{"id":411883,"date":"2019-12-08T13:05:48","date_gmt":"2019-12-08T12:05:48","guid":{"rendered":"http:\/\/hudo.com\/si\/?p=411883"},"modified":"2019-12-08T13:05:48","modified_gmt":"2019-12-08T12:05:48","slug":"porocilo-je-morda-zadnji-klic-nenadzorovanega-eksperimenta-ki-ga-clovestvo-izvaja-na-svetovnem-oceanu","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/aktualno\/porocilo-je-morda-zadnji-klic-nenadzorovanega-eksperimenta-ki-ga-clovestvo-izvaja-na-svetovnem-oceanu\/","title":{"rendered":"Poro\u010dilo: &#8220;To je morda zadnji klic nenadzorovanega eksperimenta, ki ga \u010dlove\u0161tvo izvaja na svetovnem oceanu&#8221;"},"content":{"rendered":"<p>Ugotovili so, da je po svetu okoli 700 morskih obmo\u010dij z nizkimi ravnmi kisika. To je znatno povi\u0161anje v primerjavi s 60. leti prej\u0161njega stoletja, ko jih je bilo vsega 45, pi\u0161e v poro\u010dilu z naslovom Deoksigenacija oceana: te\u017eava vsakogar, ki ga povzema nem\u0161ka tiskovna agencija dpa.<\/p>\n<p>&#8220;To je morda zadnji klic nenadzorovanega eksperimenta, ki ga \u010dlove\u0161tvo izvaja na svetovnem oceanu, medtem ko se oglji\u010dni izpusti \u0161e naprej pove\u010dujejo,&#8221; je dejal eden od urednikov poro\u010dila Dan Laffoley.<\/p>\n<p>Glede na poro\u010dilo sta za padajo\u010do vsebnost kisika v oceanih dva glavna vzroka, in sicer globalno segrevanje in onesna\u017eenje s hranili iz kmetijstva.<\/p>\n<p>\u010ce se morska voda segreva, navadno vsebuje manj kisika, in onesna\u017eenje voda s hranili iz ribogojnic ali gnojili iz kmetijstva, zlasti v obalnih regijah, vodi do pove\u010dane rasti alg, ki porabijo kisik. V vodah, v katerih ni dovolj kisika, bolje pre\u017eivijo mikrobi, meduze in sipe kot ribe.<\/p>\n<p>Baltsko in \u010crno morje sta najve\u010dja zaprta morska ekosistema z nizko vsebnostjo kisika, \u0161e pi\u0161e v poro\u010dilu. Medtem ko v \u010crnem morju za to delno obstajajo naravni razlogi, sta v Baltskem morju glavna vzroka uporaba gnojil in podnebne spremembe.<\/p>\n<p>Izguba kisika \u017ee spreminja ravnote\u017eje \u017eivljenja v morju v \u0161kodo dolo\u010denih vrst. Tuna in morski pes potrebujeta denimo veliko kisika zaradi svoje velikosti in energijskih potreb. Oba se bosta prisiljena umakniti v relativno bogate kisikove plasti v plitvej\u0161ih vodah, zaradi \u010desar bosta la\u017eji plen, kar bo vodilo v prekomerni ribolov, \u0161e navaja poro\u010dilo.<\/p>\n<p>Ocenjuje tudi, da bodo oceani glede na sedanji trend do leta 2010 na svetovni ravni izgubili od tri do \u0161tiri odstotke svojega kisika. Ve\u010dina izgube naj bi bila na zgornjih tiso\u010d metrih, ki je najbogatej\u0161i del oceana za biotsko raznovrstnost.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zmanj\u0161anje ravni kisika v morjih zaradi podnebnih sprememb postaja vse ve\u010dja gro\u017enja ribjim stale\u017eem, ribi\u0161tvu in obalnim skupnostim, ki \u017eivijo od ribi\u0161tva, je razvidno iz novega poro\u010dila, ki ga je v soboto na konferenci ZN o podnebnih spremembah COP25 v Madridu predstavila Mednarodna zveza za varstvo narave (IUCN).<\/p>\n","protected":false},"author":8,"featured_media":378263,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1179],"tags":[1790,8584],"source":[4511],"supertag":[6103],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Poro\u010dilo: &quot;To je morda zadnji klic nenadzorovanega eksperimenta, ki ga \u010dlove\u0161tvo izvaja na svetovnem oceanu&quot; - Hudo Slovenija<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hudo.com\/si\/aktualno\/porocilo-je-morda-zadnji-klic-nenadzorovanega-eksperimenta-ki-ga-clovestvo-izvaja-na-svetovnem-oceanu\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Poro\u010dilo: &quot;To je morda zadnji klic nenadzorovanega eksperimenta, ki ga \u010dlove\u0161tvo izvaja na svetovnem oceanu&quot; - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"Zmanj\u0161anje ravni kisika v morjih zaradi podnebnih sprememb postaja vse ve\u010dja gro\u017enja ribjim stale\u017eem, ribi\u0161tvu in obalnim skupnostim, ki \u017eivijo od ribi\u0161tva, je razvidno iz novega poro\u010dila, ki ga je v soboto na konferenci ZN o podnebnih spremembah COP25 v Madridu predstavila Mednarodna zveza za varstvo narave (IUCN).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hudo.com\/si\/aktualno\/porocilo-je-morda-zadnji-klic-nenadzorovanega-eksperimenta-ki-ga-clovestvo-izvaja-na-svetovnem-oceanu\/\" \/>\n<meta property=\"og:site_name\" content=\"Hudo Slovenija\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hudo.si\" \/>\n<meta property=\"article:published_time\" content=\"2019-12-08T12:05:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hudo.com\/si\/wp-content\/uploads\/sites\/2\/2018\/09\/profimedia-0381041590.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"820\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"M. 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