-version":[{"id":5126,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/posts\/5022\/revisions\/5126"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/media\/5024"}],"wp:attachment":[{"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/media?parent=5022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/categories?post=5022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/improveaquaticlife.se\/en\/wp-json\/wp\/v2\/tags?post=5022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}