{"id":262344,"date":"2026-02-01T10:24:08","date_gmt":"2026-02-01T10:24:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/262344\/"},"modified":"2026-02-01T10:24:08","modified_gmt":"2026-02-01T10:24:08","slug":"polar-bears-are-in-better-physical-shape-than-25-years-ago-despite-sea-ice-losses","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/262344\/","title":{"rendered":"Polar Bears are in Better Physical Shape than 25 Years Ago, Despite Sea Ice Losses"},"content":{"rendered":"<p>        <img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-228966\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/02\/Arctic-polar-bear-near-Svalbard-by-Trine-Lise-Sviggum-Helgerud-via-SWNS.jpg\" alt=\"\" width=\"1400\" height=\"750\"\/>Arctic polar bear near Svalbard by Trine Lise Sviggum Helgerud via SWNS<\/p>\n<p>Polar bears are in better physical health than they were 25 years ago, despite the decrease in sea ice, reveals new research.<\/p>\n<p>The well-being of the iconic white mammals living around the Norwegian island of Svalbard has improved in the face of climate change, likely due to better opportunities to hunt.<\/p>\n<p>The scientists were \u2018surprised\u2019 that the bears\u2019 fat reserves have increased since the year 2000, even while sea ice levels decreased.<\/p>\n<p>The findings,<a href=\"https:\/\/www.nature.com\/articles\/s41598-025-33227-9\" target=\"_blank\" rel=\"noopener nofollow\"> published in the<\/a> journal Scientific Reports, are in contrast to previous observations of polar bear population declining across the Arctic.<\/p>\n<p>Previous research shows temperature increases in the Barents Sea around Svalbard of up to two degrees Celsius per decade since 1980.<\/p>\n<p>The Barents Sea polar bear population numbered around 2,650 individuals in a 2004 census\u2014and the population appears not to have shrunk in size, although the reasons for that have been unclear.<\/p>\n<p>So, Dr. Jon Aars, senior scientist at the Norwegian Polar Institute, investigated with his colleagues the potential reasons for the stability of the Svalbard populations.<\/p>\n<p>The team used data from 1,188 body measurement records of 770 adult polar bears taken on Svalbard between 1992 and 2019.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-228965\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/02\/Mama-polar-bear-and-cub-by-Trine-Lise-Sviggum-Helgerud-via-SWNS.jpg\" alt=\"\" width=\"1000\" height=\"720\"\/>Svalbard polar bear with cub by Trine Lise Sviggum Helgerud via SWNS<\/p>\n<p>They compared changes in the bears\u2019 body composition index (BCI), an indicator of fat reserves and body condition determined by tape measurement, to the number of ice-free days in the region across the 27-year period.<\/p>\n<p>LOOK: <a title=\"Polar Bear Adopts a Cub That Isn\u2019t her Own \u2013 Extraordinary Behavior Caught on Camera\" href=\"https:\/\/www.goodnewsnetwork.org\/polar-bear-adopts-a-cub-that-isnt-her-own-extraordinary-behavior-caught-on-camera\/\" rel=\"bookmark nofollow noopener\" target=\"_blank\">Polar Bear Adopts a Cub That Isn\u2019t her Own \u2013 Extraordinary Behavior Caught on Camera<\/a><\/p>\n<p>The research team found that although the number of ice-free days increased by around 100 over the study period\u2014at a rate of about four days per year\u2014the mean BCI of the adult polar bears sampled actually increased after the year 2000.<\/p>\n<p>\u201cThis indicates that fat reserves increased as sea ice levels decreased,\u201d <a href=\"https:\/\/npolar.no\/en\/newsarticle\/surprising-findings-on-polar-bear-body-condition\/\" target=\"_blank\" rel=\"noopener nofollow\">said Dr. Aars<\/a>.<\/p>\n<p>The researchers suggest that improvements in the body conditions of Svalbard polar bears could be attributed to the recovery of populations of land-based prey sources\u2014such as reindeer and walrus\u2014that were previously over-exploited by humans.<\/p>\n<p>They also believe that sea ice loss may have lead to a food source, like ringed seals, concentrating on smaller areas of sea ice, which may increase the efficiency of polar bear hunting.<\/p>\n<p>MORE GOOD NEWS FOR POLAR BEARS:<br \/>\u2022 <a title=\"Norway Rewilds Arctic Coal Mining Town in Largest Operation of its Kind, Gives New Hunting Ground for Polar Bears\" href=\"https:\/\/www.goodnewsnetwork.org\/norway-rewilds-arctic-coal-mining-town-in-largest-operation-of-its-kind-gives-new-hunting-ground-for-polar-bears\/\" rel=\"bookmark nofollow noopener\" target=\"_blank\">Norway Rewilds Arctic Coal Mining Town in Largest Operation of its Kind, Gives New Hunting Ground for Polar Bears<\/a><br \/>\u2022 <a title=\"Orphaned Polar Bear That Loved to Hug Arctic Workers Gets New Life\" href=\"https:\/\/www.goodnewsnetwork.org\/orphaned-polar-bear-rescued-russian-arctic\/\" rel=\"bookmark nofollow noopener\" target=\"_blank\">Orphaned Polar Bear That Loved to Hug Arctic Workers Gets New Life<\/a><br \/>\u2022 <a title=\"\u2018Life Finds a Way\u2019: Polar Bears Successfully Adapt Even Without As Much Sea Ice\" href=\"https:\/\/www.goodnewsnetwork.org\/greenland-polar-bears-hunt-on-freshwater-ice-as-adaptation\/\" rel=\"bookmark nofollow noopener\" target=\"_blank\">\u2018Life Finds a Way\u2019: Polar Bears Successfully Adapt Even Without As Much Sea Ice<\/a><\/p>\n<p>But Aars speculated that this trend may be shaky.<\/p>\n<p>\u201cFurther reductions in sea ice may negatively affect the Svalbard populations by increasing the distances they need to travel to access hunting grounds.\u201d<\/p>\n<p>\u201cMore research is needed to understand how different polar bear populations are adapting to a warming Arctic in the future.\u201d<\/p>\n<p>SHARE SOME GOOD NEWS With Polar Bear Lovers On Social Media\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"Arctic polar bear near Svalbard by Trine Lise Sviggum Helgerud via SWNS Polar bears are in better physical&hellip;\n","protected":false},"author":2,"featured_media":262345,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[50,13473,4442,5695,111,139,69,11599,150254,1518,147,406],"class_list":{"0":"post-262344","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-wildlife","8":"tag-animals","9":"tag-arctic","10":"tag-climate","11":"tag-marine-life","12":"tag-new-zealand","13":"tag-newzealand","14":"tag-nz","15":"tag-ocean","16":"tag-positive-trends","17":"tag-research","18":"tag-science","19":"tag-wildlife"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/262344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=262344"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/262344\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/262345"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=262344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=262344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=262344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}