scholarly journals Gillnet Passive Acoustic Deterrents: Investigating Inter-Reflector Spacings with a Harbor Porpoise Phocoena phocoena

1998 ◽  
Vol 64 (4) ◽  
pp. 648-649 ◽  
Author(s):  
Koji Nakamura ◽  
Tomonari Akamatsu ◽  
A. David Goodson ◽  
Kenji Kagoshima ◽  
Kenji Shimazaki
Keyword(s):  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Passive Acoustic

Passive acoustic tracking of echolocating harbor porpoise (Phocoena phocoena). I. Fisheries management requirements and biological basis

1997 ◽  
Vol 102 (5) ◽  
pp. 3212-3212
Author(s):  
David C. Potter ◽  
Janeen M. Quintal ◽  
James H. Miller ◽  
Robert Gampert ◽  
Khosrow Lashkari
Keyword(s):  
Fisheries Management ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Acoustic Tracking ◽  
Biological Basis ◽  
Passive Acoustic

Short Note: A Record of Twin Fetuses in a Harbor Porpoise (Phocoena phocoena) Stranded on the Dutch Coast

2014 ◽  
Vol 40 (4) ◽  
pp. 394-397 ◽  
Author(s):  
Lonneke L. IJsseldijk ◽  
Andrea Gröne ◽  
Sjoukje Hiemstra ◽  
Jeroen Hoekendijk ◽  
Lineke Begeman
Keyword(s):  
Short Note ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Dutch Coast

Rehabilitation and Homing Behavior of a Satellite-Tracked Harbor Porpoise (Phocoena phocoena)

2008 ◽  
Vol 34 (1) ◽  
pp. 1-8 ◽  
Author(s):  
David T. Schofield ◽  
Greg Early ◽  
Frederick W. Wenzel ◽  
Keith Matassa ◽  
Cindi Perry ◽  
...  
Keyword(s):  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Homing Behavior

Harbor porpoise (Phocoena phocoena) recovery in the inland waters of Washington: estimates of density and abundance from aerial surveys, 2013–2015

2016 ◽  
Vol 94 (7) ◽  
pp. 505-515 ◽  
Author(s):  
Thomas A. Jefferson ◽  
Mari A. Smultea ◽  
Sarah S. Courbis ◽  
Gregory S. Campbell
Keyword(s):  
Puget Sound ◽  
Distance Sampling ◽  
Line Transect ◽  
Inland Waters ◽  
San Juan ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
San Juan Islands ◽  
Juan De Fuca ◽  
Harbor Porpoises

The harbor porpoise (Phocoena phocoena (L., 1758)) used to be common in Puget Sound, Washington, but virtually disappeared from these waters by the 1970s. We conducted systematic aerial line-transect surveys (17 237 km total effort) for harbor porpoises, with the goal of estimating density and abundance in the inland waters of Washington State. Surveys in Puget Sound occurred throughout the year from 2013 to 2015, and in the Strait of Juan de Fuca and the San Juan Islands (and some adjacent Canadian waters) in April 2015. We used a high-wing, twin-engine Partenavia airplane and four observers (one on each side of the plane, one looking through a belly port, and one recording data). A total of 1063 harbor porpoise groups were sighted. Density and abundance were estimated using conventional distance sampling methods. Analyses were limited to 447 harbor porpoise groups observed during 5708 km of effort during good sighting conditions suitable for line-transect analysis. Harbor porpoises occurred in all regions of the study area, with highest densities around the San Juan Islands and in northern Puget Sound. Overall, estimated abundance for the Washington Inland Waters stock was 11 233 porpoises (CV = 37%, 95% CI = 9 616 – 13 120). This project clearly demonstrated that harbor porpoises have reoccupied waters of Puget Sound and are present there in all seasons. However, the specific reasons for their initial decline and subsequent recovery remain uncertain.

Hearing frequency thresholds of a harbor porpoise (Phocoena phocoena) temporarily affected by a continuous 1.5 kHz tone

2013 ◽  
Vol 134 (3) ◽  
pp. 2286-2292 ◽  
Author(s):  
Ronald A. Kastelein ◽  
Robin Gransier ◽  
Lean Hoek ◽  
Martijn Rambags
Keyword(s):  
Phocoena Phocoena ◽  
Harbor Porpoise

scholarly journals Intrapancreatic accessory spleen in a harbor porpoise (Phocoena phocoena)

2018 ◽  
Vol 80 (4) ◽  
pp. 701-705 ◽  
Author(s):  
Shotaro NAKAGUN ◽  
Josué DÍAZ-DELGADO ◽  
Kátia R. GROCH ◽  
Yoshiyasu KOBAYASHI
Keyword(s):  
Accessory Spleen ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Intrapancreatic Accessory Spleen

DIVING BEHAVIOR AND SWIMMING SPEED OF A FREE-RANGING HARBOR PORPOISE, PHOCOENA PHOCOENA

2000 ◽  
Vol 16 (4) ◽  
pp. 811-814 ◽  
Author(s):  
Seiji Otani ◽  
Yasuhiko Naito ◽  
Akiko Kato ◽  
Akito Kawamura
Keyword(s):  
Swimming Speed ◽  
Diving Behavior ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
Free Ranging
Sign in / Sign up

Export Citation Format

Share Document