{"id":13354,"date":"2021-10-06T00:00:00","date_gmt":"2021-10-06T00:00:00","guid":{"rendered":"https:\/\/www.nextias.com\/current_affairs\/uncategorized\/06-10-2021\/global-coral-reef-monitoring-network-gcrmn-report\/"},"modified":"2025-09-11T18:19:05","modified_gmt":"2025-09-11T12:49:05","slug":"global-coral-reef-monitoring-network-gcrmn-report","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/06-10-2021\/global-coral-reef-monitoring-network-gcrmn-report","title":{"rendered":"Global Coral Reef Monitoring Network (GCRMN) Report"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>In News<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Recently, <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Global Coral Reef Monitoring Network (GCRMN) <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">has released a report on the status of coral reefs across the world.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>Key Highlights of the report<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The report underlined the<\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong> catastrophic consequences of global warming <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">but said that some coral reefs can be <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>saved by arresting greenhouse gases<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Rising ocean temperatures <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">killed about 14% of the world&#8217;s coral reefs between 2009 and 2018.<\/span><\/span><\/span>\n<ul>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Coral bleaching events<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> caused by elevated sea surface temperatures&#8221; as the biggest driver of coral loss.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">It is equivalent to more than all of the living coral in Australia.<\/span><\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Reasons for the decline:<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> The report found that warming caused by climate change, overfishing, coastal development and declining water quality has placed coral reefs around the world under &#8220;relentless stress.&#8221;<\/span><\/span><\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>What are Coral Reefs?<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">A coral reef is an <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>underwater ecosystem<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> characterized by <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>reef-building corals.<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Reefs are formed of colonies of <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>coral polyps <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">held together by calcium carbonate.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The coral polyps live in an endosymbiotic relationship with algae.\u00a0<\/span><\/span><\/span>\n<ul>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Algae provide up to 90 per cent of the coral&#8217;s energy.<\/span><\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Temperature:<\/strong><\/span><\/span><\/span>\n<ul>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The temperature of the water should not be below 20\u00b0C.\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The most favourable temperature for the growth of the coral reefs is between 23\u00b0C to 25\u00b0C.\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The temperature should not exceed 35\u00b0C.<\/span><\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Salinity: <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Corals can survive only under saline conditions with an average salinity between 27% to 40%.\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Shallow Water:<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> Coral reefs grow better in shallow water having a depth less than 50 m. The depth of the water should not exceed 200m.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Coral reefs are divided into four classes:\u00a0<\/span><\/span><\/span>\n<ul>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">fringing reefs,\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">barrier reefs,\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">atolls, and\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: circle;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">patch reefs<\/span><\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>Importance of Coral Reefs<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Coral Reefs provide an<\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong> important ecosystem for marine life<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">, protect coastal areas by reducing the power of waves hitting the coast, and provide a crucial source of income for millions of people.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Coral reefs have an estimated <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>global value of \u00a36 trillion each year<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">, due in part to their contribution to the fishing and tourism industries and the coastal protection they provide.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">More than 500 million people worldwide <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>depend on reefs for food, jobs and coastal defence.\u00a0<\/strong><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Extracts from animals and plants living on reefs have been used to <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>develop treatments <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">for asthma, arthritis, cancer and heart disease.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>Challenges to Coral Ecosystem<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Physical damage or destruction <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">from coastal development, dredging, quarrying, destructive fishing practices and gear, boat anchors and groundings, and recreational misuse (touching or removing corals).<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Pollution originates on land<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> but finds its way into coastal waters. There are many types and sources of pollution from land-based activities.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Overfishing <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">can alter the food-web structure and cause cascading effects, such as reducing the numbers of grazing fish that keep corals clean of algal overgrowth. <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Blast fishing <\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">(i.e., using explosives to kill fish) can cause physical damage to corals as well.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>Coral harvesting<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> for the aquarium trade, jewellery, and curios can lead to over-harvesting of specific species, destruction of reef habitat, and reduced biodiversity.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>What is Coral Bleaching?<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Coral bleaching occurs when environmental conditions surrounding coral change. One example is when temperatures drastically rise or fall, the coral will release <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong>symbiotic algae<\/strong><\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"> living inside their tissue, causing the coral to become white.\u00a0<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Coral bleaching does not directly cause them to die but does place a higher degree of stress on the organisms.<\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">The algae provide food for the coral, and the longer a coral reef is exposed to conditions that cause bleaching, the more likely it is to starve and die.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-size: 13pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\"><strong><u>Conclusion<\/u><\/strong><\/span><\/span><\/span><\/p>\n<ul>\n<li style=\"list-style-type: disc;\"><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Maintaining the integrity and resilience of coral reef ecosystems is essential for the wellbeing of tropical coastal communities worldwide, and a critical part of the solution for achieving the Sustainable Development Goals under the 2030 Agenda for Sustainable Development.<\/span><\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #000000;\">Source: <\/span><\/span><\/span><span style=\"font-size: 12pt;\"><span style=\"font-family: 'Book Antiqua',serif;\"><span style=\"color: #1155cc;\"><u>Reuters<\/u><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In News Recently, Global Coral Reef Monitoring Network (GCRMN) has released a report on the status of coral reefs across the world. Key Highlights of the report The report underlined the catastrophic consequences of global warming but said that some coral reefs can be saved by arresting greenhouse gases. Rising ocean temperatures killed about 14% [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13355,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[60,26],"class_list":["post-13354","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-environmental-pollution-degradation","tag-gs-3"],"acf":[],"jetpack_featured_media_url":"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2023\/07\/6479574Screenshot.png","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/13354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=13354"}],"version-history":[{"count":1,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/13354\/revisions"}],"predecessor-version":[{"id":53750,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/13354\/revisions\/53750"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media\/13355"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=13354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=13354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=13354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}