PUBLICATIONS: RUTH JOY

Refereed Journal Publications:

• Chatwin, T.A., R. Joy, A.E. Burger. In press. Set-back distances to protect nesting and roosting seabirds off Vancouver Island from boat disturbance. Waterbirds. 36 (1): XXX-XXX.


• Fahlman, A., S.H. Loring, M. Ferrigno, C.Moore, G. Early, M. Niemeyer, B. Lentell, F. Wentell, R. Joy, M. Moore. 2011. Inflation and deflation pressure-volume loops in breath-hold diving marine mammals. Journal of Experimental Biology. 214: 3822-3828.


• Dowd, M., and R. Joy. 2011. Estimating behavioural parameters in animal movement models using a state-augmented particle filter. Ecology. 92: 568-575.


• Svard C., A. Fahlman, D.A.S. Rosen, R. Joy, A.W. Trites. 2009. Fasting affects the surface and diving metabolic rates of Steller sea lions (Eumetopias jubatus). Aquatic Biology. 8: 71-82.


• Joy R., E.F. Druyts, E.K. Brandson, V.D. Lima, C.A. Rustad, W. Zhang, E. Wood, J.S.G. Montaner, R.S. Hogg. 2008. Impact of neighborhood-level socioeconomic status on HIV disease progression in a universal health care setting. Journal of AIDS. 47 (4): 500-505.


• Harris M, R. Joy, G. Larsen, M. Valyi, E. Walker, LW Frick, R.M. Palmatier, S.A. Wring, J.S. Montaner. 2006. Enfuvirtide plasma levels and injection site reactions using a needle-free gas-powered injection system (Biojector). AIDS. 20(5):719-723.


• Palepu, A., M.W. Tyndall, R. Joy, T. Kerr, E. Wood, N. Press, R.S. Hogg, J.S. Montaner. 2006. Antiretroviral adherence and HIV treatment outcomes among HIV/HCV co-infected injection drug users: the role of methadone maintenance therapy. Drug and Alcohol Dependence. 84(2):188-194.


• Moore, D., R. Copes, R. Fisk, R. Joy, K.Chan, and M. Brauer. 2005. Population health effects of air quality changes due to forest fires in British Columbia in 2003: Estimates from physician-visit billing data. Canadian Journal of Public Health, 97(2):105-8.


• Trites, A.W. and R. Joy. 2005. Dietary analysis from fecal samples: How many scats are enough? Journal of Mammology 86(44), 704-712.


• Tollit, D.J., S.G. Heaslip, T.K. Zeppelin, R. Joy, K.A. Call, and A.W. Trites. 2004. A method to improve size estimates of walleye pollock and Atka mackerel consumed by pinnipeds using digestion correction factors applied to bones and otoliths recovered in scats. Fishery Bulletin, 102(3) 498-508.


• von Dadelszen, P., S. Kives, M.F. Delisle, R.D. Wilson, R. Joy, L. Ainsworth, L.A. Kharusi, M. Oskamp, J.F.R. Barrett, G. Ryan, D. Farine, P.G.R. Seaward. 2003. Evaluation of predictors of latency, clinical chorioamnionitis, postpartum fever and neonatal infection in twin pregnancies complicated by preterm prelabor rupture of membranes. Twin Research 6(4): 257-262.


• Buchanan, S., J. Fraser, T. Farrell, P. Gallaugher, R. Joy, and R. Routledge. 2002. Reducing gillnet mortality of incidentally caught coho salmon. North American Journal of Fisheries Management, 22: 1270-1275.


• van den Driessche, R., S.D. McConnell and T.D. Hooper. 1994. First confirmed breeding record for Upland Sandpiper, Bartramia longicauda, in British Columbia. Canadian Field Naturalist 108: 89-91.


• McConnell, S.D., R. van den Driessche, T.D. Hooper, A. Roberts and G. Roberts. 1993. First sight and breeding record of Sprague's Pipit, Anthus spragueii, in British Columbia. Canadian Field Naturalist. 107: 222-223.

Other Refereed Publications:

• Trites, A.W., R. Flinn, R. Joy, B. Battaile. 2010. Was the decline of Steller Sea lions in the Aleutian Islands from 2000 - 2009 related to the Atka mackerel fishery. Fisheries Centre, UBC Working Paper Series #2010-10.


• Joy, R., and J. Muir. 2009. Hybrid spatial approach for the estimation of a perimeter monitoring line in Report of the small specialist workshop to determine the perimeter monitoring line, IUCN Headquarters, Gland, 23-26 October 2009.


• Joy, R., D. Tollit, J. Laake and A.W. Trites. Using Feeding Trials and Computer Simulations to assess error and bias in scat analysis. In A.W. Trites, S. Atkinson, D.P. DeMaster, L.W. Fritz, T.S. Gelatt, L.D. Rea and K. Wynne (eds), Sea Lions of the World. Alaska Sea Grant College Program, University of Alaska, Fairbanks. pp. 205-222.


• Hay, D.E., P.B. McCarter, R. Joy, M. Thompson, and K. West. 2002. Fraser River Eulachon Biomass Assessments and Spawning Distribution: 1995-2002. Canadian Science Advisory Secretariat Research Document - 2002/117. 58pp.


• van den Driessche, R., M. Mather, and T.A. Chatwin. 2001. Habitat Selection by bats in temperate old-growth forests, Clayoquot Sound, British Columbia. Proceedings of the Species and Habitats at Risk Conference. February 15-18, 1999. Ministry of Environment, Lands and Parks.


• Chatwin, T.A. and R. van den Driessche. 1996. Long-term effects of prescribed fire in a grassland ecosystem of central British Columbia. Proceedings of the 61st North American Wildlife and Natural Resources Conference, Tulsa, Oklahoma.

Government Reports:

• Gauvin, J., R. Joy, et al. 2011. Application for an exempted fishing permit (EFP) to continue research on ways to reduce halibut bycatch mortality rates on Amendment 80 vessels through modifications to fishing practices and catch handling procedures. Final Report to Alaska Region, National Fisheries Marine Services. pgs 1-67.


• Tollit D.J., J.D. Wood, S. Veirs, S. Berta, H. Garrett, V. Veirs, R. Joy, N. Quick, and G. Hastie. 2010. Admiralty Inlet Pilot Project Marine Mammal Pre-Installation Field Studies. Final Report to Snohomish Public Utility District, pgs 1-63.


• Chatwin, T.A., T. Dunlop and R. Joy, 2009. Pacific Great Blue Heron Population and Monitoring, Vancouver Island and the Gulf Islands in 2007 and 2008. Heron Working Group Document #3.


• Chatwin, T.A., L. Corteze and R. Joy, 2007. Pacific Great Blue Heron Population and Monitoring, Vancouver Island and the Gulf Islands in 2006. Heron Working Group Document #1.


• van den Driessche, R., M. Mather, L. Crampton and T. Chatwin. 1998. An inventory of bats in Clayoquot Sound, Vancouver, BC. Ministry of Environment Working Report.


• Joy,. J.B., and R. van den Driessche. 1998. Donna Creek Forestry Biodiversity Project: Habitat use of cavity nesting birds in the Donna Creek study area. Peace/Williston Fish and Wildlife Compensation Program Report. Working Report #54.


• van den Driessche, R., M. Mather, L. Crampton, T. Chatwin. 1997. An inventory of bats in Clayoquot Sound, Vancouver Island, British Columbia. Ministry of Environment Working Report #PA-96-488-IN.


• Joy, J.B., R. van den Driessche, and S.D. McConnell. 1995. Population and habitat inventory of White-headed Woodpeckers in South Okanagan, BC Ministry of Environment, Lands and Parks. Technical Report. 26 pp. Plus appendices.


• van den Driessche, R. and T. Ethier. (eds.) 1997. Standardized inventory manual for components of British Columbia's Biodiversity (Vs 1.1): Small Mammals. Resources Inventory Committee, Ministry of Environment, Lands and Parks, Victoria, BC.


• van den Driessche, R. and T. Ethier. (eds.) 1997. Standardized inventory manual for components of British Columbia's Biodiversity (Vs 1.1): Macrofungi including the phyla Ascomycota and Basidiomycota. Resources Inventory Committee, Ministry of Environment, Lands and Parks, Victoria, BC.


• Ethier, T. and R. van den Driessche. (eds.) 1997. Standardized inventory manual for components of British Columbia's Biodiversity (Vs 1.1): Terrestrial Arthropods. Resources Inventory Committee, Ministry of Environment, Lands and Parks, Victoria, BC.

Conference Presentations:

• Trites, A.W., R. Flinn, R. Joy, B. Battaile. Is fishing for Atka mackerel responsible for the decline of Steller sea lions in the western and central Aleutian Islands? 19th Conference of the Society for Marine Mammals, Tampa, Florida, November 2011.


• Hui, T. R. Flinn, E.J. Gregr, R. Joy and A.W. Trites. Steller sea lions and fisheries: Competition at sea? 19th Conference of the Society for Marine Mammals, Tampa, Florida, November 2011.


• Joy, R., M.G. Dowd, and R. Routledge. Applying State Space Methods to Northern Fur Seal foraging data. Winter 2011 SFU-UBC Joint Graduate Student Workshop in Statistics. Vancouver, BC, Canada.


• Joy, R., M.Dowd, P. Lestenkof, B.Battaile, A. Trites. Identifying foraging habitat of lactating northern fur seals and the spatial overlap with commercial fisheries in the Eastern Bering Sea. Fourth International Science Symposium on Bio-logging. 2011 Hobart, Australia.


• A.W. Trites, R. Flinn, R. Joy, B. Battaile. 2011. Steller sea lion trends from 2000 to 2009 were not associated with Atka mackerel fishery indices in the western and central Aleutian Islands. Marine Science in Alaska Symposium. January 2011. Anchorage, Alaska.


• Joy, R.. Estimating parameters in State Space Models. UBC Quantitative Fisheries Seminar Series, September, 2010.


• Trites, A.W., I. Takeomi, S. Brunner, R. Joy. Changes in Steller Sea Lion Skull Sizes: Testing the Nutritional Stress Hypotheses. Canadian Society of Zoologists. May 17-21, 2010. Vancouver, BC, Canada.


• Joy, R.Joy, R. M.Dowd. Analysis of marine animal movement data using state space models for behavioural inference. 2010 Ocean Sciences Meeting. February 2010. Portland, Oregon.


• Joy, R., M. Dowd, J. Flemming, and P. Lestenkof. Making Sense of Northern Fur Dead Reckoner Tag Data. BC Marine Mammal Symposium, November, 2010, Vancouver, Canada.


• Hui, T.C.Y., R. Flinn, E.J. Gregr, R. Joy and A.W. Trites. Are there any hungry sea lions out there? Alaska Marine Science Symposium, Anchorage, Alaska. January, 2010.


• Hui, T.C.Y., R. Flinn, E.J. Gregr, R. Joy and A.W. Trites. Are Steller sea lions (Eumetopias jubatus) affected by prey abundance in the western Gulf of Alaska and Aleutian Islands? North Pacific Marine Science Organization Conference (PICES) Jeju, Korea 2009, and the Society for Marine Mammalogy Conference, Québec City, Canada, 2009.


• Flinn, R., E.J. Gregr, R. Joy, A.W. Trites. Using dynamic descriptions of prey distributions to evaluate Steller sea lion critical habitat. 18th Society for Marine Mammalogy Conference, Quebec City, Canada, 2009, and Alaska Marine Science Symposium, Anchorage, Alaska. 2010.


• Allen, P., A. W. Trites, R. Joy, D. Rosen, R. van Schie, L. Mazzaro, H. Katsumata, T. Yamamoto. Tis the Season for Steller Sea Lions: Seasonal oscillations in the growth and food intake of Steller sea lions. 18th Society for Marine Mammalogy Conference, Québec City, Canada, 2009.


• Trites, A. W., T. Isono, S. Brunner, R. Joy. Changes in Steller Sea Lion Skull Sizes: Testing the Nutritional Stress Hypotheses. 18th Society for Marine Mammalogy Conference, Québec City, Canada, 2009..


• Joy, R., R., M. Dowd, J. Flemming, and P. Lestenkof. Statistical Analysis of Marine Animal Tracking Data. MITACS Spatial Ecology Workshop. February 23-24, 2009, Halifax, Canada.


• Flinn, R., E.J. Gregr, R. Joy, A.W. Trites. 2009. Using dynamic descriptions of prey distributions to evaluate Steller sea lion critical habitat. Marine Science Symposium, Anchorage, Alaska. January 19-23, 2009.


• Joy, R.. The decline of the Steller sea lion: Challenges to addressing a dramatic signal in the dynamics of a marine ecosystem. The International Environmetrics Society Meeting. June 8-13, 2008. Kelowna, Canada.


• C. Svard, A. Fahlman, R. Joy, D.A.S. Rosen, A.W. Trites. Effect of fasting on resting and diving metabolic rate in Steller sea lions (Eumetopias jubatus). Conference on Experimental Biology, San Diego, California. April 5-8, 2008.


• Hogg, R., R. Joy, et al. Impact of social determinants of health on disease progression among persons initiating HAART in a universal health care setting. 11th International Workshop on HIV Observational Databases, March 22-25, 2007. Monte Carlo, Monaco.


• S. Guillemi, R. Harrigan, B. Yip, R. Joy, D. Dixon, M. Bath, L. Nicol, J. Montaner. Exploring the impact of therapeutic drug monitoring (TDM) in patients receiving atazanavir-ritonavir (ATV/r) boosted regimens. 4th IAS Conference on HIV Pathogenesis, Treatment and Prevention 22-25 July 2007, Sydney, Australia.


• Hull, M., M. Harris, R. Joy, R. Harrigan, J. Montaner. Effect on plasma levels of lopinavir of switching from high dose lopinavir/ritonavir soft gel capsules (SGC) to tablet formulation. 4th IAS Conference on HIV Pathogenesis, Treatment and Prevention, July 22-25, 2007, Sydney, Australia.


• Harris, M., M. Hull, R. Joy, R. Harrigan, J. Montaner. Effect on plasma levels of lopinavir of switching from high dose lopinavir/ritonavir soft gel capsules (SGC) to tablet formulation.8th International Workshop on Clinical Pharmacology of HIV Therapy, April 16-18, 2007, Budapest, Hungary.


• Harris, M., R. Joy, N. Zalunardo, R. Werb, B. Yip, R. Hogg, and J. Montaner. Predictors of creatinine (Cr) increase and drug discontinuation in patients receiving Tenofovir DF (TDF). 8th International Congress on Drug Therapy in HIV Infection Glasgow, UK, November 12-16, 2006


• Harris, M., R. Joy, N. Zalunardo, R. Werb, B. Yip, R. Hogg, and J. Montaner. Predictors of creatinine (Cr) increase and drug discontinuation in a province-wide cohort of patients receiving Tenofovir DF (TDF). 8th International Workshop on Adverse Drug Reactions and Lipodystrophy in HIV, September 24-26, 2006, San Francisco, California.


• Levin, A., R. Joy, O. Djurdjev, N. Zalunardo, R. Hogg, M. Harris, B. Yip, R. Werb, and J. Montaner. Baseline GFR<60 ml/min is associated with increased mortality among HIV patients on antiretroviral therapy. American Society of Nephrology 39th Annual Renal Week Meeting November 14-19, 2006, San Diego, California.


• Joy, R., B. Yip, J. Montaner, and R. Hogg. Alternative sources of surveillance data. Insights from a population based drug treatment program in British Columbia, Canada. XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Phillips, P., B. Walker, R. Joy, and J. Montaner, Comparison of histopathological findings in non-tuberculous mycobacterial immune reconstitution syndrome (NTM-IRS), disseminated MAC (DMAC), and tuberculosis (MTb). XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Guillemi, S., A. Toulson , R. Joy, J. Toy, M. Harris, G. Bondy, L. Norman, B. Yip, B. Hogg, and J. Montaner. Changes in lipid profile upon switching from a Lopinavir/rtv (LOP/r) to Atazanavir/rtv (ATZ/r) based HAART. XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Guillemi, S., F. Ng, R. Joy, C. Rocha, M. Harris, G. Bondy, A. Belzberg, and J. Montaner. High prevalence of reduced bone mineral density in hiv positive individuals. XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Hull, M., R. Joy, R. Hogg, and J.S.G. Montaner. Declines in CD4 cell counts during Treatment Interruption differ according to CD4 nadir. XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Fielden, S.J., M.L. Rusch, A. Kaida, R. Joy, and R.S. Hogg. Fertility and associated characteristics in a Canadian cohort of HIV+ women accessing antiretroviral therapy. XVI International AIDS Conference, August 13-18, 2006, Toronto, Canada.


• Harris, M., S. Ramirez, R. Joy, E. Phillips, F. Harris, J.P. Sabo, M. Kraft, and J. Montaner. Effect of Lopinavir (LPV) and Ritonavir (RTV) dose adjustments on the pharmacokinetic (PK) interaction between LPV/rtv and Tipranavir (TPV). Conference on Retroviruses and Opportunistic Infections, February 5-8, 2006, Denver, Colorado.


• Villar del Saz, S., S. Guillemi, V. Montessori, R. Joy, S. Ramirez, M. Harris, and J. Montaner. Assessing the impact of Tenofovir plus Lamivudine based highly active antiretroviral therapy ( HAART) on Hepatitis B plasma DNA in HIV/HBV co-infected individuals. HIV and Hepatitis Co-infection Workshop, January 12-14, 2006, Amsterdam, Holland.


• Montaner J., R. Joy, G. Larsen, M. Valyi, E. Walker, M. Harris. Enfuvirtide (T20) plasma levels and injection site reactions (ISRs) using a novel needle-free gas-powered injection system (Biojector) for subcutaneous administration of T20 in treatment-experienced HIV+ patients 3rd IAS Conference on HIV Pathogenesis and Treatment, July 24 - 27, 2005, Rio de Janeiro, Brazil.


• Palepu, A., M. Tyndall, R. Joy, T. Kerr, N. Press, E. Wood, J. Montaner, and R.S. Hogg. Improved Antiretroviral Adherence and HIV treatment outcomes among HIV/HCV co-infected injection drug users. 14th Annual Canadian Conference on HIV/AIDS Research, Vancouver, May 12-15, 2005, Vancouver, BC.


• Palepu, A., M.W. Tyndall, R. Joy, T. Kerr, N. Press, E. Wood, J.S.G. Montaner, and R. Hogg. Improved antiretroviral adherence and HIV treatment outcomes among HIV-infected drug users enrolled in methadone maintenance therapy. Society of General Internal Medicine 28th Annual Meeting, May 11-14, 2005, New Orleans, Louisiana.


• Harris, M., C. Alexander, R. Joy, S. Guillemi, E. Phillips, S. Langridge, R. Harrigan, and J. Montaner. Effect on Atazanavir (ATV) and Ritonavir (rtv) Plasma Levels of Increasing ATV/rtv Daily Dosing from 300/100 mg to 300/200 mg and 400/200 mg. 6th International Workshop on Clinical Pharmacology of HIV Therapy, April 28 - 30, 2005, Quebec City, Quebec.


• Phillips, E., H. Cote, V. Montessori, R. Joy, and J. Montaner. Predictors of Inter and Intraindividual Variability in Atazanavir Drug Levels in an Atazanavir Therapeutic Drug Monitoring Program. 6th International Workshop on Clinical Pharmacology of HIV Therapy, April 28 - 30, 2005, Quebec City, Quebec.


• Joy, R., D. Tollit, J. Laake, and A.W. Trites. Examining the decline of Steller’s sea lions in south-east Alaska: using simulations to evaluate reconstructions of diet from scat. 14th Wakefield Fisheries Conference, September 30-October 2, 2004, Anchorage, Alaska.


• Joy, R., and A.W. Trites. A power analysis describing the influence of sample size on the accuracy of diet reconstruction. How many scats is enough? Marine Mammal Research Consortium Annual Meeting. September 2003, Vancouver, B.C.


• Joy, R., D. Tollit, J. Laake, and A.W. Trites. Using Feeding Trials and Computer Simulations to assess error and bias in scat analysis. Alaska Sea Lion Conference, January 14-18, 2003, Anchorage, Alaska.


• van den Driessche, R., and T.A. Chatwin. Habitat selection by bats in temperate old-growth forests, Clayoquot Sound, British Columbia. 28th Annual Symposium on Bat Research, October 28-31, 1998, Hot Springs, Arkansas.


• Luszcz, T., and R. van den Driessche. Roost site selection of bats in a temperate old-growth forest, Clayoquot Sound, British Columbia, Canada. 28th Annual Symposium on Bat Research, October 28-31, 1998, Hot Springs, Arkansas.


• van den Driessche, R., T.A. Chatwin, and M. Mather. 1997. Inventory of bats in Clayoquot Sound, Vancouver Island, British Columbia, 1996, 1997. 27th Annual Symposium on Bat Research, October 8-11, 1997, Tuscon, Arizona.