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Publications by J.R. Spence

66 records.

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Diversity, species richness, and abundance of spiders (Araneae) in different strata of boreal white spruce stands.
Pinzon, J.; Spence, J.R.; Langor, D.W.
Year: 2013    Catalog ID: 34372
Available from: Northern Forestry Centre
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Available from the Journal's Web site.
DOI: 10.4039/tce.2012.93
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Responses of ground-dwelling spiders (Araneae) to variable retention harvesting practices in the boreal forest.
Pinzon, J.; Spence, J.R.; Langor, D.W.
Year: 2012    Catalog ID: 33393
Available from: Northern Forestry Centre
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Available from the Journal's Web site.
DOI: 10.1016/j.foreco.2011.10.045
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Landscape patterns of species-level association between ground-beetles and overstory trees in boreal forests of western Canada (Coleoptera, Carabidae). (Open Access)
Bergeron, J.A.C. (Colin); Spence, J.R.; Volney, W.J.A.
Year: 2011    Catalog ID: 32931
Available from: Northern Forestry Centre
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Available from the Journal's Web site.
DOI: 10.3897/zookeys.147.2098
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Spider assemblages in the overstory, understory, and ground layers of managed stands in the western boreal mixedwood forest of Canada.
Pinzon, J.; Spence, J.R.; Langor, D.W.
Year: 2011    Catalog ID: 32674
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Effects of postfire salvage logging on deadwood-associated beetles
Cobb, T.P.; Morissette, J.L.; Jacobs, J.; Koivula, M.; Spence, J.R.; Langor, D.W.
Year: 2010    Catalog ID: 32088
Available from: Northern Forestry Centre
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How retention patches influence biodiversity in cutblocks
Pyper, M.; Spence, J.R.; Langor, D.W.
Year: 2010    Catalog ID: 31952
Available from: Northern Forestry Centre
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Comment les parcelles de rétention influent sur la biodiversité dans les blocs de coupe
Pyper, M.; Spence, J.R.; Langor, D.W.
Year: 2010    Catalog ID: 31953
Available from: Northern Forestry Centre
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High levels of green-tree retention are required to preserve ground beetle biodiversity in boreal mixedwood forests
Work, T.T.; Jacobs, J.; Spence, J.R.; Volney, W.J.A.
Year: 2010    Catalog ID: 31555
Available from: Northern Forestry Centre
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Regeneration of Populus nine years after variable retention harvest in boreal mixedwood forests
Gradowski, T.; Lieffers, V.J.; Landhäusser, S.M.; Sidders, D.M.; Volney, W.J.A.; Spence, J.R.
Year: 2010    Catalog ID: 30990
Available from: Northern Forestry Centre
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Régénération de l'épinette et du tremble après des coupes à rétention variable sur les sites du projet EMEND
Lieffers, V.J.; Sidders, D.M.; Gradowski, T.; Landhäusser, S.M.; Frey, B.R.; Munson, A.D.; Keddy, T.J.; Volney, W.J.A.; Spence, J.R.; Blenis, P.V.
Year: 2009    Catalog ID: 31980
Available from: Northern Forestry Centre
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Spruce and aspen regeneration following variable retention harvests at EMEND
Lieffers, V.J.; Sidders, D.M.; Gradowski, T.; Landhäusser, S.M.; Frey, B.R.; Munson, A.D.; Keddy, T.J.; Volney, W.J.A.; Spence, J.R.; Blenis, P.V.
Year: 2009    Catalog ID: 31585
Available from: Northern Forestry Centre
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Using classification tree analysis to reveal causes of mortality in an insect population
MacQuarrie, C.J.K.; Spence, J.R.; Langor, D.W.
Year: 2009    Catalog ID: 31398
Available from: Great Lakes Forestry Centre
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Available from the Journal's Web site.
DOI: 10.1111/j.1461-9563.2009.00460.x
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Wood-feeding beetles and soil nutrient cycling in burned forests: implications of post-fire salvage logging.
Cobb, T.P.; Hannam, K.D.; Kishchuk, B.E.; Langor, D.W.; Quideau, S.A.; Spence, J.R.
Year: 2009    Catalog ID: 30267
Available from: Northern Forestry Centre
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Current status of invasive alien birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Canada, with keys to species
Digweed, S.C.; MacQuarrie, C.J.K.; Langor, D.W.; Williams, D.J.M.; Spence, J.R.; Nystrom, K.L.; Morneau, L.
Year: 2009    Catalog ID: 29615
Available from: Northern Forestry Centre
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Conservation of forest-dwelling arthropod species: simultaneous management of many small and heterogeneous risks
Spence, J.R.; Langor, D.W.; Jacobs, J.; Work, T.T.; Volney, W.J.A.
Year: 2008    Catalog ID: 28961
Available from: Northern Forestry Centre
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Evaluation of carabid beetles as indicators of forest change in Canada
Work, T.T.; Kolvula, M.; Klimaszewski, J.; Langor, D.W.; Spence, J.R.; Sweeney, J.D.; Hébert, C.
Year: 2008    Catalog ID: 28875
Available from: Northern Forestry Centre
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Saproxylic insect assemblages in Canadian forests: diversity, ecology, and conservation.
Langor, D.W.; Hammond, H.E.J.; Spence, J.R.; Jacobs, J.; Cobb, T.P.
Year: 2008    Catalog ID: 28876
Available from: Northern Forestry Centre
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Foreword to Maintaining arthropods in northern forest ecosystems: symposium proceedings
Langor, D.W.; Spence, J.R.
Year: 2008    Catalog ID: 28877
Available from: Northern Forestry Centre
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Variable retention harvest of white spruce stands and saproxylic beetle assemblages
Jacobs, J.; Spence, J.R.; Langor, D.W.
Year: 2007    Catalog ID: 27512
Available from: Northern Forestry Centre
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Biodiversity and multiple disturbances: boreal forest ground beetle (Coleoptera: Carabidae) responses to wildfire, harvesting, and herbicide.
Cobb, T.P.; Langor, D.W.; Spence, J.R.
Year: 2007    Catalog ID: 27439
Available from: Northern Forestry Centre
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Available from the Journal's Web site.
DOI: 10.1139/X06-310
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Rove beetles and ground beetles (Coleoptera: Staphylinidae, Carabidae) as indicators of harvest and regeneration practices in western Canadian foothills forests
Pohl, G.R.; Langor, D.W.; Spence, J.R.
Year: 2007    Catalog ID: 26899
Available from: Northern Forestry Centre
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Influence of boreal forest succession and dead wood qualities on saproxylic beetles
Jacobs, J.; Spence, J.R.; Langor, D.W.
Year: 2007    Catalog ID: 26722
Available from: Northern Forestry Centre
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Maintaining saproxylic insects in Canada's extensively managed boreal forests: a review
Langor, D.W.; Spence, J.R.; Hammond, H.E.J.; Jacobs, J.; Cobb, T.P.
Year: 2006    Catalog ID: 26513
Available from: Northern Forestry Centre
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Arthropods as ecological indicators of sustainability in Canadian forests
Langor, D.W.; Spence, J.R.
Year: 2006    Catalog ID: 26238
Available from: Northern Forestry Centre
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Spruce beetle (Coleoptera: Scolytidae) parasitoids: cephalic morphology of larvae and a key to species (Hymenoptera: Braconidae, Pteromalidae).
Wesley, J.; Williams, D.J.M.; Langor, D.W.; Spence, J.R.
Year: 2006    Catalog ID: 26038
Available from: Northern Forestry Centre
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Arthropod responses to harvesting and wildfire: Implications for emulation of natural disturbance in forest management
Buddle, C.M.; Langor, D.W.; Pohl, G.R.; Spence, J.R.
Year: 2006    Catalog ID: 25952
Available from: Northern Forestry Centre
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Moths and butterflies (Lepidoptera) of the boreal mixedwood forest near Lac La Biche, Alberta, including new provincial records
Pohl, G.R.; Langor, D.W.; Landry, J.-F.; Spence, J.R.
Year: 2004    Catalog ID: 26103
Available from: Northern Forestry Centre
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Lepidoptera from the boreal mixedwood forest in east-central Alberta: comparison of assemblages from a mature stand and an old stand
Lepidoptera from the boreal mixedwood forest in east-central Alberta: comparison of assemblages from a mature stand and an old stand
Pohl, G.R.; Langor, D.W.; Landry, J.-F.; Spence, J.R.
Year: 2004    Catalog ID: 25002
Available from: Northern Forestry Centre
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Harvest retention patches are insufficient as stand analogues of fire residuals for litter-dwelling beetles in northern coniferous forests
Gandhi, K.J.K.; Spence, J.R.; Cryer, K.J.; Langor, D.W.; Morgantini, L.E.
Year: 2004    Catalog ID: 24624
Available from: Northern Forestry Centre
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Short-term impact of forest soil compaction and organic matter removal on soil mesofauna density and oribatid mite diversity
Battigelli, J.P.; Spence, J.R.; Langor, D.W.; Berch, S.M.
Year: 2004    Catalog ID: 24562
Available from: Northern Forestry Centre
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Stand composition and structure of the boreal mixedwood and epigaeic arthropods of the Ecosystem Management Emulating Natural Disturbance (EMEND) landbase in northwestern Alberta.
Work, T.T.; Shorthouse, D.P.; Spence, J.R.; Volney, W.J.A.; Langor, D.W.
Year: 2004    Catalog ID: 24301
Available from: Northern Forestry Centre
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Saproxylic beetles (Coleoptera) using Populus in boreal aspen stands of western Canada: spatiotemporal variation and conservation of assemblages
Hammond, H.E.J.; Langor, D.W.; Spence, J.R.
Year: 2004    Catalog ID: 24172
Available from: Northern Forestry Centre
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Arthropods as ecological indicators of disturbance in forest ecosystems.
Langor, D.W.; Spence, J.R.
Year: 2003    Catalog ID: 24186
Available from: Northern Forestry Centre
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Sustainable forest management as license to think and to try something different
Work, T.T.; Spence, J.R.; Volney, W.J.A.; Burton, P.J.
Year: 2003    Catalog ID: 24091
Available from: Northern Forestry Centre
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Integrating biodiversity and forestry practices in western Canada.
Work, T.T.; Spence, J.R.; Volney, W.J.A.; Morgantini, L.E.; Innes, J.L.
Year: 2003    Catalog ID: 23477
Available from: Northern Forestry Centre
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Biological control of the ambermarked birch leafminer, Profenusa thomsoni (Hymenoptera: Tenthredinidae), in Alberta
Biological control of the ambermarked birch leafminer, Profenusa thomsoni (Hymenoptera: Tenthredinidae), in Alberta
Digweed, S.C.; McQueen, R.L.; Spence, J.R.; Langor, D.W.
Year: 2003    Catalog ID: 22823
Available from: Northern Forestry Centre
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Fenusa pusilla (Lepeletier), Birch Leafminer, and Profenusa thomsoni (Konow), Ambermarked Birch Leafminer (Hymenoptera: Tenthredinidae).
Langor, D.W.; Digweed, S.C.; Spence, J.R.
Year: 2002    Catalog ID: 20401
Available from: Northern Forestry Centre
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Fire residuals as habitat reserves for epigaeic beetles (Coleoptera: Carabidae and Staphylinidae).
Gandhi, K.J.K.; Spence, J.R.; Langor, D.W.; Morgantini, L.E.
Year: 2001    Catalog ID: 19057
Available from: Northern Forestry Centre
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Boreal Odyssey
Boreal Odyssey
Volney, W.J.A.; Spence, J.R.; Lefebvre, E.M.
Year: 2001    Catalog ID: 19061
Available from: Northern Forestry Centre
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Early colonization of Populus wood by saproxylic beetles (Coleoptera)
Hammond, H.E.J.; Langor, D.W.; Spence, J.R.
Year: 2001    Catalog ID: 18568
Available from: Northern Forestry Centre
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Ecosystem Management Emulating Natural Disturbance: Research Study and Field Guide
Ecosystem Management Emulating Natural Disturbance: Research Study and Field Guide
Sidders, D.M.; Spence, J.R.
Year: 2000    Catalog ID: 24734
Available from: Northern Forestry Centre
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Succession of boreal forest spider assemblages following wildfire and harvesting
Buddle, C.M.; Spence, J.R.; Langor, D.W.
Year: 2000    Catalog ID: 18169
Available from: Northern Forestry Centre
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Establishment and spread of two introduced parasitoids (Ichneumonidae) of the birch leafminer, Fenusa pusilla (Tenthredinidae).
Langor, D.W.; Digweed, S.C.; Williams, D.J.M.; Spence, J.R.; Saunders, C.
Year: 2000    Catalog ID: 18187
Available from: Northern Forestry Centre
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The succession of litter-dwelling, arthropod communities following disturbance by harvesting and wildfire
Buddle, C.M.; Spence, J.R.; Langor, D.W.; Pohl, G.R.
Year: 1999    Catalog ID: 20408
Available from: Northern Forestry Centre
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Fire-skips and carabid beetles of northern rockies: “natural lessons” for the forest industry
Gandhi, K.J.K.; Spence, J.R.; Langor, D.W.; Morgantini, L.E.
Year: 1999    Catalog ID: 20407
Available from: Northern Forestry Centre
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Assessing components of ecosystem integrity in the EMEND experiment
Volney, W.J.A.; Spence, J.R.; Weber, M.G.; Langor, D.W.; Mallett, K.I.; Johnson, J.D.; Edwards, I.K.; Hillman, G.R.; Kishchuk, B.E.
Year: 1999    Catalog ID: 18698
Available from: Northern Forestry Centre
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A silvicultural experiment to mitigate pest damage
Volney, W.J.A.; Hammond, H.E.J.; Maynard, D.G.; MacIsaac, D.A.; Mallett, K.I.; Langor, D.W.; Johnson, J.D.; Pohl, G.R.; Kishchuk, B.E.; Gladders, B.; Avery, B.; Chemago, R.; Hoffman, T.; Chorney, M.; Luchkow, S.A.; Maximchuk, M.; Spence, J.R.
Year: 1999    Catalog ID: 18699
Available from: Northern Forestry Centre
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Invertebrate biodiversity, forestry and emulation of natural disturbance
Spence, J.R.; Buddle, C.M.; Gandhi, K.J.K.; Langor, D.W.; Volney, W.J.A.; Hammond, H.E.J.; Pohl, G.R.
Year: 1999    Catalog ID: 18688
Available from: Northern Forestry Centre
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The Alberta EMEND project: recipe and cooks’ argument.
Spence, J.R.; Volney, W.J.A.; Lieffers, V.J.; Weber, M.G.; Luchkow, S.A.; Vinge, T.W.
Year: 1999    Catalog ID: 18689
Available from: Northern Forestry Centre
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Intrinsic development rate of spruce budworm (Lepidoptera: Tortricidae) across a gradient of latitude
Weber, J.D.; Volney, W.J.A.; Spence, J.R.
Year: 1999    Catalog ID: 18546
Available from: Northern Forestry Centre
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Budbreak phenology and natural enemies mediate survival of first-instar forest tent caterpillar (Lepidoptera: Lasiocampidae)
Parry, D.; Spence, J.R.; Volney, W.J.A.
Year: 1998    Catalog ID: 18784
Available from: Northern Forestry Centre
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Beetle abundance and diversity in a boreal mixed-wood forest
Spence, J.R.; Langor, D.W.; Hammond, H.E.J.; Pohl, G.R.
Year: 1997    Catalog ID: 18856
Available from: Northern Forestry Centre
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Responses of natural enemies to experimentally increased populations of the forest tent caterpillar, Malacosoma disstria
Parry, D.; Spence, J.R.; Volney, W.J.A.
Year: 1997    Catalog ID: 18843
Available from: Northern Forestry Centre
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Exotic birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Alberta
Digweed, S.C.; Spence, J.R.
Year: 1997    Catalog ID: 18810
Available from: Northern Forestry Centre
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Where have all the birch leafminers gone?
Langor, D.W.; Digweed, S.C.; McQueen, R.L.; Spence, J.R.
Year: 1996    Catalog ID: 20940
Available from: Northern Forestry Centre
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Biodiversity: threatened and endangered species
Spence, J.R.; Langor, D.W.
Year: 1996    Catalog ID: 20405
Available from: Northern Forestry Centre
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Northern forestry and carabids
Spence, J.R.; Langor, D.W.; Niemelä, J.; Cárcamo, H.A.; Currie, C.R.
Year: 1996    Catalog ID: 18933
Available from: Northern Forestry Centre
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Biology and life history of Eupuraea obliquus Hatch (Coleoptera: Nitidulidae) on western gall rust
Currie, C.R.; Spence, J.R.; Volney, W.J.A.
Year: 1996    Catalog ID: 18900
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Biological control of western gall rust
Currie, C.R.; Hiratsuka, Y.; Spence, J.R.; Volney, W.J.A.
Year: 1995    Catalog ID: 18978
Available from: Northern Forestry Centre
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Birch-leafmining sawflies
Langor, D.W.; Digweed, S.C.; McQueen, R.L.; Spence, J.R.
Year: 1994    Catalog ID: 20967
Available from: Northern Forestry Centre
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Hakkuun vaikutukset havumetsän maakiitäjäisiin kahdella mantereella [The effects of clear-cutting on ground-beetle assemblages (in the Canadian and Finnish boreal forests) - English translation provided].
Niemelä, J.; Spence, J.R.; Langor, D.W.; Haila, Y.; Tukia, H.
Year: 1994    Catalog ID: 20406
Available from: Northern Forestry Centre
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Insect biodiversity studies in the boreal forests of Alberta, Canada
Langor, D.W.; Spence, J.R.; Niemelä, J.; Cárcamo, H.A.
Year: 1994    Catalog ID: 19091
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Logging and boreal ground-beetle assemblages on two continents: implications for conservation
Niemelä, J.; Spence, J.R.; Langor, D.W.; Haila, Y.; Tukia, H.
Year: 1993    Catalog ID: 20403
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Effects of clear-cut harvesting on boreal ground-beetle assemblages (Coleoptera: Carabidae) in western Canada
Niemelä, J.; Langor, D.W.; Spence, J.R.
Year: 1993    Catalog ID: 11296
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Host effects on allozyme and morphological variation of the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae)
Langor, D.W.; Spence, J.R.
Year: 1991    Catalog ID: 11261
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Host effects on fertility and reproductive success of Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae)
Langor, D.W.; Spence, J.R.; Pohl, G.R.
Year: 1990    Catalog ID: 11262
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This may not be a complete list of the author's publications. This list provides the author's publications since he or she joined, or worked in cooperation with, the CFS. When available, another link is provided for periods of work elsewhere.