{"id":1899,"date":"2025-01-28T15:25:06","date_gmt":"2025-01-28T15:25:06","guid":{"rendered":"https:\/\/improveaquaticlife.se\/viran\/"},"modified":"2025-06-25T18:23:58","modified_gmt":"2025-06-25T18:23:58","slug":"viran","status":"publish","type":"page","link":"https:\/\/improveaquaticlife.se\/en\/viran\/","title":{"rendered":"River Vir\u00e5n"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_section background_position=&#8221;center center&#8221; css=&#8221;.vc_custom_1739286196120{background-image: url(https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/backdrop_projekt.jpg?id=1219) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_name=&#8221;Sidhuvud&#8221;][vc_row][vc_column]<div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_header_69f303066befd h1.page-title, #ut_header_69f303066befd h1.page-title span { color:#ffffff; }#ut_header_69f303066befd h1.page-title { font-size:60px !important;line-height:125% !important;letter-spacing:-0.03em; }#ut_header_69f303066befd.page-title-module .lead { color:#ffffff; }#ut_header_69f303066befd.page-title-module .lead p { color:#ffffff; }<\/style><header id=\"ut_header_69f303066befd\" class=\"page-header page-title-module  ut-no-title-linebreak-mobile ut-no-lead-linebreak-mobile pt-style-7 header-left header-tablet-left header-mobile-center element-with-custom-line-height\"><div class=\"element-with-custom-line-height\" ><h1 data-title=\"River Vir\u00e5n\"  data-responsive-font=\"page_title\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;60&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;125&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;,&quot;letter-spacing&quot;:{&quot;desktop_large&quot;:&quot;-0.03&quot;}}\" class=\"page-title  \"><span>River Vir\u00e5n<\/span><\/h1><\/div><\/header><\/div>[\/vc_column][\/vc_row][\/vc_section][vc_section css=&#8221;.vc_custom_1739286221218{background-color: linear-gradient(to top, transparent 0%, #e8f5fa 100%) !important;}&#8221; el_name=&#8221;Projekt sammanfattning&#8221;][vc_row][vc_column width=&#8221;1\/2&#8243;]<div  class=\"wpb_content_element   clearfix\"><style type=\"text\/css\">#ut_am_69f3030672748 { opacity: 1; }#ut_am_wrap_69f303067274a .ut-image-gallery-item-caption-title h3 { letter-spacing: 0em; }#ut_am_wrap_69f303067274a .ut-gallery-slider-caption { font-weight: bold; }#ut_am_wrap_69f303067274a { text-align: center; }@media (min-width: 768px) and (max-width: 1024px) { #ut_am_wrap_69f303067274a { text-align: center !important; } }@media (max-width: 767px) { #ut_am_wrap_69f303067274a { text-align: center !important; } }<\/style><div id=\"ut_am_wrap_69f303067274a\" class=\"ut-image-gallery-image \"><div id=\"ut_reveal_69f303067274b\"  data-appear-top-offset=\"auto\" class=\"ut-animated-image-item ut-image-gallery-item ut-animation-done \"><a class=\"ut-deactivated-link\" href=\"#\"><div class=\"ut-animated-image-zoom\"><img decoding=\"async\" class=\"ut-lazy skip-lazy ut-animated-image \"  id=\"ut_am_69f3030672748\" src=\"data:image\/svg+xml;charset=utf-8,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox%3D'0 0 1958 1224'%2F%3E\" data-src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/02\/lekvandrande_havsoring_foto_Nicka-1691.jpg\" width=\"1958\" height=\"1224\" alt=\"Lekvandrande havs\u00f6ring.\"\/><\/div><\/a><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/12&#8243;][\/vc_column][vc_column width=&#8221;5\/12&#8243;]<div class=\"wpb_content_element  vc_custom_1750874083107\"><style type=\"text\/css\">#ut_header_69f3030673202 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_69f3030673202\" class=\"section-header  ut-no-title-linebreak-mobile ut-no-lead-linebreak-mobile pt-style-7 header-left header-tablet-left header-mobile-center element-with-custom-line-height\"><div class=\"element-with-custom-line-height\" ><h2 data-title=\"Restored wetlands and strengthened mussel populations\"  data-responsive-font=\"section_title\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;50&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;125&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;,&quot;letter-spacing&quot;:{&quot;desktop_large&quot;:&quot;-0.03&quot;}}\" class=\"section-title  \"><span>Restored wetlands and strengthened mussel populations<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>The rich ecosystem of the Vir\u00e5n river makes it important for biodiversity and it is also a Natura 2000 site. River Vir\u00e5n flows through a landscape with many lakes surrounded by farmland and deciduous forests. It is home to many species of fish, including the relatively rare species of lamprey. It is also home to thick-shelled mussels and otters. Under Improve Aquatic LIFE, habitat management will be carried out to improve fish habitats in the river as well as in wetlands and on the coast.<\/p>\n<\/div><\/header><\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/4&#8243;][ut_number_counter icon_type=&#8221;fontawesome&#8221; icon_font_size=&#8221;30&#8243; counter_font_source=&#8221;google&#8221; counter_google_fonts=&#8221;font_family:Work%20Sans%3A100%2C200%2C300%2Cregular%2C500%2C600%2C700%2C800%2C900%2C100italic%2C200italic%2C300italic%2Citalic%2C500italic%2C600italic%2C700italic%2C800italic%2C900italic|font_style:600%20bold%20regular%3A600%3Anormal&#8221; counter_font_size=&#8221;50&#8243; counter_prefix_font_weight=&#8221;&#8221; counter_suffix_font_weight=&#8221;&#8221; to=&#8221;229&#8243; desccolor=&#8221;#008060&#8243; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-arrows-alt-h&#8221;]kilometer long[\/ut_number_counter][\/vc_column][vc_column width=&#8221;1\/4&#8243;][ut_number_counter speed=&#8221;1850&#8243; icon_type=&#8221;fontawesome&#8221; icon_font_size=&#8221;30&#8243; counter_font_source=&#8221;google&#8221; counter_google_fonts=&#8221;font_family:Work%20Sans%3A100%2C200%2C300%2Cregular%2C500%2C600%2C700%2C800%2C900%2C100italic%2C200italic%2C300italic%2Citalic%2C500italic%2C600italic%2C700italic%2C800italic%2C900italic|font_style:600%20bold%20regular%3A600%3Anormal&#8221; counter_font_size=&#8221;50&#8243; counter_prefix_font_weight=&#8221;&#8221; counter_suffix_font_weight=&#8221;&#8221; to=&#8221;4500&#8243; desccolor=&#8221;#008060&#8243; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-expand-arrows-alt&#8221;]km\u00b2 large catchment area[\/ut_number_counter][\/vc_column][vc_column width=&#8221;1\/4&#8243;][ut_number_counter icon_type=&#8221;fontawesome&#8221; icon_font_size=&#8221;30&#8243; counter_font_source=&#8221;google&#8221; counter_google_fonts=&#8221;font_family:Work%20Sans%3A100%2C200%2C300%2Cregular%2C500%2C600%2C700%2C800%2C900%2C100italic%2C200italic%2C300italic%2Citalic%2C500italic%2C600italic%2C700italic%2C800italic%2C900italic|font_style:600%20bold%20regular%3A600%3Anormal&#8221; counter_font_size=&#8221;50&#8243; counter_prefix_font_weight=&#8221;&#8221; counter_suffix_font_weight=&#8221;&#8221; to=&#8221;30&#8243; desccolor=&#8221;#008060&#8243; icon=&#8221;fa-solid fa-fish&#8221; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221;]the number of fish species detected[\/ut_number_counter][\/vc_column][vc_column width=&#8221;1\/4&#8243;][ut_number_counter icon_type=&#8221;fontawesome&#8221; icon_font_size=&#8221;30&#8243; counter_font_source=&#8221;google&#8221; counter_google_fonts=&#8221;font_family:Work%20Sans%3A100%2C200%2C300%2Cregular%2C500%2C600%2C700%2C800%2C900%2C100italic%2C200italic%2C300italic%2Citalic%2C500italic%2C600italic%2C700italic%2C800italic%2C900italic|font_style:600%20bold%20regular%3A600%3Anormal&#8221; counter_font_size=&#8221;50&#8243; counter_prefix_font_weight=&#8221;&#8221; counter_suffix_font_weight=&#8221;&#8221; to=&#8221;78&#8243; desccolor=&#8221;#008060&#8243; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-water&#8221;]km of footpaths opened when 8 barriers were removed[\/ut_number_counter][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<p style=\"font-weight: 400;\">River Vir\u00e5n is located in south-eastern Sweden and is 160 kilometers long. It has its headwaters from lakes Ver and Illern in the north and from lake Hummeln in the south. The two main branches meet about six kilometers upstream of the Baltic Sea. The catchment area consists of a complex system of oligotrophic lakes and streams in a steep ravine terrain, surrounded by agricultural land and forests with large elements of deciduous trees. The entire Vir\u00e5n water system is a Natura 2000 site and is also of national interest for nature conservation.    <\/p>\n<blockquote><p>Important for rare benthic animals and particularly valuable for the conservation of the endangered thick-shelled mussel<\/p><\/blockquote>\n<p><strong>Biodiversity<br \/>\n<\/strong>River Vir\u00e5n has a high biodiversity with about 20 species of fish, of which the coelacanth and bull head are prioritized in the Natura 2000 site management plan. The glacial relict fish horned cusk occurs in the river, and four species of glacial relict crustaceans are found in the lakes: <em>Mysis relicta, Pallaseopsis quadrispinosa, Monoporeia affinis <\/em>and<em> Limnocalanus macrurus<\/em> <\/p>\n<p>River Vir\u00e5n is also important for rare benthic animals. Six species of large mussels are found in the system, including the endangered thick-shelled mussel. The population in River Vir\u00e5n is the largest in the county, making it particularly valuable for the conservation of the species. <\/p>\n<p><strong>Also valuable for terrestrial species<br \/>\n<\/strong>River Vir\u00e5n also has high values for terrestrial species linked to aquatic environments. It provides a mosaic of habitats for breeding and roosting birds, such as kingfishers and oystercatchers. The upper parts of the catchment also support the otter, which is a priority species under the EU Habitats Directive.  <\/p>\n<p>In addition to River Vir\u00e5n and its lake system, the estuaries, coastal lagoons and large bays at the mouth of the Baltic Sea are also a separate Natura 2000 site with several protected habitats and bird species.<\/p>\n<p><strong>Impact on ecological status<br \/>\n<\/strong>According to the EU Water Framework Directive (WFD), River Vir\u00e5n currently has a moderate ecological status. It is affected by morphological changes, straightening and ditching which have changed the bottom structure and many habitats. Migration barriers have reduced connectivity so that migrating fish can no longer reach their spawning and nursery areas. It has also had a negative impact on the reproduction of mussels, which depend on host fish such as eurasian minnow and bull head, which have declined as a result of the changes. Large areas of wetlands and several lakes have been drained, which has changed the hydrology and led to recurrent water shortages during the summers. The coastal ecosystems of Kalmarsund and the Vir\u00e5n estuary are heavily burdened by excess nutrients, affecting the recruitment of predatory fish such as pike and perch.     <\/p>\n<p><strong>Restoration measures<br \/>\n<\/strong>According to the management plan for the Natura 2000 site, it is a priority to ensure free migration, favor the reproduction of the thick-shelled mussel and restore wetlands.<\/p>\n<p>Within the project, a migration barrier will be removed, opening 13 kilometers of the river for free migration for fish and other species. Biotope conservation will be carried out on around 13,500 meters of River Vir\u00e5n, focusing on important habitats for migratory fish and thick-shelled mussels. Restoration of 50 hectares of wetlands and shallow lakes will be carried out to recreate a more natural hydrology downstream. Measures in estuaries and coastal areas will be implemented to improve habitats and enhance recruitment of predatory fish.   <\/p>\n<p><strong>Enhanced conservation status and natural values<br \/>\n<\/strong>These actions will improve connectivity, hydrology, water quality, biodiversity, fish production and habitats. They will strengthen the conservation status of the common coypu, bull head and the thick-shelled mussel, and benefit the species eurasian minnow typical of the Natura 2000 site, which is important for mussel reproduction. <\/p>\n<p>The restorations will help to preserve and develop the high natural values of the river, with a particular focus on maintaining and enhancing important habitats for wildlife, reducing water scarcity and improving the ecological status of River Vir\u00e5n and its coastal environments.[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section][vc_section disable_element=&#8221;yes&#8221; el_name=&#8221;Projektf\u00f6rfarande&#8221;][vc_row][vc_column width=&#8221;1\/2&#8243;]<style type=\"text\/css\">#ut_custom_heading69f3030673ccb { color:#008060; }#ut_custom_heading69f3030673ccb { font-size:20px !important;line-height:130% !important; }#ut_custom_heading69f3030673ccb { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading69f3030673ccb { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading69f3030673ccb { text-align:center; } }<\/style><h3 id=\"ut_custom_heading69f3030673ccb\" data-responsive-font=\"h3\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;20&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;130&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;}\" class=\"ut-custom-heading-module   vc_custom_1739286393713\" ><span class=\"\" >Restoration of xxx<\/span><\/h3><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_header_69f30306743c9 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_69f30306743c9\" class=\"section-header  ut-no-title-linebreak-mobile ut-no-lead-linebreak-mobile pt-style-7 header-left header-tablet-left header-mobile-center element-with-custom-line-height\"><div class=\"element-with-custom-line-height\" ><h2 data-title=\"Here we are now\"  data-responsive-font=\"section_title\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;50&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;125&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;,&quot;letter-spacing&quot;:{&quot;desktop_large&quot;:&quot;-0.03&quot;}}\" class=\"section-title  \"><span>Here we are now<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>Fusce augue nibh, rhoncus quis mattis et, aliquam sit amet lorem. Sed neque dui, facilisis et luctus nec, molestie at orci. Suspendisse vel consequat lectus.<\/p>\n<\/div><\/header><\/div><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_pb_69f3030674d54 .ut-skill-name { color: #212326; }#ut_pb_69f3030674d54 .ut-skill-name { margin-bottom: 40px; }#ut_pb_69f3030674d54 .ut-skill-progress-thin { background: #008060; }#ut_pb_69f3030674d54 .ut-skill-tooltip { color: #212326; }<\/style><div id=\"ut_pb_69f3030674d54\" class=\" ut-progress-bar-module-2 ut-progress-bar-percentage-digits-1\"><h3 class=\"ut-skill-name\">This is how many of the project&#039;s eelgrass seedlings have been planted<\/h3><div class=\"ut-skill-bar-thin\"><div class=\"ut-skill-progress-thin ut-skill-active\" data-speed=\"1000\" data-animateonce=\"no\" data-effecttype=\"skillbar\" data-width=\"5\"><span class=\"ut-skill-tooltip\">5%<\/span><\/div><\/div><\/div><\/div><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_pb_69f3030674da6 .ut-skill-name { color: #212326; }#ut_pb_69f3030674da6 .ut-skill-name { margin-bottom: 40px; }#ut_pb_69f3030674da6 .ut-skill-progress-thin { background: #008060; }#ut_pb_69f3030674da6 .ut-skill-tooltip { color: #212326; }<\/style><div id=\"ut_pb_69f3030674da6\" class=\" ut-progress-bar-module-2 ut-progress-bar-percentage-digits-2\"><h3 class=\"ut-skill-name\">This is how much of the project&#039;s artificial reef has been placed<\/h3><div class=\"ut-skill-bar-thin\"><div class=\"ut-skill-progress-thin ut-skill-active\" data-speed=\"1000\" data-animateonce=\"no\" data-effecttype=\"skillbar\" data-width=\"89\"><span class=\"ut-skill-tooltip\">89%<\/span><\/div><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/2&#8243;]<div  class=\"wpb_content_element   clearfix\"><style type=\"text\/css\">#ut_am_69f3030675711 { opacity: 1; }#ut_am_wrap_69f3030675712 .ut-image-gallery-item-caption-title h3 { letter-spacing: 0em; }#ut_am_wrap_69f3030675712 .ut-gallery-slider-caption { font-weight: bold; }#ut_am_wrap_69f3030675712 { text-align: center; }@media (min-width: 768px) and (max-width: 1024px) { #ut_am_wrap_69f3030675712 { text-align: center !important; 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viewBox%3D&#039;0 0 1500 1000&#039;%2F%3E\" width=\"1500\" height=\"1000\" data-src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/navea_damm-1500x1000.jpg\" data-image-id=\"1381\" class=\"ut-adaptive-image wp-post-image skip-lazy \">\r\n\r\n        \r\n        <img decoding=\"async\" data-adaptive-images=\"{&quot;300&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-300x200.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-500x333.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-750x500.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-1000x667.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-1500x1000.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-2500x1667.jpg&quot;}\" src=\"data:image\/svg+xml;charset=utf-8,%3Csvg xmlns%3D&#039;http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg&#039; viewBox%3D&#039;0 0 1500 1000&#039;%2F%3E\" width=\"1500\" height=\"1000\" data-src=\"https:\/\/improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/faunapassage_1200-1500x1000.jpg\" data-image-id=\"1382\" class=\"ut-adaptive-image wp-post-image skip-lazy \">\r\n\r\n        <\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/12&#8243;][\/vc_column][vc_column width=&#8221;5\/12&#8243; css=&#8221;.vc_custom_1737973500751{background-color: #15526e !important;}&#8221;]<style type=\"text\/css\">#ut_custom_heading69f30306912ed { color:#ffdd40; }#ut_custom_heading69f30306912ed { font-size:20px !important;line-height:130% !important; }#ut_custom_heading69f30306912ed { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading69f30306912ed { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading69f30306912ed { text-align:center; } }<\/style><h3 id=\"ut_custom_heading69f30306912ed\" data-responsive-font=\"h3\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;20&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;130&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;}\" class=\"ut-custom-heading-module   vc_custom_1739346048551\" ><span class=\"\" >Freshwater pearl mussel survival depends on host fish<\/span><\/h3><div class=\"wpb_content_element  vc_custom_1737973593592\"><style type=\"text\/css\">#ut_header_69f3030691c92 h2.section-title, #ut_header_69f3030691c92 h2.section-title span { color:#ffffff; }#ut_header_69f3030691c92 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }#ut_header_69f3030691c92 .lead { color:#ffffff; }#ut_header_69f3030691c92 .lead p { color:#ffffff; }<\/style><header id=\"ut_header_69f3030691c92\" class=\"section-header  ut-no-title-linebreak-mobile ut-no-lead-linebreak-mobile pt-style-7 header-left header-tablet-left header-mobile-center element-with-custom-line-height\"><div class=\"element-with-custom-line-height\" ><h2 data-title=\"Barriers to migration\"  data-responsive-font=\"section_title\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;50&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;125&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;,&quot;letter-spacing&quot;:{&quot;desktop_large&quot;:&quot;-0.03&quot;}}\" class=\"section-title  \"><span>Barriers to migration<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>Removing migration barriers and opening up the river pearl mussel&#8217;s host fish, salmon and trout, will increase the species&#8217; ability to reproduce. Barriers to migration come in many forms, from natural to man-made dams and power plants. In some cases, a good solution may be to build a wildlife passage to allow fish and other organisms to bypass the migration barrier.<\/p>\n<\/div><\/header><\/div>[\/vc_column][\/vc_row][\/vc_section][vc_section el_name=&#8221;Projektnyheter&#8221;][vc_row][vc_column]<style type=\"text\/css\">#ut_custom_heading69f30306926dd { color:#008060; }#ut_custom_heading69f30306926dd { font-size:20px !important;line-height:130% !important; }#ut_custom_heading69f30306926dd { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading69f30306926dd { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading69f30306926dd { text-align:center; } }<\/style><h3 id=\"ut_custom_heading69f30306926dd\" data-responsive-font=\"h3\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;20&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;130&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;}\" class=\"ut-custom-heading-module   vc_custom_1739892292899\" ><span class=\"\" >River Vir\u00e5n<\/span><\/h3><div class=\"wpb_content_element  vc_custom_1739290447216\"><style type=\"text\/css\">#ut_header_69f3030692c25 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_69f3030692c25\" class=\"section-header  ut-no-title-linebreak-mobile ut-no-lead-linebreak-mobile pt-style-7 header-left header-tablet-left header-mobile-center element-with-custom-line-height\"><div class=\"element-with-custom-line-height\" ><h2 data-title=\"Latest news from the project area\"  data-responsive-font=\"section_title\" data-responsive-font-settings=\"{&quot;base-font-size&quot;:&quot;global&quot;,&quot;font-size&quot;:{&quot;desktop_large&quot;:&quot;50&quot;},&quot;base-line-height&quot;:&quot;global&quot;,&quot;line-height&quot;:{&quot;desktop_large&quot;:&quot;125&quot;},&quot;base-letter-spacing&quot;:&quot;global&quot;,&quot;letter-spacing&quot;:{&quot;desktop_large&quot;:&quot;-0.03&quot;}}\" class=\"section-title  \"><span>Latest news from the project area<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>Here you can read news about the target species and the actions being taken in the project area.<\/p>\n<\/div><\/header><\/div>[\/vc_column][vc_column]<style type=\"text\/css\">#ut_blog_grid_69f30306935d7 .ut-blog-grid-article { margin-top: 10px; }<\/style><div id=\"ut_blog_grid_69f30306935d7\" class=\"ut-blog-grid-module blog\"><div class=\"ut-blog-grid  clearfix ut-blog-grid-date-default\"><\/div><\/div><style type=\"text\/css\">#bklyn_btn_69f3030695732 .bklyn-btn { color:#004c3f !important; border-radius:50px !important; background-color:#ffdd40 !important; }#bklyn_btn_69f3030695732 .bklyn-btn:hover{ color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_69f3030695732 .bklyn-btn:focus{ color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_69f3030695732 .bklyn-btn:active { color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_69f3030695732 a.bklyn-btn { font-weight:bold !important; }#bklyn_btn_69f3030695732.bklyn-btn-header a.bklyn-btn { font-weight:bold !important; }#bklyn_btn_69f3030695732.bklyn-btn-header a.bklyn-btn span { font-weight:bold !important; }#bklyn_btn_69f3030695732 a.bklyn-btn { font-family:inherit !important; }<\/style><div id=\"bklyn_btn_69f3030695732\" class=\"bklyn-btn-holder  bklyn-btn-left bklyn-btn-tablet-left bklyn-btn-mobile-center\"><a title=\"What&#039;s new\"   href=\"https:\/\/improveaquaticlife.se\/en\/whats-new\/\" target=\"_self\" class=\"bklyn-btn  bklyn-btn-normal\" ><span class=\"ut-btn-text\">READ MORE NEWS<\/span><\/a><\/div>[\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_section background_position=&#8221;center center&#8221; 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