Buldir Island AK, 1998

List of Publications [ google scholar ]
*Student authors underlined

  1. Jahid, M., H.N Steeves, J.T. Fisher, S.J. Bonner, S. Muthukumarana. Shooting for abundance: Comparing integrated multi-sampling models for camera trap data. Submitted March 2022.
  2. Steeves, H.N., S. Romonovska, and L.L.E. Cowen. Exploring the robustness of citizen science Golden Eagle data.  Submitted November 2021
  3. Parker, M.R.P, J. Cao, L.L.E. Cowen, and L.T. Elliott. Fast asymptotic solutions for N-mixtures on large populations.  Submitted September, 2021
  4. Parker, M.R.P, L.L.E. Cowen, and L.T. Elliott. Efficiency and precision for hidden population models. In revision January, 2022
  5. Pattison, V., C. Bone, L.L.E. Cowen, P.D. O’Hara, L. Wilson. Investigating characteristics of Ancient Murrelet behaviour during breeding-season foraging trips using hidden Markov models. Submitted April 2022.
  6. Parker, M.R.P, Y. Li, L.T. Elliott, J. Ma, and L.L.E. Cowen. 2021. Under-reporting of COVID-19 in the Northern Health Authority region of British Columbia. Canadian Journal of Statistics, 49: 1018-1038.  CBC Prince George / Daybreak interview here (5 Nov 2021). 
  7. Cai, W., S. Yurchak, D.J. Cole, and L.L.E. Cowen. 2020. Parameter redundancy in Jolly-Seber tag loss models. Ecology and Evolution, 11, 1131-1149. 
  8. Parker, M.R.P., V. Pattison, and L.L.E. Cowen. 2020. Estimating population abundance using counts from an auxiliary population. Environmental and Ecological Statistics, 27, 509-526. 
  9. Gould, L. and L.L.E. Cowen. 2020. Lemur catta in small forest fragments: Which variables best predict population viability? American Journal of Primatology, 82, 1-12.
  10. Malcolm-White, E., C.R. McMahon, and L.L.E. Cowen. 2020. Complete tag loss in capture-recapture studies affects abundance estimates: an elephant seal case study.  Ecology and Evolution, 10,2377–2384.
  11. Parker, M.R., and L.L.E. Cowen. 2019. Estimating population abundance using auxiliary population counts. Proceedings of the Survey Methods Section, Statistical Society of Canada Annual Meeting. 
  12. ​Yang, Y., L.L.E., Cowen, and M. Costa. 2018. Is ocean reflectance acquired by citizen scientists robust for science applications?  Remote Sensing, 10, 1321-1331. 
  13. Cowen, L.L.E., P.T. Besbeas, B.J.T. Morgan, C.J. Schwarz. 2017. Hidden Markov Models for Extended Batch Data. Biometrics, 73, 1321-1331.
  14. Bertram D.F., A. Harfenist, L.L.E. Cowen, D. Koch, M.C. Drever, J.M. Hipfner, and M.J.F. Lemon. 2017. Latitudinal temperature-dependent variation in timing of prey availability can impact Pacific seabird populations in Canada. Canadian Journal of Zoology, 95, 161-167.
  15. van Dam-Bates, P., D.L. Curtis, L.L.E. Cowen, S.F. Cross, and C.M. Pearce. 2016. Assessing movement of the California sea cucumber (Parastichopus californicus) in response to organically-enriched areas typical of aquaculture sites. Aquaculture Environment Interactions, 8, 67-76.
  16. van Dam-Bates, P., M. Fyfe, and L.L.E. Cowen. 2015. Applying open population capture-recapture models to estimate the abundance of injection drug users in Victoria, Canada. Journal of Substance Use, 2, 185-190.
  17. Rigby, P.C., D.M. German, L. Cowen, and M.-A. Storey. 2014. Peer review on open source software projects: parameters and statistical models. ACM Transactions on Embedded Computing Systems, 23,1-33.
  18. Xu, Y., M. Fyfe, L. Walker, and L.L.E. Cowen. 2014. Estimating the number of injection drug users in greater Victoria, Canada using capture-recapture methods. Harm Reduction Journal, 11,9.
  19. Cowen, L.L.E., P. Besbeas, B.J.T. Morgan, C.J. Schwarz. 2014. A comparison of abundance estimates from extended batch-marking and Jolly-Seber type experiments. Ecology and Evolution, 4, 210-218. 
  20. Cowen, L.L.E., W.O. Challenger, and C.J. Schwarz. 2014. What do salmon and injection drug users have in common? Statistical Society of Canada's special issue in Statistics in Action: A Canadian Outlook. J.F. Lawless editor. Chapman and Hall/CRC Press. 269-288.
  21. Xu, Y., L.L.E. Cowen, and C. Gardner. 2014. Group Heterogeneity in the Jolly-Seber-Tag-Loss Model. Statistical Methodology. 17, 3-16. R code
  22. Smith, B.C., Y. Simpson, M. Morshed, L.L.E. Cowen, R. Hof, C. Wetherell, M.J. Boulanger, C.E. Cameron. 2012. Syphilis diagnosis – new proteins for a new perspective.  Journal of Clinical Microbiology, 51, 105-111.
  23. Gonzalez, S. and L. Cowen. 2010. The Jolly-Seber-Tag-Loss Model with group heterogeneity. The Arbutus Review, 1, 30-42.
  24. Exner, H., E.K. Gibson, R. Stone, J. Lindquist, L. Cowen and E.A. Roth, 2010. A mixed methods approach to delineating and understanding injection practices among clientele of a Victoria, British Columbia needle exchange program. Drug and Alcohol Review, 30, 360-365. 
  25. Blight, L.K, T. D. Williams, D. F. Bertram, and L. Cowen.  2010. Interannual variation in egg neglect and incubation routine of the Rhinoceros Auklet (Cerorhinca Monocerata) during the 1998-1999 El Nino/ La Nina events.  Marine Ornithology. 38, 11-15.
  26. Eshghi, A., P. A. Cullen, L. Cowen, and C. E. Cameron. 2009.  Global proteome analysis of Leptospira interrogans cultured in vivo-like media.  Journal of Proteome Research. 8, 4564-4578.
  27. Exner, H., E.K. Gibson, R. Stone, J. Lindquist, L. Cowen and E.A. Roth. 2009.  Worry as a window into the lives of people who use injection drugs: A factor analysis approach.   Harm Reduction Journal, 20, 6-20.
  28. Cowen, L., S. J. Walsh, C. J. Schwarz, N. Cadigan and J. Morgan. 2009.  Estimating exploitation rates of a migrating population of yellowtail flounders using multi-state mark-recapture methods incorporating tag-loss and variable reporting rates.  Canadian Journal of Fisheries and Aquatic Science, 66, 1245-1273. R code
  29. Cowen, L., N. Trouton, and R. E. Bailey.  2007. Effects of angling on Chinook salmon for the Nicola River, British Columbia, 1996-2002.  North American Journal of Fisheries Management, 27, 256-267.
  30. Cowen, L. and C. J. Schwarz. 2006.  The Jolly-Seber model with tag loss.  Biometric. 62, 699-705. R code- (without loss on capture component)
  31. Cowen, L. and C. J. Schwarz. 2005. Capture-recapture studies using radio telemetry with premature radio-tag failure. Biometrics, 61, 657-664. 
  32. Fraser, G. S., I. L. Jones, F. M. Hunter, and L. Cowen. 2004. Mate switching patterns in Crested Auklets (Aethia Cristatella): The role of breeding success and ornamentation. Bird Behavior, 16, 1-6.
  33. Cowen, L. and W. F. Bobier. 2003.  The Pattern of Astigmatism in a Canadian Preschool Population. Investigative Ophthamology and Visual Science, 44, 4593-4600.
  34. Hedd, A., J. L. Ryder, L. Cowen, and D. F. Bertram. 2002. Inter-annual variation in the diet, provisioning, and growth of Cassin's Auklet at Triangle Island, British Columbia: Responses to variation in ocean climate? Marine Ecolology Progress Series, 229, 221-232.
  35. Bertram, D. F., L. Cowen, and A. Burger. 1999. Use of radar for monitoring colonial burrow nesting seabirds. Journal of Field Ornithology, 70, 145-157.

Files: R code for tag loss work linked here including:
- JSTL
- GJSTL
- Flounder
- JS