Changes in sea ice and range expansion of sperm whales in the eclipse sound region of Baffin Bay, Canada

Sperm whales (Physeter macrocephalus) are a cosmopolitan species but are only found in ice-free regions of the ocean. It is unknown how their distribution might change in regions undergoing rapid loss of sea ice and ocean warming like Baffin Bay in the eastern Canadian Arctic. In 2014 and 2018, sperm whales were sighted near Eclipse Sound, Baffin Bay: the first recorded uses of this region by sperm whales. In this study, we investigate the spatiotemporal distribution of sperm whales near Eclipse Sound using visual and acoustic data. We combine several published open-source, data sets to create a map of historical sperm whale presence in the region. We use passive acoustic data from two recording sites between 2015 and 2019 to investigate more recent presence in the region. We also analyze regional trends in sea ice concentration dating back to 1901 and relate acoustic presence of sperm whales to the mean sea ice concentration near the recording sites. We found no records of sperm whale ...抹香鲸（Sperm whales，*Physeter macrocephalus*）是一种广布性海洋物种，但仅分布于无冰海域。目前尚不清楚，在加拿大东部北极的巴芬湾（Baffin Bay）这类正经历海冰快速消退与海洋变暖的区域，其分布格局将发生何种变化。2014年与2018年，研究人员在巴芬湾的日食湾（Eclipse Sound）附近目击到抹香鲸，这是该区域首次有抹香鲸出现的正式记录。本研究依托目视观测与声学探测数据，对日食湾周边海域的抹香鲸时空分布展开研究。我们整合多份已发表的开源数据集，绘制了该区域抹香鲸的历史出现分布图。我们使用2015至2019年间两个监测站点的被动声学数据，探究该区域近期的抹香鲸出现情况。此外，我们还分析了1901年以来的区域海冰浓度变化趋势，并将抹香鲸的声学出现记录与监测站点附近的平均海冰浓度进行关联分析。本研究未发现抹香鲸的相关记录……