[MARMAM] New Publication: Group characteristics, site fidelity, and photo-identification of harbor porpoises, Phocoena phocoena, in Burrows Pass, Fidalgo Island, Washington

Cindy Elliser cindy.elliser at pacmam.org
Mon Feb 19 09:44:39 PST 2018


Dear Marmam,

 

My co-authors and I are pleased to announce our publication on harbor
porpoises in Marine Mammal Science.

 

Cindy R. Elliser, Katrina H. MacIver, Michelle Green. Group characteristics,
site fidelity, and photo-identification of harbor porpoises, Phocoena
phocoena, in Burrows Pass, Fidalgo Island, Washington.

 

It can be accessed here:
http://onlinelibrary.wiley.com/doi/10.1111/mms.12459/full 

or read-only here: http://rdcu.be/Hl2E
<http://em.rdcu.be/wf/click?upn=KP7O1RED-2BlD0F9LDqGVeSEC2UlCC2PBm9dznSiH83l
E-3D_5yuTeEmu5vDwxTMxV7K7VrbdG4rd4r6e6VdlGpuX30WOGiU-2BaaWty9y0ILenBIv6KFa-2
FKY2f-2BjgHzyhQIf4rqTtn9RlQXupRcOt-2FyvjhZN2AQcwab7QJadPHf-2B0BixJtcUpOFLGnu
fbd6AVfOAMNQ0aR0-2BM8Fe0vmPRIeI8QtGzACpGKmd2dsSbYeOVBAM6byFMSOuxIzWu2-2FnjKe
0mkBUomB6zSY185d0vInu3yySBApv2WBN9984yFpWlhzpQ8C8OwLmY24SkGLAY-2BMN4reQ-3D-3
D> . 

See full abstract below.

 

Questions or requests can be sent to: cindy.elliser at pacmam.org
<mailto:cindy.elliser at pacmam.org> 

 

Best regards,

 

Cindy R. Elliser, PhD

Research Director

Pacific Mammal Research

www.pacmam.org <http://www.pacmam.org> 

 

Abstract: Little is known about harbor porpoises at the individual level or
local group structure. Group characteristics, site fidelity, and
photo-identification of harbor porpoises were investigated off Fidalgo
Island, Washington State. Harbor porpoise presence was affected by season
and rip tide strength (Wald χ2 P < 0.04); calf presence was influenced by
season and tide (Wald χ2 P < 0.0075). Average group size (2.32 ± 1.38, n =
266) was influenced by season, behavior, and calf presence (F7 = 9.71, P <
0.0001, R2 = 0.294). Fifty-three individuals were identified using a matrix
of primary, secondary, and confirmation markings that were stable over
months/years. Over 35% were resighted in more than 1 mo (range 1-7, math
formula = 1.83); 15.1% were seen in more than 1 yr, suggesting some level of
residency. Despite having higher effort, presence and group size were
significantly lower in Summer. Variations in the significance of rip tide
strength and tides relate to calf presence and support other findings that
harbor porpoise population structure is complex and varies at small
spatiotemporal scales and may also vary between populations and habitats.
This study identifies variables affecting group characteristics and
emphasizes the importance of research on local populations of harbor
porpoises.

 

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