传统观念认为,广袤的太平洋是陆地鸟类难以逾越的蓝色屏障。不过近年来的科学研究颠覆了这个认知,一些鸻鹬类的鸟类,尤其是斑尾塍鹬,在太平洋的上空经年演绎着他们史诗般的迁徙奇迹。斑尾塍鹬是当之无愧的“空中马拉松冠军”。有卫星追踪的记录显示,它们的最长纪录能够不眠不休地连续飞行超过11天,跨越超过13,000公里的浩瀚大洋。这些让人惊叹的行为背后是他们惊人的生理进化:在迁徙前,它们会大量囤积脂肪,主动“精简”消化器官来减轻迁徙时的负重,践行了科学界中“肠道不飞”的效率法则;同时,他们的飞行肌肉和心脏则会增强,以应对这场极端耐力挑战。这种“破釜沉舟”的生理调整,意味着它们一旦启程就必须成功抵达,否则只有死亡。为了能顺利到达栖息地,它们还拥有复杂的“导航系统”,能综合利用天体、地磁场乃至气象信息。最有意思的是,它们也不是简单地跟着导航直线飞行,借助他们高超的“气象预报”能力,主动选择最佳时机,利用顺风,御风而行,来优化迁徙路线。他们这种极致特化的生存策略也让他们格外脆弱。它们高度依赖如黄海沿岸等少数几个关键中转站补充能量。如今,这些栖息地的丧失正严重威胁其生存。保护这些至关重要的“加油站”,是确保这场生命奇迹得以延续的关键。超级旅行者的迁徙路线。 其中绿色为斑尾塍鹬参考文献The Pacific as the world’s greatest theater of bird migration: Extreme flights spark questions about physiological capabilities, behavior, and theevolution of migratory pathways|DOI:10.1093/ornithology/ukab086Disentangling water transport and tracer mixing mechanisms in mountainous environments influenced by volcanic features| DOI:10.1002/hyp.13733背景音乐Right Here Waiting | Music Travel LoveI Will Always Love You | Michael Bolton & Dolly Parton
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