Results 51 to 60 of about 1,241 (168)

Survival-time analysis of white spruce during spruce budworm defoliation

Silva Fennica, 2005
Mortality and defoliation (DF%) in 987 white spruce (Picea glauca (Moench) Voss) trees were followed from 1992 to 2003 during an outbreak of the spruce budworm Choristoneura fumiferana (Clem.) in 15 white-spruce-dominated uneven-aged stands in the ...
Magnussen, Steen, Alfaro, René, Boudewyn, Paul   +2 more
doaj   +1 more source

Ecology of outbreak populations of the western spruce budworm

Ecosphere, 2021
We sampled outbreak populations of western spruce budworm, Choristoneura occidentalis (Lepidoptera: Tortricidae), between 1997 and 2016 in Douglas‐fir forests in the interior of British Columbia, Canada.
Vincent Nealis, Jacques Régnière
doaj   +1 more source

Modeling stratified dispersal in forest pests: A case study of the mountain pine beetle in Alberta

Ecology, Volume 107, Issue 2, February 2026.
Abstract Forest pests pose critical threats to forest ecosystems worldwide, yet accurately predicting their spatial spread remains challenging due to complex dispersal behaviors, weather effects, and the inherent difficulty of tracking small organisms across large landscapes.
Evan C. Johnson, Micah Brush, Mark A. Lewis   +2 more
wiley   +1 more source

Was black spruce a good host of the spruce budworm in warmer periods of the Holocene? a long-term reconstruction

Frontiers in Ecology and Evolution
Understanding the historical variability in the disturbance dynamics of the most important defoliator in eastern Canada, the spruce budworm (SBW), throughout its range will be paramount in anticipating potential changes associated with current climate ...
Hugues Terreaux de Félice, Marc-Antoine Leclerc, Hubert Morin   +2 more
doaj   +1 more source

Spatiotemporal variation in drivers of parasitoid metacommunity structure in continuous forest landscapes

Ecosphere, 2018
Although landscape spatial structure is known to influence spatial patterns of biodiversity, its effect on insect communities at higher trophic levels such as parasitoids remains poorly understood.
Ronan Marrec, Olivier Pontbriand‐Paré, Simon Legault, Patrick M. A. James   +3 more
doaj   +1 more source

Spruce Budworm Defoliation Influences Greenhouse Gas Concentrations in Streams

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.
Abstract One of the most significant natural disturbances in the Canadian boreal and hemiboreal forest is tree defoliation by eastern spruce budworm (SBW), which may increase nutrient and carbon inputs to catchment soils, and in runoff. Closely connected to catchments, headwater streams are known to be significant emitters of greenhouse gases (GHGs ...
Sandrine Ouimet, Erik J. S. Emilson, Michael Stastny, Lisa Galantini, Roxane Maranger   +4 more
wiley   +1 more source

Site-infidelity by budworm-linked warblers at the edge of an area defoliated by spruce budworm

Avian Conservation and Ecology, 2021
Most songbird species show some degree of fidelity to their previous breeding location, especially after successful reproduction. However, species associated with highly dynamic food sources (e.g., outbreaking insects) may have to adopt more flexible ...
Jeanne Moisan Perrier, Daniel Kneeshaw, Martin-Hugues St-Laurent, Marc-André Villard   +3 more
doaj  

Entire solutions of the spruce budworm model

Advances in Difference Equations, 2018
This paper is concerned with the entire solutions of the spruce budworm model, i.e., solutions defined for all (x,t)∈R2 $(x,t)\in \mathbb{R}^{2}$. Using the comparison argument and sub-super-solution method, three types of the entire solutions are ...
Lina Wang
doaj   +1 more source

Ecological factors shaping post‐fire resilience in mature black spruce forests of eastern North America

Journal of Ecology, Volume 114, Issue 2, February 2026.
Our study provides an assessment of the fire resilience of mature black spruce (BS) forests. A third of pre‐fire mature closed‐canopy stands are expected to transition into open woodlands. While mature BS‐dominated forests are considered more fire‐resilient than younger stands, our study raises concerns about their capacity to persist under the ...
Stelsa Fortin, Yan Boucher, Yves Bergeron, Martin Simard, Dominique Arseneault, Hugo Asselin, Martin Barrette, Victor Danneyrolles, Sylvie Gauthier, Francois Girard, Martin Girardin, Marc‐André Parisien, Nelson Thiffault, Osvaldo Valeria   +13 more
wiley   +1 more source

Come from away: Reconstructing a long‐range migratory flight of spruce budworm moths to Newfoundland, Canada Venues de loin : reconstitution d'un vol migratoire de longue distance de tordeuses des bourgeons de l'épinette vers Terre‐Neuve, au Canada

Ecological Entomology, Volume 51, Issue 1, Page 41-58, February 2026.
Lagrangian atmospheric models were used in conjunction with ecophysiological factors to reconstruct the path and meteorological conditions of a long‐range migration flight of spruce budworm moths to Newfoundland, Canada. Moths travelled under high winds and warm temperatures that favoured their migratory flight until encountering cooler temperatures ...
Philippe Barnéoud, Jennie Pearce, Alain Malo, Jean‐Noël Candau   +3 more
wiley   +1 more source