David Clements, Ph.D. 

Conference Presentations

[presenter(s) marked with an asterisk*]

 1. Clements, D.R. 2011. Vulnerability of plant communities in coastal British Columbia to past and future environmental change. Plant Canada, Halifax, NS. [invited talk]

 2. Clements, D.R.* and DiTommaso, A.D. 2011. Predicting weed invasion of Canada under climate change: measuring evolutionary potential. Plant Canada, Halifax, NS. [invited talk]

 3. Methven, D.* and Clements, D.R. 2011. Induction of condensed tannins in Garry oak (Quercus garryana) foliage. Garry oak ecosystem recovery team (GOERT) Research Colloquium, Victoria, BC [11 Feb. 2011].

 4. Clements, D.R.*, Luginbill, S., Jordan, D., Van Dragt, R. and Pelant, R. 2010. Techniques to promote Garry oak seedling survival in areas with high levels of herbivory and competition.  Northwest Science Annual Meeting, Centralia, WA.

 5. Methven, D.* and Clements, D.R. 2010. Field studies of the larval biology of Propertius duskywing (Erynnis propertius). Garry oak ecosystem recovery team (GOERT) Research Colloquium, Victoria, BC [4 Mar. 2010].

 6. Clements, D.R.* and Steunenberg, S. 2010. Competition between native (Vaccinium oxycoccus) and non-native (V. macrocarpon) cranberries in a Sphagnum bog.  BC Invasive Plant Council Annual Forum, Richmond, BC.[poster]

 7. Clements, D.R. 2010. Pacific islands invaded by pigs, plants and people: is paradise lost? Thompson Rivers University, Environmental Science Seminar Series, Kamloops, BC. [14 Jan. 2010].

 8. Clements, D.R.* and Steunenberg, S. 2009.  A tale of two cranberry species: native (Vaccinium oxycoccus) vs. non-native (V. macrocarpon). Canadian Weed Science Society, Charlottetown, Prince Edward Island.

 9. Methven, D.* and Clements, D.R. 2009. The relationship between Propertius duskywing larvae and the Garry Oak Ecosystem.  Murdock Undergraduate Research Conference, Spokane, WA. [poster]

10. Clements, D.R. 2009. Weed ecology in the antelope brush ecosystem.  Pacific Regional Society of Soil Science Fall Field Trip, Oliver, BC. [invited talk]

11. Clements, D.R. 2008. Seed bank responses to restoration techniques in an invaded semi-desert plant community. Canadian Weed Science Society, Banff, AB.

12. Clements, D.R.* and Gonzales, E.K. 2008. Restoration techniques for Garry oak meadows with abundant non-native grasses and herbivores.  BC Invasive Plant Council Research Forum, Richmond, BC. [invited talk]

13. Clements, D.R.* and Carlson, G. 2008.  Conservation science, doing right and walking humbly: An A Rocha perspective.  American Scientific Affiliation, George Fox University, Newberg, Oregon.

14. Clements, D.R.*, Zhou A. and Brown, P.D. 2008. Invasive plant management from cradle to grave: management of decomposition of the annual Impatiens glandulifera. 5th International Weed Science Congress, Vancouver, BC. [poster]

15. Clements, D.R. 2008.  Invasive plant research in Western Canada: University Perspective.  Manitoba Invasive Species Council Forum “BREAKING DOWN BORDERS: Issues and Actions for Invasive Plant Species in Western Canada.”  Winnipeg, Manitoba. [invited talk]

16. Clements, D.R. 2007. Long-term strategies against invasive weeds: case study from Langley, BC. Canadian Weed Science Society, Mt. Tremblant, QC.

17. Clements, D.R. and Cavers, P.B. 2007. The biology of Canadian Weeds. Update on the series. Canadian Weed Science Society, Mt. Tremblant, QC. [poster]

18. Gonzales, E.K. and Clements, D.R.* 2007. Community response to two types of disturbance: Lessons for Garry oak ecosystem restoration. Plant Canada, Saskatoon, SK.

19. Campbell, K.R. and Clements, D.R. 2006. Investigation of allelopathic phenolics exuded from roots of Verbesina encelioides. Canadian Weed Science Society, Victoria, BC. [poster]

20. Campbell, K.R. and Clements, D.R. 2006. Investigation of allelopathic phenolics exuded from roots of Verbesina encelioides. Murdock Pacific Northwest conference [poster]

21. Steensma, K.M.M.* and Clements, D.R.* 2006. A Tale of Oaks, Salmon and Snails:
Land Stewardship at Trinity Western University. American Scientific Affiliation, Calvin College, Grand Rapids, Michigan.

22. Roberts, K.*, Koole, S. and Clements, D. 2006. Garry oak meadow restoration through Douglas-fir removal. Garry Oak Ecosystems Research Colloquium, Victoria, BC.

23. Clements, D.R., Campbell, K., Becker, A, and Bainard, J.D. 2005. Phenotypic differences between a coastal and an interior population of purple loosestrife (Lythrum salicaria L.) in British Columbia. Canadian Weed Science Society, Niagara Falls, ON.

24. Newmaster, S. G.*, S. Ragupathy, C. A. Lacroix, J. Levac, D. R. Clements, B. Booth, M. Irvine, F. W. Bell, M. Cowbrough and J. Alex. 2005. Invasive Alien Plants in Ontario. Popular Summary from Eastern Canadian Vegetation Management Associations Conference. October 4-6, Kingston, Ontario.

25. Shelvey, B.* and D.R. Clements. 2005. Surviving in paradise: Keeping the image of the Kipahulu Valley pristine. American Society of Environmental History, Houston, TX.

26. Clements, D.R. 2005. Invasive species and ethical values: learning from the Hawaiian experience. Weed Science Society of America, Honolulu, HI.

27. Becker, A., Clements, D.R.* and Kunstar, H. 2004. Optimal timing and control treatments for Scotch broom. Canadian Weed Science Society, Winnipeg, MT. [poster]

28. Clements, D.R.* and Corapi, W. V. 2004. Paradise lost? Setting the boundaries around weeds. American Scientific Affiliation, Langley, BC. [symposium talk]

29. Clements, D.R.* 2004. Adaptability of cropland weeds: the genetic route across the border. Weeds Across Borders (North American Weed Management Association), Minneapolis, MN [invited talk]

30. Clements, D.R.* 2004. Invasive weeds of BC. BC Society of Landscape Architects, Vancouver, BC. [invited talk]

31. Clements, D.R.* 2003. Invasive weeds of BC. Canadian Weed Science Society, Halifax, NS. [invited talk]

32. Shriner, H. and Clements, D.R.* 2003. Seedbanks, herbivory and N dispersion for Scotch broom (Cytisus scoparius L.). Canadian Weed Science Society, Halifax, NS [poster]

33. Kunstar, H.C* and Clements, D.R. 2003. Seed banks, propagation and solarization in grassland restoration with Sporobolus cryptandrus. Soil and Water Conservation Society, Spokane, WA. [poster]

34. Clements, D.R.* 2003. Knapweed seed banks in antelope brush. Society for Ecological Restoration Meeting (BC Chapter), Osoyoos, BC. [poster]

35. Clements, D.R.*, Vander Woude, J., and Johnson, J.L. 2002. Weed adaptability: Coastal vs. interior purple loosestrife. Canadian Weed Science Society, Saskatoon, SK. [poster]

36. Clements, D.R.* and Corapi, W. 2002. Responsible stewardship: What about pigs? American Scientific Affiliation, Malibu, California.

37. Clements, D.R. and Shrestha, A.* Oct., 2001. New dimensions in agroecology for developing a biological approach to crop production. Joint meeting of the Agronomy Society of America, the Soil Science Science of America and ... (Invited paper)

38. Clements, D.R.* July, 2001. Stewardship of creation: what about the weeds? American Scientific Afiliation, Manhattan, Kansas.

39. Swanton*, C.J., Shrestha, A., Chandler, K., Clements, D.R. and Booth, B. July, 2001. Alternative weed management systems in a no-till corn-soybean-winter wheat rotation. Canadian Society of Agronomy, Guelph, ON.

40. Swanton*, C.J., Shrestha, A., Chandler, K., Clements, D.R. and Booth, B. February, 2001. Agronomic and ecological evaluation of weed management systems in a no-till corn-soybean-winter wheat rotation. Weed Science Society of America, Greensboro, NC. 

41. Clements, D.R.* 2000.The war on biological invaders: Churchill's defiance or Chamberlain's complicity? Inheriting the Earth: Faith, Conflict and the Environmental Professional. 2nd in the series of Canadian conferences for Christian environmental professionals, held at Trinity Western University in Langley. I chaired the conference, along with John R. Wood (The King's University College) and Bruce Shelvey (TWU).

42. Clements, D.R.*, Birch, B., and Snidal, T. 2000. Invasive characteristics of Himalayan balsam, Impatiens glandulifera. Weed Science Society of America annual meeting, Toronto, ON.

43. Jack Van Dyke* and David R. Clements*. 1999. Stewardship of Creation (Awakening Biophilia to Keep the Earth). Presentation to combined meeting of Christian teachers (NWCSI-CTABC), Lynden, Washington.

44. David R. Clements* and Heather Robinson.* 1999. The five C's of A Rocha. Workshop at "Stewardship of Creation" at St. John's Shaughnessy, Vancouver, BC.

45. Michael T. Irvine*, Robert G. Wagner, David R. Clements and Clarence J. Swanton. 1998. Growth response of bareroot eastern white pine nursery stock to multi-species weed competition. 3rd International Symposium on Forest Vegetation Management, Sault Ste Marie, ON.

46. Clements, D.R.* 1998. Preserving the back 40 at TWU. Sensitive Habitat Inventory Mapping Workshop, 1998. Capilano College, North Vancouver, B.C.

47. Clements, D.R.* and P. Krannitz. 1998. Seed banks and disturbance dynamics in a dry grassland with antelope bitter-brush. Weed Science Society of America annual meeting, Chicago, Illinois

48. Clements, D.R.,* A. Carlile, K.M.M. Steensma, D. Kehler, B.G. Wernick and H. Schreier. 1997. Management of a healthy salmon stream (The Salmon River, Langley, B.C.) subject to increased urban and agricultural pressures. Soil and Water Conservation Society Annual Meeting, Toronto, ON. [poster]

49. Clements, D.R.*, L. Reedyk and P. Krannitz. 1996. Weed seedbanks in the Southern Okanagan Grassland. Expert Commitee on Weeds national meeting, Victoria, B.C.

50. Clements, D.R.* 1996. The underground world: Weeds lying in wait. Antelope-brush Ecosystem Symposium for the South Okanagan Grassland Conservation Project, Penticton, B.C.

51. Clements, D.R.*, C.J. Swanton and D.L. Benoit. 1994. Seed return and seedbank dynamics of common lambsquarters (Chenopodiumalbum L.) in four tillage systems. Weed Science Society of America annual meeting, St. Louis, Missouri

52. Clements, D.R.*, C.J. Swanton, S.F. Weise, R. Brown, D. Hume and P. Stonehouse. 1993. Energy efficiency of alternative weed management systems. Poster at Ontario Ministry of Environment and Energy Technology Transfer Conference, Toronto, Ontario.

53. Clements, D.R.* 1993. Integrating ecological theory into integrated weed management. Guest lecture to a graduate course at the University of Western Ontario, Dept. of Plant Sciences, London, Ontario.

54. Clements, D.R.* 1993. Energy analysis of alternative weed management systems. IWM seminar, Guelph Legion, Guelph, Ontario.

55. Clements, D.R.*, C.J. Swanton and S.F. Weise. 1993. Implications of increased weed diversity under integrated weed management. Weed Science Society of America annual meeting, Denver, Colorado

56. Clements, D.R.* and R. Harmsen. 1992. Foraging strategy of Zetzelliamali (Acari: Stigmaeidae). Entomological Society of Ontario, Kingston, Ontario.

57. Clements, D.R.* and R. Harmsen. 1991. Interactions within the natural enemy complex of plant inhabiting mites. Symposium on Population Dynamics of Plant Inhabiting Mites, Amsterdam, The Netherlands.

58. Clements, D.R. 1990. The apple rust mite, Aculus schlechtendali (Acari: Eriophyoidae): A beneficial pest. Entomological Society of Ontario, Sault Ste. Marie, Ont. abstract published in Proc. ent. Soc. Ont. 121:127-128. Won "President's Prize"

59. Clements, D.R. 1990. Population dynamics of phytoseiid-stigmaeid (Acarina) interactions. American Arachnological Society, Ottawa, ON.

60. Clements, D.R.* and R. Harmsen. 1990. Predatory compatibility: An evaluation by system simulation. Entomological Society of Canada, Banff, AB.

61. Clements, D.R. 1990. Population implications of egg cannibalism. Ontario Ecological and Ethological Colloquium, Brock University, St. Catharines, ON.

62. Clements, D.R. 1989. The role of stigmaeids in the orchard acarine system. Entomological Society of Ontario, London, Ont. abstract published in Proc. ent. Soc. Ont. 120:74-75.

63. Clements, D.R.* and R. Harmsen. 1989. The potential efficacy of phytoseiid and stigmaeid predators in integrated control of spider mites on apple. Ontario Pesticides Advisory Committee, Toronto, ON.

64. Clements, D.R.* and R. Harmsen. 1988. Niche differentiation by two predatory mites. Ontario Ecological and Ethological Colloquium, U.W.O., London, ON.

65. Clements, D.R.* and R. Harmsen. 1988. The development of an IPM module for the control of phytophagous mites in apple orchards. Ontario Pesticides Advisory Committee, Toronto, ON.

66. Clements, D.R.* and P.B. Cavers. 1986. The seasonal pattern of seed viability in Linariavulgaris. Ontario Ecological and Ethological Colloquium, York University, Toronto, ON.