Results 11 to 20 of about 11,437 (225)

Using spot treatments to regenerate an intimate mixture of trembling aspen and white spruce in Alberta: Results at age 15

open access: yesThe Forestry Chronicle, 2023
Mixedwood stands, dominated by trembling aspen (Populus tremuloides Michx.) and white spruce (Picea glauca (Moench) Voss), are an important fibre source in Canada’s boreal forest and provide a range of ecological services. We present results from a study
Philip G. Comeau   +2 more
doaj   +1 more source

Divergent responses to permafrost and precipitation reveal mechanisms for the spatial variation of two sympatric spruce

open access: yesEcosphere, 2021
The ranges of black and white spruce are largely sympatric, suggesting both species have similar climate requirements. The two species, however, are highly segregated across the landscape with black spruce most common on nutrient‐poor sites with cold ...
E. Fleur Nicklen   +4 more
doaj   +1 more source

Forest composition influences how seasonal climate variables affect white spruce (Picea glauca (Moench) Voss) growth

open access: yesThe Forestry Chronicle, 2023
Variation in annual white spruce growth (Picea glauca (Moench) Voss) has been shown to be dependent on weather conditions such as air temperature and moisture availability.
Jéssica Chaves Cardoso   +4 more
doaj   +1 more source

White spruce enrichment planting in boreal mixedwoods as influenced by localized site preparation: 11-year update

open access: yesThe Forestry Chronicle, 2020
Ecosystem-based management aims to maintain the natural proportion of native species over a given landscape. White spruce (Picea glauca (Moench) Voss) is a species sensitive to environmental conditions; it is especially demanding in terms of nutrients ...
Myriam Delmaire   +3 more
doaj   +1 more source

The spruce budworm, a potential threat for Norway spruce in eastern Canada?

open access: yesThe 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

Patterns of cross-continental variation in tree seed mass in the Canadian Boreal Forest. [PDF]

open access: yesPLoS ONE, 2013
Seed mass is an adaptive trait affecting species distribution, population dynamics and community structure. In widely distributed species, variation in seed mass may reflect both genetic adaptation to local environments and adaptive phenotypic plasticity.
Jushan Liu   +8 more
doaj   +1 more source

Probability of Spring Frosts, Not Growing Degree-Days, Drives Onset of Spruce Bud Burst in Plantations at the Boreal-Temperate Forest Ecotone

open access: yesFrontiers in Plant Science, 2020
Climate warming-driven early leaf-out is expected to increase forest productivity but concurrently increases leaf exposure to spring frosts, which could reduce forests' net productivity.
Benjamin Marquis   +4 more
doaj   +1 more source

Comparative Analysis of Enzyme Production Patterns of Lignocellulose Degradation of Two White Rot Fungi: Obba rivulosa and Gelatoporia subvermispora

open access: yesBiomolecules, 2022
The unique ability of basidiomycete white rot fungi to degrade all components of plant cell walls makes them indispensable organisms in the global carbon cycle.
Mila Marinovíc   +7 more
doaj   +1 more source

Efficient Multi-Sites Genome Editing and Plant Regeneration via Somatic Embryogenesis in Picea glauca

open access: yesFrontiers in Plant Science, 2021
Conifers are the world's major source of timber and pulpwood and have great economic and ecological value. Currently, little research on the application of CRISPR/Cas9, the commonly used genome-editing tool in angiosperms, has been reported in coniferous
Ying Cui   +6 more
doaj   +1 more source

Forest Transformation Following European Settlement in the Saguenay-Lac-St-Jean Valley in Eastern Québec, Canada

open access: yesFrontiers in Ecology and Evolution, 2020
Human activities have changed forest composition of northeastern North America since European settlement by increasing the importance of pioneer shade-intolerant species, at the expense of shade-tolerant and long-lived species.
Sébastien Dupuis   +4 more
doaj   +1 more source

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