Primary Publications


Korman, J., Gross, E.S., and L.F Grimaldo. 2021. Statistical evaluation of behavior and population dynamics models predicting movement and proportional entrainment loss of adult Delta Smelt in the Sacramento-San Joaquin River Delta. San Francisco Estuary and Watershed Science 19(1). doi:

Korman, J., M.D. Yard, Dzul, M.C., Yackulic, C.B., Dodrill, M.J., Deemer, B.R., and T.A. Kennedy. 2021. Changes in prey, turbidity, and competition reduce somatic growth and cause the collapse of a fish population. Ecol. Monog. 91(1).

Korman, J., M.D. Yard, and T.A. Kennedy. 2017. Trends in rainbow trout recruitment, abundance, survival, and growth during a boom-and-bust cycle in a tailwater fishery. Trans. Am. Fish. Soc. 146:1043-1057.

Korman, J., and M.D. Yard. 2017. Effects of environmental covariates and density on the catchability of fish populations and the interpretation of catch per unit effort trends. Fish. Res. 189:18-34.

Korman, J., Schick, J., and B. Mossop. 2016. Estimating river-wide abundance of juvenile fish populations: How much sampling is enough? N. Am. J. Fish. Manage. 36:213-229.

Korman, J, Yard, M.D., and C.B. Yackulic. 2016. Factors controlling the abundance of rainbow trout in the Colorado River in Grand Canyon in a reach utilized by endangered humpback chub. Can. J. Fish. Aquat. Sci. 73:105-124.

Korman, J., Martell, S.J.D., Walters, C.J., Makinster, A.S., Coggins, L.G., Yard, M.D., and W.R. Persons. 2012. Estimating recruitment dynamics and movement of rainbow trout (Oncorhynchus mykiss) in the Colorado River in Grand Canyon using an integrated assessment model. Can. J. Fish. Aquat. Sci. 69: 1827-1849.

Korman, J., Walters, C.J., Martell, S.J.D., Pine, W.E. III., and D. Dutterer. 2011. Effects of flow fluctuations on habitat use and survival of age-0 Rainbow trout in a large regulated river. Can. J. Fish. Aquat. Sci. 68:1097-1109

Korman, J., Martell, S.J.D., and C.J. Walters. 2011. Describing population dynamics for early life stages of rainbow trout using a stock synthesis model. Can. J. Fish. Aquat. Sci. 68:1110-1123.

Korman, J., Kaplinski, M., and T.S. Melis. 2011. Effects of fluctuating flows and a controlled flood on incubation success and early survival rates and growth of age-0 rainbow trout in a large regulated river. Trans. Am. Fish. Soc. 140: 487-505.

Korman, J., Decker, A.S., Mossop, B., and J. Hagen. 2010. A comparison of electrofishing- and snorkelling-based mark-recapture methods for estimating detection probability and abundance of juvenile steelhead in a medium-sized river. Nor. Am. J. Fish. Manage. 30: 1280-1302.

Korman, J., Yard, M., Walters, C., and L.G. Coggins. 2009. Effects of fish size, habitat, flow, and density on capture probabilities of age-0 rainbow trout estimated from electrofishing at discrete sites in a large river. Trans. Am. Fish. Soc. 138:58-75.

Korman, J., and S.E. Campana. 2009. Effects of hydropeaking on nearshore habitat use and growth of age-0 rainbow trout in a large regulated river. Trans. Am. Fish. Soc. 138:76-87.

Korman, J. 2009. Early life history dynamics of rainbow trout in a large regulated river. Ph.D. thesis. Department of Zoology, University of British Columbia. 214 pp.

Korman, J., Wiele, S.M., and M. Torizzo. 2008. Modelling effects of discharge on habitat quality and dispersal of juvenile humpback chub (Gila Cypha) in the Colorado River, Grand Canyon. Riv. Res. Applic. 20: 379-400.

Korman, J., Melville, C.C., and P.S. Higgins. 2007. Integrating multiple sources of data on migratory timing and catchability to estimate escapement for steelhead trout (Oncorhynchus mykiss). Can. J. Fish. Aquat. Sci. 64:1101-1115.

Korman, J., Ahrens, R.N.M., Higgins, P.S., and C.J. Walters. 2002. Effects of observer efficiency, arrival timing, and survey life on estimates of escapement for steelhead trout (Oncorhynchus mykiss) derived from repeat mark-recapture experiments. Can. J. Fish. Aquat. Sci. 59: 1116-1131.

Korman, J. and P.S. Higgins. 1997. Utility of escapement time series data for monitoring the response of salmon populations to habitat alteration. Can. J. Fish. Aquat. Sci. 54:2058-2097.

Korman, J., R.M. Peterman and C.J. Walters. 1995. Empirical and theoretical analyses of time-series bias in stock-recruitment relationships of Sockeye salmon (Oncorynchus nerka). Can. J. Fish. Aquat. Sci. 52:2174-2189.

Korman, J., D.R. Marmorek, G. Lacroix, P.G. Amiro, J.A. Ritter, W.D. Watt, R.E. Cutting, and D.C.E. Robinson. 1994. Development and evaluation of a biological model to assess regional scale effects of acidification on Atlantic salmon. Can. J. Fish. Aquat. Sci. 51: 662-680.

Yard, M.D., Korman, J., Walters, C.J., and T.A. Kennedy. 2016. Seasonal and spatial patters of growth of rainbow trout in the Colorado River in Grand Canyon Arizona. Can. J. Fish. Aquat. Sci. 73:125-139.

Avery L.A., Korman, J., and W.R. Persons. 2015. Effects of increased discharge on spawning and age-0 recruitment of rainbow trout in the Colorado River at Lees Ferry, Arizona. N. Am. J. Fish. Manage. 35:671-680.

Melis, T. S., C. J. Walters and J. Korman. 2015. Surprise and Opportunity for Learning in Grand Canyon: the Glen Canyon Dam Adaptive Management Program. Ecology and Society 20 (3): 22.

Yackulic, C.B., Yard, M.D., Korman, J., and D.R. van Haverbeke. 2014. A quantitative life history of endangered humpback chub that spawn in the Little Colorado River: variation in movement, growth, and survival. Ecol. Evol. 4: 1006-1018.

Finch, C., Pine III, W.E., Yackulic, C.B., Dodrill, M.J., Yard, M., Gerig, B.S., Coggins Jr., L.G., and J. Korman. 2015. Assessing juvenile native fish demographic responses to a steady flow experiment in a large regulated river. River Res. Applic. 32:763-775

Dodrill, M.J., Yackulic, C.B., Gerig, B., Pine, W.E., Korman, J., and C. Finch. 2015. Do management actions to restore habitat benefit native fish conservation? Distribution of juvenile native fish among shoreline habitats of the Colorado River. River Res. Appl. 31:1203-1217.

Melnychuk, M., Korman, J., Hausch, S., Welch, D., McCubbing, D., and C. Walters. 2014. Marine survival difference between wild and hatchery-reared steelhead trout determined during early downstream migration. Can. J. Fish. Aquat. Sci. 71: 831-846.

Bradford, M.J., Higgins, P.S., Korman, J., and J. Sneep. 2011. Does more water mean more fish? Test of an environmental flow release in the Bridge River, British Columbia. Freshwater Biology 56:2119-2134.

Melis, T.S., Korman, J., and T.A. Kennedy. 2012. Abiotic and biotic responses of the Colorado River to a March 2008 controlled flood experiment at Glen Canyon Dam, AZ. River Res. Appl. 28:764-776.

Yard, M.D. Coggins. L.G., Baxter, C.V., Bennett, G.E., and J. Korman. 2011. Trout piscivory in the Colorado River, Grand Canon: effects of turbidity, temperature, and fish prey availability. Trans. Am. Fish. Soc. 140:471-486.

Hagen, J, Decker, A.S., Korman, J., and R.G. Bison. 2010. Effectiveness of night snorkelling for estimating steelhead parr abundance in a large river basin. Nor. Am. J. Fish. Manage. 30: 1303-1314.

Walters, C.J., Martell, S.J.D., and J. Korman. 2006. A stochastic approach to stock reduction analysis. Can. J. Fish. Aquat. Sci. 63:212-223.

Bradford, M.J., Korman, J., and P.S. Higgins. 2005. Using confidence intervals to estimate the response of salmon populations (Oncorhunchus spp.) to experimental habitat alterations. Can. J. Fish. Aquat. Sci. 62: 2716-2726.

Walters, C.J. and J. Korman. 2001. Analysis of stock and recruitment data for deriving spawning threshold levels: models, fitting, precision, diagnostics, pitfalls. In Prévost, E. and G. Chaput [Editors]. Stock, recruitment and reference points: Assessment and management of Atlantic salmon. INRA Paris 2001.

Walters, C., J. Korman, L. E. Stevens, and B. Gold. 2000. Ecosystem modeling for evaluation of adaptive management policies in the Grand Canyon. Conservation Ecology 4(2): 1.

Walters, C.J. and J. Korman. 1999. Linking recruitment to trophic factors: revisiting the Beverton-Holt recruitment model from a life history and multispecies perspective. Rev. Fish. Biol. Fisheries. Vol 9: 187-202.

Walters, C.J. and J. Korman. 1999. Cross-scale modeling of riparian ecosystem responses to hydrologic management. Ecosystems 2:411-421.

Lacroix, G.L. and J. Korman. 1996. Timing of episodic acidification in Atlantic salmon rivers influences evaluation of mitigative measures and recovery forecasts. Can. J. Fish. Aquat. Sci. 53: 589-599.

Marmorek, D.R., Macqueen, R.M., Wedeles, C.H.R., Korman, J., P.J. Blancher and D.K. McNicol. 1996. Improving pH and alkalinity estimates for regional scale acidification effects: Incorporation of dissolved organic carbon. Can. J. Fish. Aquat. Sci. 53: 1602-1608.

Adkison, M.D., Peterman, R.M., Lapointe, M.F., D.M. Gillis and J. Korman. 1996. Alternative models of climatic effects on sockeye salmon (Oncorhynchus nerka) productivity in Bristol Bay, Alaska, and the Fraser River, British Columbia. Fish. Oceanogr. 5:137-152.

Marmorek, D.R. and J. Korman. 1993. The use of zooplankton in a biomonitoring program to detect lake acidification and recovery. Water, Air, and Soil 69: 223-241.

Korman, J. 1989. Enriching effects of salmon farms in British Columbia coastal waters and the influence of flushing and seasonality. Department of Oceanography, University of British Columbia, Vancouver, BC. MSc Thesis. 94 pp.

Selected Reports

Wood, C.C., Sneep. D., McAdam, S., Korman, J., and T. Hatfield. 2007. Recovery potential assessment for white sturgeon populations listed under the Species at Risk Act. Canadian Science Advisory Secretariat Research Document 2007/003.

Walters, C.J., Korman, J., and S. McAdam. 2005. An assessment of white sturgeon stock status and trends in the Lower Fraser River. Canadian Science Advisory Secretariat Research Document 2006/066.

Korman, J. and C.J. Walters. 2001. Nechako River white sturgeon recovery planning: Summary of stock assessment and Oct 2-3, Workshop. Report prepared by Ecometric Research Inc. for B.C. Fisheries, Victoria, B.C.