The Gulf of Alaska is an important habitat for a diverse array of marine mammals, many of which were severely depleted by historical whaling. To study current cetacean distributions in this region, passive acoustic monitoring was used to detect species-specific call types between 2011 and 2015 at five locations spanning the continental shelf, slope, and offshore seamounts. Spatial and temporal detection patterns were examined for nine species to compare differences in behavior and habitat use. Mysticetes showed seasonal increases in calling that indicated possible behavioral shifts between feeding and breeding in blue (Balaenoptera musculus), fin (B. physalus), and humpback (Megaptera novaeangliae) whales, and matched known migration timing of gray whales (Eschrichtius robustus). Interannual changes in blue and fin whale calling may relate to the marine heat wave that began in 2013 and lasted through the end of the monitoring period. Odontocete detections revealed unique spatial distributions, with killer whales (Orcinus orca) most common on the continental shelf and sperm whales (Physeter macrocephalus) most common on the continental slope, where detections occurred year-round. Beaked whales showed both spatial and temporal separation: Baird’s beaked whale (Berardius bairdii) detections were highest at Quinn Seamount in the spring, Cuvier’s (Ziphius cavirostris) at Pratt Seamount in winter, and Stejneger’s (Mesoplodon stejnegeri) on the continental slope in the fall. The year-round presence of many species highlights the ecological importance of the Gulf of Alaska and the spatiotemporal information reported here should inform future conservation efforts.

阿拉斯加湾是各种海洋哺乳动物的重要栖息地，其中许多被历史捕鲸活动严重消耗。为了研究该地区当前的鲸类分布，被动声监测被用于检测2011年至2015年之间跨大陆架，斜坡和近海海山的五个位置的特定物种的呼声类型。检查了九种物种的时空检测模式，以比较行为和栖息地使用方面的差异。Mysticetes的鸣叫随季节增加，表明蓝鲸（Balaenoptera musculus），鳍（B. physalus）和座头鲸（Megaptera novaeangliae）的取食与繁殖之间可能发生行为转变，并与已知的灰鲸迁徙时间相吻合。Eschrichtiusrobustus）。蓝鲸和长须鲸的年际变化可能与2013年开始并持续到监测期末的海洋热浪有关。齿don科动物的发现显示出独特的空间分布，其中陆架上最常见的是虎鲸（Orcinus orca），而陆上斜坡上最常出现的则是抹香鲸（Physeter macrocephalus）。喙鲸表现出空间和时间上的分离：贝尔德喙鲸（Berardius bairdii）的检出率最高，春季是奎因海山，冬季是普拉特海山的居维叶（Ziphius cavirostris），冬季是斯特伊内格（Mesoplodon stejnegeri））在秋天的大陆坡上。全年存在的许多物种突出了阿拉斯加湾的生态重要性，此处报告的时空信息应为将来的保护工作提供参考。