De Clerck-Floate, Rosemarie, Ph.D.

Research Scientist

Contact Information:

5403 - 1 Avenue South
PO Box 3000
Lethbridge, Alberta T1J 4B1
Telephone: 403-317-2270
Fax: 403-382-3156
Email: Rosemarie.Declerck-Floate@agr.gc.ca

Discover, develop and implement arthropod agents for biological control of weeds.
The use of fertilization to improve the delivery, reliability, and study of weed biological control.
Interactions of biocontrol insect, target weed and non-target, native plant populations on rangelands.

Adjunct Professor, University of Lethbridge, Department of Biological Sciences
Adjunct Professor, University of British Columbia, Okanagan, Irving K. Barber School of Arts and Science
Associate Editor, Weed Biocontrol Section, Environmental Entomology
Vice President, Entomological Society of Alberta

The links below lead to abstracts with access to full text.

Barnewall, E.C. and De Clerck-Floate, R.A. (2012). " A preliminary histological investigation of gall induction in an unconventional galling system.", Arthropod-Plant Interactions, 6(3), pp. 449-459. doi : 10.1007/s11829-012-9193-4
De Clerck-Floate, R.A., Saunders, P., and Floate, K.D. (2012). "Release and recapture of three insect species test the efficacy of trap method and air flow in insect containment.", Canadian Entomologist, 144(4), pp. 609-616. doi : 10.4039/tce.2012.45
Julien, M.H., De Clerck-Floate, R.A., Bourne, A., Gellender, M., and Xu, C.-Y. (2012). "Determining the growth responses of Phyla canescens to shoot and root damage as a platform to better-informed weed management decisions.", Australian Journal of Botany, 60(4), pp. 310-318. doi : 10.1071/BT11205

De Clerck-Floate, R.A. and Cárcamo, H.A. (2011). "Biocontrol arthropods: new denizens of Canada's grassland agroecosystems.", in Floate, K.D. (ed.) - Arthropods of Canadian Grasslands. Vol. 2: Inhabitants of a Changing Landscape, Biological Survey of Canada (BSC), Chapter 12, pp. 291-321.
Gaskin, J.F., Bon, M.-C., Cock, M.J.W., Cristofaro, M., De Biase, A., De Clerck-Floate, R.A., Ellison, C.A., Hinz, H.L., Hufbauer, R.A., Julien, M.H., and Sforza, R. (2011). "Applying molecular-based approaches to classical biological control of weeds (Review).", Biological Control, 58(1), pp. 1-21. doi : 10.1016/j.biocontrol.2011.03.015

Van Hezewijk, B.H., Bourchier, R.S., and De Clerck-Floate, R.A. (2010). "Regional-scale impact of the weed biocontrol agent Mecinus janthinus on Dalmatian toadflax (Linaria dalmatica).", Biological Control, 55(3), pp. 197-202. doi : 10.1016/j.biocontrol.2010.08.008

Boyetchko, S.M., Bailey, K.L., and De Clerck-Floate, R.A. (2009). "Current biological weed control agents - their adoption and future prospects.", Prairie Soils and Crops, 2:6.
De Clerck-Floate, R.A. and Wikeem, B. (2009). "Influence of release size on establishment and impact of a root weevil for the biocontrol of houndstongue (Cynoglossum officinale).", Biocontrol Science and Technology, 19(2), pp. 169-183. doi : 10.1080/09583150802650167
Smith, E.G., De Clerck-Floate, R.A., Van Hezewijk, B.H., Moyer, J.R., and Pavlik, E. (2009). "Costs of mass-producing the root weevil, Mogulones cruciger, a biological control agent for houndstongue (Cynoglossum officinale L.).", Biological Control, 48(3), pp. 281-286. doi : 10.1016/j.biocontrol.2008.12.001

Catton, H.A., De Clerck-Floate, R.A., and Lalonde, R.G. (2012). "Houndstongue, biocontrol and nontarget attack.", South Okanagan-Similkameen Invasive Plant Society (SOSIPS) Annual General Meeting, Penticton, BC, Canada, April 10, 2012. (Abstract)
Catton, H.A., Lalonde, R.G., and De Clerck-Floate, R.A. (2012). "Patch-level nontarget attack by the biocontrol weevil Mogulones crucifer: A temporary spillover effect requiring host plant presence?", Ecological Society of America (ESA 2012) 97th Annual Meeting, Portland, OR, USA, August 5-10, 2012. (Abstract)
De Clerck-Floate, R.A. and Bourchier, R.S. (2012). "Classical weed biocontrol in Canada: How do new agents against emerging invasive plants happen?", Terrestrial Invasive Plant Species Conference: Understanding Plant Invasions in a Changing World, Sault Ste. Marie, ON, Canada, August 20-22, 2012, pp. 40. (Abstract)
De Clerck-Floate, R.A. and Dyck, J. (2012). "Developing a biological control strategy for hawkweeds in Canada.", Entomological Society of Canada and the Entomological Society of Alberta 2012 Joint Annual Meeting, Coast Edmonton Plaza Hotel, Edmonton, AB, Canada, November 4-7, 2012. (Poster)
De Clerck-Floate, R.A., Gassmann, A., Sing, S., and Tŏsevski, I. (2012). Petition for field release of Rhinusa pilosa (Gyllenhal, 1838) (Coleoptera: Curculionidae) against yellow toadflax (Linaria vulgaris Mill.: Plantaginaceae) in Canada and the U.S.A. (Report)

De Clerck-Floate, R.A., Bourchier, R.S., and Van Hezewijk, B.H. (2009). "What’s happening up north on weed biocontrol research?", Interagency Biological Control Meeting, Billings, MT, USA, November 16-17, 2009. (Presentation)
De Clerck-Floate, R.A., Floate, K.D., and Saunders, P. (2009). "A test of containment efficacy using living insects in a release and recapture study.", Entomological Society of Alberta 57th Annual Meeting, Lakeland College, Vermilion, AB, Canada, November 5-7, 2009, pp. 21.
De Clerck-Floate, R.A., Floate, K.D., and Saunders, P. (2009). "A test of containment efficacy using living insects in a release and recapture study.", Entomological Society of Canada and Manitoba Entomological Society 2009 Joint Annual Meeting, Winnipeg, MB, Canada, October 18-21, 2009, pp. 46.