发现新品种的北极熊

in cn •  2 years ago 

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发现新品种的北极熊

地球暖化日益严重,预计2040年之后,北极冻土将会于夏季时消失,北极熊将面临灭绝的危机 ...

科学家在格陵兰冰原发现新品种的北极熊,与一般的北极熊之基因有八九成的相似性,但体型较小,行为模式不同,能于淡水冰上生活,对气候变迁,全球暖化的环境之适应能力较强 ...

目前科学记载,北极熊共有19个品种,新发现的格陵兰小一号北极熊,为第20个品种,约有300头左右 ...

这群北极熊在基因上独树一格,不同于其他的北极熊族群,与一般品种的北极熊族群零互动,单独地栖息在格陵兰岛,能在面积较小的淡水冰上生活 ...

而淡水冰在陆地形成,漂浮在峡湾水面,与一般品种的北极熊在大块海冰上觅食之行为模式不同 ...

所以,当北极冻土消失时,北极熊若是不改习性,仍寻着大块海冰上觅食,有可能因环境改变而灭绝 ...

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  ·  2 years ago  ·  

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