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Dr. Vernon Thomas
Associate Professor Emeritus

Email: vthomas@uoguelph.ca

Office: SCIE 2475
Ext: 52738

Education

B.Sc. - Oxford 1966
M.Sc. - Guelph 1971
Ph.D. - Guelph 1975

Research

After years of researching the ecological energetics of migratory waterfowl and resident arctic birds and mammals, my research interests have shifted towards the use of science in producing revised policies for wild life management. Much of the world's wild life occurs in areas under intense agriculture, forestry, or other forms of human use, and most of the pressing problems of management relate to reconciling conflicting uses and priorities for wild life habitat. My principal interest is the application of science to such situations and the revision of policies.

My students and I are currently researching the problem of lead toxicity to wild life, specifically as it affects waterfowl and loons. We are investigating non-toxic substitutes and how provincial and federal policy and legislation on this topic needs to be revised to achieve a common North American reform.

My other area of research involves the application of ecological principles to agriculture so that extensification of land uses may retain habitat features conducive to wild life diversity as well as produce commodities profitably.

Selected Publications

Thomas, V.G., Scheuhammer, A.M. and Bond, D. 2009. Bone lead levels and lead isotope ratios in red grouse from Scottish and Yorkshire moors. Science of the Total Environment 407: 3494-3502.

Thomas, V.G., Vásárhelyi, C, and Niimi A.J. 2009. Legislation and the capacity for rapid response management of nonindigenous species of fish in contiguous waters of Canada and the USA. Aquatic Conservation: Marine and Freshwater Ecosystems 19: 354-364.

Thomas, V.G., Roberts, M.J. and Harrison, P.T.C. 2009. Assessment of the environmental toxicity and carcinogenicity of tungsten-based shot. Ecotoxicology and Environmental Safety. 72: 1031-1037.

Thomas, V.G. and I. R. McGill. 2008. Dissolution of copper, tin, and iron from sintered tungsten-bronze spheres in a simulated avian gizzard, and an assessment of their potential toxicity to birds. Science of the Total Environment 394: 283-289.

Vásárhelyi, C. and Thomas, V.G. 2008. Reflecting ecological criteria in laws supporting the Baja to Bering Sea marine protected areas network case study. Environmental Science and Policy 11(5): 394-407.

Vásárhelyi, C. and V.G. Thomas. 2006. Evaluating the capacity of Canadian and American legislation to implement terrestrial protected areas networks. Environmental Science and Policy 9(1): 46-54.

Guitart, R. and V.G. Thomas. 2005. Es el plomo empleado en deportes (caza, tiro y pesca deportiva) un problem de salud publica infravalorado? Rev. Esp. Salud Publica 79: 621-632.

Darling, C.T.R. and V.G. Thomas. 2005. Lead bioaccumulation in earthworms, Lumbricus terrestris, from exposure to lead compounds of differing solubility. Science of the Total Environment 346: 70-80.

Thomas, V.G. and R. Guitart. 2005. Role of international conventions in promoting avian conservation through reduced lead toxicosis: progression towards a non-toxic agenda. Bird Conservation International 15: 147-160.

Vásárhelyi, C. and V.G.Thomas. 2003. Analysis of Canadian and American legislation for controlling exotic species in the Great Lakes. Aquatic Conservation: Marine and Freshwater Ecosystems 13: 417-427.

Thomas, V.G. and R. Guitart. 2003. Lead pollution from shooting and angling, and a common regulative approach. Environmental Law and Policy 33: 143-149.

Thomas, V.G. and R. Guitart. 2003. Evaluating non-toxic substitutes for lead shot and fishing weights: criteria and regulations. Environmental Policy and Law 33: 150-154.

Darling, C.T.R. and V.G. Thomas. 2003. The distribution of outdoor shooting ranges in Ontario and the potential for lead pollution of soil and water. Science of the Total Environment 313: 235-243.

Thomas, V. G. 2003. Harmonizing approval of non-toxic shot and sinkers in North America. Wildlife Society Bulletin 31(1): 292-295.

Guitart, R., Serratosa, J., and V.G. Thomas. 2002. Lead poisoned waterfowl in Spain: a significant threat for human consumers. Environmental Health Res. 12: 301-309.

Campbell, M.L. and V.G. Thomas. 2002. How the constitution affects conservation in Canada: effects of federalism on biodiversity protection. Environmental Policy and Law 32(5): 223-232.

Campbell, M.L. and V.G. Thomas. 2002. Protection and conservation of marine mammals in Canada: a case for legislative reform. Ocean and Coastal Law Journal 7(2): 221-258.

Books and Chapters in Books:

Thomas, V.G. 2009. Nontoxic shot ammunition: types, availability and use for upland game hunting. The Wildlife Professional, The Wildlife Society, Bethesda, MD. Vol. 3(2): 50-51.

Thomas, V.G. 2009. The policy and legislative dimensions of non-toxic shot and bullet use in North America. Pp. 351-362. In: R.T. Watson, M. Fuller, M. Pokras, and W. G. Hunt (eds.). Ingestion of Lead from Spent Ammunition: Implications for Wildlife and Humans. The Peregrine Fund, Boise, Idaho, USA. 383 pp.

Pain, D.J., Fisher, I.J. and V.G. Thomas. 2009. A global update of lead poisoning in terrestrial birds from ammunition sources. Pp. 99-118. In: R.T. Watson, M. Fuller, M. Pokras and W.G. Hunt (eds.). Ingestion of Lead from Spent Ammunition: Implications for Wildlife and Humans. The Peregrine Fund, Boise, Idaho, USA. 383 pp.

Campbell, M.L and V.G.Thomas. 2006. Implementing the Precautionary Approach: Towards enabling legislation for marine mammal conservation in Canada. Chapter 10, pp.321-333. In: D.M. Lavigne (ed.) Gaining Ground: In Pursuit of Ecological Sustainability. International Fund for Animal Welfare, Guelph, Canada, and University of Limerick, Ireland. 425pp.

Thomas, V.G. 2005. Introduction to Module II, Diminishing the Ecological Footprint. In: NABC 16: Agricultural Biotechnology: Finding Common International Goals. Edited by A. Eaglesham. National Agricultural Biotechnology Council. Ithica, New York.

ásárhelyi, C., V.G.Thomas, and A.J. Niimi. 2004. Analysis of legislation pertaining to the control and management of exotic aquatic species in Canadian and adjacent United States waters. Canadian Technical Report of Fisheries and Aquatic Sciences 2561. 39pp.

Chesworth, W., M.R. Moss and V.G.Thomas (Editors: Authorship alphabetical). 2004.The Human Ecological Footprint. Faculty of Environmental Sciences, University of Guelph, Guelph, ON.

Chesworth, W., Moss, M.R. and V.G. Thomas (Editors:Authorship alphabetical). 2002. Introduction: Clearing Away the Undergrowth. In: pp. i-v, Sustainable Development: Mandate or Mantra? Edited by W. Chesworth, M.R. Moss and V.G. Thomas. Faculty of Environmental Sciences, University of Guelph, Guelph, ON.

Vásárhelyi, C., V.G .Thomas and T.D. Nudds. 2002. Capacity of Ontario’s parks to sustain large carnivores. In: pp. 267-279, Proceedings of the 2001 Parks Research Forum of Ontario Edited by J. Porter and J.G. Nelson. Heritage Resources Centre, University of Waterloo, Waterloo, ON.

Campbell, M.L. and V.G. Thomas. 2002. Criteria for evaluating Protective Parks Legislation: How does Ontario measure up? In: pp. 139-150, Proceedings of the 2001 Parks Research Forum of Ontario. Edited by J. Porter and J.G. Nelson. Heritage Resources Centre, University of Waterloo, Waterloo, ON.

Campbell, M.L. (Supervised Grad. Stud.) and Y. Wiersma. 2002. A monitoring framework for Canada’s National Parks: assessing integrity across a system. In: pp. 196-212, Managing Protected Areas in a Changing World. Edited by S. Bondrop-Nielsen and N.W.P. Munro. Proc. Fourth Conf. On Sci. and Mgmt. of Protected Areas. Heritage Canada, Ottawa, ON.

Teaching

ZOO*1500 Humans in the Natural World - a Zoological Perspective
ZOO*4050 Natural Resources Policy
ZOO*4090 Ornithology
ZOO*4110 Principles of Fish And Wild Life Management