Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring
Abstract: 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...
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ftcdlib:oai:escholarship.org:ark:/13030/qt46g5p29b 2023-11-05T03:40:41+01:00 Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring Rice, Ally Širović, Ana Trickey, Jennifer S Debich, Amanda J Gottlieb, Rachel S Wiggins, Sean M Hildebrand, John A Baumann-Pickering, Simone 72 2021-05-01 https://escholarship.org/uc/item/46g5p29b unknown eScholarship, University of California qt46g5p29b https://escholarship.org/uc/item/46g5p29b public Marine Biology, vol 168, iss 5 Biological Sciences Ecology Life on Land Environmental Sciences Agricultural and Veterinary Sciences Marine Biology & Hydrobiology Zoology article 2021 ftcdlib 2023-10-09T18:04:56Z Abstract: 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. Article in Journal/Newspaper Balaenoptera musculus Fin whale Megaptera novaeangliae Orca Orcinus orca Physeter macrocephalus Alaska University of California: eScholarship |
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Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Biological Sciences Ecology Life on Land Environmental Sciences Agricultural and Veterinary Sciences Marine Biology & Hydrobiology Zoology |
spellingShingle |
Biological Sciences Ecology Life on Land Environmental Sciences Agricultural and Veterinary Sciences Marine Biology & Hydrobiology Zoology Rice, Ally Širović, Ana Trickey, Jennifer S Debich, Amanda J Gottlieb, Rachel S Wiggins, Sean M Hildebrand, John A Baumann-Pickering, Simone Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
topic_facet |
Biological Sciences Ecology Life on Land Environmental Sciences Agricultural and Veterinary Sciences Marine Biology & Hydrobiology Zoology |
description |
Abstract: 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. |
format |
Article in Journal/Newspaper |
author |
Rice, Ally Širović, Ana Trickey, Jennifer S Debich, Amanda J Gottlieb, Rachel S Wiggins, Sean M Hildebrand, John A Baumann-Pickering, Simone |
author_facet |
Rice, Ally Širović, Ana Trickey, Jennifer S Debich, Amanda J Gottlieb, Rachel S Wiggins, Sean M Hildebrand, John A Baumann-Pickering, Simone |
author_sort |
Rice, Ally |
title |
Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
title_short |
Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
title_full |
Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
title_fullStr |
Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
title_full_unstemmed |
Cetacean occurrence in the Gulf of Alaska from long-term passive acoustic monitoring |
title_sort |
cetacean occurrence in the gulf of alaska from long-term passive acoustic monitoring |
publisher |
eScholarship, University of California |
publishDate |
2021 |
url |
https://escholarship.org/uc/item/46g5p29b |
op_coverage |
72 |
genre |
Balaenoptera musculus Fin whale Megaptera novaeangliae Orca Orcinus orca Physeter macrocephalus Alaska |
genre_facet |
Balaenoptera musculus Fin whale Megaptera novaeangliae Orca Orcinus orca Physeter macrocephalus Alaska |
op_source |
Marine Biology, vol 168, iss 5 |
op_relation |
qt46g5p29b https://escholarship.org/uc/item/46g5p29b |
op_rights |
public |
_version_ |
1781696848782688256 |