{"id":1789,"date":"2025-01-22T14:57:55","date_gmt":"2025-01-22T14:57:55","guid":{"rendered":"https:\/\/dev.improveaquaticlife.se\/river-pearl-mussel\/"},"modified":"2025-02-25T13:42:16","modified_gmt":"2025-02-25T13:42:16","slug":"river-pearl-mussel","status":"publish","type":"page","link":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/","title":{"rendered":"River pearl mussel"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_section background_position=&#8221;center center&#8221; css=&#8221;.vc_custom_1737626608560{background-image: url(https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/flodparlmussla_1958.jpg?id=1338) !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_6aaf1936513d2 h1.page-title, #ut_header_6aaf1936513d2 h1.page-title span { color:#ffffff; }#ut_header_6aaf1936513d2 h1.page-title { font-size:60px !important;line-height:125% !important;letter-spacing:-0.03em; }#ut_header_6aaf1936513d2.page-title-module .lead { color:#ffffff; }#ut_header_6aaf1936513d2.page-title-module .lead p { color:#ffffff; }<\/style><header id=\"ut_header_6aaf1936513d2\" 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 pearl mussel\"  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 pearl mussel<\/span><\/h1><\/div><\/header><\/div>[\/vc_column][\/vc_row][\/vc_section][vc_section css=&#8221;.vc_custom_1737972072372{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_6aaf193656ca7 { opacity: 1; }#ut_am_wrap_6aaf193656ca8 .ut-image-gallery-item-caption-title h3 { letter-spacing: 0em; }#ut_am_wrap_6aaf193656ca8 .ut-gallery-slider-caption { font-weight: bold; }#ut_am_wrap_6aaf193656ca8 { text-align: center; }@media (min-width: 768px) and (max-width: 1024px) { #ut_am_wrap_6aaf193656ca8 { text-align: center !important; } }@media (max-width: 767px) { #ut_am_wrap_6aaf193656ca8 { text-align: center !important; } }<\/style><div id=\"ut_am_wrap_6aaf193656ca8\" class=\"ut-image-gallery-image \"><div id=\"ut_reveal_6aaf193656ca9\"  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_6aaf193656ca7\" 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:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/flodparlmussla_kikare_1958.jpg\" width=\"1958\" height=\"1224\" alt=\"On the lookout for river pearl mussels.\nPhoto: Mathias Arnham\"\/><\/div><\/a><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;1\/12&#8243;][\/vc_column][vc_column width=&#8221;5\/12&#8243;]<style type=\"text\/css\">#ut_custom_heading6aaf193656d58 { color:#008060; }#ut_custom_heading6aaf193656d58 { font-size:20px !important;line-height:130% !important; }#ut_custom_heading6aaf193656d58 { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading6aaf193656d58 { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading6aaf193656d58 { text-align:center; } }<\/style><h3 id=\"ut_custom_heading6aaf193656d58\" 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_1737626895066\" ><span class=\"\" >Ecosystem water purifier<\/span><\/h3><div class=\"wpb_content_element  vc_custom_1740490711695\"><style type=\"text\/css\">#ut_header_6aaf19365727f h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_6aaf19365727f\" 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=\"A long-lived freshwater mussel\"  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>A long-lived freshwater mussel<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>The river pearl mussel<i>(Margaritifera margaritifera<\/i>) is a long-lived freshwater mussel that can grow up to 16 cm in length and live for over 200 years in favorable conditions. It is found in flowing streams with gravel and rocky bottoms, and its survival is strongly linked to the presence of host fish such as salmon and trout. <\/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;280&#8243; desccolor=&#8221;#008060&#8243; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-blind&#8221; color=&#8221;#ffd20a&#8221;]May reach an age of[\/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;600&#8243; desccolor=&#8221;#008060&#8243; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-braille&#8221;]Found in this many Swedish waterways[\/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;16&#8243; desccolor=&#8221;#008060&#8243; icon=&#8221;fa-solid fa-arrows-alt-h&#8221; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221;]Can be this many centimeters long[\/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;1994&#8243; desccolor=&#8221;#008060&#8243; color=&#8221;#ffd20a&#8221; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-exclamation-triangle&#8221;]Protected since year  [\/ut_number_counter][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<p style=\"font-weight: 400;\">The river pearl mussel has a complex life cycle that includes a life stage in which they live as parasites on host fish as they attach to the gills of the fish as glochidial larvae to develop into small mussels. Only a small proportion of the larvae survive to adulthood, but this is compensated for by the species&#8217; high fecundity and long lifespan. The species requires oxygen-rich and nutrient-poor water with stable pH conditions to reproduce.  <\/p>\n<p style=\"font-weight: 400;\"><strong>Has disappeared from many waters<\/strong><br \/>\nIn Sweden, the pearl mussel has disappeared from a third of its former habitats since the 20th century. Today, it is found in around 600 watercourses in the country. Local populations can range from a few individuals to millions of mussels. The species relies on trout and salmon as host fish and they also enable dispersal and genetic exchange between different mussel populations.   <\/p>\n<p><strong>Threats to the species<\/strong><br \/>\nThe survival of the species is threatened by factors such as siltation, seabed destruction, acidification, hydropower development and pollution. Modern forestry and agriculture often have a negative impact by increasing sedimentation and degrading water quality. Invasive species such as signal crayfish and muskellunge can also negatively affect mussels through predation.  <\/p>\n<blockquote>\n<p style=\"font-weight: 400;\">The river pearl mussel needs salmon or trout to reproduce.<\/p>\n<\/blockquote>\n<p style=\"font-weight: 400;\"><strong>Measures to strengthen stocks<\/strong><br \/>\nThe pearl mussel is fully protected under Swedish law and is protected under the EU Habitats Directive. To strengthen the populations that exist today, comprehensive measures need to be implemented. This includes preserving and restoring their habitats, but also the habitats and distribution of their host fish by removing migration barriers.  <\/p>\n<p style=\"font-weight: 400;\"><strong>Host fish to help<\/strong><br \/>\nThe river pearl mussel also acts as an environmental indicator and can store information on water quality in its shells. The species is of great scientific and ecological value, but extensive efforts are needed to conserve and restore functioning populations. One way is to catch host fish and put them in tubs with pregnant mussels to help more larvae attach to their gills. They are then released back into the watercourse where the larvae can grow into small mussels that drop and burrow into the bottom. After a few years, they have developed into adult mussels and can contribute to reproduction.    <\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section][vc_section el_name=&#8221;Projektf\u00f6rfarande&#8221;][vc_row][vc_column width=&#8221;1\/2&#8243;]<style type=\"text\/css\">#ut_custom_heading6aaf193657bfa { color:#008060; }#ut_custom_heading6aaf193657bfa { font-size:20px !important;line-height:130% !important; }#ut_custom_heading6aaf193657bfa { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading6aaf193657bfa { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading6aaf193657bfa { text-align:center; } }<\/style><h3 id=\"ut_custom_heading6aaf193657bfa\" 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_1737546204538\" ><span class=\"\" >Environmental management<\/span><\/h3><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_header_6aaf193658228 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_6aaf193658228\" 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=\"Restoration of water bodies\"  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>Restoration of water bodies<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>During the project period, &#8230;<\/p>\n<\/div><\/header><\/div><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_pb_6aaf193658acc .ut-skill-name { color: #212326; }#ut_pb_6aaf193658acc .ut-skill-name { margin-bottom: 40px; }#ut_pb_6aaf193658acc .ut-skill-progress-thin { background: #008060; }#ut_pb_6aaf193658acc .ut-skill-tooltip { color: #212326; }<\/style><div id=\"ut_pb_6aaf193658acc\" class=\" ut-progress-bar-module-2 ut-progress-bar-percentage-digits-2\"><h3 class=\"ut-skill-name\">Disappeared from this many Swedish waters (%)<\/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=\"33\"><span class=\"ut-skill-tooltip\">33%<\/span><\/div><\/div><\/div><\/div><div class=\"wpb_content_element \"><style type=\"text\/css\">#ut_pb_6aaf193658b23 .ut-skill-name { color: #212326; }#ut_pb_6aaf193658b23 .ut-skill-name { margin-bottom: 40px; }#ut_pb_6aaf193658b23 .ut-skill-progress-thin { background: #008060; }#ut_pb_6aaf193658b23 .ut-skill-tooltip { color: #212326; }<\/style><div id=\"ut_pb_6aaf193658b23\" class=\" ut-progress-bar-module-2 ut-progress-bar-percentage-digits-2\"><h3 class=\"ut-skill-name\">Rejuvenation only takes place in this many watercourses where it remains (%)<\/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=\"33\"><span class=\"ut-skill-tooltip\">33%<\/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_6aaf1936592da { opacity: 1; }#ut_am_wrap_6aaf1936592db .ut-image-gallery-item-caption-title h3 { letter-spacing: 0em; }#ut_am_wrap_6aaf1936592db .ut-gallery-slider-caption { font-weight: bold; }#ut_am_wrap_6aaf1936592db { text-align: center; }@media (min-width: 768px) and (max-width: 1024px) { #ut_am_wrap_6aaf1936592db { text-align: center !important; } }@media (max-width: 767px) { #ut_am_wrap_6aaf1936592db { text-align: center !important; } }<\/style><div id=\"ut_am_wrap_6aaf1936592db\" class=\"ut-image-gallery-image \"><div id=\"ut_reveal_6aaf1936592dc\"  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_6aaf1936592da\" 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:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/flodparlmussla_mata_1958.jpg\" width=\"1958\" height=\"1224\" alt=\"\"\/><\/div><\/a><\/div><\/div><\/div>[\/vc_column][\/vc_row][\/vc_section][vc_section background_position=&#8221;center bottom&#8221; css=&#8221;.vc_custom_1737973344880{background-image: url(https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/bubbles-230014.webp?id=1417) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_name=&#8221;F\u00f6re och efter&#8221;][vc_row][vc_column width=&#8221;1\/2&#8243;]<div class=\"wpb_content_element \">\r\n\t\t\t<style type=\"text\/css\">\r\n\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-before-label::before,\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-after-label::before {\r\n                    color: #004c3f                }\r\n\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-before-label::before,\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-after-label::before {\r\n                    background: #ffdd40                }\r\n\r\n\t\t\t\t\r\n                \r\n\t\t\t\t\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle {\r\n                    border-color: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle .ut-comparison-right-arrow {\r\n                    border-left-color: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle .ut-comparison-left-arrow {\r\n                    border-right-color: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle .ut-comparison-down-arrow {\r\n                    border-top-color: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle .ut-comparison-up-arrow {\r\n                    border-bottom-color: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle::after,\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle::before {\r\n                    -webkit-box-shadow: 0 -3px 0 #ffdd40, 0px 0px 12px rgba(51, 51, 51, 0.5);\r\n                    -moz-box-shadow: 0 -3px 0 #ffdd40, 0px 0px 12px rgba(51, 51, 51, 0.5);\r\n                    box-shadow: 0 -3px 0 #ffdd40, 0px 0px 12px rgba(51, 51, 51, 0.5);\r\n                }\r\n\r\n\t\t\t\t\r\n                \r\n                \r\n\t\t\t\t\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle::after,\r\n\t\t\t\t#ut_cs_6aaf193659383 .ut-comparison-handle::before {\r\n                    background: #ffdd40;\r\n                }\r\n\r\n\t\t\t\t\r\n\t\t\t<\/style>\r\n\r\n\t\t\t<div id=\"ut_cs_6aaf193659383\" class=\"ut-comparison-container \" data-default-offset-pct=\"0.5\" data-orientation=\"horizontal\" data-move-slider-on-hover=\"\" data-before-label=\"Vandringshinder\" data-after-label=\"Faunapassage\">\r\n        <img decoding=\"async\" data-adaptive-images=\"{&quot;300&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-300x200.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-500x333.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-750x500.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-1000x667.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-1500x1000.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/navea_damm-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:\/\/dev.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:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-300x200.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-500x333.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-750x500.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-1000x667.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/faunapassage_1200-1500x1000.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/dev.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:\/\/dev.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_heading6aaf193674205 { color:#ffdd40; }#ut_custom_heading6aaf193674205 { font-size:20px !important;line-height:130% !important; }#ut_custom_heading6aaf193674205 { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading6aaf193674205 { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading6aaf193674205 { text-align:center; } }<\/style><h3 id=\"ut_custom_heading6aaf193674205\" 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_1737973618896\" ><span class=\"\" >Open up to the fish<\/span><\/h3><div class=\"wpb_content_element  vc_custom_1737973593592\"><style type=\"text\/css\">#ut_header_6aaf193674b90 h2.section-title, #ut_header_6aaf193674b90 h2.section-title span { color:#ffffff; }#ut_header_6aaf193674b90 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }#ut_header_6aaf193674b90 .lead { color:#ffffff; }#ut_header_6aaf193674b90 .lead p { color:#ffffff; }<\/style><header id=\"ut_header_6aaf193674b90\" 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_heading6aaf1936754de { color:#008060; }#ut_custom_heading6aaf1936754de { font-size:20px !important;line-height:130% !important; }#ut_custom_heading6aaf1936754de { text-align:left; }@media (min-width: 768px) and (max-width: 1024px) { #ut_custom_heading6aaf1936754de { text-align:left; } }@media (max-width: 767px) { #ut_custom_heading6aaf1936754de { text-align:center; } }<\/style><h3 id=\"ut_custom_heading6aaf1936754de\" 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_1737628740771\" ><span class=\"\" >Project news coverage<\/span><\/h3><div class=\"wpb_content_element  vc_custom_1737629008687\"><style type=\"text\/css\">#ut_header_6aaf193675985 h2.section-title { font-size:50px !important;line-height:125% !important;letter-spacing:-0.03em; }<\/style><header id=\"ut_header_6aaf193675985\" 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=\"Read about the project&#039;s work on the river pearl mussel\"  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>Read about the project&#039;s work on the river pearl mussel<\/span><\/h2><\/div><div data-delay=\"0\" class=\"lead \"><p>During the project periods, several actions will be taken to improve the habitats of the river pearl mussel. Below are the three latest news items focusing on the pearl mussel.<\/p>\n<\/div><\/header><\/div>[\/vc_column][vc_column]<style type=\"text\/css\">#ut_blog_grid_6aaf193676277 .ut-blog-grid-article { margin-top: 10px; }<\/style><div id=\"ut_blog_grid_6aaf193676277\" class=\"ut-blog-grid-module blog\"><div class=\"ut-blog-grid  clearfix ut-blog-grid-date-default\">\r\n<article id=\"post-3456\" class=\"grid-33 tablet-grid-50 mobile-grid-100 ut-blog-grid-article clearfix post-3456 post type-post status-publish format-standard has-post-thumbnail hentry category-latest-news category-river-atran category-river-pearl-mussel category-salmon category-sea-lamprey category-trout\">\r\n    \r\n    <div class=\"ut-blog-grid-article-inner\">\r\n    \t\r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta entry-meta-top  clearfix\">\r\n\r\n\t\t\t\t\t\t\t\t<span class=\"ut-sticky\"><i class=\"fa fa-thumb-tack\"><\/i><\/span>\r\n\t\t\t\t<span class=\"cat-links\"><i class=\"fa fa-folder-open-o\"><\/i><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/latest-news\/\" data-rel=\"category tag\">Latest news<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/river-atran\/\" data-rel=\"category tag\">River \u00c4tran<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/river-pearl-mussel\/\" data-rel=\"category tag\">River pearl mussel<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/salmon\/\" data-rel=\"category tag\">Salmon<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/sea-lamprey\/\" data-rel=\"category tag\">Sea lamprey<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/trout\/\" data-rel=\"category tag\">Trout<\/a><\/span>\r\n\r\n\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t<!-- close entry-meta -->    \r\n\r\n\t\t\t\t\r\n                        \r\n\r\n        <!-- ut-post-thumbnail -->\r\n        <div class=\"ut-post-thumbnail\">     \r\n\r\n            <div class=\"entry-thumbnail\">\r\n\r\n                \r\n                <a title=\"Permanent Link to Restored stream at Okome mill\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/03\/31\/restored-stream-at-okome-mill\/\">                \r\n                    \r\n                    <figure class=\"ut-post-thumbnail-caption-wrap\">\r\n\r\n                        \r\n        <img decoding=\"async\" data-adaptive-images=\"{&quot;300&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-300x250.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-500x417.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-750x625.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-1000x833.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-1500x1250.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/20250326135104_0028_-1900x1188-1-2500x2083.jpg&quot;}\" alt=\"Fina lekbottnar som tidigare varit ind\u00e4mnda. Foto: Ebbe Berglund\" 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 1250&#039;%2F%3E\" width=\"1500\" height=\"1250\" data-src=\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/03\/20250326135104_0028_-1900x1188-1-1500x1250.jpg\" data-image-id=\"3447\" class=\"ut-adaptive-image wp-post-image skip-lazy \">\r\n\r\n        \r\n                        \r\n                            <figcaption class=\"ut-post-thumbnail-caption\">Fina lekbottnar som tidigare varit ind\u00e4mnda. Foto: Ebbe Berglund<\/figcaption>\r\n\r\n                        \r\n                    <\/figure>\r\n                    \r\n                <\/a>  \r\n                \r\n                <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/03\/\">\r\n                \r\n                    <div class=\"date-format\">\r\n                        <span class=\"day\">31<\/span>\r\n                        <span class=\"month\">Mar 2025<\/span>\r\n                    <\/div>\r\n                \r\n                <\/a>\r\n\r\n            <\/div>                                                                                                                         \r\n\r\n        <\/div><!-- close ut-post-thumbnail -->\r\n\r\n                \r\n                \r\n        <a class=\"ut-blog-link\" title=\"Restored stream at Okome mill\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/03\/31\/restored-stream-at-okome-mill\/\" rel=\"bookmark\">     \r\n              \r\n            <div class=\"ut-blog-grid-content-wrap\"> \r\n\r\n                \r\n                    <header class=\"entry-header\">\r\n\r\n                        <h2 data-responsive-font=\"grid_blog_title\" class=\"entry-title\">Restored stream at Okome mill<\/h2>\r\n\r\n                    <\/header>\r\n                    <!-- close entry-header -->\r\n\r\n                 \r\n\r\n                <!-- entry-content -->\r\n                <div class=\"entry-content clearfix\">\r\n\r\n                    <p>The dam and the migration barrier at Okome Mill in Stock\u00e5n, a tributary of H\u00f6gvads\u00e5n, is about to disappear. The&hellip;<\/p>\n\r\n                <\/div>\r\n                <!-- entry-content -->\r\n\r\n            <\/div>\r\n        \r\n        <\/a>\r\n        \r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta clearfix\">\r\n\r\n                <span class=\"author-links\"><img alt='Avatar photo' src='https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/cropped-ebbe_profilbild-30x30.jpg' srcset='https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/cropped-ebbe_profilbild-60x60.jpg 2x' class='avatar avatar-30 photo round' height='30' width='30' \/><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/author\/ebbe-berglund\/\" rel=\"author\">Ebbe Berglund<\/a><\/span>\r\n\r\n\t\t\t\t       \r\n\r\n\t\t\t<\/div>\r\n\t\t\r\n\t\t                        \r\n    <\/div>\r\n    \r\n<\/article>\r\n<!-- #post-3456 -->\r\n\r\n<article id=\"post-1801\" class=\"grid-33 tablet-grid-50 mobile-grid-100 ut-blog-grid-article clearfix post-1801 post type-post status-publish format-standard has-post-thumbnail hentry category-latest-news category-river-pearl-mussel\">\r\n    \r\n    <div class=\"ut-blog-grid-article-inner\">\r\n    \t\r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta entry-meta-top  clearfix\">\r\n\r\n\t\t\t\t\t\t\t\t<span class=\"ut-sticky\"><i class=\"fa fa-thumb-tack\"><\/i><\/span>\r\n\t\t\t\t<span class=\"cat-links\"><i class=\"fa fa-folder-open-o\"><\/i><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/latest-news\/\" data-rel=\"category tag\">Latest news<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/river-pearl-mussel\/\" data-rel=\"category tag\">River pearl mussel<\/a><\/span>\r\n\r\n\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t<!-- close entry-meta -->    \r\n\r\n\t\t\t\t\r\n                        \r\n\r\n        <!-- ut-post-thumbnail -->\r\n        <div class=\"ut-post-thumbnail\">     \r\n\r\n            <div class=\"entry-thumbnail\">\r\n\r\n                \r\n                <a title=\"Permanent Link to L\u00e4rje\u00e5n&#8217;s river pearl mussels get a boost\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/29\/larjeans-river-pearl-mussels-get-a-boost\/\">                \r\n                    \r\n                    <figure class=\"ut-post-thumbnail-caption-wrap\">\r\n\r\n                        \r\n        <img decoding=\"async\" data-adaptive-images=\"{&quot;300&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-300x250.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-500x417.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-750x625.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-1000x833.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-1500x1250.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/flodparlmussla_1958-2500x2083.jpg&quot;}\" alt=\"Flodp\u00e4rlmusslan kan rena upp till 40 liter vatten varje dag.\" 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 1250&#039;%2F%3E\" width=\"1500\" height=\"1250\" data-src=\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/flodparlmussla_1958-1500x1250.jpg\" data-image-id=\"1338\" class=\"ut-adaptive-image wp-post-image skip-lazy \">\r\n\r\n        \r\n                        \r\n                            <figcaption class=\"ut-post-thumbnail-caption\">Flodp\u00e4rlmusslan kan rena upp till 40 liter vatten varje dag. Foto: Niklas Wengstr\u00f6m.<\/figcaption>\r\n\r\n                        \r\n                    <\/figure>\r\n                    \r\n                <\/a>  \r\n                \r\n                <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/\">\r\n                \r\n                    <div class=\"date-format\">\r\n                        <span class=\"day\">29<\/span>\r\n                        <span class=\"month\">Jan 2025<\/span>\r\n                    <\/div>\r\n                \r\n                <\/a>\r\n\r\n            <\/div>                                                                                                                         \r\n\r\n        <\/div><!-- close ut-post-thumbnail -->\r\n\r\n                \r\n                \r\n        <a class=\"ut-blog-link\" title=\"L\u00e4rje\u00e5n&#8217;s river pearl mussels get a boost\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/29\/larjeans-river-pearl-mussels-get-a-boost\/\" rel=\"bookmark\">     \r\n              \r\n            <div class=\"ut-blog-grid-content-wrap\"> \r\n\r\n                \r\n                    <header class=\"entry-header\">\r\n\r\n                        <h2 data-responsive-font=\"grid_blog_title\" class=\"entry-title\">L\u00e4rje\u00e5n&#8217;s river pearl mussels get a boost<\/h2>\r\n\r\n                    <\/header>\r\n                    <!-- close entry-header -->\r\n\r\n                 \r\n\r\n                <!-- entry-content -->\r\n                <div class=\"entry-content clearfix\">\r\n\r\n                    <p>In L\u00e4rje\u00e5n, wildlife passages and restorations will improve the status of the threatened river pearl mussel, migrating salmon and other&hellip;<\/p>\n\r\n                <\/div>\r\n                <!-- entry-content -->\r\n\r\n            <\/div>\r\n        \r\n        <\/a>\r\n        \r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta clearfix\">\r\n\r\n                <span class=\"author-links\"><img alt='' src='https:\/\/dev.improveaquaticlife.se\/wp-content\/litespeed\/avatar\/c6f76664a5d7a0105db5a4d4bb388767.jpg?ver=1789674316' srcset='https:\/\/dev.improveaquaticlife.se\/wp-content\/litespeed\/avatar\/189aca61f630bafc6c88ad5622cdea86.jpg?ver=1789674316 2x' class='avatar avatar-30 photo round' height='30' width='30' \/><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/author\/nicka-hellenberg\/\" rel=\"author\">Nicka Hellenberg<\/a><\/span>\r\n\r\n\t\t\t\t       \r\n\r\n\t\t\t<\/div>\r\n\t\t\r\n\t\t                        \r\n    <\/div>\r\n    \r\n<\/article>\r\n<!-- #post-1801 -->\r\n\r\n<article id=\"post-1797\" class=\"grid-33 tablet-grid-50 mobile-grid-100 ut-blog-grid-article clearfix post-1797 post type-post status-publish format-standard has-post-thumbnail hentry category-latest-news category-river-pearl-mussel category-salmon category-sea-lamprey category-thick-shelled-river-mussel\">\r\n    \r\n    <div class=\"ut-blog-grid-article-inner\">\r\n    \t\r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta entry-meta-top  clearfix\">\r\n\r\n\t\t\t\t\t\t\t\t<span class=\"ut-sticky\"><i class=\"fa fa-thumb-tack\"><\/i><\/span>\r\n\t\t\t\t<span class=\"cat-links\"><i class=\"fa fa-folder-open-o\"><\/i><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/latest-news\/\" data-rel=\"category tag\">Latest news<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/river-pearl-mussel\/\" data-rel=\"category tag\">River pearl mussel<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/salmon\/\" data-rel=\"category tag\">Salmon<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/sea-lamprey\/\" data-rel=\"category tag\">Sea lamprey<\/a>, <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/category\/thick-shelled-river-mussel\/\" data-rel=\"category tag\">Thick shelled river mussel<\/a><\/span>\r\n\r\n\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t<!-- close entry-meta -->    \r\n\r\n\t\t\t\t\r\n                        \r\n\r\n        <!-- ut-post-thumbnail -->\r\n        <div class=\"ut-post-thumbnail\">     \r\n\r\n            <div class=\"entry-thumbnail\">\r\n\r\n                \r\n                <a title=\"Permanent Link to Europe&#8217;s largest water conservation project\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/09\/europes-largest-water-conservation-project\/\">                \r\n                    \r\n                    <figure class=\"ut-post-thumbnail-caption-wrap\">\r\n\r\n                        \r\n        <img decoding=\"async\" data-adaptive-images=\"{&quot;300&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-300x250.jpg&quot;,&quot;500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-500x417.jpg&quot;,&quot;750&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-750x625.jpg&quot;,&quot;1000&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-1000x833.jpg&quot;,&quot;1500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-1500x1250.jpg&quot;,&quot;2500&quot;:&quot;https:\\\/\\\/dev.improveaquaticlife.se\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/improve_nyhet_-2500x2083.jpg&quot;}\" alt=\"M\u00e5larterna i projektet \u00e4r bland annat flodp\u00e4rlmussla och lax. Foto Nicka Hellenberg.\" 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 1250&#039;%2F%3E\" width=\"1500\" height=\"1250\" data-src=\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/improve_nyhet_-1500x1250.jpg\" data-image-id=\"1052\" class=\"ut-adaptive-image wp-post-image skip-lazy \">\r\n\r\n        \r\n                        \r\n                            <figcaption class=\"ut-post-thumbnail-caption\">M\u00e5larterna i projektet \u00e4r bland annat flodp\u00e4rlmussla och lax. Foto Nicka Hellenberg.<\/figcaption>\r\n\r\n                        \r\n                    <\/figure>\r\n                    \r\n                <\/a>  \r\n                \r\n                <a href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/\">\r\n                \r\n                    <div class=\"date-format\">\r\n                        <span class=\"day\">09<\/span>\r\n                        <span class=\"month\">Jan 2025<\/span>\r\n                    <\/div>\r\n                \r\n                <\/a>\r\n\r\n            <\/div>                                                                                                                         \r\n\r\n        <\/div><!-- close ut-post-thumbnail -->\r\n\r\n                \r\n                \r\n        <a class=\"ut-blog-link\" title=\"Europe&#8217;s largest water conservation project\" href=\"https:\/\/dev.improveaquaticlife.se\/en\/2025\/01\/09\/europes-largest-water-conservation-project\/\" rel=\"bookmark\">     \r\n              \r\n            <div class=\"ut-blog-grid-content-wrap\"> \r\n\r\n                \r\n                    <header class=\"entry-header\">\r\n\r\n                        <h2 data-responsive-font=\"grid_blog_title\" class=\"entry-title\">Europe&#8217;s largest water conservation project<\/h2>\r\n\r\n                    <\/header>\r\n                    <!-- close entry-header -->\r\n\r\n                 \r\n\r\n                <!-- entry-content -->\r\n                <div class=\"entry-content clearfix\">\r\n\r\n                    <p>Improve Aquatic LIFE is the name of one of Europe's largest water conservation projects to restore aquatic environments and carry&hellip;<\/p>\n\r\n                <\/div>\r\n                <!-- entry-content -->\r\n\r\n            <\/div>\r\n        \r\n        <\/a>\r\n        \r\n\t\t\t\t\r\n\t\t\t<div class=\"entry-meta clearfix\">\r\n\r\n                <span class=\"author-links\"><img alt='' src='https:\/\/dev.improveaquaticlife.se\/wp-content\/litespeed\/avatar\/ac132aef6459615c1ac9f61f4a1c578b.jpg?ver=1789373388' srcset='https:\/\/dev.improveaquaticlife.se\/wp-content\/litespeed\/avatar\/7cab93eb95f100f3e666e8b0c60a5c9c.jpg?ver=1789373388 2x' class='avatar avatar-30 photo round' height='30' width='30' \/><a href=\"https:\/\/dev.improveaquaticlife.se\/en\/author\/admin\/\" rel=\"author\">Mathias Arnham<\/a><\/span>\r\n\r\n\t\t\t\t       \r\n\r\n\t\t\t<\/div>\r\n\t\t\r\n\t\t                        \r\n    <\/div>\r\n    \r\n<\/article>\r\n<!-- #post-1797 -->\r\n<\/div><\/div><style type=\"text\/css\">#bklyn_btn_6aaf1936b0b72 .bklyn-btn { color:#004c3f !important; border-radius:50px !important; background-color:#ffdd40 !important; }#bklyn_btn_6aaf1936b0b72 .bklyn-btn:hover{ color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_6aaf1936b0b72 .bklyn-btn:focus{ color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_6aaf1936b0b72 .bklyn-btn:active { color:#004c3f !important; background-color:#ffd61f !important; }#bklyn_btn_6aaf1936b0b72 a.bklyn-btn { font-weight:bold !important; }#bklyn_btn_6aaf1936b0b72.bklyn-btn-header a.bklyn-btn { font-weight:bold !important; }#bklyn_btn_6aaf1936b0b72.bklyn-btn-header a.bklyn-btn span { font-weight:bold !important; }#bklyn_btn_6aaf1936b0b72 a.bklyn-btn { font-family:inherit !important; }<\/style><div id=\"bklyn_btn_6aaf1936b0b72\" class=\"bklyn-btn-holder  bklyn-btn-left bklyn-btn-tablet-left bklyn-btn-mobile-center\"><a title=\"What&#039;s new\"   href=\"https:\/\/dev.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; css=&#8221;.vc_custom_1737626608560{background-image: url(https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/flodparlmussla_1958.jpg?id=1338) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_name=&#8221;Sidhuvud&#8221;][vc_row][vc_column][\/vc_column][\/vc_row][\/vc_section][vc_section css=&#8221;.vc_custom_1737972072372{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;][\/vc_column][vc_column width=&#8221;1\/12&#8243;][\/vc_column][vc_column width=&#8221;5\/12&#8243;][\/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;280&#8243; desccolor=&#8221;#008060&#8243; counter_color=&#8221;#004c3f&#8221; icon=&#8221;fa-solid fa-blind&#8221; color=&#8221;#ffd20a&#8221;]May reach an age of[\/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;600&#8243; desccolor=&#8221;#008060&#8243; [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1789","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.8 (Yoast SEO v24.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>River pearl mussel: ecosystem water purifier - Utveckling Improve Aquatic LIFE<\/title>\n<meta name=\"description\" content=\"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"River pearl mussel\" \/>\n<meta property=\"og:description\" content=\"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/\" \/>\n<meta property=\"og:site_name\" content=\"Utveckling Improve Aquatic LIFE\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-25T13:42:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/webbplatsbild_1200px.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/\",\"url\":\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/\",\"name\":\"River pearl mussel: ecosystem water purifier - Utveckling Improve Aquatic LIFE\",\"isPartOf\":{\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/#website\"},\"datePublished\":\"2025-01-22T14:57:55+00:00\",\"dateModified\":\"2025-02-25T13:42:16+00:00\",\"description\":\"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.\",\"breadcrumb\":{\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Hem\",\"item\":\"https:\/\/dev.improveaquaticlife.se\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"River pearl mussel\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/#website\",\"url\":\"https:\/\/dev.improveaquaticlife.se\/en\/\",\"name\":\"Improve Aquatic Life\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/dev.improveaquaticlife.se\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/#organization\",\"name\":\"Improve Aquatic Life\",\"url\":\"https:\/\/dev.improveaquaticlife.se\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/dev.improveaquaticlife.se\/en\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png\",\"contentUrl\":\"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png\",\"width\":388,\"height\":120,\"caption\":\"Improve Aquatic Life\"},\"image\":{\"@id\":\"https:\/\/dev.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\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"River pearl mussel: ecosystem water purifier - Utveckling Improve Aquatic LIFE","description":"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.","robots":{"index":"noindex","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"River pearl mussel","og_description":"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.","og_url":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/","og_site_name":"Utveckling Improve Aquatic LIFE","article_modified_time":"2025-02-25T13:42:16+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/webbplatsbild_1200px.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/","url":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/","name":"River pearl mussel: ecosystem water purifier - Utveckling Improve Aquatic LIFE","isPartOf":{"@id":"https:\/\/dev.improveaquaticlife.se\/en\/#website"},"datePublished":"2025-01-22T14:57:55+00:00","dateModified":"2025-02-25T13:42:16+00:00","description":"The pearl mussel is a long-lived freshwater mussel that lives for over 200 years. Discover its importance to the ecosystem.","breadcrumb":{"@id":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/dev.improveaquaticlife.se\/en\/river-pearl-mussel\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Hem","item":"https:\/\/dev.improveaquaticlife.se\/en\/"},{"@type":"ListItem","position":2,"name":"River pearl mussel"}]},{"@type":"WebSite","@id":"https:\/\/dev.improveaquaticlife.se\/en\/#website","url":"https:\/\/dev.improveaquaticlife.se\/en\/","name":"Improve Aquatic Life","description":"","publisher":{"@id":"https:\/\/dev.improveaquaticlife.se\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dev.improveaquaticlife.se\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/dev.improveaquaticlife.se\/en\/#organization","name":"Improve Aquatic Life","url":"https:\/\/dev.improveaquaticlife.se\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/dev.improveaquaticlife.se\/en\/#\/schema\/logo\/image\/","url":"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png","contentUrl":"https:\/\/dev.improveaquaticlife.se\/wp-content\/uploads\/2025\/01\/new_logo_improve_120.png","width":388,"height":120,"caption":"Improve Aquatic Life"},"image":{"@id":"https:\/\/dev.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"}]}},"_links":{"self":[{"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/pages\/1789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/comments?post=1789"}],"version-history":[{"count":19,"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/pages\/1789\/revisions"}],"predecessor-version":[{"id":3376,"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/pages\/1789\/revisions\/3376"}],"wp:attachment":[{"href":"https:\/\/dev.improveaquaticlife.se\/en\/wp-json\/wp\/v2\/media?parent=1789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}