Results 61 to 70 of about 3,567 (170)

Biennial aerial application of Bacillus thuringiensis Berliner var. kurstaki is the most cost-effective approach of protection against spruce budworm (Choristoneura fumiferana [Clemens])

Annals of Forest Science
Key message Aerial application of Bacillus thuringiensis Berliner var. kurstaki (Btk) every second year to stands of white spruce (Picea glauca (Moench)Voss.), black spruce (Picea mariana Mill.) and balsam fir (Abies balsamea (L.) Mill.) is the most cost-
Éric Bauce, Alain Dupont, Christian Hébert, Richard Berthiaume, Roberto Quezada-García, Alvaro Fuentealba   +5 more
doaj   +1 more source

Disproportionate Belowground Carbon Loss and Ecotone Sensitivity in Boreal Peatland Wildland Fires: Insights From LiDAR and Field Data

Global Biogeochemical Cycles, Volume 40, Issue 4, April 2026.
Abstract Peatlands play a critical role in the global carbon (C)‐climate cycle, acting as vast long‐term stores of disproportionately large quantities of C relative to their land area. In recent decades, climate‐driven shifts in fire regimes and peatland hydrophysical properties have occurred across Canada's boreal regions, increasing concerns about ...
K. Nelson, D. Thompson, C. Hopkinson, R. Petrone, L. Chasmer   +4 more
wiley   +1 more source

Quantifying and Mapping Regional C, N and P Stocks From Temperate Fens, Bogs, and Forested Peatlands Using Detailed Peat Bathymetry

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Peatlands are known to store significant amounts of carbon (C), nitrogen (N) and phosphorus (P) globally. At the regional level, however, C stocks are often poorly assessed as peat depth variability within and among different types of individual peatlands is often ignored, and nutrient stock assessments are rare or based on limited ...
Julien Arsenault, Philippe Major, Julie Talbot, Roxane Maranger   +3 more
wiley   +1 more source

Terrestrial acidification and ecosystem services: effects of acid rain on bunnies, baseball, and Christmas trees

Ecosphere, 2017
Often termed “acid rain,” combined nitrogen and sulfur deposition can directly and indirectly impact the condition and health of forest ecosystems. Researchers use critical loads (CLs) to describe response thresholds, and recent studies on acid‐sensitive
Irina C. Irvine, Tara Greaver, Jennifer Phelan, Robert D. Sabo, George Van Houtven   +4 more
doaj   +1 more source

An Abnormal Balsam Fir

, 1945
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Forest health, heart rot disease, and their impact on the source of carbon‐based greenhouse gas fluxes

New Phytologist, Volume 250, Issue 2, Page 921-933, April 2026.
Summary Forest health is critical for sustaining ecosystem services like carbon sequestration. Heart rot, a widespread disease in upland northern hardwood forests, may affect greenhouse gas (CO2 and CH4) fluxes, but its impacts remain poorly measured. Using non‐destructive tomography and direct gas flux measurements, we quantified the effects of heart ...
Chathuranga K. Senevirathne, Alan Huff, Debit Datta, Nathan G. Swenson, Adrian V. Rocha   +4 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

Age and size structure of gap-dynamic, old-growth boreal forest stands in Newfoundland

Silva Fennica, 2006
The age and size structure of trees in old Abies-Picea-Betula forests on Newfoundland’s Great Northern Peninsula were examined. It was hypothesized that the size and age structure of both the tree and regeneration “strata” of these stands ...
McCarthy, John, Weetman, Gordon
doaj   +1 more source

Intraspecific and environmental variation mediate seed finding effectiveness among scatter‐hoarding small mammals

Ecology, Volume 107, Issue 3, March 2026.
Abstract About half of all plant species rely on animals such as scatter‐hoarding small mammals for seed dispersal. These plants include many keystone species for which small mammals are key primary and secondary dispersal agents as well as seed predators.
Margaret R. Merz, Sydne Record, Alessio Mortelliti   +2 more
wiley   +1 more source

Changes in Polar Lipid Composition in Balsam Fir during Seasonal Cold Acclimation and Relationship to Needle Abscission. [PDF]

Int J Mol Sci, 2023
MacDonald MT, Lada RR, MacDonald GE, Caldwell CD, Udenigwe CC.   +4 more
europepmc   +1 more source