Long-term trends in harbor seal numbers at Tugidak Island and Nanvak Bay, Alaska

Marine Mammal Science

Volumn 22, Issue 2, 2006, Pages 339-360

  Jemison, Lauri A ^a   Pendleton, Grey W ^a   Wilson, Carol A ^a   Small, Robert J ^a  

^a ALASKA DEPARTMENT OF FISH AND GAME   (United States)

Author keywords

Alaska; Bering Sea; Bristol Bay; Harbor seal; Molting; Nanvak Bay; Phoca vitulina richardii; Population trend; Pupping; Tugidak Island

Indexed keywords

MOLT; PINNIPED; POPULATION DYNAMICS; POPULATION ESTIMATION; TREND ANALYSIS;

ALASKA; NORTH AMERICA; UNITED STATES;

PHOCA; PHOCA VITULINA; PHOCA VITULINA RICHARDII;

EID: 33645334167     PISSN: 08240469     EISSN: 17487692     Source Type: Journal    
DOI: 10.1111/j.1748-7692.2006.00021.x     Document Type: Article

References (50)

1. Adkison M. D. T. J. Quinn II and R. J. Small. 2003. Evaluation of the Alaska harbor seal (Phoca vitulina) population survey: A simulation study. Marine Mammal Science 19 764 790.
2. Allen S. G. D. G. Ainley G. W. Page and C. A. Ribic. 1984. The effect of disturbance on harbor seal haulout patterns at Bolinas Lagoon, California. Fishery Bulletin 82 493 500.
3. Allen S. G. C. A. Ribic and J. E. Kjelmyr. 1988. Herd segregation in harbor seals at Point Reyes, California. California Fish and Game 74 55 59.
4. Boveng P. 1988. Status of the Pacific harbor seal population on the U. S. west coast. National Marine Fisheries Service Administrative Report LJ-88-07. 43 pp. (unpublished). Available from National Marine Mammal Lab, 7600 Sand Point Way, NE, Seattle, WA 98115.
5. Boveng P. L. J. L. Bengston D. E. Withrow J. C. Cesarone M. A. Simpkins K. J. Frost and J. J. Burns. 2003. The abundance of harbor seals in the Gulf of Alaska. Marine Mammal Science 19 111 127.
6. Braham H. W. R. D. Everitt and D. J. Rugh. 1980. Northern sea lion population decline in the Eastern Aleutian Islands. Journal of Wildlife Management 44 25 33.
7. Calambokidis J. B. Taylor S. Carter G. Steiger P. Dawson and L. Antrim. 1987. Distribution and haul-out behavior of harbor seals in Glacier Bay, Alaska. Canadian Journal of Zoology 65 1391 1396.
8. Calkins D. G. E. F. Becker and K. W. Pitcher. 1998. Reduced body size of female Steller sea lions from a declining population in the Gulf of Alaska. Marine Mammal Science 14 232 244.
9. Calkins D. D. C. McAllister K. W. Pitcher and G. W. Pendleton. 1999. Steller sea lion status and trend in Southeast Alaska: 1979-1997. Marine Mammal Science 15 462 477.
10. Daniel R. G. L. A. Jemison G. W. Pendleton and S. M. Crowley. 2003. Molting phenology of harbor seals on Tugidak Island, Alaska. Marine Mammal Science 19 128 140.
11. Doroff A. M. J. A. Estes M. T. Tinker D. M. Burns and T. J. Evans. 2003. Sea otter population declines in the Aleutian Archipelago. Journal of Mammalogy 84 55 64.
12. Fisher H. D. 1952. The status of the harbour seal in British Columbia, with particular reference to the Skeena River. Bulletin of Fisheries Resources Board of Canada No. 93. 58 pp.
13. Fritz L. W. and S. Hinckley. 2005. A critical review of the regime shift - "junk food" - nutritional stress hypothesis for the decline of the western stock of Steller sea lion. Marine Mammal Science 21 476 518.
14. Frost K. J. L. F. Lowry and J. M. Ver Hoef. 1999. Monitoring the trend of harbor seals in Prince William Sound, Alaska, after the Exxon Valdez oil spill. Marine Mammal Science 15 494 506.
15. Godsell J. 1988. Herd formation and haul-out behaviour in harbour seals (Phoca vitulina). Journal of Zoology, London 215 83 98.
16. Grellier K. P. M. Thompson and H. M. Corpe. 1996. The effect of weather conditions on harbour seal (Phoca vitulina) haulout behaviour in the Moray Firth, northeast Scotland. Canadian Journal of Zoology 74 1806 1811.
17. Hansen C. 1982. Report on a census of the pinniped population on Otter Island, June 26, 1981. National Marine Fisheries Service. 12 pp. (unpublished). Available from National Marine Mammal Lab, 7600 Sand Point Way, NE, Seattle, WA 98115.
18. HÄrkÖnen T. K. C. Hårding and S. G. Lunneryd. 1999. Age and sex specific behaviour in harbour seals Phoca vitulina leads to biased estimates of vital population parameters. Journal of Applied Ecology 36 825 841.
19. Harvey J. T. R. F. Brown and B. R. Mate. 1990. Abundance and distribution of harbor seals (Phoca vitulina) in Oregon, 1975-1983. Northwest Naturalist 71 65 71.
20. Hurvich C. M. and C.-L. Tsai. 1989. Regression and time series model selection in small samples. Biometrika 76 297 307.
21. Jefferies S. H. Huber J. Calambokidis and J. Laake. 2003. Trend and status of harbor seals in Washington State: 1978-1999. Journal of Wildlife Management 67 207 218.
22. Jemison L. A. and B. P. Kelly. 2001. Pupping phenology and demography of harbor seals on Tugidak Island, Alaska. Marine Mammal Science 17 585 600.
23. Johnson B. 1976. Studies of the northernmost colonies of Pacific harbor seals, Phoca vitulina richardsi, in the eastern Bering Sea. 67 pp. (unpublished). Available from Alaska Department of Fish and Game, Division of Wildlife Conservation, 525 W. 67th Avenue, Anchorage, AK 99518.
24. Kovacs K. K. Jonas and S. Welke. 1990. Sex and age segregation by Phoca vitulina concolor at haul-out sites during the breeding season in the Passamaquoddy Bay Region, New Brunswick. Marine Mammal Science 6 204 214.
25. Lensink C. J. 1958. Predator investigation and control. Alaska Department of Fish and Game Annual Report No. 10. Juneau, Alaska. pp. 91 104. (unpublished). Available from Alaska Department of Fish and Game, Division of Wildlife Conservation, 525 W. 67th Avenue, Anchorage, AK 99518.
26. Littell R. C. G. A. Milliken W. W. Stroup and R. D. Wolfinger. 1996. SAS system for mixed models. SAS Institute Cary NC.
27. Loughlin T. R. A. S. Perlov and V. A. Vladimirov. 1992. Range-wide survey and estimation of total number of Steller sea lions in 1989. Marine Mammal Science 8 220 239.
28. Mathews E. A. and B. P. Kelly. 1996. Extreme temporal variation in harbor seal (Phoca vitulina richardsi) numbers in Glacier Bay, a glacial fjord in Southeast Alaska. Marine Mammal Science 12 483 489.
29. Mathews E. A. and G. W. Pendleton. 2006. Declines in harbor seal (Phoca vitulina) numbers in Glacier Bay National Park, Alaska, 1992-2002. Marine Mammal Science 22 170 191.
30. McCullagh P. and J. A. Nelder. 1989. Generalized linear models. 2nd edition. Chapman and Hall New York NY.
31. Merrick R. L. M. K. Chumbley and G. V. Byrd. 1997. Diet diversity of Steller sea lions (Eumetopias jubatus) and their population decline in Alaska: A potential relationship. Canadian Journal of Fisheries and Aquatic Science 54 1342 1348.
32. Merrick R. L. T. R. Loughlin and D. G. Calkins. 1987. Decline in abundance of northern sea lions, Eumetopias jubatus, in Alaska, 1956-86. Fishery Bulletin 85 351 365.
33. Moran J. R. 2003. Counting seals; estimating the unseen fraction using a covariate and capture-recapture model. M.S. thesis University of Alaska Fairbanks. 49 pp.
34. Olesiuk P. F. 1999. An assessment of the status of harbour seals (Phoca vitulina) in British Columbia. Canadian Stock Assessment Secretariat Research Document 99/33, Department of Fisheries and Oceans Canada Ottawa Canada. 130 pp.
35. Olesiuk P. M. Bigg and G. Ellis. 1990. Recent trends in the abundance of harbour seals, Phoca vitulina, in British Columbia. Canadian Journal of Fisheries and Aquatic Science 47 992 1003.
36. Pauli B. P. and J. M. Terhune. 1987. Tidal and temporal interactions on harbour seal haul-out patterns. Aquatic Mammals 13 93 95.
37. Pitcher K. W. 1990. Major decline in number of harbor seals, Phoca vitulina richardsi, on Tugidak Island, Gulf of Alaska. Marine Mammal Science 6 121 134.
38. Pitcher K. W. D. C. Calkins and G. W. Pendleton. 1998. Reproductive performances of female Steller sea lions: An energetics-based reproductive strategy? Canadian Journal of Zoology 76 2075 2083.
39. Schneider C. C. and P. M. Payne. 1983. Factors affecting haul-out of harbor seals at a site in southeastern Massachusetts. Journal of Mammalogy 64 518 520.
40. Simpkins M. A. D. E. Withrow J. C. Cesarone and P. L. Boveng. 2003. Stability in the proportion of harbor seals hauled out under locally ideal conditions. Marine Mammal Science 19 791 805.
41. Small R. J. G. W. Pendleton and K. W. Pitcher. 2003. Trends in abundance of Alaska harbor seals, 1983-2001. Marine Mammal Science 19 344 362.
42. Springer A. M. J. A. Estes G. B. van Vliet T. M. Williams D. F. Doak E. M. Danner K. A. Forney and B. Pfister. 2003. Sequential megafaunal collapse in the North Pacific Ocean: An ongoing legacy of industrial whaling? Proceedings of the National Academy of Sciences of the U.S.A. 100 12223 12228.
43. Stewart B. S. 1984. Diurnal hauling patterns of harbor seals at San Miguel Island, California. Journal of Wildlife Management 48 1459 1461.
44. Thompson P. M. M. A. Fedak B. J. McConnell and K. S. Nicholas. 1989. Seasonal and sex-related variation in the activity patterns of common seals (Phoca vitulina). Journal of Applied Ecology 26 521 535.
45. Thompson P. M. D. J. Tollit D. Wood H. Corpe P. Hammond and A. MacKay. 1997. Estimating harbour seal abundance and status in an estuarine habitat in north-east Scotland. Journal of Applied Ecology 34 43 52.
46. Trites A. W. 1992. Northern fur seals: Why have they declined? Aquatic Mammals 18 3 18.
47. Udevitz M. S. 1999. Modeling variability in replicated surveys at aggregation sites. Pages 167 177 in G. W. Garner S. C. Amstrup J. L. Laake B. F. J. Manly L. L. McDonald and D. G. Robertson eds. Marine mammal survey and assessment methods. A. A. Balkema Rotterdam Netherlands.
48. Ver Hoef J. M. and K. J. Frost. 2003. A Bayesian hierarchical model for monitoring harbor seal changes in Prince William Sound. Environmental and Ecological Statistics 10 201 219.
49. Watts P. 1996. The diel hauling-out cycle of harbour seals in an open marine environment: Correlates and constraints. Journal of Zoology, London 240 1 26.
50. York A. E. and P. Kozloff. 1987. On the estimation of numbers of northern fur seal, Callorhinus ursinus, pups born on St. Paul Island, 1980-86. Fishery Bulletin 85 367 375.