{"id":150047,"date":"2021-10-20T05:00:56","date_gmt":"2021-10-20T15:00:56","guid":{"rendered":"https:\/\/www.hawaii.edu\/news\/?p=150047"},"modified":"2021-10-22T09:45:09","modified_gmt":"2021-10-22T19:45:09","slug":"climate-change-species-extinction","status":"publish","type":"post","link":"https:\/\/www.hawaii.edu\/news\/2021\/10\/20\/climate-change-species-extinction\/","title":{"rendered":"Frozen DNA<\/abbr> shows climate change drove species extinction in the Arctic"},"content":{"rendered":"Reading time: <\/span> 2<\/span> minutes<\/span><\/span>
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A trio of woolly mammoths trudge over snow covered hills. Behind them, mountains with snow covered peaks rise above dark green forests of fir trees. (Photo credit: Daniel Eskridge)<\/figcaption><\/figure>\n

New international research on plant and animal changes over the past 50,000 years suggests that climate change was a primary driver of extinction and reduced diversity in the North.<\/p>\n

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Modern Arctic landscape (Photo credit: Inger Greve Alsos)<\/figcaption><\/figure>\n

“The disappearance of large animals in the Arctic, the so-called ‘charismatic megafauna’ like woolly mammoths, has fascinated scientists for decades,” said co-author David W<\/abbr>. Beilman<\/strong>, professor and undergraduate chair of the Department of Geography and Environment<\/a> in the University of Hawaiʻi<\/span> at M\u0101noa<\/a>\u2019s College of Social Sciences<\/a>. “Using preserved DNA<\/abbr> from frigid lakes and frozen ground, prolonged periods were found—over thousands of years—where megafauna and humans co-existed in the same region, suggesting rapid climate and habitat changes were the primary drivers of large animal extinction.”<\/p>\n

The scientific paper was published on October 20 in Nature<\/em><\/a>, the world\u2019s leading multidisciplinary science journal.<\/p>\n

Fifty researchers from Europe and North America studied changes in ancient DNA<\/abbr> of plants and animals preserved across the Arctic. Cutting-edge technology applied on an unprecedented scale was utilized to better understand sensitive populations and ecosystems, and the impact of climate change.<\/p>\n

Walk from Maui to Molokaʻi<\/span><\/h2>\n
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A selection of the sediment sampled from sites across the Arctic (Photo credit: Yucheng Wang)<\/figcaption><\/figure>\n

What was Hawaiʻi<\/span> like 25,000 years ago during the ice age?<\/p>\n

“There was a glacier cap on Maunakea and the sea level was so low that animals could walk from Maui to Molokaʻi<\/span>,” said Beilman. “That was a period of rapid warming, multiple extinctions and the first migrations of humans across the Arctic.”<\/p>\n

Because polar regions are warming much faster than the global average, Beilman said drastic changes often occur there first, and can be viewed as a preview for what may come elsewhere.<\/p>\n

More research on extinct species: Extinct ground sloth was an omnivore, not vegetarian<\/a><\/p><\/blockquote>\n

“The lesson warns how the reach of climate change extends to all corners of the globe,” he said. “Even those like the Arctic and Antarctic—which we think of as far away from hot, crowded places in the world—are driving climate change today.”<\/p>\n

This work is an example of 糖心视频<\/abbr> M\u0101noa\u2019s goal of Excellence in Research: Advancing the Research and Creative Work Enterprise<\/a> (PDF<\/abbr><\/span>), one of four goals identified in the 2015–25 Strategic Plan<\/a> (PDF<\/abbr><\/span>), updated in December 2020.<\/p>\n","protected":false},"excerpt":{"rendered":"

Climate change contributed to the disappearance of large animals in the Arctic. <\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[98,93,301,38,1467,1363,158,1026,73,9],"class_list":["post-150047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-climate","tag-climate-change","tag-college-of-social-sciences","tag-geography","tag-manoa-excellence-in-research","tag-manoa-research","tag-publication","tag-social-science","tag-sustainability","tag-uh-manoa","entry","has-media"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t