Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A.
Harbor porpoises (Phocoena phocoena) are commonly observed in Oregon's nearshore marine environment yet knowledge of their ecosystem use and behavior remains limited, generating concerns for potential impacts on this species from future coastal development. Passive acoustic monitoring was used...
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ftoregonstate:ir.library.oregonstate.edu:vx021m635 2023-06-11T04:16:00+02:00 Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. Holdman, Amanda K. Haxel, Joseph H. Klinck, Holger Torres, Leigh G. Fisheries and Wildlife Oregon State University. Marine Mammal Institute Oregon State University. Sea Grant College Program https://ir.library.oregonstate.edu/concern/articles/vx021m635 English [eng] eng Wiley Oregon Sea Grant website:: https://seagrant.oregonstate.edu/ https://ir.library.oregonstate.edu/concern/articles/vx021m635 Attribution 4.0 (CC BY 4.0) Harbor porpoise Article ftoregonstate 2023-05-07T17:27:27Z Harbor porpoises (Phocoena phocoena) are commonly observed in Oregon's nearshore marine environment yet knowledge of their ecosystem use and behavior remains limited, generating concerns for potential impacts on this species from future coastal development. Passive acoustic monitoring was used to investigate spatial and temporal variations in the presence and foraging activity of harbor porpoises off the Oregon coast from May through October 2014. Digital monitoring devices (DMONs) were deployed to record acoustic data (320 kHz sample rate) in two neighboring but bathymetrically different locations off the Oregon coast: (1) a site on the 30 m isobath in close proximity (<50 m) to a rocky reef, and (2) a site on the 60 m isobath in an open sandy environment. Data were analyzed with respect to two dynamic cyclic variables: diel and tidal phase. Porpoise presence at the rocky reef site was aligned with the ebb phase of the tidal forcing, while, harbor porpoise presence and foraging at the offshore, sandy bottom site was associated with night‐time foraging. The spatial and temporal patterns identified in this study suggest harbor porpoise habitat use is modulated by specific environmental conditions particular to each site that maximize foraging efficiency. Article in Journal/Newspaper Phocoena phocoena ScholarsArchive@OSU (Oregon State University) |
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English |
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Harbor porpoise |
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Harbor porpoise Holdman, Amanda K. Haxel, Joseph H. Klinck, Holger Torres, Leigh G. Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
topic_facet |
Harbor porpoise |
description |
Harbor porpoises (Phocoena phocoena) are commonly observed in Oregon's nearshore marine environment yet knowledge of their ecosystem use and behavior remains limited, generating concerns for potential impacts on this species from future coastal development. Passive acoustic monitoring was used to investigate spatial and temporal variations in the presence and foraging activity of harbor porpoises off the Oregon coast from May through October 2014. Digital monitoring devices (DMONs) were deployed to record acoustic data (320 kHz sample rate) in two neighboring but bathymetrically different locations off the Oregon coast: (1) a site on the 30 m isobath in close proximity (<50 m) to a rocky reef, and (2) a site on the 60 m isobath in an open sandy environment. Data were analyzed with respect to two dynamic cyclic variables: diel and tidal phase. Porpoise presence at the rocky reef site was aligned with the ebb phase of the tidal forcing, while, harbor porpoise presence and foraging at the offshore, sandy bottom site was associated with night‐time foraging. The spatial and temporal patterns identified in this study suggest harbor porpoise habitat use is modulated by specific environmental conditions particular to each site that maximize foraging efficiency. |
author2 |
Fisheries and Wildlife Oregon State University. Marine Mammal Institute Oregon State University. Sea Grant College Program |
format |
Article in Journal/Newspaper |
author |
Holdman, Amanda K. Haxel, Joseph H. Klinck, Holger Torres, Leigh G. |
author_facet |
Holdman, Amanda K. Haxel, Joseph H. Klinck, Holger Torres, Leigh G. |
author_sort |
Holdman, Amanda K. |
title |
Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
title_short |
Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
title_full |
Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
title_fullStr |
Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
title_full_unstemmed |
Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A. |
title_sort |
acoustic monitoring reveals the times and tides of harbor porpoise (phocoena phocoena) distribution off central oregon, u.s.a. |
publisher |
Wiley |
url |
https://ir.library.oregonstate.edu/concern/articles/vx021m635 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
Oregon Sea Grant website:: https://seagrant.oregonstate.edu/ https://ir.library.oregonstate.edu/concern/articles/vx021m635 |
op_rights |
Attribution 4.0 (CC BY 4.0) |
_version_ |
1768373345151090688 |