{"id":10306,"date":"2021-02-25T09:55:51","date_gmt":"2021-02-25T08:55:51","guid":{"rendered":"https:\/\/www.iucn.nl\/?page_id=10306"},"modified":"2025-10-07T15:35:06","modified_gmt":"2025-10-07T14:35:06","slug":"red-list-of-threatened-species","status":"publish","type":"page","link":"https:\/\/www.iucn.nl\/en\/our-work\/red-list-of-threatened-species\/","title":{"rendered":"Red List of Threatened Species"},"content":{"rendered":"<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p class=\"has-cyan-bluish-gray-color has-text-color\"><em>Header photo: Male Dugong and Golden trevally feeding on seagrass beds in Red Sea \u2013 Marsa Alam \u2013 Egypt (c) by cinoby from Getty Images Signature <\/em><\/p>\n<\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">IUCN Red List: a comprehensive source of information<\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>The IUCN Red List constitutes an important source for setting priorities in nature policy worldwide. The list provides detailed information on the conservation status of species, its range, threats, habitat and ecology of species, and conservation measures that can be taken to prevent extinction.<\/p>\n<\/div>\n\n\n<div style=\"height:14px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\"><p class=\"cookiebanner_video_embed\" id=\"2ma362lexf8l91vd\"> In order to view this movie you have to accept &#8216;Social media and advertising&#8217; cookies. Click <a class=\"open-cookie-settings\">here<\/a> to change your cookie settings.  <script>if(!window.dgmCookieVideoBlocks) { window.dgmCookieVideoBlocks=[]; } window.dgmCookieVideoBlocks.push({ content: \"<figure class='wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio'><div class='wp-block-embed__wrapper'><iframe title='The IUCN Red List: A Barometer of Life' width='500' height='281' data-src='https:\/\/www.youtube.com\/embed\/VukyqMajAOU?feature=oembed' frameborder='0' allow='accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share' referrerpolicy='strict-origin-when-cross-origin' allowfullscreen src='data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==' class='lazyload' data-load-mode='1'><\/iframe><\/div><\/figure>\", id: \"2ma362lexf8l91vd\" });<\/script> <\/p><\/div>\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<blockquote class=\"wp-block-quote is-style-default is-layout-flow wp-block-quote-is-layout-flow\"><div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>&#8216;Thanks to the IUCN NL Red List, we know what we should be concerned about and where our attention is urgently needed to prevent the destruction of our planet. It is a fantastic to-do list for the work of nature conservationists.&#8217;<\/p>\n<\/div><cite>Sir David Attenborough<\/cite><\/blockquote>\n<\/div>\n\n\n<div style=\"height:39px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"background background-preset-secondary\" id=\"block_54a2da76c8819c7b1f699d5855fa58cf\">\n             <div class=\"dark custom-padding-top\">\n    \n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">Facts<span class=\"footnote_referrer\"><a role=\"button\" tabindex=\"0\" onclick=\"footnote_moveToReference_10306_1('footnote_plugin_reference_10306_1_1');\" onkeypress=\"footnote_moveToReference_10306_1('footnote_plugin_reference_10306_1_1');\" ><sup id=\"footnote_plugin_tooltip_10306_1_1\" class=\"footnote_plugin_tooltip_text\">[1]<\/sup><\/a><span id=\"footnote_plugin_tooltip_text_10306_1_1\" class=\"footnote_tooltip\">Update 2025-I <a href=\"https:\/\/www.iucn.nl\/en\/news\/first-1000-fungi-on-iucn-red-list-reveal-growing-threats-iucn-red-list\/\"><span class=\"footnote_url_wrap\">https:\/\/www.iucn.nl\/en\/news\/first-1000-fungi-on-iucn-red-list-reveal-growing-threats-iucn-red-list\/<\/span><\/a><\/span><\/span><script type=\"text\/javascript\"> jQuery('#footnote_plugin_tooltip_10306_1_1').tooltip({ tip: '#footnote_plugin_tooltip_text_10306_1_1', tipClass: 'footnote_tooltip', effect: 'fade', predelay: 0, fadeInSpeed: 200, delay: 400, fadeOutSpeed: 200, position: 'top center', relative: true, offset: [-7, 0], });<\/script><\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<ul class=\"wp-block-list\">\n<li><em><strong><strong>47,187<\/strong> <\/strong>species are threatened with extinction.<\/em><\/li>\n\n\n\n<li><em>This is <strong>28%<\/strong> of all <strong>169.420<\/strong> species evaluated by the IUCN.<\/em><\/li>\n<\/ul>\n<\/div>\n\n\n\n    <\/div>\n<\/div>\n\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">Objective assessment system<\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>The list is compiled using an objective system that assesses the risk of a species becoming extinct. The assessment is performed using a standardised process with objective criteria. This guarantees the highest standards of scientific documentation, information management, expert assessment and substantiation.<\/p>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">Red List categories<\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>Following an extensive evaluation of, among other things, the rarity and distribution of the species and population trends, all species are allocated a category that indicates the extent of its risk of extinction. An overview of the categories can be found in the IUCN Red List brochure.<\/p>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.iucn.nl\/app\/uploads\/2021\/03\/red_list-2.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Download IUCN Red List brochure<\/a><\/div>\n<\/div>\n<\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">The Netherlands\u2019 Red Lists<\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>In addition to the international Red List, regional and national Red Lists have also been compiled. They provide information about the status of species per region or country. In the Netherlands, Red Lists have been compiled for 19 groups of species<span class=\"footnote_referrer\"><a role=\"button\" tabindex=\"0\" onclick=\"footnote_moveToReference_10306_1('footnote_plugin_reference_10306_1_2');\" onkeypress=\"footnote_moveToReference_10306_1('footnote_plugin_reference_10306_1_2');\" ><sup id=\"footnote_plugin_tooltip_10306_1_2\" class=\"footnote_plugin_tooltip_text\">[2]<\/sup><\/a><span id=\"footnote_plugin_tooltip_text_10306_1_2\" class=\"footnote_tooltip\">For more information about which species, see: <a href=\"https:\/\/www.clo.nl\/indicatoren\/nl105219-aantal-bedreigde-en-verdwenen-soorten-in-nederland-per-2024\"><span class=\"footnote_url_wrap\">https:\/\/www.clo.nl\/indicatoren\/nl105219-aantal-bedreigde-en-verdwenen-soorten-in-nederland-per-2024<\/span><\/a><\/span><\/span><script type=\"text\/javascript\"> jQuery('#footnote_plugin_tooltip_10306_1_2').tooltip({ tip: '#footnote_plugin_tooltip_text_10306_1_2', tipClass: 'footnote_tooltip', effect: 'fade', predelay: 0, fadeInSpeed: 200, delay: 400, fadeOutSpeed: 200, position: 'top center', relative: true, offset: [-7, 0], });<\/script>. They indicate which species are endangered in the Netherlands. A species that is endangered in the Netherlands is not necessarily endangered on the global or European levels. For the public authorities, which have the Red Lists compiled and officially published, the Red Lists represent an important source for setting priorities in nature policy.<\/p>\n<\/div>\n\n\n<div style=\"height:11px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"background background-preset-primary\" id=\"block_7752efa263e0e7af81d0abe136ee7141\">\n             <div class=\"dark custom-padding-top\">\n    \n\n\n<div class=\" small-12 large-offset-2 large-8\">\n          <h2>Frequently asked questions about the IUCN Red List<\/h2>\n    \n    <span class=\"anchor-id\" id=\"\"><\/span>\n\n    <div class=\"faq-block accordion block small-space-top\">\n                            <ul class=\"accordion\" data-accordion data-allow-all-closed=\"true\">\n                                    <li class=\"accordion-item\" data-accordion-item>\n                        <a href=\"#\" class=\"accordion-title\">How is the IUCN Red List used?<\/a>\n                        <div class=\"accordion-content\" data-tab-content>\n                                                            <div class=\"accordion-content__text\">\n                                    <p>The Red List shows how a species is doing and where action needs to be taken to prevent that species \u2013 the building bricks of nature \u2013 becoming extinct. The IUCN Red List constitutes an important source for setting priorities in nature policy worldwide.<\/p>\n<p>You can find more information about how the Red List is used in the <a href=\"https:\/\/www.iucn.nl\/app\/uploads\/2021\/03\/red_list-2.pdf\" target=\"_blank\" rel=\"noopener\">IUCN Red List brochure<\/a> and on the website <a href=\"http:\/\/www.iucnredlist.org\">www.iucnredlist.org<\/a>.<\/p>\n\n                                <\/div>\n                            \n                            \n                        <\/div>\n                    <\/li>\n                                    <li class=\"accordion-item\" data-accordion-item>\n                        <a href=\"#\" class=\"accordion-title\">What are the causes of species being threatened with extinction?<\/a>\n                        <div class=\"accordion-content\" data-tab-content>\n                                                            <div class=\"accordion-content__text\">\n                                    <p>The disappearance and fragmentation of habitats resulting from human actions &#8211; deforestation and draining marshland for farming, urbanisation and industrial development &#8211; form the greatest threat to animal and plant species. <\/p>\n<p>Besides the loss of habitats, there are other threats, such as overexploitation (overfishing or overly intensive hunting) and pollution. Non-native species introduced by man can also pose a threat. Native species have to compete with these alien species for food and living space, etc. <\/p>\n<p>What\u2019s more, climate change plays an ever greater role. For example, coral is extremely sensitive to just the right temperature. As a result of climate change the sea is heating up, resulting in the death of the coral.<\/p>\n\n                                <\/div>\n                            \n                            \n                        <\/div>\n                    <\/li>\n                                    <li class=\"accordion-item\" data-accordion-item>\n                        <a href=\"#\" class=\"accordion-title\">Where can I find more information about the IUCN Red List?<\/a>\n                        <div class=\"accordion-content\" data-tab-content>\n                                                            <div class=\"accordion-content__text\">\n                                    <p>More information about the IUCN Red List can be found on the website <a href=\"http:\/\/www.iucnredlist.org\" rel=\"noopener\" target=\"_blank\">www.iucnredlist.org<\/a><\/p>\n\n                                <\/div>\n                            \n                            \n                        <\/div>\n                    <\/li>\n                                    <li class=\"accordion-item\" data-accordion-item>\n                        <a href=\"#\" class=\"accordion-title\">Which categories does the IUCN Red List contain?<\/a>\n                        <div class=\"accordion-content\" data-tab-content>\n                                                            <div class=\"accordion-content__text\">\n                                    <p>The IUCN NL Red List distinguishes between the following categories:<br \/>\n&#8211;\tExtinct \u2013 there is no doubt that the very last specimen is dead<br \/>\n&#8211;\tExtinct in the wild \u2013 the only remaining specimens are those bred or kept in captivity<br \/>\n&#8211;\tCritically endangered \u2013 a species at an extremely high risk of extinction<br \/>\n&#8211;\tEndangered \u2013 a species at a very high risk of extinction<br \/>\n&#8211;\tVulnerable \u2013 a species that is deteriorating considerably and runs the risk of extinction<br \/>\n&#8211;\tNear threatened \u2013 numbers of a species are decreasing without the species being directly at risk but there is an increasing risk of them being threatened with extinction<br \/>\n&#8211;\tLeast concern \u2013 a species that is widespread and well represented<br \/>\n&#8211;\tData deficient \u2013 there is not enough data available to assess the status of the species<br \/>\n&#8211;\tNot evaluated \u2013 the species has not been assessed<\/p>\n\n                                <\/div>\n                            \n                            \n                        <\/div>\n                    <\/li>\n                            <\/ul>\n            <\/div>\n<\/div>\n\n\n\n\n    <\/div>\n<\/div>\n\n\n\n\n<div style=\"height:8px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<h2 class=\"wp-block-heading\">IUCN Green Status<\/h2>\n<\/div>\n\n<div class=\"block block-container small-12 large-offset-1 large-10\">\n<p>The <a href=\"https:\/\/www.iucnredlist.org\/about\/green-status-species\">IUCN Green Status of Species<\/a>, launched in 2021, complements the IUCN Red List and provides a tool for assessing species recovery and measuring their conservation success. The status, divided into nine categories, indicates the extent to which a species is on the road to full recovery compared to its historical population level. This is determined on the basis of the criteria of viability, functionality\/role in the ecosystem and distribution range. More than 200 scientists from 171 institutions, including the Butterfly Foundation, have worked on the new tool for 10 years. More than 100 assessments of the IUCN Green Status of Species have now been included in the IUCN Red List.<\/p>\n<\/div>\n\n\n<div style=\"height:9px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"background background-preset-primary\" id=\"block_7752efa263e0e7af81d0abe136ee7141\">\n             <div class=\"dark custom-padding-top\">\n    \n\n\n<div class=\"smallteam-members__name12 large-offset-1 large-10\">\n\t<div id=\"team-members-block_5a76bf8a24d8561d33d109ca955670ea\" class=\"team-members team-members-block block\">\n\t\t<span class=\"anchor-id\" id=\"\"><\/span>\n\n\t\t\t\t\t<h2 class=\"team-members__title\">\n\t\t\t\t<div>Learn more?<\/div>\n\t\t\t<\/h2>\n\t\t\n\t\t<div class=\"team-members__body small-12 grid-x\">\n\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"team-members__item grid-x small-12 medium-6\">\n\n\t\t\t\t\t\t<div class=\"team-members__image cell shrink\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.iucn.nl\/en\/sander-van-andel-senior-expert-nature-conservation\/\" target=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__image-wrapper lazyload\" style=\"background-image:inherit;\" data-bg-image=\"url(&#039;https:\/\/www.iucn.nl\/app\/uploads\/2023\/01\/15Sander-IUCN-040722-scaled.jpg&#039;)\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" data-src=\"https:\/\/www.iucn.nl\/app\/uploads\/2023\/01\/15Sander-IUCN-040722-scaled.jpg\" alt=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 2560px; --smush-placeholder-aspect-ratio: 2560\/2560;\" \/>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<div class=\"team-members__info cell auto\">\n\t\t\t\t\t\t\t<div class=\"team-members__info-wrapper\">\n\t\t\t\t\t\t\t\t<div class=\"team-members__details\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.iucn.nl\/en\/sander-van-andel-senior-expert-nature-conservation\/\" target=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__name\">Sander \n\t\t\t\t\t\t\t\t\t\t\t\tvan Andel<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__jobtitle\">Senior Expert Nature Conservation<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__email\">Email:\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:sander.vanandel@iucn.nl\">sander.vanandel@iucn.nl<\/a>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__readmore\">\n\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.iucn.nl\/en\/sander-van-andel-senior-expert-nature-conservation\/\" target=\"\">Full profile<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"team-members__socials\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.linkedin.com\/in\/sander-van-andel-a6387728\/?originalSubdomain=nl\" class=\"team-members__socials-icon ico-linkedin\" aria-label=\"Linkedin profile of Sander  van Andel\" target=\"_blank\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" data-src=\"https:\/\/www.iucn.nl\/app\/themes\/gopublic-motor-theme-child\/src\/images\/linkedin-icon.svg\" alt=\"Linkedin logo\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\">\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n\n\n    <\/div>\n<\/div>\n\n<div class=\"speaker-mute footnotes_reference_container\"> <div class=\"footnote_container_prepare\"><h2><span role=\"button\" tabindex=\"0\" class=\"footnote_reference_container_label pointer\" onclick=\"footnote_expand_collapse_reference_container_10306_1();\">Index<\/span><span role=\"button\" tabindex=\"0\" class=\"footnote_reference_container_collapse_button\" style=\"display: none;\" onclick=\"footnote_expand_collapse_reference_container_10306_1();\">[<a id=\"footnote_reference_container_collapse_button_10306_1\">+<\/a>]<\/span><\/h2><\/div> <div id=\"footnote_references_container_10306_1\" style=\"\"><table class=\"footnotes_table footnote-reference-container\"><caption class=\"accessibility\">Index<\/caption> <tbody> \r\n\r\n<tr class=\"footnotes_plugin_reference_row\"> <th scope=\"row\" class=\"footnote_plugin_index_combi pointer\"  onclick=\"footnote_moveToAnchor_10306_1('footnote_plugin_tooltip_10306_1_1');\"><a id=\"footnote_plugin_reference_10306_1_1\" class=\"footnote_backlink\"><span class=\"footnote_index_arrow\">&#8593;<\/span>1<\/a><\/th> <td class=\"footnote_plugin_text\">Update 2025-I <a href=\"https:\/\/www.iucn.nl\/en\/news\/first-1000-fungi-on-iucn-red-list-reveal-growing-threats-iucn-red-list\/\"><span class=\"footnote_url_wrap\">https:\/\/www.iucn.nl\/en\/news\/first-1000-fungi-on-iucn-red-list-reveal-growing-threats-iucn-red-list\/<\/span><\/a><\/td><\/tr>\r\n\r\n<tr class=\"footnotes_plugin_reference_row\"> <th scope=\"row\" class=\"footnote_plugin_index_combi pointer\"  onclick=\"footnote_moveToAnchor_10306_1('footnote_plugin_tooltip_10306_1_2');\"><a id=\"footnote_plugin_reference_10306_1_2\" class=\"footnote_backlink\"><span class=\"footnote_index_arrow\">&#8593;<\/span>2<\/a><\/th> <td class=\"footnote_plugin_text\">For more information about which species, see: <a href=\"https:\/\/www.clo.nl\/indicatoren\/nl105219-aantal-bedreigde-en-verdwenen-soorten-in-nederland-per-2024\"><span class=\"footnote_url_wrap\">https:\/\/www.clo.nl\/indicatoren\/nl105219-aantal-bedreigde-en-verdwenen-soorten-in-nederland-per-2024<\/span><\/a><\/td><\/tr>\r\n\r\n <\/tbody> <\/table> <\/div><\/div><script type=\"text\/javascript\"> function footnote_expand_reference_container_10306_1() { jQuery('#footnote_references_container_10306_1').show(); 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jQuery('html, body').animate({ scrollTop: l_obj_Target.offset().top - window.innerHeight * 0.2 }, 380); } }<\/script>","protected":false},"excerpt":{"rendered":"<p>Header photo: Male Dugong and Golden trevally feeding on seagrass beds in Red Sea \u2013 Marsa Alam \u2013 Egypt (c) by cinoby from Getty Images Signature IUCN Red List: a comprehensive source of information The IUCN Red List constitutes an important source for setting priorities in nature policy worldwide. 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