Author’s Introductory Comment on “Common Property Resources and the Dynamics of Overexploitation: The Case of the North Pacific Fur Seal”

2018 ◽  
Vol 33 (3) ◽  
pp. 213-215 ◽  
Author(s):  
James E. Wilen
Keyword(s):  
North Pacific ◽  
Common Property ◽  
Common Property Resources ◽  
Introductory Comment ◽  
The North ◽  
Fur Seal ◽  
The North Pacific

scholarly journals The Fur-Seal Herds of the North Pacific

Nature ◽  
1899 ◽  
Vol 60 (1554) ◽  
pp. 354-356
Author(s):  
R. L.
Keyword(s):  
North Pacific ◽  
The North ◽  
Fur Seal ◽  
The North Pacific

The Decline and Fall of the Pribilof Fur Seal (Callorhinus ursinus): A Simulation Study

1989 ◽  
Vol 46 (8) ◽  
pp. 1437-1445 ◽  
Author(s):  
Andrew W. Trites ◽  
Peter A. Larkin
Keyword(s):  
North Pacific ◽  
Survival Rates ◽  
Commercial Fishing ◽  
Juvenile Survival ◽  
Callorhinus Ursinus ◽  
Adult Males ◽  
The North ◽  
Adult Females ◽  
Fur Seal ◽  
The North Pacific

A mathematical model incorporating the basic life history features of the North Pacific fur seal (Callorhinus ursinus) approximated the decline of the Pribilof Islands population by reconstructing pup estimates and counts of adult males over the period 1950 to 1987. Simulation results suggest that commercial female harvesting and a series of poor juvenile survival rates were responsible for causing and maintaining the observed decline in pup production on St. Paul Island from 1956 to 1970. A more recent drop in pup production since 1976 is also attributed to poor juvenile survival, but with the addition of higher natural mortalities of adult females. It appears that the natural mortality of adult females may have increased by 2 to 5% beginning in the mid 1970s. We suspect reductions in the fur seal food base and entanglement-related mortality associated with commercial fishing in the North Pacific are contributing to the current decline, although neither possibility has yet been clearly demonstrated.

scholarly journals The fur seals and fur-seal islands of the North Pacific ocean / By David Starr Jordan, [et al.]

1898 ◽  
Author(s):  
George Archilbald Clark ◽  
David Starr Jordan ◽  
Leonhard Stejneger ◽  
◽  
Keyword(s):  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
The North ◽  
Fur Seals ◽  
Fur Seal ◽  
The North Pacific

scholarly journals The fur seals and fur-seal islands of the North Pacific Ocean.

1898 ◽  
Author(s):  
◽  
George Archilbald Clark ◽  
W. W. Duffield ◽  
David Starr Jordan ◽  
Frederic A. Lucas ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
The North ◽  
Fur Seals ◽  
Fur Seal ◽  
The North Pacific
Sign in / Sign up

Export Citation Format

Share Document