A data-driven demographic model to explore the decline of the Bathurst caribou herd

Journal of Wildlife Management

Volumn 75, Issue 4, 2011, Pages 883-896

  Boulanger, John ^a   Gunn, Anne ^b   Adamczewski, Jan ^c   Croft, Bruno ^c  

^a Integrated Ecological Research   (Canada)

^b Government of Northwest Territories ^*  (Canada)

^c DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES   (Canada)

Author keywords

Bathurst caribou herd; Caribou management; Demographic model; Deterministic model; Ordinary least squares; Rangifer tarandus groenlandicus; Stochastic model

Indexed keywords

ARCTIC ENVIRONMENT; BREEDING POPULATION; DEER; DEMOGRAPHY; FECUNDITY; POPULATION DECLINE; POPULATION ESTIMATION; STOCHASTICITY; SURVIVAL; WILDLIFE MANAGEMENT;

RANGIFER TARANDUS; RANGIFER TARANDUS GROENLANDICUS;

EID: 79957622504     PISSN: 0022541X     EISSN: 19372817     Source Type: Journal    
DOI: 10.1002/jwmg.108     Document Type: Article

References (54)

1. Adamczewski, J., J. Boulanger, B. Croft, H. D. Cluff, B. Elkin, J. Nishi, A. Kelly, A. D'Hont, and C. Nicolson. 2009. Decline in the Bathurst caribou herd 2006-9: a technical evaluation of field data and modeling. Environment and Renewable Resources, Government of Northwest Territories, Yellowknife, NWT, Canada. 〈http://www.wrrb.ca/node/208〉. Accessed 13 Oct 2010.
2. Bergerud, A. T., S. N. Luttich, and L. Camps. 2008. The return of the caribou to Ungava. Queen's University Press, Montreal, Quebec, Canada.
3. Boyce, M. S. 1977. Population growth with stochastic fluctuations in the life table. Theoretical Population Biology 12:366-373.
4. Buckland, S. T., K. B. Newman, L. Thomas, and N. B. Koesters. 2004. State-space models for the dynamics of wild animal populations. Ecological Modelling 171:157-175.
5. Burnham, K. P., and D. R. Anderson. 1998. Model selection and inference: a practical information theoretic approach. Springer, New York, New York, USA.
6. Burnham, K. P., D. R. Anderson, G. C. White, C. Brownie, and K. H. Pollock. 1987. Design and analysis methods for fish survival experiments based on release-recapture. Volume 5. American Fisheries Society, Bethesda, Maryland, USA.
7. Caswell, H. 1989. Matrix population models. Sinauer, Sunderland, Massachusetts, USA.
8. Coulson, T., J. M. Gaillard, and M. Festa-Bianchet. 2005. Decomposing the variation in population growth into contributions from multiple demographic rates. Journal of Animal Ecology 74:789-901.
9. Crete, M. S., S. Couturier, J. Hearn, and T. E. Chubbs. 1996. Relative contribution of decreased productivity and survival to recent changes in the demographic trend of the George River herd. Rangifer 9:27-36.
10. Eberhardt, L. L., and K. W. Pitcher. 1992. A further analysis of Nelchina caribou and wolf data. Wildlife Society Bulletin 20:285-395.
11. Ecosystem Classification Group. 2009. Ecological regions of the Northwest Territories-Taiga Plains. Department of Environment and Natural Resources, Government of Northwest, Territories, Yellowknife, NWT, Canada. 〈http://www.enr.gov.nt.ca/-live/documents/content/Taiga-Plains-Report-2009- high-res.pdf〉. Accessed 13 Oct 2010.
12. Fancy, S. G., K. R. Whitten, and D. E. Russell. 1994. Demography of the Porcupine caribou herd 1983-1992. Canadian Journal of Zoology 72:840-846.
13. Gaillard, J. M., M. Festa-Bianchet, and N. G. Yoccoz. 1998. Population dynamics of large herbivores: variable recruitment with constant adult survival. Trends in Evolution and Ecology 13:58-63.
14. Gamble, R. L. 1984. A preliminary study of the native harvest of widlife in the Keewatin Region, Northwest Territories. Canadian Technical Report of Fisheries and Aquatic Sciences No. 1282, Department of Fisheries and Oceans, Winnipeg, Manitoba. 〈http://www.dfo-mpo.gc.ca/Library/17580.pdf〉. Accessed 13 Oct 2010.
15. Gerhart, K. L., R. G. White, R. D. Cameron, D. E. Russell, and D. van der Wetering. 1997. Pregnancy rate as an indicator of the nutritional status in Rangifer: implications of lactational infertility. Rangifer 17:21-24. (Pubitemid 127071395)
16. Gordon, B. 2003. Rangifer and man: an ancient relationship. Rangifer Special Issue 14:15-28.
17. Gordon, B. 2005. 8000 years of caribou and human seasonal migration. Rangifer Special Issue 16:155-162.
18. Gunn, A., J. Boulanger, and J. Williams. 2005a. Calf survival and adult sex ratio in the Bathurst Herd of barren ground caribou 2001-2004. Manuscript report No. 163, Department of Resources, Wildlife and Economic Development, Government of the Northwest Territories, Yellowknife, NWT. Available at: http://www.enr.gov.nt.ca/-live/documents/content/calf-survival.pdf (accessed on 13 Oct 2010).
19. Gunn, A., J. Nishi, J. Boulanger, and J. Williams. 2005b. An estimate of breeding females in the Bathurst Herd of the barren-ground caribou, June 2003. Department of Environment and Natural Resources, Government of Northwest Territories, Yellowknife, NWT. 〈http://www.enr.gov.nt.ca/-live/documents/ content/164.pdf〉. Accessed 13 Oct 2010.
20. Gunn, A., A. D'Hont, J. Williams, and J. Boulanger. 2008. Satellite collaring in the Bathurst Herd of barren ground caribou 1996-2005. Wildlife and Fisheries Division, Wildlife, Resources and Economic Development, Government of Northwest Territories, Yellowknife, NWT. 〈http://www.wrrb.ca/node/ 517〉. Accessed 13 Oct 2010.
21. Harris, N. C., M. J. Kauffman, and L. S. Mills. 2007. Inferences about ungulate population dynamics derived from age ratios. Journal of Wildlife Management 72:1143-1151.
22. Haskell, S. P., and W. B. Ballard. 2007. Modeling the Western Arctic caribou herd during a positive growth phase: potential effects of wolves and radio collars. Journal of Wildlife Management 71:619-627.
23. Heard, D. C., and J. Williams. 1991. Bathurst calving ground survey, June 1986. Government of Northwest Territories, Yellowknife, Northwest Territories, Canada.
24. Hestbeck, J. B., J. D. Nichols, and R. A. Malecki. 1991. Estimates of movement and site fidelity using mark-resight data of wintering Canada geese. Ecology 72:523-533.
25. Hudson, D. J. 1966. Fitting segmented curves whose join points have to be estimated. Journal of American Statistical Association 61:1097-1129.
26. Jenkins, K. J., and N. L. Barten. 2005. Demography and decline of the Mentasta caribou herd in Alaska. Canadian Journal of Zoology 83:1174-1188.
27. Koons, D. N., R. F. Rockwell, and J. B. Grand. 2006. Population momentum: implications for wildlife management. Journal of Wildlife Management 70:19-26.
28. Lierman, M., and R. Hillborn. 2001. Depensation: evidence, models, and implications. Fish and Fisheries 2:33-58.
29. Lubow, B., and B. L. Smith. 2004. Dynamics of the Jackson elk herd. Journal of Wildlife Management 68:810-829.
30. Manly, B. F. J. 1997. Randomization and Monte Carlo methods in biology. 2nd edition. Chapman and Hall, New York, New York, USA.
31. McCullough, P., and J. A. Nelder. 1989. Generalized linear models. Volume 2. Chapman and Hall, New York, New York, USA.
32. Milliken, G. A., and D. E. Johnson. 2002. Analysis of messy data, Volume III: Analysis of covariance. Chapman and Hall, New York, New York, USA.
33. Mullon, C., P. Freon, and P. Cury. 2005. The dynamics of collapse in world fisheries. Fish and Fisheries 6:111-120. (Pubitemid 40962681)
34. Mysterud, A., T. Coulson, and N. C. Stenseth. 2002. The role of males in the dynamics of ungulate populations. Journal of Animal Ecology 71:907-915.
35. Nishi, J., B. Croft, J. Williams, J. Boulanger, and D. Johnson. 2007. An estimate of breeding females in the Bathurst herd of barren ground caribou, June 2006. File report no 137, Department of Environment and Natural Resources, Government of Northwest Territories, Yellowknife, NWT. 〈http://www.enr.gov. nt.ca/-live/documents/content/137.pdf〉. Accessed 13 Oct 2010.
36. Nishi, J., B. Croft, J. Boulanger, and J. Adamczewski. 2010. An estimate of breeding females in the Bathurst herd of barren ground caribou, June 2009. Environment and Natural Resources, Government of Northwest Territories. 〈http://www.wrrb.ca/node/527〉. Accessed 13 Oct 2010.
37. Pollock, K. H., C. M. Bunck, S. R. Winterstein, and C. L. Chen. 1995. A capture-recapture survival analysis model for radio-tagged animals. Journal of Applied Statistics 22:661-672.
38. SAS Institute. 2009. Version 9.2 users manual. The SAS Institute, Cary, North Carolina, USA.
39. Stephens, M. A. 1974. EDF statistics for goodness of fit and some comparisons. Journal of the American Statistical Association 69:730-737.
40. Taylor, M. C., and L. S. Carley. 1988. Life table analysis of age structured populations in seasonal environments. Journal of Wildlife Management 52:366-373.
41. Taylor, M., M. Obbard, B. Pond, M. Kuc, and D. Abraham. 2003. RISKMAN: stochastic and deterministic population modeling risk management for harvested and unharvested populations. Ontario Ministry of Natural Resources, Peterborough, Ontario, Canada.
42. Thomas, D. C., and H. P. Kiliaan. 1998. Fire-caribou relationships: (II) Fecundity and physical condition of the Beverly herd. Canadian Wildlife Service Technical Report No. 310, Edmonton Alberta, Canada.
43. Thomas, D. C., S. J. Barry, and H. P. Kiliaan. 1989. Fetal sex ratios in caribou: maternal age and condition effects. Journal of Wildlife Management 53:885-890.
44. Thompson, W. L., G. C. White, and C. Gowan. 1998. Monitoring vertebrate populations. Academic Press, San Diego, California, USA.
45. Vors, L. S., and M. S. Boyce. 2009. Global declines of caribou and reindeer. Global Change Biology 15:2626-2633.
46. Walsh, N. E., B. Griffith, and T. R. McCabe. 1995. Evaluating growth of the Porcupine caribou herd using a stochastic model. Journal of Wildlife Management 59:262-272.
47. Walters, C. J. 1986. Adaptive management of renewable resources. McMillian, New York, New York, USA.
48. White, G. C. 2000. Population viability analysis: data requirements and essential analyses. Pages 289-331 in L. Boitani and T. K. Fuller, editors, Research techniques in animal ecology: controversies and consequences. Columbia University Press, New York, New York, USA.
49. White, G. C., and K. P. Burnham. 1999. Program MARK: survival estimation from populations of marked animals. Bird Study Supplement 46:120-138.
50. White, G. C., and B. Lubow. 2002. Fitting population models to multiple sources of observed data. Journal of Wildlife Management 66:300-309.
51. White, G. C., K. P. Burnham, and D. R. Anderson. 2002. Advanced features of program MARK. Pages 368-377 in R. Fields, R.J. Warren, H. Okarma, and P.R. Seivert, editors. Integrating People and Wildlife for a Sustainable Future: Proceedings of the Second International Wildlife Management Congress. Gödölló, Hungary.
52. White, G. C., W. L. Kendall, and R. Barker. 2006. Multistate models and their extensions in Program MARK. Journal of Wildlife Management 70:1521-1529. (Pubitemid 46214488)
53. Williams, B. K., J. D. Nichols, and M. J. Conroy. 2002. Analysis and management of animal populations. Academic Press, San Diego, California, USA.
54. Zalatan, R., A. Gunn, and G. H. R. Henry. 2006. Long-term abundance patterns of barren-ground caribou using trampling scars on roots of Picea mariana in Northwest Territories, Canada. Arctic, Antarctic, and Alpine Research 38:624-630. (Pubitemid 44893769)