As Arctic seas rapidly change with increased ocean temperatures and decreased sea ice extent, traditional Arctic marine mammal distributions may be altered, and typically temperate marine mammal species may shift poleward. Extant and seasonal odontocete species on the continental shelves of the Bering and Chukchi Seas include killer whales (Orcinus orca), sperm whales (Physeter microcephalus), beluga whales (Delphiapterus leucas), harbor porpoises (Phocoena phocoena), and Dall’s porpoises (Phocoenoides dalli). Newly documented, typically temperate odontocete species include Risso’s dolphins (Grampus griseus) and Pacific white-sided dolphins (Lagenorhynchus obliquidens). Until recently, recording constraints limited sampling rates, preventing the acoustic detection of many of these high frequency-producing (> 22 kHz) species in the Arctic seas. Using one of the first long-term datasets to record frequencies up to 50 kHz in these waters, clicks, buzzes, and whistles have been detected, classified, and paired with environmental data to explore which variables best parameterize habitat preference. Typically temperate species were associated temporally with cold Bering Sea Climate Regimes in tandem with negative Pacific Decadal Oscillations. Typically Arctic species’ strongest explanatory variables for distribution were largely species and site specific. Regardless of species, however, the environmental cues (e.g. percent ice cover or zooplankton community structure) marine mammals use for locating viable habitat space are ones that will change as temperatures increase. This 10-year dataset documents the current state and tracks recent dynamics of odontocetes and their habitats along the Pacific Arctic Corridor to contribute to ongoing discussions about future Arctic conditions.

中文翻译：

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白令海海洋哺乳动物声学存在和栖息地偏好的十年

由于北极海域随着海洋温度的升高和海冰范围的减少而迅速变化，传统的北极海洋哺乳动物分布可能会发生变化，通常温带海洋哺乳动物物种可能会向极地转移。白令海和楚科奇海大陆架上现存的季节性齿鲸物种包括虎鲸 (Orcinus orca)、抹香鲸 (Physeter microcephalus)、白鲸 (Delphiapterus leucas)、港湾鼠海豚 (Phocoena phocoena) 和 Dall's porhoides ）。新记录的、典型的温带齿鲸物种包括里索海豚 (Grampus griseus) 和太平洋白边海豚 (Lagenorhynchus obliquidens)。直到最近，记录限制了采样率，阻止了对北极海域中许多产生高频（> 22 kHz）的物种的声学检测。使用第一个长期数据集来记录这些水域中高达 50 kHz 的频率，已检测到咔嗒声、嗡嗡声和口哨声，并将其与环境数据配对，以探索哪些变量最能参数化栖息地偏好。通常，温带物种在时间上与寒冷的白令海气候体制以及负太平洋年代际振荡相关。通常，北极物种对分布的最强解释变量主要是特定于物种和地点的。然而，不管物种如何，海洋哺乳动物用于定位可行栖息地空间的环境线索（例如冰盖百分比或浮游动物群落结构）会随着温度升高而改变。