CUNJAK, R.A. - University of New Brunswick

研究领域

My current research program is focused on running water environments and the biota living there, with special interest in the ecology and conservation of riverine fishes, especially Atlantic salmon. There are three areas of focus : 1. Winter Biology - my research approach to this topic involves studies of fish movement and habitat-use, energetic costs of overwintering, and the impact of river ice on egg survival and habitat availability; 2. Anthropogenic impacts and river conservation/restoration- quantification of forestry, hydroelectric and agriculture impacts in stream ecosystems (streamflow, sediment loading, nutrient cycling, water temperature); and, 3. Stream ecosystem dynamics - understanding the complexity of energy flow between terrestrial and aquatic habitats, and from primary producers to top predators using stable isotope analysis (C,N,H,S), and the importance of in-stream stressor events (e.g. floods, ice break-up, high temperature) on stream communities and populations (invertebrates, fish). Currently, I supervise 8 graduate students carrying out research in rivers from British Columbia to Newfoundland and Norway to Bosnia.

近期论文

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Cunjak, R.A. and R.W. Newbury. Rivers of eastern Canada, pp. 000-000. In Rivers of North America (Benke, A.C. and C.E. Cushing, eds.). Academic Press, San Diego, CA. (in review). Cunjak, R.A., R.A. Curry, K. Clarke and D.A. Scruton. Fish-forestry studies in Atlantic Canada, pp.000-000. In Fishes and Forests: an Approach to Fish-Forestry Interaction (Northcote, T.G. and G.F. Hartman, eds.). Blackwell Science. Oxford (accepted). Swanson, H.K., Johnston, T.A., W.C. Leggett, R.A. Bodaly, R.R. Doucett, and R.A. Cunjak. 2002. Trophic positions and mercury concentrations of rainbow smelt (Osmerus mordax) and native forage fishes in northwestern Ontario lakes. Ecosystems (in press). Lund S.G., D. Caissie, R. A. Cunjak, M. M. Vijayan and B.L. Tufts . 2002. The effects of environmental heat stress on heat shock mRNA and protein expression in Miramichi strain Atlantic salmon (Salmo salar) parr. Can. J. Fish. Aquat. Sci. (in press). Cunjak, R.A., D. Guignion,, R.B. Angus, and R. MacFarlane. 2002. Using incubation baskets to assess salmonid egg/alevin survival in relation to fine sediment deposition, pp. 82-91 In D.K. Cairns (ed.). Effects of land use practices on fish, shellfish, and their habitats on Prince Edward Island. Can. Tech. Report. Fish. Aquat. Sci. 2408: 157p. Arndt, S.K.A., R.A. Cunjak, and T.J. Benfey. 2002. Effect of summer floods and spatio-temporal scale on growth and feeding of juvenile Atlantic salmon in two New Brunswick streams. Trans. Amer. Fish. Soc. 131: 607-622. Roussel, J.-M., A. Haro , and R.A Cunjak. 2000. Field-test of a new method for tracking small fishes in shallow rivers using passive integrated transponder (PIT) technology. Can. J. Fish. Aquat. Sci. 57: 1326-1329. Cunjak, R.A., D. Guignion,, R.B. Angus, and R. MacFarlane. 2000. Using incubation baskets to assess salmonid egg/alevin survival in relation to fine sediment deposition. In D.K. Cairns (ed.). Effects of land use practices on fish, shellfish, and their habitats on Prince Edward Island. Can. Tech. Report. Fish. Aquat. Sci. (In press). Johnston, T. A. and R.A. Cunjak. 1999. Dry mass-length relationships for benthic insects: a review with new data from Catamaran Brook, New Brunswick, Canada. Freshw. Biol. 41: 653-674. McCormick, S.D., R.A. Cunjak, B. Dempson, M.F. O'Dea, and J.B. Corey. 1999. Temperature-related loss of smolt characteristics in Atlantic salmon (Salmo salar) in the wild. Can. J. Fish. Aquat. Sci. 56: 1649-1658. Heggenes, J., Bagliniere, J.L., and Cunjak, R.A. 1999. Spatial niche variability for young Atlantic salmon (Salmo salar) and brown trout (S. trutta) in heterogenous streams. Ecol. Freshw. Fish 8: 1-21. Komadina-Douthwright, S.M., T. Pollock, D. Caissie, R.A. Cunjak and P. Hardie. 1999. Water quality of Catamaran Brook and the Little Southwest Miramichi River, N.B. (1990-1996). Canadian Data Report of Fisheries and Aquatic Science 1051:27p. Cunjak, R.A. and J. Therrien. 1998. Inter-stage survival of wild juvenile Atlantic salmon, Salmo salar L. J. Fish. Manage. Ecol. 5: 209-224. Cunjak, R.A. T.D. Prowse, and D.L. Parrish. 1998. Atlantic salmon in winter: "the season of parr discontent"? Can. J. Fish. Aquat. Sci. 55 (Suppl. 1): 161-180. Cunjak, R.A. 1998. Winter ecology of juvenile Atlantic salmon in running water: a review. pp. 181-194. In: R.A. Kazakov (ed.). The Atlantic salmon. NAUKA, St. Petersburg, Russia (in Russian). Dodson, J., R.J. Gibson, R.A. Cunjak, K.Friedland, C.G. de Leaniz, M. Gross, R. Newbury, J. Nielsen, M. Power, and S. Roy. 1998. Elements in the development of a conservation plan for Atlantic salmon. Can. J. Fish. Aquat. Sci. 55 (Suppl. 1): 312-323 . Grant, J.W.A., S.O. Steingrimsson, E.R. Keeley, and R.A. Cunjak. 1998. Implications of territory size for the measurement and prediction of salmonid abundance in streams. Can. J. Fish. Aquat. Sci. 55 (Suppl. 1): 181-190. Hardie, P., R.A. Cunjak, and S. Komadina-Douthwright. 1998. Fish movement in Catamaran Brook, NB (1990-1996). Can. Data Rep. Fish. Aquat. Sci. 1038: 64p. Caissie, D., S.M. Komadina-Douthwright, R.A. Cunjak and B. Burrell. 1997. Ice conditions in the Southwest Miramichi River and its possible influence on winter movement of post-spawned Atlantic salmon. pp. 371-390. In Proceedings: The 9th Workshop on River Ice, September 24-26, 1997, Fredericton, NB. 442p. Komadina-Douthwright, S., D. Caissie, and R.A. Cunjak. 1997. Winter movement of radio-tagged Atlantic salmon (Salmo salar) kelts in relation to frazil ice in pools of the Miramichi River. Can. Tech. Rep. Fish. Aquat. Sci. 2161: 66p. Bourgeois, G., Cunjak, R.A., Caissie, D. and El-Jabi, N. 1997. Cautions on forcing regression equations through the origin: Response to comment. North Amer. J. Fish. Manage. 17:227-228. St. Hilaire, A., D. Caissie, R.A. Cunjak, and G. Bourgeois. 1997. Spatial and temporal characterization of suspended sediments and substrate composition in Catamaran Brook, New Brunswick. Can. Tech. Rep. Fish. Aquat. Sci. 2165: 31p Cunjak, R.A. 1996. Winter habitat of selected stream fishes and potential impact from land-use activities. Can. J. Fish. Aquat. Sci. 53 (Supplement 1): 267-282. Cunjak, R.A. and J. Therrien. 1996. Modeling Atlantic salmon population dynamics in a small stream. In Leclerc, M. et al. (editors). Proceedings of the Second IAHR Symposium on Habitat Hydraulics, Ecohydraulics 2000, Québec, June 11-14,1996.INRS-Eau, Quebec: pp. B477-B486. Bourgeois, G., R. Cunjak, D. Caissie, and N. El-Jabi. 1996. spatial and temporal evaluation of PHABSIM in relation to the measured density of juvenile Atlantic salmon in a small stream. N. Amer. J. Fish. Manage. 16:154-166.