Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington
Boat and shore-based surveys were conducted from June to August 1991 and June to October 1992 to determine harbor porpoise distribution, density, abundance, and habitat use off the northern San Juan Islands, Washington. An estimated 299 harbor porpoise (1.26 harbor porpoise/km2) occurred patchily wi...
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Moss Landing Marine Laboratories
1995
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Online Access: | https://hdl.handle.net/20.500.12680/7s75dj26r |
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ftcalifstateuniv:oai:scholarworks:7s75dj26r 2024-09-30T14:41:23+00:00 Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington Kimberly L. Raum-Suryan James T. Harvey (Advisor) Jay Barlow (Committee member) William W. Broenkow (Committee member) 1995 https://hdl.handle.net/20.500.12680/7s75dj26r English eng Moss Landing Marine Laboratories San Jose State University http://hdl.handle.net/20.500.12680/7s75dj26r Masters Thesis 1995 ftcalifstateuniv https://doi.org/20.500.12680/7s75dj26r 2024-09-10T17:06:14Z Boat and shore-based surveys were conducted from June to August 1991 and June to October 1992 to determine harbor porpoise distribution, density, abundance, and habitat use off the northern San Juan Islands, Washington. An estimated 299 harbor porpoise (1.26 harbor porpoise/km2) occurred patchily within 237 km2. Harbor porpoise occurred in water of 10.1° to 16.3°, were generally observed in expected depths125 m and over shallow slopes (10%), and less than expected in depths 75 m. Abundance of harbor porpoise in relation to deep waters, flood tides, and tide rips off Point Doughty, Orcas Island, may indicate the importance of these waters as foraging areas. Mean duration of dives for individuals and groups (n = 95) was 6.6 sec (SE = 0.11, n = 1,551) for dives 30 sec and 125 sec (SE = 5.32, n = 156) for dives 30 sec duration. islandora:18007 Master Thesis Phocoena phocoena Scholarworks from California State University San Juan |
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Open Polar |
collection |
Scholarworks from California State University |
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ftcalifstateuniv |
language |
English |
description |
Boat and shore-based surveys were conducted from June to August 1991 and June to October 1992 to determine harbor porpoise distribution, density, abundance, and habitat use off the northern San Juan Islands, Washington. An estimated 299 harbor porpoise (1.26 harbor porpoise/km2) occurred patchily within 237 km2. Harbor porpoise occurred in water of 10.1° to 16.3°, were generally observed in expected depths125 m and over shallow slopes (10%), and less than expected in depths 75 m. Abundance of harbor porpoise in relation to deep waters, flood tides, and tide rips off Point Doughty, Orcas Island, may indicate the importance of these waters as foraging areas. Mean duration of dives for individuals and groups (n = 95) was 6.6 sec (SE = 0.11, n = 1,551) for dives 30 sec and 125 sec (SE = 5.32, n = 156) for dives 30 sec duration. islandora:18007 |
author2 |
James T. Harvey (Advisor) Jay Barlow (Committee member) William W. Broenkow (Committee member) |
format |
Master Thesis |
author |
Kimberly L. Raum-Suryan |
spellingShingle |
Kimberly L. Raum-Suryan Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
author_facet |
Kimberly L. Raum-Suryan |
author_sort |
Kimberly L. Raum-Suryan |
title |
Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
title_short |
Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
title_full |
Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
title_fullStr |
Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
title_full_unstemmed |
Distribution, abundance, habitat use, and respiration patterns of harbor porpoise (Phocoena phocoena) off the northern San Juan Islands, Washington |
title_sort |
distribution, abundance, habitat use, and respiration patterns of harbor porpoise (phocoena phocoena) off the northern san juan islands, washington |
publisher |
Moss Landing Marine Laboratories |
publishDate |
1995 |
url |
https://hdl.handle.net/20.500.12680/7s75dj26r |
geographic |
San Juan |
geographic_facet |
San Juan |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
http://hdl.handle.net/20.500.12680/7s75dj26r |
op_doi |
https://doi.org/20.500.12680/7s75dj26r |
_version_ |
1811643771869200384 |