{"id":40092276,"date":"2022-09-08T18:03:15","date_gmt":"2022-09-08T17:03:15","guid":{"rendered":"https:\/\/chinadialogueocean.net\/?post_type=photo_story&#038;p=92276"},"modified":"2026-04-28T10:17:15","modified_gmt":"2026-04-28T09:17:15","slug":"banc-darguin-a-blue-carbon-custodian","status":"publish","type":"photo_story","link":"https:\/\/dialogue.earth\/en\/uncategorized\/banc-darguin-a-blue-carbon-custodian\/","title":{"rendered":"Banc d\u2019Arguin: A blue carbon custodian"},"content":{"rendered":"\n<p class=\"has-drop-cap\">The Banc d\u2019Arguin National Park, West Africa\u2019s largest marine protected area, wears many important hats.<\/p>\n\n\n\n<p>It is a key site for migratory birds, welcoming more than two million waterbirds every winter. It is home to diverse marine animals, from amphibious mudskipper fish to endangered sea turtles. And, according to Unesco, it is a crucial \u201ccustodian\u201d of the world\u2019s blue carbon assets, meaning&nbsp;it hosts ecosystems with an exceptional ability to sequester carbon and help mitigate climate change.<\/p>\n\n\n\n<p>Even as a natural reserve protected by a Mauritanian <a href=\"https:\/\/www.fao.org\/faolex\/results\/details\/en\/c\/LEX-FAOC170207\/\">special law<\/a>, &nbsp;Banc d\u2019Arguin can\u2019t be spared from threats faced by the global ocean as a whole. Scientists have warned that sea-level rise, overfishing and oil and gas extraction are overshadowing its future.<\/p>\n\n\n\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--wide\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"Banc d'Arguin coastline: Located where the Sahara meets the Atlantic, the park showcases the great contrast between arid desert and the resource-rich ecosystems of coast and sea\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">Located where the Sahara meets the Atlantic, the park showcases the great contrast between arid desert and the resource-rich ecosystems of coast and sea (Image: Peter Howard\/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-desert-meets-ocean_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-makes-banc-d-arguin-special\">What makes Banc d\u2019Arguin special?<\/h2>\n\n\n\n<p>The park has been a Unesco world heritage site since 1989 and a Ramsar Wetland of International Importance since 1982. It spans an area of 12,000km\u00b2 and stretches along over 30% of the Mauritanian coast.<\/p>\n\n\n\n<p>\u201cBanc d\u2019Arguin is unique in so many ways,\u201d says Dr Lemhaba Yarba Ahmed Mahmoud, the park\u2019s scientific advisor. <\/p>\n\n\n\n<div class=\"wp-block-cd-article-image alignleft block--article-image block--article-image--fullwidth\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--article-image__column\"><div class=\"hide-expand block--article-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220901_Banc-darguin-satellite-1-scaled.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220901_Banc-darguin-satellite-1-768x747.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220901_Banc-darguin-satellite-1-1024x996.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220901_Banc-darguin-satellite-1-scaled.jpg 2560w\" data-sizes=\"(max-width: 600px) 768px, (max-width: 1024px) 1024px, 2560px\" alt=\"Map of Banc d'Arguin National Park, Mauritania\"\/><\/div><div class=\"block--article-image__content\"><div itemprop=\"caption\" class=\"block--article-image__caption\">Banc d&#8217;Arguin National Park, on Mauritania&#8217;s northwest coast \u2022 Map by China Dialogue Ocean<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220901_Banc-darguin-satellite-1-scaled.jpg\"\/><meta itemprop=\"contentSize\" content=\"417 KB\"\/><meta itemprop=\"height\" content=\"2490\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>It is the meeting place of a dry, harsh desert and a vast blue ocean: to its east is the Sahara and to its west the North Atlantic. It boasts a mosaic of features from both environments, including windblown sand dunes and banks, coastal swamps, marshes and tidal mudflats.<\/p>\n\n\n\n<p>El-Hacen Mohamed El-Hacen, a conservationist with the national park, says its uniqueness also lies in the shallowness of the waters.<\/p>\n\n\n\n<p>Its submarine tidal bank \u2013 usually less than five metres deep and extending 80km from the shoreline \u2013 teems with life.<\/p>\n\n\n\n<p>Nesting birds, migratory waders and juvenile fish all find the tidal area an ideal habitat to feed or breed, says Mohamed El-Hacen.<\/p>\n\n\n\n<p>\u201cThere are only very few places that have shallow waters in the whole of West Africa,\u201d he adds. \u201cIt provides services to biodiversity that no other places can.\u201d<\/p>\n\n\n\n<p>Endangered <a href=\"https:\/\/www.iucnredlist.org\/species\/4615\/11037468\">green sea turtles<\/a>, as well as monk seals, bottlenose dolphins and Atlantic humpbacked dolphins, can also be sighted in the shallow waters of the park.<\/p>\n\n\n\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--wide\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites-768x511.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites-1024x681.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites-1400x931.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites-1800x1197.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"a flock of migratory birds on a beach shoreline in Mauritania\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">During the winter months, Banc d\u2019Arguin welcomes more than two million migratory birds, some from as far afield as Siberia or Greenland (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-migratory-birds_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1702\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites-768x511.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites-1024x681.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites-1400x931.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites-1800x1197.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"Fiddler crabs can be found in abundance on the Banc d'Arguin national park\u2019s extensive mudflats\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">Fiddler crabs can be found in abundance on the park\u2019s extensive mudflats. They are a key source of food for birds such as terns and herons. (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fiddler-crabs_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1702\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites-768x511.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites-1024x681.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites-1400x931.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites-1800x1197.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"People in yellow overalls sit in a boat looking at a Mediterranean monk seal on turquoise waters of the Banc d'Arguin coast\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">The park is also home to a significant proportion of the world\u2019s Mediterranean monk seals. With fewer than 700 individuals, the species is one of the world\u2019s rarest animals. (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-monk-seal_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"1 MB\"\/><meta itemprop=\"height\" content=\"1702\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n<\/div>\n\n\n\n<p>Another treasure of the park is plentiful at the bottom of these shallows: seagrasses.&nbsp;<\/p>\n\n\n\n<a class=\"wp-block-cd-related-news alignright block--related-news loading\" data-post-id=\"40091509\"><div class=\"block--related-news__image\"><\/div><div class=\"block--related-news__content\"><span class=\"block--related-news__heading\">Recommended<\/span><span class=\"block--related-news__title\"><\/span><\/div><\/a>\n\n\n\n<p>Together with mangroves and salt marshes, seagrasses are recognised as \u201cblue carbon sinks\u201d because they can capture and store carbon, thereby helping to mitigate climate change.<\/p>\n\n\n\n<p>In fact, scientists say these coastal ecosystems can sequester carbon more effectively than terrestrial forests. Seagrass, for instance, can lock carbon into the seabed <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4633871\/\">35<\/a> times faster than tropical rainforests. Although seagrass meadows only occupy 0.2% of the sea floor, they account for <a href=\"https:\/\/www.unep.org\/news-and-stories\/story\/seagrass-secret-weapon-fight-against-global-heating\">10%<\/a>\u00a0of the total carbon annually buried in the ocean.<\/p>\n\n\n\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--wide\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites-768x511.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites-1024x681.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites-1400x931.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites-1800x1197.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"Banc d\u2019Arguin hosts West Africa\u2019s northern-most mangroves. \"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">Banc d\u2019Arguin hosts West Africa\u2019s northernmost mangroves. As with the park\u2019s extensive seagrass beds, mangroves are adept at capturing and storing carbon. (Image: Peter Howard\/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-mangroves_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1702\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>\u201cBanc d\u2019Arguin plays one of the most important roles in carbon sequestration because of its seagrasses,\u201d Mohamed El-Hacen says. &nbsp;<\/p>\n\n\n\n<p>Scientists estimate that <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0303243421001264\">772km\u00b2<\/a> of the park\u2019s surface is covered by seagrass. According to a Unesco <a href=\"https:\/\/whc.unesco.org\/en\/blue-carbon-report\/\">report<\/a> published last year, those seagrass beds hold 109 million tonnes of carbon. This is equivalent to the average emissions of 97 coal-fired power plants in one year, based on the US Environmental Protection Agency\u2019s greenhouse gas equivalencies <a href=\"https:\/\/www.epa.gov\/energy\/greenhouse-gas-equivalencies-calculator\">calculator<\/a>. Unesco has ranked the park as the third-largest blue carbon sink among all the world heritage sites, below only the Everglades National Park and the Great Barrier Reef.<\/p>\n\n\n\n<p>Yarba Ahmed Mahmoud notes that the park\u2019s blue carbon value is even larger than Unesco\u2019s estimation. He says the assessment only evaluated the carbon sequestration by seagrasses, overlooking the value of extensive bare mudflats. Also known as tidal flats,&nbsp;the carbon sequestration potential of these ecologies is increasingly being <a href=\"https:\/\/www.researchgate.net\/publication\/360999909_Tidal_Flats_as_a_Significant_Carbon_Reservoir_in_Global_Coastal_Ecosystems\">studied<\/a> and recognised.<\/p>\n\n\n\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--wide\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\" skeleton of a whale on Mauritanian coast\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">One of Banc d\u2019Arguin\u2019s landmarks, this whale skeleton outside the Imik patrol post is a testament to the area\u2019s rich biodiversity (Image: Peter Howard\/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-whale-bones_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>The park has one of the most concentrated populations of marine mammals in West Africa. These animals can contribute to carbon sequestration too, Yarba Ahmed Mahmoud says.<\/p>\n\n\n\n<a class=\"wp-block-cd-related-news alignright block--related-news loading\" data-post-id=\"40077158\"><div class=\"block--related-news__image\"><\/div><div class=\"block--related-news__content\"><span class=\"block--related-news__heading\">Recommended<\/span><span class=\"block--related-news__title\"><\/span><\/div><\/a>\n\n\n\n<p>Recent <a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.abb4848\">research<\/a> shows that large marine mammals capture and store carbon in their enormous bodies over their lifetime. When they die, this carbon then sinks with their carcasses to the bottom of the ocean, where it may remain for centuries. In this way, an adult whale sequesters an average of <a href=\"https:\/\/www.imf.org\/Publications\/fandd\/issues\/2019\/12\/natures-solution-to-climate-change-chami\">33 tonnes<\/a> of carbon dioxide, the IMF estimates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A park under threat<\/h2>\n\n\n\n<p>Banc d\u2019Arguin\u2019s flourishing ecosystems and abundant natural resources have caught the attention of industrial fishing fleets and oil and gas companies. Their operations in the region are putting pressure on the park.<\/p>\n\n\n\n<p>The IUCN rated the park\u2019s conservation outlook as a \u201c<a href=\"https:\/\/worldheritageoutlook.iucn.org\/explore-sites\/wdpaid\/20388\">significant concern<\/a>\u201d in 2020, stating its value was deteriorating due to threats, including overfishing, oil and gas exploration, and climate change.<\/p>\n\n\n\n<p>\u201cSome threats are coming from the outside,\u201d Yarba Ahmed Mahmoud says. \u201cThere are a lot of motorised boats that fish in the vicinity. And they all want to go inside the park. So, there is a lot of pressure.\u201d<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"Member of the Imraguen community \"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">The Imraguen community are indigenous to the Banc d\u2019Arguin area, and the only people allowed to live and fish within the park\u2019s boundaries (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-fisher_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"The Imraguen traditionally fish using nets and by wading into the shallows on foot. The wooden sailing vessels they now also use are limited in number by the park authorities. \"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">The Imraguen traditionally fish using nets and by wading into the shallows on foot. The wooden sailing vessels they now also use are limited in number by the park authorities. (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-Imraguen-sailing-vessels_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n<\/div>\n\n\n\n<p>The Imraguen people, most of whom live within Banc d\u2019Arguin where there is a population of roughly 1,000, are the only ones permitted to fish in the protected area using traditional, sustainable methods. But the IUCN\u2019s 2020 <a href=\"https:\/\/worldheritageoutlook.iucn.org\/explore-sites\/wdpaid\/20388\">assessment<\/a> said that in recent years, an increase in international fishing fleets operating in waters close to the park has added pressure on its marine ecosystem and reduced the catch of Imraguen communities.<\/p>\n\n\n\n<p>Inside the park, artisanal fishing has become increasingly commercialised, with Imraguen fishers increasing their catches and targeting lucrative species such as sharks and rays. &nbsp;<\/p>\n\n\n\n<p>In 2003, the park authorities reached an <a href=\"https:\/\/wwf.panda.org\/wwf_news\/?11278\/Ray-and-shark-fishing-to-stop-in-Mauritanian-national-park\">agreement<\/a> with the Imraguen to halt the targeted fishing of sharks and rays and stop the use of nets designed for these species. &nbsp;&nbsp;<\/p>\n\n\n\n<p>But Yarba Ahmed Mahmoud says that the park has yet to successfully avert illegal fishing within its jurisdiction due to the demands for these species from African and Asian markets.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"rays caught illegally in Banc d'arguin\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">Driven by high demand on the international market, Banc d\u2019Arguin started to see unsustainable levels of fishing for sharks and rays in the mid-1980s (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fished-rays_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--article\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"fishing nets and rope laid on the sand of a beach in Mauritania\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">Although local fishers agreed in 2003 to stop using nets designed to catch these species, levels of bycatch remain high to this day (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-fishing-nets_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"2 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n<\/div>\n<\/div>\n\n\n\n<p>The risk of a potential oil spill has also caused unease among conservationists.<\/p>\n\n\n\n<p>Oil and gas exploration and exploitation are banned within the park and a 5km buffer zone around it. However, the Mauritanian government has granted concessions near the park, and offshore exploitation has been going on in the country since 2006.<\/p>\n\n\n\n<p>\u201cSuddenly, the park was in the middle of these gas extractions,\u201d Yarba Ahmed Mahmoud says. \u201cThere are <a href=\"https:\/\/www.shell.com\/media\/news-and-media-releases\/2018\/shell-secures-exploration-acreage-offshore-mauritania.html\">Shell<\/a>, <a href=\"https:\/\/totalenergies.com\/media\/news\/press-releases\/mauritania-total-expands-exploration-activities-country-new-deep-offshore-license\">Total <\/a>and <a href=\"https:\/\/www.capricornenergy.com\/operations\/mauritania\/\">Capricorn.<\/a> All these companies are now in the area. They are not in the park but not far away, trying to extract gas.\u201d<\/p>\n\n\n\n<p>Apart from increasing the risk of an oil spill accident, the expansion of oil and gas extraction also creates noise pollution that can potentially harm marine mammals, according to the IUCN report.<\/p>\n\n\n\n<div class=\"wp-block-cd-story-image aligncenter block--story-image block--story-image--wide\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><div class=\"block--story-image__column\"><div class=\"block--story-image__image\"><img class=\"lazy\" data-src=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites.jpg\" data-srcset=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites-768x514.jpg 768w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites-1024x686.jpg 1024w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites-1400x937.jpg 1400w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites-1800x1205.jpg 2000w, https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites.jpg\" data-sizes=\"(max-width: 600px) 768px, (max-width: 999px) 1024px, (max-width: 1400px) 1400px, (max-width: 2000px) 2000px, 2560px\" alt=\"The park\u2019s sandy coastline is vulnerable to erosion from both wind and sea. Rising sea-levels due to climate change add to the risks faced by coastal communities, especially during extreme weather events. (Image: Peter Howard \/ Natural World Heritage Sites)\"\/><\/div><div class=\"block--story-image__content\"><div itemprop=\"caption\" class=\"block--story-image__caption\">The park\u2019s sandy coastline is vulnerable to erosion from both wind and sea. Rising sea-levels due to climate change add to the risks faced by coastal communities, especially during extreme weather events. (Image: Peter Howard \/ <a href=\"https:\/\/www.naturalworldheritagesites.org\/?avia_forced_reroute=1\">Natural World Heritage Sites<\/a>)<\/div><\/div><\/div><meta itemprop=\"contentUrl\" content=\"https:\/\/dialogue.earth\/content\/uploads\/2022\/09\/20220908_Mauritania-Banc-d-Arguin-coastal-erosion_PeterHoward_NaturalWorldHeritageSites.jpg\"\/><meta itemprop=\"contentSize\" content=\"1 MB\"\/><meta itemprop=\"height\" content=\"1714\"\/><meta itemprop=\"width\" content=\"2560\"\/><meta itemprop=\"author\"\/><meta itemprop=\"representativeOfPage\" content=\"true\"\/><\/div>\n\n\n\n<p>The threat of sea-level rise due to climate change is not far from its doorstep either. The rising seawater has already gained ground and changed the park\u2019s coastline. A <a href=\"https:\/\/esajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ecs2.3364\">study<\/a> in 2021, co-authored by Mohamed El-Hacen, estimated that 83% of the park\u2019s \u201cpopulated coastline\u201d is exposed to \u201ca moderate to high risk of flooding and erosion\u201d, and local fishing villages might face the possibility of displacement in the wake of hazards such as storms.<\/p>\n\n\n\n<p>Mohamed El-Hacen says the park provides so many irreplaceable services to the natural world that it cannot be left alone to tackle these challenges, especially the cross-regional issues of climate change and illegal trade of sharks and rays.<\/p>\n\n\n\n<p>\u201cThe pressure is high. The stakes [are] high,\u201d says Mohamed El-Hacen. \u201cFor the park to fulfil its roles, it [will] take a lot of international cooperation to mitigate and prevent the place from being lost.\u201d<\/p>\n\n\n\n<p><br><em>We are grateful to Peter Howard, who created a <a href=\"https:\/\/www.naturalworldheritagesites.org\/about\/\">website<\/a> to raise awareness of natural world heritage sites, for the use of his photographs in this article.<\/em><\/p>\n\n\n\n<p><em>Li Yedan also contributed to the story research.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A valuable carbon sink, the Mauritanian national park faces multiple pressures from overfishing, oil and gas extraction and climate change<\/p>\n","protected":false},"featured_media":40092300,"comment_status":"closed","ping_status":"closed","template":"","categories":[50039901,1],"tags":[511,582],"country":[],"class_list":["post-40092276","photo_story","type-photo_story","status-publish","has-post-thumbnail","hentry","category-ocean","category-uncategorized","tag-biodiversity","tag-protected-areas"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Banc d\u2019Arguin: A blue carbon custodian<\/title>\n<meta name=\"description\" content=\"A valuable carbon sink, the Mauritanian national park faces multiple pressures from overfishing, oil and gas extraction and climate change\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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