Results 61 to 70 of about 382 (145)

The relationship between climate and outbreak characteristics of the spruce budworm in eastern Canada [PDF]

Climatic Change, 2007
The relationship between outbreak characteristics of the spruce budworm and the combination of climate, forest composition, and spatial location was examined in eastern Canada by the method of constrained ordination. Approximately 54% of the spatial variability in outbreak pattern, as described by a matrix of four outbreak characteristics, was ...
openaire   +2 more sources

Less pollen-mediated gene flow for more signatures of glacial lineages: congruent evidence from balsam fir cpDNA and mtDNA for multiple refugia in eastern and central North America.

PLoS ONE, 2015
The phylogeographic structure and postglacial history of balsam fir (Abies balsamea), a transcontinental North American boreal conifer, was inferred using mitochondrial DNA (mtDNA) and chloroplast DNA (cpDNA) markers.
Benjamin Cinget, Sébastien Gérardi, Jean Beaulieu, Jean Bousquet   +3 more
doaj   +1 more source

Indigenous knowledge, forest landscape modeling, and the cumulative effects of environmental changes

Ecological Applications, Volume 35, Issue 5, July 2025.
Abstract Boreal landscapes are exposed to climate change, forestry, and other industrial stressors with consequences for Indigenous people's wellbeing and relationship with traditional lands. As a collaborative and transdisciplinary research team including researchers and students from universities, Indigenous communities, and government and non ...
Annie Claude Bélisle, Chrystal Mantyka‐Pringle, Yan Boulanger, Benoit Croteau, Alice Wapachee, Louis‐Joseph Drapeau, Mélanie Desrochers, Hugo Asselin   +7 more
wiley   +1 more source

Natural resistance of white spruce and the behavior of the eastern spruce budworm [PDF]

, 2010
A white spruce, Picea glauca (Moench) Voss. (pinaceae), plantation in southern Quebec contained two distinct types of trees: resistant and susceptible to attack by spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae).
Mader, Brian J
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How much additive mortality is needed to suppress an outbreak?—A neglected question in forest insect pest management

Annals of Applied Biology, Volume 187, Issue 1, Page 111-120, July 2025.
Outbreak‐prone insects often undergo explosive population growth despite high natural mortality caused by predators, disease, host toxicity and inclement weather. Although contemporary forest pest management focuses on short‐term tree protection, there is increasing interest in developing strategies to directly suppress outbreaks.
Rob C. Johns, S. Edwards, D. T. Quiring, G. Moreau, M. Stastny   +4 more
wiley   +1 more source

Early growth decline and vegetation change predict black spruce mortality following spruce budworm outbreaks

Ecological Indicators
Tree mortality is accelerating across boreal forests due to increasing biotic disturbances, but the mechanisms linking defoliation, individual tree stress, and canopy decline remain poorly understood.
Bijay Pandeya, Martin P. Girardin, Kaysandra Waldron, Dominique Boucher, Daniel Kneeshaw, Annie Deslauriers   +5 more
doaj   +1 more source

Modeling Climatic Influences on Three Parasitoids of Low-Density Spruce Budworm Populations. Part 2: Meteorus trachynotus (Hymenoptera: Braconidae)

, 2021
This is the second article of a series of three where we develop temperature-driven models to describe the seasonal interactions between parasitoids and their hosts which we use to explore the impact of climate on their spatiotemporal biology.
Jean-Claude Thireau, Christian Hébert, Rémi Saint-Amant, Véronique Martel, Jacques Régnière, Pierre Therrien   +5 more
core   +1 more source

Characterizing landscape configuration effects on eastern spruce budworm infestation dynamics

Landscape Ecology
Abstract Context Spruce budworm (Choristoneura fumiferana, Clem, SBW) is the largest defoliator of boreal and mixedwood forests in North America. Its impact is directly linked to the quality and availability of primary host species such as balsam fir (Abies balsamea, (L.) Mill.) at the stand level.
Tommaso Trotto, Nicholas C. Coops, Alexis Achim, Sarah E. Gergel, Dominik Roeser   +4 more
openaire   +2 more sources

STUDIES OF PHYSIOLOGICALLY ACTIVE ARTHROPOD SECRETIONS: X. SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)

, 2017
The sex pheromone of the female eastern spruce budworm was identified as trans-11-tetradecenal by a combination of electroantennogram techniques, laboratory bioassays, and chemical analysis. Subsequent field trapping showed that this compound is a potent
Roelofs, W., Weatherston, J., Sanders, C. J., Comeau, A.   +3 more
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Spruce Budworm Population Changes in Summer 2016 in New Brunswick [PDF]

, 2017
The aim of this thesis is to research and analyze spruce budworm moth numbers and distribution in the province of New Brunswick in Canada. Spruce budworm is a forest pest and has caused large forest damages in the eastern Canada.
Siikavirta, Enna
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