John R Spence

Professor Emeritus, Faculty of Agricultural, Life and Environmental Sci - Renewable Resources Dept

Contact

Professor Emeritus, Faculty of Agricultural, Life and Environmental Sci - Renewable Resources Dept
Email
john.spence@ualberta.ca
Phone
(780) 492-1426
Address
230D Earth Sciences Building
11223 Saskatchewan Drive NW
Edmonton AB
T6G 2E3

Overview

About

Job/Research Area: Ecology, conservation and evolutionary biology


Research

Major Responsibilities/Research Interests: Ecosystem-based forest management and agroforestry systems; effects of natural and anthropogenic disturbances on forest invertebrate populations and communities and their contributions to ecosystem function; forest insect pest management, especially the contribution of host defenses to natural resistance; spread, distribution and impacts of introduced, invasive species; arthropod life-history strategies; natural hybridization between insect species and its evolutionary significance; and the biology and systematics of carabid beetles, gerromorphan bugs and pisaurid spiders.

Publications

Ecosystem classification and inventory maps as surrogates for ground beetle assemblages in boreal forest
Author(s): Bergeron, JAC, FG Blanchet, JR Spence & WJA Volney
Publication Date: 2012
Publication: Journal of Plant Ecology
Volume: 5
Page Numbers: 97-108

Bellography: Ross & Joyce Bell: Life and contributions of Ross and Joyce Bell, two New England Naturalists
Author(s): Spence, JR, GE Ball, RL Davidson & J Rykken
Publication Date: 2011
Publication: ZooKeys
Volume: 147
Page Numbers: 3-14

Landscape patterns of species-level associations between ground-beetles (Coleoptera: Carabidae) and overstorey trees in boreal forests of western Canada
Author(s): Bergeron, JAC, JR Spence & WJA Volney. 2011
Publication Date: 2011
Publication: ZooKeys
Volume: 147
Page Numbers: 577-600

Low intensity surface fire instigates movement by Calosoma frigidum (Coleoptera: Carabidae)
Author(s): Jacobs, JM, JAC Bergeron, TT Work & JR Spence
Publication Date: 2011
Publication: ZooKeys
Volume: 147
Page Numbers: 641-650

Spider assemblages in three layers of aspen and white spruce managed stands in the boreal mixedwood forest
Author(s): Pinzón, J, JR Spence & DW Langor
Publication Date: 2011
Publication: Environmental Entomology
Volume: 40
Page Numbers: 797-808

Wing-dimorphism and expansion of Pterostichus melanarius Ill. Populations at small and large scales in central Alberta, Canada
Author(s): Bourassa, S, JR Spence, DJ Hartley & Seung-Il Lee
Publication Date: 2011
Publication: ZooKeys
Volume: 147
Page Numbers: 545-558

Current status of invasive birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Canada, with keys to species
Author(s): Digweed, SD; MacQuarrie, CJK; Langor, DW; Williams, DJM; Spence, JR.
Publication Date: 2009
Publication: The Canadian Entomologist
Volume: 141
Page Numbers: 201-235

Regeneration of Populus nine years after variable retention harvest in boreal mixedwood forests
Author(s): Gradowski, T; Lieffers, VJ; Landhäusser, SM; Sidders, D; Volney, J; Spence, JR.
Publication Date: 2009
Publication: Forest Ecology & Management
Volume: 259
Page Numbers: 283-289

Biodiversity and multiple disturbances: boreal forest ground beetle (Coleoptera: Carabidae) responses to harvesting, silviculture and wildfire
Author(s): Cobb, T.P., D.W. Langor and J.R. Spence
Publication Date: 2007
Publication: Can. J. For. Res.
Volume: 37
Page Numbers: 1310-1323

Physical Effects of Weather Events on the Abundance and Diversity of Forest Insects in North American Forests (including the Caribbean but excluding Mexico).
Author(s): Gandhi, KJK; Gilmore, DW; Katovich, SA; Mattson, WJ; Spence, JR; Seybold, SJ.
Publication Date: 2007
Publication: Environmental Reviews
Volume: 15
Page Numbers: 113-152

Saproxylic beetles using Populus in the boreal mixedwood of western Canada: spatio-temporal variation and conservation of assemblages
Author(s): Hammond, HEJ, DW Langor & JR Spence
Publication Date: 2004
Publication: Canadian Journal of Forest Research
Volume: 34
Page Numbers: 1-19

Fire-residuals as habitat reserves for epigaeic beetles (Coleoptera: Carabidae and Staphylinidae)
Author(s): Gandhi, KJK, JR Spence, DW Langor & LE Morgantini
Publication Date: 2001
Publication: Biological Conservation
Volume: 102
Page Numbers: 131-141

Introgressive hybridization between two species of waterstriders (Hemiptera: Gerridae: Limnoporus): geographic structure and temporal change of a hybrid zone
Author(s): Klingenberg, CP, JR Spence and C. K. Mirth
Publication Date: 2000
Publication: Journal of Evolutionary Biology
Volume: 13
Page Numbers: 756-765

Seasonal aspects of flight in water striders (Hemiptera: Gerridae)
Author(s): Spence, JR
Publication Date: 2000
Publication: Entomological Science
Volume: 3
Page Numbers: 399-417

Succession of boreal spider assemblages following wildfire and harvesting
Author(s): Buddle, CM, JR Spence & DW Langor
Publication Date: 2000
Publication: Ecography
Volume: 23
Page Numbers: 424-436