Ducks Unlimited Canada
Institute for Wetland & Waterfowl Research
PO Box 1160
Stonewall, Manitoba, Canada
R0C 2Z0

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Bob Emery

(Retired - 2021)

Helped our understanding of the impact of landscape and environmental change on waterfowl; evaluated the restoration of large marsh complexes.

Bob joined DUC in 1990. He worked on the Prairie Habitat Joint Venture Assessment Project and oversaw data collection for IWWR’s Spatial and Temporal Variation in Nesting Success of Prairie Ducks study: two long-term waterfowl research projects. The information compiled from the studies has been used to guide DUC’s upland habitat programs across Prairie Canada and the results continue to provide key feedback to enhance conservation program delivery.

Most recently, Bob was involved in evaluating the restoration of Delta Marsh, a large, freshwater coastal wetland on the south shore of Lake Manitoba.


  • B.Sc., Agriculture and Wildlife, University of British Columbia

Bob’s Publications (organized by year)

Devries, J. H., L. M. Armstrong, D. W. Howerter, and R. B. Emery. In Press. Waterfowl distribution and productivity in the Prairie Pothole Region of Canada: Tools for conservation planning. Wildlife Monographs.

Bortolotti, L.E., R.B. Emery, P.D. Kowal, L.M. Armstrong, V.B. Harriman, H.V. Singer, M.J. Anteau, F.B. Baldwin, C. Meuckon, and D.A. Wrubleski. 2023. Migrating ducks and submersed aquatic vegetation respond positively after invasive common carp (Cyprinus carpio) exclusion from a freshwater coastal marsh. Wetlands 43:25.

Kowal, P.D., P. Badiou, R.B. Emery, L.G. Goldsborough, D.A. Wrubleski, L.M. Armstrong, and B. Page. 2022. Improvement in water clarity and submersed aquatic vegetation cover after exclusion of invasive common carp from a large coastal wetland, Delta Marsh, Manitoba. Frontiers in Environmental Science 10:992690.

Bortolotti, L.E., R.B. Emery, L.M. Armstrong, and D.W. Howerter. 2022. Landscape composition, climate variability, and their interaction drive water waterfowl nest survival in the Canadian Prairies. Ecosphere 13:e3908.

Brasher, M.G., J.B. Davis, M.R. Kaminski, R.B. Emery, R.M. Kaminski, and G.A. Baldassarre. 2014. Criteria for determining breeding-pair status of male mallards captured in decoy traps. Wildlife Society Bulletin 38:599-604.

Howerter, D.W., M.G. Anderson, J.H. Devries, B.L. Joynt, L.M. Armstrong, R.B. Emery, and T.W. Arnold. 2014. Variation in mallard vital rates in Canada Aspen Parklands: The Prairie Habitat Joint Venture assessment. Wildlife Monographs 188:1-37.

Bloom, P.M., D.W. Howerter, R.B. Emery, and L.M. Armstrong. 2013. Relationships between grazing and waterfowl production in the Canadian prairies. Journal of Wildlife Management 77: 534-544.

Arnold, T.W., A.M. Pagano, J.H. Devries, R.B. Emery, D.W. Howerter, and B.L. Joynt. 2008. Social indices of breeding productivity in parkland mallards. Journal of Wildlife Management 72:224-230.

Arnold, T.W., L.M. Craig-Moore, L.M. Armstrong, D.W. Howerter, J.H. Devries, B.L. Joynt, R.B. Emery, and M.G. Anderson. 2007. Waterfowl use of dense nesting cover in the Canadian prairie parklands. Journal of Wildlife Management 71:2542-2549.

Emery, R.B., D.W. Howerter, L.M. Armstrong, M.G. Anderson, J.H. Devries, and B.L. Joynt. 2005. Seasonal variation in waterfowl nesting success and its relation to cover management in the Canadian prairies. Journal of Wildlife Management 69:1181-1193.

Thorn, T.D., R.B. Emery, D.W. Howerter, J.H. Devries, and B.L. Joynt. 2005. Use of radio-telemetry to test for investigator effects on nesting mallards, Anas platyrhynchos. Canadian Field-Naturalist 119:541-545.

Arnold, T.W., M.G. Anderson, M.D. Sorenson, and R.B. Emery. 2002. Survival and philopatry of female redheads breeding in southwestern Manitoba. Journal of Wildlife Management 66:162-169.

Arnold, T.W., D.W. Howerter, J.H. Devries, B.L. Joynt, R.B. Emery, and M. G. Anderson. 2002. Continuous laying and clutch-size limitation in mallards. Auk 119:261-266.

Anderson, M.G., M.S. Lindberg, and R.B. Emery. 2001. Probability of survival and breeding for juvenile female canvasbacks. Journal of Wildlife Management 65:403-415.

Anderson, M.G., R.B. Emery, and T.W. Arnold. 1997. Reproductive success and female survival affect local population density of canvasbacks. Journal of Wildlife Management 61:1174-1191.

Howerter, D.W., B.L. Joynt, R.B. Emery, and T.P. Sankowski. 1997. Effects of nasal discs on nesting by mallards. Journal of Field Ornithology 68:1-6.

Paquette, G.A., J.H. Devries, R.B. Emery, D.W. Howerter, B.L. Joynt, and T.P. Sankowski. 1997. Effects of transmitters on reproduction and survival of wild mallards. Journal of Wildlife Management 61:953-961.

Howerter, D.W., R.B. Emery, B.L. Joynt, and K.L. Guyn. 1996. Mortality of mallard ducklings exiting from electrified predator exclosures. Wildlife Society Bulletin 24:673-680.

Leonard, J.P., M.G. Anderson, H.H. Prince, and R.B. Emery. 1996. Survival and movements of canvasback ducklings. Journal of Wildlife Management 60:863-874.

Arnold, T.W., M.G. Anderson, R.B. Emery, M.D. Sorenson, and C.N. De Sobrino. 1995. The effects of late-incubation body mass on reproductive success and survival of canvasbacks and redheads. Condor 97: 953-962.