{"id":65000,"date":"2018-06-21T06:00:08","date_gmt":"2018-06-21T10:00:08","guid":{"rendered":"https:\/\/blog.nature.org\/?p=65000"},"modified":"2021-05-06T14:52:27","modified_gmt":"2021-05-06T18:52:27","slug":"intense-human-pressure-threatens-one-third-of-protected-areas","status":"publish","type":"post","link":"https:\/\/blog.nature.org\/2018\/06\/21\/intense-human-pressure-threatens-one-third-of-protected-areas\/","title":{"rendered":"Intense Human Pressure Threatens One-third of Protected Areas"},"content":{"rendered":"\n<p>Protected areas \u2014 they\u2019re the foundation of modern conservation efforts, the most common tool used by every nation to safeguard biodiversity against human influence. But what if they don\u2019t actually work? <\/p>\n\n<p>New research finds that one-third of all global protected land is under intense human pressure, questioning the effectiveness of these areas for biodiversity conservation. <\/p>\n\n<h2 class=\"wp-block-heading\">Mapping Humanity\u2019s Footprints on the Land<\/h2>\n\n<p>Since the 1992 Earth Summit in Rio de Janeiro, the extent of protected areas has roughly doubled in size, to 14.7 percent of the world\u2019s land area. Lauded as a sign of hope for biodiversity in an otherwise dark world, this expansion is tied to the Convention for Biological Diversity, an international treaty in which signatory countries committed to include at least 17 percent of their land in effectively managed and ecologically representative protected areas by 2020.<\/p>\n\n<p>\u201cThe conservation community keeps celebrating this massive protected area estate, but no one is asking the obvious question,\u201d says <a href=\"https:\/\/sees.uq.edu.au\/profile\/9281\/james-watson\"><span style=\"font-weight: 400;\">James Watson<\/span><\/a><br>\n<\/p>\n\n<p>To answer that question, Watson and his colleagues in Canada and Australia mapped human pressure within 8,950 of the world\u2019s protected areas. Their dataset combines eight signatures of human presence \u2014 built environments, agriculture, pasturelands, population density, nighttime lights, roads, railways, and navigable waterways \u2014 to estimate the amount of human pressure on the landscape, and by inference a loss of biodiversity. <br>\n<\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"65004\" data-permalink=\"\" data-orig-file=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png\" data-orig-size=\"1522,1113\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Fig1\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;This map shows the proportion of each protected area that is subject to intense human pressure. Examples include: (B) Kamianets- Podilskyi, a city within Podolskie Tovtry National Park, Ukraine. (C) Major roads fragment habitat within Mikumi National Park, Tanzania. (D) Agriculture and buildings within Dadohaehaesang National Park, South Korea. Graphic \u00a9 Watson, et al. \/ Google Earth&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png?w=300\" data-large-file=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png?w=800\" height=\"585\" width=\"800\" src=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png\" alt=\"\" class=\"wp-image-65004\" srcset=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png 1522w, https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png?resize=300,219 300w, https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png?resize=768,562 768w, https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/Fig1.png?resize=800,585 800w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">This map shows the proportion of each protected area that is subject to intense human pressure. Examples include: (B) Kamianets- Podilskyi, a city within Podolskie Tovtry National Park, Ukraine. (C) Major roads fragment habitat within Mikumi National Park, Tanzania. (D) Agriculture and buildings within Dadohaehaesang National Park, South Korea. Graphic \u00a9 Watson, et al. \/ Google Earth<\/figcaption>\n<\/figure>\n\n<p>Their results show that more than one-third of global protected lands are under intense human pressure. \u201cThat\u2019s about 6 million square kilometers of land that\u2019s being harmed\u201d says Watson, \u201cor twice the size of Alaska.\u201d Furthermore, only 42 percent of protected land is free from measurable human pressures, while an estimated 57 percent of protected areas contain only land under intense pressure.<\/p>\n\n<p>The team\u2019s results also show that protected area effectiveness doesn\u2019t improve with a nation\u2019s economic status. \u201cNations like Australia and the United States, who should be setting the standard for the global community, are the ones who are doing pretty badly,\u201d says Watson.\u00a0<\/p>\n\n<p>The researchers note that their human footprint dataset does not directly measure the impact on biodiversity, and doesn\u2019t take into account all measures of human pressure, including climate change. Yet Watson says that their result is an extremely conservative estimate, because they are only looking at significant human pressure. <\/p>\n\n<p>Additionally, the study only took into account 8,950 of the world\u2019s 202,000 protected areas. \u201cSo about 95 percent of protected areas are too small for us to even measure if they have human pressures inside of them,\u201d says Watson, \u201cwhich means that they almost certainly are under pressure.\u201d<\/p>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/blog.nature.org\/wp-content\/uploads\/2018\/06\/clearing-for-agriculture-Niassa-Reserve-Mozambique-credit-James-Allan-1260x708.jpg\" alt=\"\" class=\"wp-image-1260\"\/><figcaption class=\"wp-element-caption\">Clearing for agriculture Niassa Reserve, Mozambique. Photo \u00a9 James Allan<\/figcaption>\n<\/figure>\n\n<h2 class=\"wp-block-heading\">A Course Correction for Conservation<\/h2>\n\n<p>To date, 111 nations that have already achieved Aichi Target 11, protecting 17 percent of their terrestrial area. But 74 of those nations would no longer meet their target if we exclude lands already under significant human pressure. Meanwhile, protection of certain biomes, like mangroves or temperate forests, would drop more than 70 percent.<\/p>\n\n<p>\u201cThe text in the CBD says protected areas must be effectively managed for conservation, but we need to actually uphold that definition,\u201d says Watson.<\/p>\n\n<p>Another potential solution is to direct limited conservation dollars to better management for existing protected areas, instead of racing to establish new ones. \u201cThe evidence is mounting for increased management trumping expansion as the best investment in conservation for many countries,\u201d says <a href=\"https:\/\/www.nature.org\/science-in-action\/our-scientists\/chief-scientist-hugh-possingham.xml\"><span style=\"font-weight: 400;\">Hugh Possingham<\/span><\/a>, chief scientist for The Nature Conservancy. <\/p>\n\n<p>He cites <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/conl.12433\"><span style=\"font-weight: 400;\">recent research from the Great Barrier<\/span> <span style=\"font-weight: 400;\">Ree<\/span><\/a><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/conl.12433\">f<\/a> which demonstrated that expanding an existing protected area can actually have negative conservation outcomes, because it spreads enforcement out over a larger area, thereby increasing the likelihood of poaching or other illegal activity. <\/p>\n\n<p>\u201cEnvironmental NGOs, like The Nature Conservancy, are the ones that can lead the way by investing in protected areas and endowing their management costs,\u201d says Possingham.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Protected areas are the most common tool used by conservationists to protect biodiversity. But what if they don\u2019t actually work? <\/p>\n","protected":false},"author":304,"featured_media":65002,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"byline":{"profiles":[{"type":"byline_id","atts":{"term_id":19072,"post_id":48086}}]},"cgs_exclude_from_tnc_science":false,"cgs_references":"","cgs_subhed":"Protected areas are the most common tool used by conservationists to protect biodiversity. But what if they don't actually work? \r\n","cgs_featured_video":"","cgs_related_content":[{"id":56260,"title":"Global Wilderness Areas in Decline Despite Conservation Targets"}],"cgs_related_links":[{"title":"Jones, K.R., et al. (2018). One-third of global protected land is under intense human pressure. Science.","url":"http:\/\/science.sciencemag.org\/content\/360\/6390\/788"}],"cgs_evergreen_permalink":false,"footnotes":""},"categories":[19273],"tags":[],"biodiversity":[],"geography":[],"environment":[18914],"tnc_place":[],"tnc_program":[],"conservation_science":[],"technology":[],"activity":[],"cgs_series":[],"content_type":[],"special_feature":[18999,19001,18992],"editorial_metadata":[],"byline":[19072],"class_list":["post-65000","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","environment-protected-areas","special_feature-biodiversity-protected-areas","special_feature-biodiversity-siting","special_feature-global-policy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Intense Human Pressure Threatens One-third of Protected Areas<\/title>\n<meta name=\"description\" content=\"Protected areas are the most common tool used by conservationists to protect biodiversity. 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