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气候变化使北极不适宜候鸟生存钱柜娱乐777手机客户端英文阅读网

作者:www.ruishiye.com  时间:2017-08-03
 
     
      Climate change could make much of the Arctic unsuitable for millions of migratory1 birds that travel north to breed each year, to a new international study published today in Global Change Biology. The University of Queensland School of Biological Sciences' researcher Hannah Wauchope said that suitable breeding conditions for Arctic shorebirds could collapse2 by 2070."This means that countries throughout the world will have fewer migratory birds reaching their shores," Ms Wauchope said.Arctic breeding shorebirds undertake some of the longest known migratory journeys in the animal kingdom, with many travelling more than 20,000 kilometres per year to escape the northern winter.The bar-tailed godwit flies from Alaska to New Zealand in a single flight of 12,000 kilometres without landing.The study predicts that, in a warming world, increasingly restricted to small islands in the Arctic Ocean as they retreat north. declines in hard- change migratory pathways to migrate closer to suitable habitat."Climate change is also opening up the Arctic to threats such as mining and tourism, make sure we protect key places for all Arctic species, including these amazing migratory birds," Ms Wauchope said.UQ's Associate Professor Richard Fuller from the ARC Centre of Excellence3 for Environmental Decisions said most migratory populations followed well-defined migratory routes."This makes shorebirds an excellent group to investigate how climate change might impact breeding grounds and conservation actions that could address these impacts," Associate Professor Fuller said.The research modelled the suitable climate breeding conditions of 24 Arctic shorebirds and projected them to 2070.
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