Johns, R.C.
-
Nontarget impacts of insecticide-based population control of eastern spruce budworm (Lepidoptera: Tortricidae) on nontarget caterpillar communities and parasitism
Glaus, V.; Nisole, A.; Edwards, S; Bélanger, S.; Johns, R.C.; Djoumad, A.; Cusson, M.; Fournier, V.; Martel, V.
Year: 2023
Catalog ID: 40884
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
-
Not just for the birds: Spiders as natural enemies of spruce budworm (Choristoneura fumiferana, Clem.)
Bowden, J.; Moise, E.R.D.; Johns, R.C.; Williams, M; van der meer, B.
Year: 2022
Catalog ID: 40962
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
The Use of UAS to Release the Egg Parasitoid Trichogramma spp. (Hymenoptera: Trichogrammatidae) Against an Agricultural and a Forest Pest in Canada
Year: 2021
Catalog ID: 40584
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Host-choice by a specialist folivore reflects trade-offs between foliage quality and 1 parasitism risk
-
Un cadre conceptuel pour l’intervention précoce contre la tordeuse des bourgeons de l’épinette : Peut-on arrêter les épidémies?
-
A conceptual framework for spruce budworm early intervention: Can outbreaks be stopped?
-
The Use of UAS to Release the Egg Parasitoid Trichogramma spp. (Hymenoptera: Trichogrammatidae) Against an Agricultural and a Forest Pest in Canada
Martel, V.; Johns, R.C.; Jochems-Tanguay, L.; Jean, F.; Maltais, A.; Trudeau, S.; St-Onge, M.; Cormier, D.; Smith, S.M.; Boisclair, J.
Year: 2021
Catalog ID: 40306
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
-
Impact of the Invasive Beech Leaf-Mining Weevil, Orchestes fagi, on American Beech in Nova Scotia, Canada
Sweeney, J.D.; Hughes, C.C.; Johns, R.C.
Year: 2020
Catalog ID: 40591
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Interguild interactions between a non-native phloem feeder and a native outbreaking defoliator
Year: 2020
Catalog ID: 40537
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
-
Identification of Spruce Budworm Natural Enemies Using a qPCR-Based Molecular Sorting Approach
Nisole, A.; Stewart, D.; Kyei-Poku, G.; Nadeau, M.; Trudeau, S.; Huron, Paule, PH; Djoumad, A.; Kamenova, S., ; Smith, M.A.; Eveleigh, E.S.; Johns, R.C.; Martel, V.; Cusson, M.
Year: 2020
Catalog ID: 40162
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
-
Tracking insect outbreaks: a case study of community-assisted moth monitoring using sex pheromone traps
Carleton, R.D.; Owens, E; Blaquière, H.; Bourassa, S.; Bowden, J.; Candau, J.-N.; DeMerchant, I.; Edwards, S; Huestis, A.; James, P.M.A.; Kanoti, A.M.; MacQuarrie, C.J.K.; Martel, V.; Moise, E.R.D.; Pureswaran, D.S.; Shanks, E.; Johns, R.C.
Year: 2020
Catalog ID: 40112
Issued by: Great Lakes Forestry Centre
Availability: PDF (download)
-
Positive Results of an Early Intervention Strategy to Suppress a Spruce Budworm Outbreak after Five Years of Trials
MacLean, D.A.; Amos-Binks, L.; Carleton, D.; Hennigar, C.R.; Amirault, P.; Johns, R.C.; Regniere, J.
Year: 2019
Catalog ID: 40261
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
A Conceptual Framework for the Spruce Budworm Early Intervention Strategy: Can Outbreaks be Stopped?
Johns, R.C.; Bowden, J.; Moise, E.R.D.; Owens, E; Stastny, M.; Edwards, S; Emilson, E.J.S.; Cooke, B.J.; Carleton, R.D.
Year: 2019
Catalog ID: 39960
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
-
Canadian Forest Service spruce budworm L2 processing lab
-
Density has more influence than drought on spruce budworm (Choristoneura fumiferana) performance under outbreak conditions
Moise, E.R.D.; Lavigne, M.B.; Johns, R.C.
Year: 2019
Catalog ID: 39640
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Density has more influence than drought on spruce budworm (Choristoneura fumiferana) performance under outbreak conditions
Moise, E.R.D.; Lavigne, M.B.; Johns, R.C.
Year: 2018
Catalog ID: 40547
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Dispersion de la tordeuse des bourgeons de l'épinette
-
Spruce budworm dispersal
-
Testing the efficacy of Trichogramma minutum in the context of an 'Early Intervention Strategy' against the spruce budworm using different release methods.
Martel, V.; Trudeau, S.; Johns, R.C.; Owens, E; Smith, S.M.; Boivin, G.
Year: 2018
Catalog ID: 39037
Issued by: Laurentian Forestry Centre
Availability: PDF (download)
-
Landscape level impacts of EIS on SBW, other herbivores and associates natural enemies (ACOA RD100 2.2.2).
Martel, V.; Johns, R.C.; Eveleigh, E.S.; McCann, K.S.; Pureswaran, D.S.; Morrison, A.; Morin, B.; Owens, E; Hébert, C.
Year: 2018
Catalog ID: 39036
Issued by: Laurentian Forestry Centre
Availability: PDF (download)
-
Hitching a ride: firewood as a potential pathway for range expansion of an exotic beech leaf-mining weevil, Orchestes fagi (Coleoptera: Curculionidae)
Morrison, A.; Sweeney, J.D.; Hughes, C.C.; Johns, R.C.
Year: 2017
Catalog ID: 39563
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Hanging in the treetops: an in situ experiment in ancient hemlock assessing outbreak defoliator performance among crown levels
Hervieux, M.; Maguire, D.Y.; Johns, R.C.; Bauce, E.; Buddle, C.M.; Quiring, D.T.
Year: 2016
Catalog ID: 39559
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Charançon du hêtre
-
Beech leaf-mining weevil
-
Paradigms in eastern spruce budworm (Lepidoptera: Tortricidae) population ecology: A century of debate
Pureswaran, D.S.; Johns, R.C.; Heard, S.; Quiring, D.T.
Year: 2016
Catalog ID: 37306
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
-
Stratégie d'intervention précoce - efficacité des insecticides et leurs efforts non-spécifiques
-
Early intervention strategy—efficacy and the non-target impact of insecticides
-
Pisteurs de tordeuses : un projet de science citoyenne
Johns, R.C.; Pureswaran, D.S.; Owens, E
Year: 2015
Catalog ID: 36772
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Budworm tracker: a citizen science project
Johns, R.C.; Pureswaran, D.S.; Owens, E
Year: 2015
Catalog ID: 36771
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Evidence for a substantial host use bottleneck following the invasion of an exotic, polyphagous weevil
Moise, E.R.D.; Forbes, G.B.H.; Morrison, A.; Sweeney, J.D.; Hillier, N.K.; Johns, R.C.
Year: 2015
Catalog ID: 36409
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Adaptive advantages of dietary mixing different-aged foliage within conifers for a generalist defoliator
Johns, R.C.; Tobita, H; Hara, H; Ozaki, K
Year: 2015
Catalog ID: 36388
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Diel activity patterns of Paradiplosis tumifex (Diptera: Cecidomyiidae) and its inquilinie, Dasineura balsamicola (Diptera: Cecidomyiidae), within young balsam fir
Carleton, D.; Johns, R.C.; Edwards, B.V.; Eveleigh, E.S.; Silk, P.J.
Year: 2015
Catalog ID: 36309
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Plant module size influences the intra-tree distribution and abundance of a shoot-boring sawfly in young balsam fir
Johns, R.C.; Edwards, S; Carleton, D.; Morrison, A.; Morin, B.
Year: 2015
Catalog ID: 36303
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Willows (Salix spp.) as pollen and nectar sources for sustaining fruit and berry pollinating insects
Ostaff, D.P.; Mosseler, A.; Johns, R.C.; Javorek, S.; Klymko, J.; Ascher, J.S.
Year: 2015
Catalog ID: 36159
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Notes on the life-history of the balsam shootboring sawfly in the Maritimes region
Carleton, D.; Johns, R.C.; Morrison, A.; Morin, B.
Year: 2014
Catalog ID: 35736
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
A technical guide to installing beetle traps in the upper crown of trees
Hughes, C.C.; Johns, R.C.; Sweeney, J.D.
Year: 2014
Catalog ID: 35735
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
-
Diel activity patterns of Paradiplosis tumifex (Diptera: Cecidomyiidae) and its inquiline, Dasineura balsamicola (Diptera: Cecidomyiidae), within young balsam fir
Carleton, D.; Johns, R.C.; Edwards, B.V.; Eveleigh, E.S.; Silk, P.J.
Year: 2014
Catalog ID: 35678
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Intratree variation in the seasonal distribution and mortality of spruce budworm (Lepidoptera: Tortricidae) from the peak to collapse of an outbreak
Year: 2014
Catalog ID: 35395
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Host-tree oviposition preference of balsam fir sawfly, Neodiprion abietis(Hymenoptera: Diprionidae), in New Brunswick, Canada.
Johns, R.C.; Fidgen, J.G.; Ostaff, D.P.
Year: 2013
Catalog ID: 35403
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Ontogeny and stand condition influence the dispersal behavior of a defoliating specialist caterpillar
Year: 2013
Catalog ID: 35323
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
The pending storm: Eastern Canadian foresters brace for spruce budworm.
Year: 2013
Catalog ID: 35171
Issued by: Laurentian Forestry Centre
Availability: PDF (request by e-mail)
-
Relationships between Pikonema alaskensis larval density and shoot growth and production in young black spruce
Johns, R.C.; Leggo, J.J.; MacLean, D.A.; Quiring, D.T.
Year: 2013
Catalog ID: 34568
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
-
Dietary mixing within the crown of a decidous conifer enhances the fitness of a specialist sawfly
Johns, R.C.; Ozaki, K; Tobita, H
Year: 2012
Catalog ID: 34256
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Temporal variations in abiotic conditions exert little influence on diurnal activity of late-instar spruce budworm larvae on balsam fir
Holmes, S.; Kettela, E.G.; Nigam, P.C.; Heard, S.; Johns, R.C.
Year: 2012
Catalog ID: 33825
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Larval diet prior to and following virus ingestion influence the efficacy of two nucleopolyhedroviruses in whitemarked tussock moth (Orgyia leucostigma) caterpillars
Brodersen, G; Johns, R.C.; Lapointe, R.; Thumbi, D.K.; Thurston, G.S.; Lucarotti, C.J.; Quiring, D.T.
Year: 2012
Catalog ID: 33823
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Temporal and spatial variations in microclimate influence the larval foraging behaviors and performance of a conifer-feeding sawfly
Johns, R.C.; Boone, J; Leggo, J.J.; Smith, S.M.; Carleton, D.; Quiring, D.T.
Year: 2012
Catalog ID: 33821
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Intra-tree variation in foliage quality drives the adaptive sex-biased foraging behaviors of a specialist herbivore
Johns, R.C.; Quiring, D.T.; Ostaff, D.P.; Bauce, E.
Year: 2010
Catalog ID: 32033
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Spatial heterogeneity within an evergreen conifer promotes foliage-age dietary mixing by a specialist herbivore
Year: 2010
Catalog ID: 31849
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Sex biased intra-tree oviposition site selection and larval foraging behavior of a specialist herbivore
Johns, R.C.; Quiring, D.T.; Ostaff, D.P.
Year: 2009
Catalog ID: 31126
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Foliage-age mixing within balsam fir increases the fitness of a generalist caterpillar
Johns, R.C.; Quiring, D.T.; Lapointe, R.; Lucarotti, C.J.
Year: 2009
Catalog ID: 31122
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
-
Sampling procedures for evaluating yellowheaded spruce sawfly density and defoliation in juvenile black spruce stands
Johns, R.C.; Ostaff, D.P.; Quiring, D.T.
Year: 2006
Catalog ID: 31130
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
-
Relationships between yellowheaded spruce sawfly, Pikonema alaskensis, density and defoliation on juvenile black spruce
Johns, R.C.; Ostaff, D.P.; Quiring, D.T.
Year: 2006
Catalog ID: 26216
Issued by: Atlantic Forestry Centre
Availability: PDF (download)