Results 1 to 10 of about 13,891 (287)

Fine Root Growth of Black Spruce Trees and Understory Plants in a Permafrost Forest Along a North-Facing Slope in Interior Alaska [PDF]

open access: yesFrontiers in Plant Science, 2021
Permafrost forests play an important role in the global carbon budget due to the huge amounts of carbon stored below ground in these ecosystems. Although fine roots are considered to be a major pathway of belowground carbon flux, separate contributions ...
Kyotaro Noguchi   +4 more
doaj   +2 more sources

The spread of Kalmia angustifolia on black spruce forest cutovers contributes to the spatial heterogeneity of soil resources. [PDF]

open access: yesPLoS ONE, 2018
Kalmia angustifolia is a boreal ericaceous shrub that can rapidly spread on black spruce forest cutovers in eastern Canada, where CPRS (i.e. Cutting with Protection of Regeneration and Soils") is practiced.
Gilles D Joanisse   +2 more
doaj   +2 more sources

Impacts of fire on non-native plant recruitment in black spruce forests of interior Alaska. [PDF]

open access: yesPLoS ONE, 2017
Climate change is expected to increase the extent and severity of wildfires throughout the boreal forest. Historically, black spruce (Picea mariana (Mill.) B.S.P.) forests in interior Alaska have been relatively free of non-native species, but the ...
Xanthe J Walker   +4 more
doaj   +2 more sources

Black spruce (Picea mariana) seed availability and viability in boreal forests after large wildfires

open access: yesAnnals of Forest Science, 2023
Key message Black spruce (Picea mariana (Mill.) B.S.P.) has historically self-replaced following wildfire, but recent evidence suggests that this is changing.
Kirsten A. Reid   +8 more
doaj   +1 more source

Highly informative single-copy nuclear microsatellite DNA markers developed using an AFLP-SSR approach in black spruce (Picea mariana) and red spruce (P. rubens). [PDF]

open access: yesPLoS ONE, 2014
Microsatellites or simple sequence repeats (SSRs) are highly informative molecular markers for various biological studies in plants. In spruce (Picea) and other conifers, the development of single-copy polymorphic genomic microsatellite markers is quite ...
Yong-Zhong Shi   +2 more
doaj   +1 more source

Does the type of silvicultural practice influence spruce budworm defoliation of seedlings?

open access: yesEcosphere, 2021
Spruce budworm (Choristoneura fumiferana (Clem)) is the main defoliator in the boreal forest of North America, and its outbreaks have major ecological and economic consequences and represent a challenge for forest management.
Janie Lavoie   +3 more
doaj   +1 more source

Fertiliser Addition Is Important for Tree Growth on Cut-Over Peatlands in Eastern Canada [PDF]

open access: yesMires and Peat, 2008
Fertilisation is considered essential for tree growth on cut-over peatlands. However, little research has been carried out on these managed ecosystems in North America. Two experiments were conducted on peatlands planted with black spruce (Picea mariana (
G. Caisse   +3 more
doaj   +2 more sources

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

Postglacial phylogeography, admixture, and evolution of red spruce (Picea rubens Sarg.) in Eastern North America

open access: yesFrontiers in Plant Science, 2023
Climate change is a major evolutionary force that can affect the structure of forest ecosystems worldwide. Red spruce (Picea rubens Sarg.) has recently faced a considerable decline in the Southern Appalachians due to rapid environmental change, which ...
Stanislav Bashalkhanov   +2 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

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