{"id":357060,"date":"2018-02-02T10:27:32","date_gmt":"2018-02-02T09:27:32","guid":{"rendered":"https:\/\/hudo.com\/si\/2018\/02\/02\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/"},"modified":"2018-02-02T10:27:32","modified_gmt":"2018-02-02T09:27:32","slug":"nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/","title":{"rendered":"Nova prestresljiva \u0161tudija: Severni medvedi stradajo zaradi taljenja arkti\u010dnega ledu"},"content":{"rendered":"<div class=\"text\">\n<p>V \u0161tudiji so preu\u010dili podatke, ki so jih raziskovalci med aprilom in julijem lani zbirali na podro\u010dju arkti\u010dnega Beaufortovega morja. Podatke so zbirali s spremljanjem devetih severnih medvedk.<\/p>\n<p>Na podlagi raziskave so ugotovili, da je metabolizem severnega medveda kar 1,4-krat hitrej\u0161i, kot so prvotno domnevali. Kar pet od devetih medvedk je telesno te\u017eo izgubilo v osmih do 11 dneh, saj so imele te\u017eave pri ulovu zadostne koli\u010dine plena. Ulov je bil namre\u010d precej manj\u0161i kot njihova potreba zaradi porabe energije. \u0160tudija je razkrila, da so kar \u0161tiri medvedke izgubile 10 ali celo ve\u010d odstotkov svoje telesne te\u017ee, ena od medvedk pa je izgubila tudi na mi\u0161i\u010dni masi.<\/p>\n<p>Glavni avtor poro\u010dila, Anthony Pagano s Kalifornijske univerze v Santa Cruzu, je dejal, da so medvedke v \u010dasu, ko naj bi se redile, izgubljale svojo te\u017eo. Kot je povedal, naj bi severni medvedi v pomladanski sezoni, ko je bila opravljena raziskava, morali ujeti najve\u010d svojega plena in s tem pridobiti tudi najve\u010d tol\u0161\u010de, ki bi jim pomagala pri pre\u017eivetju \u010dez leto.<\/p>\n<p>Prej\u0161nji poskusi ocen metabolizma severnih medvedov so temeljili na predpostavkah, ki so se zdaj izkazale za napa\u010dne. Raziskovalci so namre\u010d trdili, da medvedi pri lovu porabijo zelo malo svoje energije, saj naj bi bili primarno lovci, ki sedijo in \u010dakajo na plen. Izpostavljali pa so tudi, da lahko severni medvedi upo\u010dasnijo svoj metabolizem, \u010de pri ulovu niso dovolj uspe\u0161ni. To bi pripomoglo k ohranjanju njihove energije.<\/p>\n<p>&#8220;Ugotovili smo, da imajo severni medvedi veliko ve\u010dje zahteve po energiji, kot smo sprva predvidevali. Da bi jih zadovoljili, bi morali uloviti velike koli\u010dine tjulnjev,&#8221; je dejal Pagano, ki je med drugim tudi biolog za divje \u017eivali na Geolo\u0161kem zavodu ZDA.<\/p>\n<p>Arktika se zaradi podnebnih sprememb segreva dvakrat hitreje kot ostali deli planeta. Taljenje ledu sili severne medvede, da za ulov svojega glavnega plena &#8211; mladih tjulnjev &#8211; potujejo veliko dlje, kot so v preteklosti.<\/p>\n<p>&#8220;Koli\u010dina ledu na Arktiki se manj\u0161a s hitrostjo 14 odstotkov na deset let. To najverjetneje vpliva tudi na zmanj\u0161anje ulova severnih medvedov,&#8221; so zapisali v \u0161tudiji.<\/p>\n<p>Populacija severnih medvedov se je v zadnjem desetletju zmanj\u0161ala za pribli\u017eno 40 odstotkov, \u0161e navaja AFP.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Severni medvedi imajo zaradi taljenja arkti\u010dnega ledu kot posledice globalnega segrevanja ozra\u010dja velike te\u017eave pri ulovu plena, predvsem tjulnjev, ki so njihova glavna hrana. Zato stradajo \u017ee v glavni sezoni lova, ko bi se morali rediti, po poro\u010danju tujih tiskovnih agencij ka\u017ee \u0161tudija, ki jo je v \u010detrtek objavila znanstvena revija Science.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1091],"tags":[1538,10460,1682,1687],"source":[1522,1518,1552],"supertag":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nova prestresljiva \u0161tudija: Severni medvedi stradajo zaradi taljenja arkti\u010dnega ledu - 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\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nova prestresljiva \u0161tudija: Severni medvedi stradajo zaradi taljenja arkti\u010dnega ledu - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"Severni medvedi imajo zaradi taljenja arkti\u010dnega ledu kot posledice globalnega segrevanja ozra\u010dja velike te\u017eave pri ulovu plena, predvsem tjulnjev, ki so njihova glavna hrana. Zato stradajo \u017ee v glavni sezoni lova, ko bi se morali rediti, po poro\u010danju tujih tiskovnih agencij ka\u017ee \u0161tudija, ki jo je v \u010detrtek objavila znanstvena revija Science.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\" \/>\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=\"2018-02-02T09:27:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hudo.com\/si\/wp-content\/uploads\/sites\/2\/2018\/02\/profimedia-0005718995.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"833\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"hudo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@hudo_si\" \/>\n<meta name=\"twitter:site\" content=\"@hudo_si\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"hudo\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\"},\"author\":{\"name\":\"hudo\",\"@id\":\"https:\/\/hudo.com\/si\/#\/schema\/person\/601cf3379633985b20f7e50f2bb47707\"},\"headline\":\"Nova prestresljiva \u0161tudija: Severni medvedi stradajo zaradi taljenja arkti\u010dnega ledu\",\"datePublished\":\"2018-02-02T09:27:32+00:00\",\"dateModified\":\"2018-02-02T09:27:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\"},\"wordCount\":383,\"publisher\":{\"@id\":\"https:\/\/hudo.com\/si\/#organization\"},\"keywords\":[\"raziskava\",\"severni medved\",\"ZDA\",\"znanost\"],\"articleSection\":[\"Lifestyle\"],\"inLanguage\":\"sl-SI\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\",\"url\":\"https:\/\/hudo.com\/si\/lifestyle\/nova-prestresljiva-studija-severni-medvedi-stradajo-zaradi-taljenja-arkticnega-ledu\/\",\"name\":\"Nova prestresljiva \u0161tudija: Severni medvedi stradajo zaradi taljenja arkti\u010dnega ledu - 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