| Publications 1990-1999 |
Volney, WJA; Hammond, HEJ; Maynard, DG; MacIsaac, DA; Mallett, KI; Langor, DW; Johnson, JD; Pohl, GR; Kishchuk, B; Gladders, B; Avery, B; Chemago, R; Hoffman, T; Chorney, M; Luchkow, S; Maximchuk, M; Spence, JR. 1999. A silvicultural experiment to mitigate pest damage. FORESTRY CHRONICLE 75 (3): 461-465.
Weber, JD; Volney, WJA; Spence, JR. 1999. Intrinsic development rate of spruce budworm (Lepidoptera : Tortricidae) across a gradient of latitude. ENVIRONMENTAL ENTOMOLOGY 28 (2): 224-232.
Parry, D; Spence, JR; Volney, WJA. 1998. Budbreak phenology and natural enemies mediate survival of first-instar forest tent caterpillar (Lepidoptera : Lasiocampidae). ENVIRONMENTAL ENTOMOLOGY 27 (6): 1368-1374.
Ogol, CKPO; Spence, JR; Keddie, A. 1998. Natural enemy abundance and activity in a maize-leucaena agroforestry system in Kenya. ENVIRONMENTAL ENTOMOLOGY 27 (6): 1444-1451.
Zimmermann, M; Spence, JR. 1998. Phenology and life-cycle regulation of the fishing spider Dolomedes triton Walckenaer (Araneae, Pisauridae) in central Alberta. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE 76 (2): 295-309.
Niemela, J; Spence, JR; Carcamo, H. 1997. Establishment and interactions of carabid populations: an experiment with native and introduced species. ECOGRAPHY 20 (6): 643-652.
Sperling, FAH; Spence, JR; Andersen, NM. 1997. Mitochondrial DNA, allozymes, morphology, and hybrid compatibility in Limnoporus water striders (Heteroptera: Gerridae): Do they all track species phylogenies?. ANNALS OF THE ENTOMOLOGICAL SOCIETY OF AMERICA 90 (4): 401-415.
Clark, MS; Gage, SH; Spence, JR. 1997. Habitats and management associated with common ground beetles (Coleoptera: Carabidae) in a Michigan agricultural landscape. ENVIRONMENTAL ENTOMOLOGY 26 (3): 519-527.
Digweed, SC; Spence, JR; Langor, DW. 1997. Exotic birch-leafmining sawflies (Hymenoptera: Tenthredinidae) in Alberta: Distributions, seasonal activities, and the potential for competition. CANADIAN ENTOMOLOGIST 129 (2): 319-333.
Klingenberg, CP; Leigh, RHB; Keddie, BA; Spence, JR. 1997. Influence of gut parasites on growth performance in the water strider Gerris buenoi (Hemiptera: Gerridae). ECOGRAPHY 20 (1): 29-36.
Klingenberg, CP; Spence, JR. 1997. On the role of body size for life-history evolution. ECOLOGICAL ENTOMOLOGY 22 (1): 55-68.
Parry, D; Spence, JR; Volney, WJA. 1997. Responses of natural enemies to experimentally increased populations of the forest tent caterpillar, Malacosoma disstria. ECOLOGICAL ENTOMOLOGY 22 (1): 97-108.
Spence, JR; Langor, DW; Niemela, J; Carcamo, HA; Currie, CR. 1996. Northern forestry and carabids: The case for concern about old-growth species (vol 33, pg 173, 1996). ANNALES ZOOLOGICI FENNICI 33 (2): 302-302.
Spence, JR; Langor, DW; Niemela, J; Carcamo, HA; Currie, CR. 1996. Northern forestry and carabids: The case for concern about old-growth species. ANNALES ZOOLOGICI FENNICI 33 (1): 173-184.
Spence, JR; Zimmermann, M; Wojcicki, JP. 1996. Effects of food limitation and sexual cannibalism on reproductive output of the nursery web spider Dolomedes triton (Araneae: Pisauridae). OIKOS 75 (3): 373-382.
Klingenberg, CP; Spence, JR. 1996. Impacts of predation and intracohort cannibalism in the water strider Gerris buenoi (Heteroptera: Gerridae). OIKOS 75 (3): 391-397.
Currie, CR; Spence, JR; Niemela, J. 1996. Competition, cannibalism and intraguild predation among ground beetles (Coleoptera: Carabidae): A laboratory study. COLEOPTERISTS BULLETIN 50 (2): 135-148.
Currie, CR; Spence, JR; Volney, WJA. 1996. Biology and life history of Epuraea obliquus Hatch (Coleoptera: Nitidulidae) on western gall rust. CANADIAN ENTOMOLOGIST 128 (2): 177-186.
Digweed, SC; Currie, CR; Carcamo, HA; Spence, JR. 1995. Digging out the ''digging-in effect'' of pitfall traps: Influences depletion and disturbance on catches of ground beetles (Coleoptera: Carabidae). PEDOBIOLOGIA 39 (6): 561-576.
CARCAMO, HA; NIEMALA, JK; SPENCE, JR. 1995. FARMING AND GROUND BEETLES - EFFECTS OF AGRONOMIC PRACTICE ON POPULATIONS AND COMMUNITY STRUCTURE. CANADIAN ENTOMOLOGIST 127 (1): 123-140.
CARCAMO, HA; SPENCE, JR. 1994. KIN DISCRIMINATION AND CANNIBALISM IN WATER STRIDERS (HETEROPTERA, GERRIDAE) - ANOTHER LOOK. OIKOS 70 (3): 412-416.
BALL, GE; SPENCE, JR; HEMING, BS. 1994. BALLS CIRCLE - A MERRY-GO-ROUND IN SYSTEMATICS - INTRODUCTION. CANADIAN ENTOMOLOGIST 126 (3): 449-452.
SPENCE, JR; NIEMELA, JK. 1994. SAMPLING CARABID ASSEMBLAGES WITH PITFALL TRAPS - THE MADNESS AND THE METHOD. CANADIAN ENTOMOLOGIST 126 (3): 881-894.
NIEMELA, JK; SPENCE, JR. 1994. DISTRIBUTION OF FOREST DWELLING CARABIDS (COLEOPTERA) - SPATIAL SCALE AND THE CONCEPT OF COMMUNITIES. ECOGRAPHY 17 (2): 166-175.
CARCAMO, HA; SPENCE, JR. 1994. CROP TYPE EFFECTS ON THE ACTIVITY AND DISTRIBUTION OF GROUND BEETLES (COLEOPTERA, CARABIDAE). ENVIRONMENTAL ENTOMOLOGY 23 (3): 684-692.
KLINGENBERG, CP; SPENCE, JR. 1993. HETEROCHRONY AND ALLOMETRY - LESSONS FROM THE WATER STRIDER GENUS LIMNOPORUS. EVOLUTION 47 (6): 1834-1853.
SPENCE, JR; ANDERSEN, NM. 1994. BIOLOGY OF WATER STRIDERS - INTERACTIONS BETWEEN SYSTEMATICS AND ECOLOGY. ANNUAL REVIEW OF ENTOMOLOGY 39: 101-128.
NIEMELA, J; LANGOR, D; SPENCE, JR. 1993. EFFECTS OF CLEAR-CUT HARVESTING ON BOREAL GROUND-BEETLE ASSEMBLAGES (COLEOPTERA, CARABIDAE) IN WESTERN CANADA. CONSERVATION BIOLOGY 7 (3): 551-561.
HENRIQUEZ, NP; SPENCE, JR. 1993. HOST LOCATION BY THE GERRID EGG PARASITOID TIPHODYTES-GERRIPHAGUS (MARCHAL) (HYMENOPTERA, SCELIONIDAE). JOURNAL OF INSECT BEHAVIOR 6 (4): 455-466.
HENRIQUEZ, NP; SPENCE, JR. 1993. STUDIES OF LATHROMEROIDEA SP-NOV (HYMENOPTERA, TRICHOGRAMMATIDAE), A PARASITOID OF GERRID EGGS. CANADIAN ENTOMOLOGIST 125 (4): 693-702.
ZIMMERMANN, M; SPENCE, JR. 1992. ADULT-POPULATION DYNAMICS AND REPRODUCTIVE EFFORT OF THE FISHING SPIDER DOLOMEDES-TRITON (ARANEAE, PISAURIDAE) IN CENTRAL ALBERTA. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE 70 (11): 2224-2233.
NIEMALA, J; SPENCE, JR; SPENCE, DH. 1992. HABITAT ASSOCIATIONS AND SEASONAL ACTIVITY OF GROUND-BEETLES (COLEOPTERA, CARABIDAE) IN CENTRAL ALBERTA. CANADIAN ENTOMOLOGIST 124 (3): 521-540.
ANDERSEN, NM; SPENCE, JR. 1992. CLASSIFICATION AND PHYLOGENY OF THE HOLARCTIC WATER STRIDER GENUS LIMNOPORUS STAL (HEMIPTERA, GERRIDAE). CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE 70 (4): 753-785.
SPENCE, JR; CARCAMO, HA. 1991. EFFECTS OF CANNIBALISM AND INTRAGUILD PREDATION ON PONDSKATERS (GERRIDAE). OIKOS 62 (3): 333-341.
NIEMELA, J; SPENCE, JR. 1991. DISTRIBUTION AND ABUNDANCE OF AN EXOTIC GROUND-BEETLE (CARABIDAE) - A TEST OF COMMUNITY IMPACT. OIKOS 62 (3): 351-359.
SPERLING, FAH; SPENCE, JR. 1991. STRUCTURE OF AN ASYMMETRIC HYBRID ZONE BETWEEN 2 WATER STRIDER SPECIES (HEMIPTERA, GERRIDAE, LIMNOPORUS). EVOLUTION 45 (6): 1370-1383.
LANGOR, DW; SPENCE, JR. 1991. HOST EFFECTS ON ALLOZYME AND MORPHOLOGICAL VARIATION OF THE MOUNTAIN PINE-BEETLE, DENDROCTONUS-PONDEROSAE HOPKINS (COLEOPTERA, SCOLYTIDAE). CANADIAN ENTOMOLOGIST 123 (2): 395-410.
KELKER, DH; LEE, DA; SPENCE, JR. 1990. USE OF STANDARD TEMPERATURE THRESHOLDS AND PHENOLOGICAL PREDICTION FOR THE EUROPEAN CORN-BORER (OSTRINIA NUBILALIS HUBNER) IN ALBERTA. CANADIAN ENTOMOLOGIST 122 (11-12): 1247-1258.
SPENCE, JR; GOODING, RH. 1990. EVOLUTIONARY SIGNIFICANCE OF HYBRIDIZATION AND INTROGRESSION IN INSECTS - INTRODUCTION. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE 68 (8): 1699-1700.
SPENCE, JR. 1990. INTROGRESSIVE HYBRIDIZATION IN HETEROPTERA - THE EXAMPLE OF LIMNOPORUS STAL (GERRIDAE) SPECIES IN WESTERN CANADA. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE 68 (8): 1770-1782.
LANGOR, DW; SPENCE, JR; POHL, GR. 1990. HOST EFFECTS ON FERTILITY AND REPRODUCTIVE SUCCESS OF DENDROCTONUS-PONDEROSAE HOPKINS (COLEOPTERA, SCOLYTIDAE). EVOLUTION 44 (3): 609-618.
SPERLING, FAH; SPENCE, JR. 1990. ALLOZYME SURVEY AND RELATIONSHIPS OF LIMNOPORUS STAL SPECIES (HETEROPTERA, GERRIDAE). CANADIAN ENTOMOLOGIST 122 (1-2): 29-42.