Results 41 to 50 of about 32,783 (209)

Legacy effects of precommercial thinning on the natural regeneration of next rotation balsam fir stands in eastern Canada

Silva Fennica, 2019
The Green River precommercial thinning (PCT) trial was established between 1959–1961 in New Brunswick (Canada) within natural balsam fir (Abies balsamea (L.) Mill.)-dominated stands.
Claudie-Maude Canuel, Nelson Thiffault, Michael K. Hoepting, James C.G. Farrell   +3 more
doaj   +1 more source

A review of climate change effects on the regeneration dynamics of balsam fir

The Forestry Chronicle, 2022
Balsam fir (Abies balsamea) is one of the most abundant softwood species in eastern Canada but is projected to be adversely affected by climate change.
Joe Collier, David A. MacLean, Loïc D’Orangeville, Anthony R. Taylor   +3 more
doaj   +1 more source

Life‐History Traits and Overwintering of Actia interrupta (Diptera: Tachinidae), a Larval Parasitoid of Choristoneura fumiferana (Lepidoptera: Tortricidae)

Entomologia Experimentalis et Applicata, EarlyView.
Actia interrupta is a larval tachinid parasitoid that plays a key role in regulating low‐density populations of the eastern spruce budworm. We describe its immature stages, life‐history traits, host‐searching behavior, development, and confirm its larviparous reproductive strategy.
Véronique Martel, Jacques Régnière, Jean‐Claude Thireau, Rob C. Johns   +3 more
wiley   +1 more source

Description of the five variants (mitotypes) detected in the intron 4 of the nad5 mtDNA gene of Abies balsamea. Abies fraseri and Abies lasiocarpa, two phylogenetically closely-related species to A. balsamea, were fixed for mitotype I and mitotype 2, respectively.

, 2015
* Poly, Polymorphic region;** numbers indicate nucleotide positions in the longest sequence obtained with nad5-4Ab primers (see Materials and Methods for more information).
Jean Beaulieu (717956), Benjamin Cinget (717954), Sébastien Gérardi (717955), Jean Bousquet (20909)   +3 more
core   +1 more source

Potential Species Distribution of Balsam Fir Based on the Integration of Biophysical Variables Derived with Remote Sensing and Process-Based Methods

Remote Sensing, 2009
In this paper we present a framework for modelling potential species distribution (PSD) of balsam fir [bF; Abies balsamea (L.) Mill.] as a function of landscape-level descriptions of: (i) growing degree days (GDD: a temperature related index), (ii) land ...
Charles P.-A. Bourque, Quazi K. Hassan
doaj   +1 more source

Integrating historical observations alters projections of eastern North American spruce–fir habitat under climate change

Ecosphere, 2022
Spruce–fir (Picea–Abies) forests of the North American Acadian Forest Region are at risk of disappearing from the northeastern United States and Canada due to climate change.
Caitlin Andrews, Jane R. Foster, Aaron Weiskittel, Anthony W. D'Amato, Erin Simons‐Legaard   +4 more
doaj   +1 more source

Canopy position and tree size structure the distribution of honeydew‐producing scale insects (Hemiptera: Coccoidea) in a temperate hardwood forest

Ecological Entomology, EarlyView.
Scale insect abundance peaked in the upper canopy of sugar maples. Parthenolecanium peaked on older internodes; Lepidosaphes on the current leader. Internodes longer than the previous carried more scales; wider ones fewer. Abstract Forest canopies are vertically stratified habitats in which microclimate and host tissue quality vary with height.
Susan M. Frye, Sandy M. Smith, Sean C. Thomas   +2 more
wiley   +1 more source

Genetic differentiation estimates for cpDNA and mtDNA across various Abies species and other conifers sympatric to Abies balsamea.

, 2015
1FST, differentiation among populations;2FSC, differentiation among populations within groups;3D, Jost’s differentiation index;4n/a, data not available.Genetic differentiation estimates for cpDNA and mtDNA across various Abies species and other conifers ...
Jean Beaulieu (717956), Benjamin Cinget (717954), Sébastien Gérardi (717955), Jean Bousquet (20909)   +3 more
core   +1 more source

Effects of Wood Species on the Energy Requirements and Size Distribution of Strands Produced by a Strander-Canter

BioResources, 2023
The effects of wood species on the performance of the strander-canting process were studied. Logs of balsam fir (Abies balsamea (L.) Mill.), black spruce (Picea mariana (Mill.) B.S.P.), and jack pine (Pinus banksiana Lamb) were processed under two ...
Irsan Alipraja, Roger E. Hernandez, Ahmed Koubaa   +2 more
doaj   +2 more sources

Conifer host identity shapes wood‐boring beetle communities more than climate across a latitudinal forest gradient in Quebec (Canada)

Insect Conservation and Diversity, EarlyView.
Host tree identity and latitude shaped wood‐boring beetle assemblages, with species richness declining northward but community composition varying among regions and hosts. Host tree species influenced beetle communities more strongly than climate; black spruce supported the most species, while eastern hemlock hosted very few.
Nicolas Perrault, Emilie Champagne, Mathieu Bouchard   +2 more
wiley   +1 more source