Limited Differences in Insect Herbivory on Young White Spruce Growing in Small Open Plantations and under Natural Canopies in Boreal Mixed Forests [PDF]
InsectsIn managed boreal forests, both plantations and natural regeneration are used to re-establish a cohort of conifer trees following harvest or disturbance.
Allison Pamela Yataco +4 more
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Pairing Spruce Budworm Control and Minimal Understory Perturbations: Effects of Btk Spraying Frequency in Boreal Forests. [PDF]
Ecol EvolSpruce 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 ...
Robitaille M, Pothier D, Pellerin S.
europepmc +2 more sources
Temperature and Morphology Affect the Performance and Cost of Flight in Spruce Budworm Females. [PDF]
Ecol EvolForewing length and wing surface are the key morphological traits to explain the biomechanics of the flight performance in spruce budworm. Large budworm females benefit from more energy reserves that can be allocated daily to flight and a relative energy saving during flight due to their mass.
Royer L, Régnière J.
europepmc +2 more sources
An integrated framework to identify and characterize regional-scale insect dispersal. [PDF]
Ecol ApplAbstract Forest pest insects cause major socio‐economic impacts, global losses of millions of dollars, and ecosystem changes. A key challenge for their management is tracing regional dispersal events critical to outbreak dynamics. We developed an integrated tracing framework for pest insects by combining isotope geolocation, ecological data, and ...
Dargent F +9 more
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ANALYSIS OF THE SPRUCE BUDWORM MODEL USING THE HEUN METHOD AND THIRD-ORDER RUNGE-KUTTA
Barekeng, 2022 This study discusses the analysis of the Spruce Budworm model using numerical methods, namely the Heun method and the Third Order Runge-Kutta method. The purpose of this study is to determine the numerical results of the Heun method and the Third Order ...
Irwan Irwan +4 more
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Dynamic Analysis of a Model for Spruce Budworm Populations with Delay
Journal of Function Spaces, 2021 A class of delayed spruce budworm population model is considered. Compared with previous studies, both autonomous and nonautonomous delayed spruce budworm population models are considered. By using the inequality techniques, continuation theorem, and the
Ahmadjan Muhammadhaji, Azhar Halik
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The spruce budworm, a potential threat for Norway spruce in eastern Canada?
The Forestry Chronicle, 2020 Norway spruce, an exotic tree species in North America, was largely used in reforestation programs in the province of Québec between 1972 and 1990. Several of these plantations are now reaching their commercial maturity and the resurgence of spruce ...
Richard Berthiaume +4 more
doaj +1 more source
Salvage decision-making based on carbon following an eastern spruce budworm outbreak
Frontiers in Forests and Global Change, 2023 Forest disturbances, such as an eastern spruce budworm (Choristoneura fumiferana) outbreak, impact the strength and persistence of forest carbon sinks. Salvage harvests are a typical management response to widespread tree mortality, but the decision to ...
Lisa N. Scott +8 more
doaj +1 more source
FACETS, 2020 Insect outbreaks can cover vast geographic areas making it onerous to cost-effectively monitor populations to address management or ecological questions.
R. Drew Carleton +16 more
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Winter-active spiders (Clubiona) have a hyperactive antifreeze protein with a unique beta-solenoid fold. [PDF]
FEBS JAntifreeze proteins from winter‐active spiders were purified using their affinity for ice. After LC–MSMS characterization, corresponding transcripts were identified. The antifreeze protein folds as a β‐solenoid with a large flat ice‐binding site on one surface and can bind to ice crystals and prevent their growth at −4 °C.
Graham LA +3 more
europepmc +2 more sources