October 23, 2020  

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Timothy Work

Timothy Work obtained a B.Sc. (Hope College 1993), a master in Entomology, Ecology and Evolution (Michigan State University 1996) and a Ph.D. (2000) in Entomology from Oregon State University. He completed his postdoctoral training at University of Alberta. He worked as a research scientist at the Centre de recherches écologiques (Université de Montréal) before joining the Université du Québec à Montréal as a professor in the department of biological sciences in 1985. Since 1998 he is also professor at Université du Quebec in Abitibi-Témiscamingue in the Applied sciences department. His work has to do with both fundamental and applied research. Most of his work in fundamental research is on ecosystem dynamics, more specifically the boreal forest. The more applied research includes the use of ecological knowledge for silviculture and forest management. Dr. Bergeron held a Canadian Research Chair in Forest Ecology and Management. He is a member of the Interuniversity Research Group in Forest Ecology (GREFi), an associated professor at University of Northern Brithish Columbia (UNBC) and is director of the NSERC/UQAT/UQAM Industrial Chair in Sustainable Forest Management.

Research orientation

Studies on ecosystem dynamics

By way of field and lab work, the aim is to better understand the ecological factors responsible for the distribution and dynamics of forest stands. One approach is to study the relationship between abiotic components of the environment (climate, geomorphology, soils) and the distribution of different species or plant communities. Others include historical reconstitution and characterization of natural and anthropic disturbance regimes (fire, windthrow, insect outbreak) affecting forest ecosystem. The determination of demographic structures of species allows a fuller understanding of the relationship between disturbance regimes and the regeneration and succession mechanisms of forest stands.

Dendrochronology (dating method that uses annual growth rings of trees) is the mostly used lab technique. It allows age determination of stems and dating of punctual events such as fires or fluctuations of water levels when looking at scars. It is also used to evaluate the effect of climate (dendroclimatology) and other parameters on radial growth of trees.

Some examples of studies carried out or currently in progress: Jack pine and red pine stand dynamics following fire, historical reconstitution of fire regimes in Abitibi, the influence of water levels fluctuations on black ash stand dynamics, reconstitution by dendroclimatology of over 800 years for white cedar. Growth and dynamics of tree species at their northern limit of distribution.

Applications to silviculture and forest management

The objective is to establish the relationship between the ecological information we have on natural forest ecosystems and the different interventions for timber harvest. The preferred approach is to find out how stand and landscape silvicultural operations can emulate natural disturbances. Studies mostly concern the effect of forest management on ecosystem biodiversity and resilience. This work is done in collaboration with government agencies and the industry, in particular the activities of the NSERC/UQAT/UQAM Industrial Chair in Sustainable Forest Management and the Research Forest of Duparquet Lake (FERLD).

Some examples of studies carried out or currently in progress: Characterization of the biodiversity in old growth forests; Comparison of the effects of fire and harvest on resilience and plant diversity of forest ecosystems; Impact of intensive forestry on biodiversity.

M.Sc. and Ph.D. positions available

I am currently looking for M.Sc. students to work on a project which will look at insect biodiversity and the importance of coarse woody debris in managed and unmanaged forest in northern Québec Please navigate to Jobs section for further information.

Email : work.timothy[at]uqam.ca

Publications : (see complete list)

  1. David Gervais, David Greene, Timothy Work, 2012. Causes of variation in wood-boring beetle damage in fire-killed black spruce (Picea mariana) forests in the central boreal forest of Quebec Ecoscience 19(4):398-403

  2. A.M. Liebhold, Timothy Work, D.G. McCullough, J.F. Cavey, 2006. Airline Baggage as a Pathway for Alien Insect Species Invading the United States. American Entomologist 53(1):48-54.

  3. D.G. McCullough, Timothy Work, J.F. Cavey, A.M. Liebhold, D. Marshall, 2006. Interceptions of nonindigenous plant pests at US ports of entry and border crossings over a 17-year period. Biological Invasions 8(4):611-630.

  4. J. Klimaszewski, G. Pelletier, C. Germain, Timothy Work, C. Hebert, 2006. Review of Oxypoda species in Canada and Alaska (Coleoptera, Staphylinidae, Aleocharinae): Systematics, bionomics, and distribution. Canadian Entomologist 138(6):737-852.

  5. J. Klimaszewski, D.W. Langer, Timothy Work, G. Pelletier, H.E.J. Hammond, C. Germain, 2005. The effects of patch harvesting and site preparation on ground beetles (Coleoptera, Carabidae) in yellow birch dominated forests of southeastern Quebec. Can. J. For. Res. 35(11):2616-2628.

  6. Timothy Work, D.G. McCullough, J.F. Cavey, R. Komsa, 2005. Arrival rate of nonindigenous insect species into the United States through foreign trade. Biological Invasions 7(2):323-332.

(d) = Supervisor; (c) = Co-supervisor

◊ Gabriel Ventas (c)

(d) = Supervisor; (c) = Co-supervisor

◊ Lauren Egli (d)

◊ Samuel Gladu (d)

◊ Florent Renault (d)

(d) = Supervisor; (c) = Co-supervisor

◊ Alexis Brodeur (d)

Graduated Ph.D.
(d) = Supervisor; (c) = Co-supervisor

◊ Jenna Jacobs (d) 2014

◊ Klara Joelsson (c) 2017

◊ Pierre-Marc Brousseau (c) 2017

Graduated M.Sc.
(d) = Supervisor; (c) = Co-supervisor

◊ Cédric Boué (d) 2018

◊ Luana Graham-Sauvé (d) 2012

◊ Félix Longpré (d) 2011

◊ Simon Paradis (d) 2010

◊ Annie Hibbert (d) 2010

◊ Kit O'Connor (d) 2009

◊ David Gervais (c) 2010

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