Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany.
Helmholtz Institute for Functional Marine Biodiversity, Carl von Ossietzky University Oldenburg, Oldenburg, Germany.
Commun Biol. 2021 Jun 25;4(1):790. doi: 10.1038/s42003-021-02332-6.
Humpback whales are thought to undertake annual migrations between their low latitude breeding grounds and high latitude feeding grounds. However, under specific conditions, humpback whales sometimes change their migratory destination or skip migration overall. Here we document the surprising persistent presence of humpback whales in the Atlantic sector of the Southern Ocean during five years (2011, 2012, 2013, 2017, and 2018) using passive acoustic data. However, in the El Niño years 2015 and 2016, humpback whales were virtually absent. Our data show that humpback whales are systematically present in the Atlantic sector of the Southern Ocean and suggest that these whales are particularly sensitive to climate oscillations which have profound effects on winds, sea ice extent, primary production, and especially krill productivity.
座头鲸被认为每年都会在低纬度繁殖地和高纬度觅食地之间进行迁徙。然而，在特定条件下，座头鲸有时会改变迁徙目的地或完全跳过迁徙。在这里，我们利用被动声学数据记录了在五年（2011、2012、2013、2017 和 2018 年）期间座头鲸在南大洋大西洋扇区持续存在的惊人现象。然而，在厄尔尼诺年 2015 年和 2016 年，座头鲸几乎不存在。我们的数据表明，座头鲸在南大洋大西洋扇区系统地存在，这表明这些鲸鱼对气候波动特别敏感，气候波动对风、海冰范围、初级生产力，特别是磷虾生产力有深远的影响。
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