The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas
Thesis (Master's)--University of Washington, 2014 The Arctic is experiencing dramatic shifts in climate that have led to changes in sea ice distribution, extent, and timing that pose adaptability challenges for Arctic species. Ice obligate species, such as the bearded seal, Erignathus barbatus...
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ftunivwashington:oai:digital.lib.washington.edu:1773/26311 2023-05-15T14:50:15+02:00 The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas MacIntyre, Kalyn Quintin Laidre, Kristin L 2014 application/pdf http://hdl.handle.net/1773/26311 en_US eng MacIntyre_washington_0250O_13254.pdf http://hdl.handle.net/1773/26311 Copyright is held by the individual authors. acoustics bearded seal Beaufort Sea Bering Sea Chukchi Sea sea ice Ecology Climate change fisheries Thesis 2014 ftunivwashington 2023-03-12T18:51:36Z Thesis (Master's)--University of Washington, 2014 The Arctic is experiencing dramatic shifts in climate that have led to changes in sea ice distribution, extent, and timing that pose adaptability challenges for Arctic species. Ice obligate species, such as the bearded seal, Erignathus barbatus , are inherently vulnerable to Arctic warming due to their reliance on seasonal sea ice as a platform for pupping and molting. Bearded seals are a highly vocal pan-Arctic species, in which males produce underwater vocal displays as part of courtship behavior during mating season. Bearded seal vocalizations were once believed to be a spring phenomenon, but results of this study have revealed year-round acoustic activity by bearded seals in the Bering, Chukchi, and Beaufort Seas (BCB). This new insight suggests that passive acoustic monitoring can be employed as an effective method to examine bearded seal distribution, migration patterns, and population structure year-round. This study provides a more complete understanding of bearded seal behavior and ecology through the analysis of year-round passive acoustic data collected in the BCB between 2008 and 2011. The BCB comprises three ecologically distinct bodies of water connected by the currents that flow northward from the Pacific Ocean through the Bering Strait and into the Arctic. The fine- and broad-scale oceanographic and physiographic variability that exists among the BCB may directly or indirectly (through sea ice conditions) affect bearded seal distributions. Analysis of seal vocal presence relative to sea ice distribution helped to clarify the relationships between bearded seal vocal behavior, habitat preferences and sea ice conditions. Regional and recording-site variability in call activity was largely related to sea ice conditions and geography, however oceanographic variability may contribute to the fine-scale variability in call activity that was present between closely located sites. This research provides a contemporary baseline of bearded seal ... Thesis Arctic bearded seal Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Climate change Erignathus barbatus Sea ice University of Washington, Seattle: ResearchWorks Arctic Bering Sea Bering Strait Chukchi Sea Pacific |
institution |
Open Polar |
collection |
University of Washington, Seattle: ResearchWorks |
op_collection_id |
ftunivwashington |
language |
English |
topic |
acoustics bearded seal Beaufort Sea Bering Sea Chukchi Sea sea ice Ecology Climate change fisheries |
spellingShingle |
acoustics bearded seal Beaufort Sea Bering Sea Chukchi Sea sea ice Ecology Climate change fisheries MacIntyre, Kalyn Quintin The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
topic_facet |
acoustics bearded seal Beaufort Sea Bering Sea Chukchi Sea sea ice Ecology Climate change fisheries |
description |
Thesis (Master's)--University of Washington, 2014 The Arctic is experiencing dramatic shifts in climate that have led to changes in sea ice distribution, extent, and timing that pose adaptability challenges for Arctic species. Ice obligate species, such as the bearded seal, Erignathus barbatus , are inherently vulnerable to Arctic warming due to their reliance on seasonal sea ice as a platform for pupping and molting. Bearded seals are a highly vocal pan-Arctic species, in which males produce underwater vocal displays as part of courtship behavior during mating season. Bearded seal vocalizations were once believed to be a spring phenomenon, but results of this study have revealed year-round acoustic activity by bearded seals in the Bering, Chukchi, and Beaufort Seas (BCB). This new insight suggests that passive acoustic monitoring can be employed as an effective method to examine bearded seal distribution, migration patterns, and population structure year-round. This study provides a more complete understanding of bearded seal behavior and ecology through the analysis of year-round passive acoustic data collected in the BCB between 2008 and 2011. The BCB comprises three ecologically distinct bodies of water connected by the currents that flow northward from the Pacific Ocean through the Bering Strait and into the Arctic. The fine- and broad-scale oceanographic and physiographic variability that exists among the BCB may directly or indirectly (through sea ice conditions) affect bearded seal distributions. Analysis of seal vocal presence relative to sea ice distribution helped to clarify the relationships between bearded seal vocal behavior, habitat preferences and sea ice conditions. Regional and recording-site variability in call activity was largely related to sea ice conditions and geography, however oceanographic variability may contribute to the fine-scale variability in call activity that was present between closely located sites. This research provides a contemporary baseline of bearded seal ... |
author2 |
Laidre, Kristin L |
format |
Thesis |
author |
MacIntyre, Kalyn Quintin |
author_facet |
MacIntyre, Kalyn Quintin |
author_sort |
MacIntyre, Kalyn Quintin |
title |
The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
title_short |
The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
title_full |
The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
title_fullStr |
The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
title_full_unstemmed |
The distribution and timing of bearded seal ( Erignathus barbatus ) vocalizations reflect changing environmental conditions in the Bering, Chukchi, and Beaufort Seas |
title_sort |
distribution and timing of bearded seal ( erignathus barbatus ) vocalizations reflect changing environmental conditions in the bering, chukchi, and beaufort seas |
publishDate |
2014 |
url |
http://hdl.handle.net/1773/26311 |
geographic |
Arctic Bering Sea Bering Strait Chukchi Sea Pacific |
geographic_facet |
Arctic Bering Sea Bering Strait Chukchi Sea Pacific |
genre |
Arctic bearded seal Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Climate change Erignathus barbatus Sea ice |
genre_facet |
Arctic bearded seal Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Climate change Erignathus barbatus Sea ice |
op_relation |
MacIntyre_washington_0250O_13254.pdf http://hdl.handle.net/1773/26311 |
op_rights |
Copyright is held by the individual authors. |
_version_ |
1766321283356688384 |