backResearcher Profile

Prof. D. Dudley Williams

Job Title: Professor of Zoology/Professor of Environmental Sciences
Employer: University of Toronto at Scarborough
Place of Birth: Laugharne, Wales, UK
High School attended: Dynevor Grammar School, Swansea, Wales
Further Education: University College of North Wales, Bangor, U.K. (B.Sc.), University of Liverpool, UK (Dip.Ed.), University of Waterloo (M.Sc., Ph.D.), University of Wales, UK (D.Sc.).
Geographic focus of research: Southern Ontario, Maritime Provinces, U.K., Trinidad, Barbados, U.S.

Brief synopsis of current research:
My research programme is diverse but has the overall, longterm objective of attempting to understand the ecological processes that control the distribution, formation, structure and dynamics of lotic animal communities. As control is believed to act hierarchically, this research involves study at the levels of community, population and individual, and immediate interests concern environmental heterogeneity and its effect on species richness and abundance. This is currently a focal point of research in ecology and nowhere is spatial-temporal variation greater than in running waters, as the communities of invertebrates that have evolved in concert with the unique patterns of physico-chemical variability typical of these habitats exhibit a range of traits that is most useful in testing modern ecological paradigms. For example, invertebrates in these habitats have evolved highly diverse life histories that are linked to environmental stability and adversity; we examine the role of these traits in community formation in a range of freshwater situations.



Recent Publications:

Williams, D.D. & N.E. Williams. 1999. Canadian Springs: postglacial development of the invertebrate fauna. pp. 447-467. In: Invertebrates in Freshwater Wetlands of North America: Ecology and Management (D.P. Batzer, R. Rader, & S.A. Wissinger, eds) John Wiley & Sons, N.Y. 1100 pp.

Fraser, B.G. & D.D. Williams. 1998. Seasonal boundary dynamics of a groundwater/ surface water ecotone. Ecology 79: 2019-2031.

Tavares-Cromar, A.F. & D.D. Williams. 1996. The importance of temporal resolution in food web analysis: evidence from a detritus-based stream. Ecol. Monogr. 66: 91-113.

Hogg, I.D. & D.D. Williams. 1996. Response of stream invertebrates to a global warming thermal regime: an ecosystem-level manipulation. Ecology 77: 395-407.

Williams, D.D. & B.W. Feltmate 1992. Aquatic Insects. C.A.B. International, Wallingford, Oxford. 358 pp. (Reprinted in 1994)

Always loved paddling about in water and turning over rocks as a child!