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Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring

机译：从长期无源声学监测的阿拉斯加海湾发生鲸类发生

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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.
机译：阿拉斯加海湾是一个不同的海洋哺乳动物阵列的重要栖息地，其中许多人因历史捕鲸而严重耗尽。为研究该地区的当前鲸类分布，被动声监测用于检测2011年和2015年在跨大陆架，坡度和海上海山的五个地点之间的物种特定呼叫类型。检查九种物种的空间和时间检测模式，以比较行为和栖息地使用的差异。 Mysticetes呼吁呼唤喂养和繁殖之间的可能行为转变的季节性增加（Balaenoptera Musculus），鳍（B. Feakyalus）和驼背（兆瓦诺瓦伊格）鲸鱼，以及灰色鲸鱼（Eschrichtius Robustus）的匹配的迁移正时可能。蓝色和鳍鲸叫的际变化可能与2013年开始并持续到监测期结束时的海洋热浪。 Ofontocete检测揭示了独特的空间分布，杀手鲸（Orcinus Orca）最常见的大陆架和精子鲸鱼（Physeter Macrocephalus）在大陆坡上最常见，在陆地上发生检测。喙鲸展示了空间和时间分离：Baird的喙鲸（Berardius Bairdii）在春天的Quinn Seamount在春天的春天海山（Ziphius Cavirostris）在冬天，秋季的大陆坡（Mesoplodon Stejnegeri）的Quinn Seamous 。许多物种的全年存在凸显了阿拉斯加海湾的生态重要性，报告的时空信息应告知未来的保护努力。

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  • 来源
    《Marine biology》 |2021年第5期|72.1-72.29|共29页
  • 作者

    Ally Rice; Ana Širović; Jennifer S. Trickey; Amanda J. Debich; Rachel S. Gottlieb; Sean M. Wiggins; John A. Hildebrand; Simone Baumann-Pickering;

  • 作者单位

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA|Texas A&M University At Galveston 200 Seawolf Parkway Galveston TX 77554 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA|Rosenstiel School for Marine and Atmospheric Science Cooperative Institute for Marine and Atmospheric Studies University of Miami Miami FL 33149 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

    Scripps Institution of Oceanography University of California San Diego La Jolla CA 92093 USA;

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