Results 51 to 60 of about 1,551 (207)

Anthropogenic disturbance and trophic interactions mediate population viability of American martens

The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
We present a simulation model of the probability of collapse to <10% of carrying capacity for American marten populations over a 50‐year time frame in relation to forest disturbance due to commercial harvesting and fur‐trapping levels. Probability of collapse differed between models that assumed no effect of logging (solid line), martens living in a ...
John M. Fryxell, Cheryl A. Johnson, Philip A. Wiebe, James A. Baker, Ian D. Thompson   +4 more
wiley   +1 more source

Spruce budworm biological and nutritional performance responses to varying levels of monoterpenes

iForest - Biogeosciences and Forestry, 2013
Dose effect of six monoterpenes (α-pinene, bornyl acetate, camphene, δ-3-carene, terpinolene, tricyclene) found in the foliage of host trees was tested on sixth-instar spruce budworm (Choristoneura fumiferana (Clem.)) using artificial diet.
Kumbasli M, Bauce
doaj   +1 more source

Meteorological versus spatial drivers of the spatial synchrony of forest insect pest outbreaks in North America

Oikos, Volume 2026, Issue 5, May 2026.
Spatial synchrony of population fluctuations has major consequences for the impacts of forest insect pest outbreaks at regional scales. We tested the predictions that the strength and drivers of this synchrony would differ among species according to their dispersal abilities and feeding guilds.
Kyle J. Haynes, Deepa S. Pureswaran, Andrew J. Allstadt, Jonathan A. Walter, Ian DeMerchant, Andrew M. Liebhold   +5 more
wiley   +1 more source

Pairing Spruce Budworm Control and Minimal Understory Perturbations: Effects of Btk Spraying Frequency in Boreal Forests

Ecology and Evolution, Volume 16, Issue 3, March 2026.
Spruce budworm epidemic induces tree mortality and modifies understory communities. Could aerial spraying of Btk reduce perturbations in understory communities? Biannual Btk spraying could prevent both wood loss and understory degradation. ABSTRACT Since 1985, more than 10 million hectares of Canadian forests have been treated against spruce budworm ...
Mathilde Robitaille, David Pothier, Stéphanie Pellerin   +2 more
wiley   +1 more source

Role of Mixed-Species Stands in Attenuating the Vulnerability of Boreal Forests to Climate Change and Insect Epidemics

Frontiers in Plant Science, 2021
We investigated whether stand species mixture can attenuate the vulnerability of eastern Canada’s boreal forests to climate change and insect epidemics.
Raphaël D. Chavardès, Raphaël D. Chavardès, Fabio Gennaretti, Fabio Gennaretti, Pierre Grondin, Xavier Cavard, Hubert Morin, Yves Bergeron, Yves Bergeron   +8 more
doaj   +1 more source

Climate Change Has Already Reshaped North American Forest Pest Dynamics: Insights From Multidecadal Process‐Based Modelling

Global Change Biology Communications, Volume 1, Issue 1, March 2026.
Climate change has rapidly expanded and shifted suitable climate conditions for eight major forest pests across North America, especially toward northern and higher elevation areas. Host exposure and overlap among pests are increasing, raising ecological and economic risks, and signaling accelerating future impacts under continued warming.
Yan Boulanger, Chris J. K. MacQuarrie, Véronique Martel, Jacques Régnière, Rémi Saint‐Amant, Kishan Sambaraju   +5 more
wiley   +1 more source

Olfactory receptor neuron responses of eastern spruce budworm, Choristoneura fumiferana Clemens. (Lepidoptera: Tortricidae) to female sex pheromones and host volatiles

, 2022
The spruce budworm (Choristoneura fumiferana Clemens), is a major defoliating pest of coniferous trees in North America. Defoliation of forests was limited to some degree in the early 1960s through the aerial application of DDT ...
Suresh, Thanusha
core  

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

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