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Showing 1 to 12 of 12 for “"White spruce (Picea glauca)"”.
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WHITE SPRUCE (PICEA GLAUCA), MOOSE (ALCES ALCES) AND THE ORIGIN OF A ZOOTIC DISCLIMAX COMMUNITY ON ISLE ROYALE
… spatial, temporal, and competitive responses of white spruce (<em>Picea glauca</em>), a non-palatable species, to the savanna environment. Most tree species had lower densities in savannas, however bird-dispersed species mountain ash (<em>Sorbus decora</em>)<em> </em>and chokecherry (<em>Prunus …
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Effects of nickel toxicity on expression of genes associated with nickel resistance in white spruce (Picea glauca): Nickel translocation in plant tissues.
… and b) nickel effects on gene expression in white spruce (Picea glauca). The results of the study revealed that even at the highest dose of 1,600 mg of Ni /kg of soil, there was no physical evidence of toxicity to P. glauca seedlings screened. P. glauca was found to be a nickel avoider, as …
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Structure, distribution and innervation of sensilla on the ovipositor of the spruce budworm Choristoneura fumiferana, and electrophysiological reponses from type II sensilla
… of Choristoneura fumiferana. The female spruce budworm has four types of trichoid sensilla on its ovipositor. A unique and rare type of sensillum is described. This Type II sensillum is multiporous and also has a single pore at the tip. The other sensillar types found were: Type I and III …
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The effects of harvest intensity and seedbed type on germination and early survival of balsam fir and white spruce in the southern boreal forest
… for balsam fir ( Abies balsamea (L.) Mill) and white spruce ( Picea glauca (Moench) Voss) were examined. The harvest intensities canopies included a 1/3 rd and 2/3 rd partial cut, a clearcut and a control (full canopy). The seedbeds were mineral, humus (O h ) and organic (O f ). In clearcuts, …
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Soil based vegetation productivity modeling for a northern Michigan surface mining region
… Irish potatoes, red maple (Acer rubrum L.), white spruce (Picea glauca [Moench] Voss), red pine (Pinus resinosa Aniton), eastern white pine (Pinus strobus L.), jack pine (Pinus banksiana Lamb.), and lilac (Syringa vulgaris L.). Soil attributes that were examined in this research include: …
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Spruce bark beetle disturbance in the forest-tundra ecotones of southwest Yukon: impacts and predisposing factors
… the forest-tundra ecotones of southwest Yukon to spruce bark beetle (Dendroctonus rufipennis) infestation, and investigated the subsequent effects of insect disturbance on the growth and establishment of white spruce (Picea glauca). Specific objectives were to evaluate (i) the relationships …
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Fine-Scale Mechanisms Influencing Germination Success, Seedling Growth and Survival in an Alpine Forest-Tundra Ecotone
… of young seedlings. To that end, I studied the white spruce (Picea glauca) alpine treeline in the Kluane region of southwest Yukon to explore two important questions related to treeline ecology: (1) Is there sufficient viable seed dispersed at and beyond treeline for successful advance? (2) What …
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Dendroarchaeology in the Mackenzie Mountains: The Moose Horn Pass Caribou Fence (KjRx-1)
… to determine the fences ages. To do this, living white spruce (Picea glauca) trees in the area were cored to determine the overall growth pattern in the local environment. The arrangement of wide and narrow rings reflects local growing conditions. This pattern, ending at a known point in time, …
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Tracking nuclear generating station emissions and fossil fuel contributions using tree rings in southern Ontario, Canada
… indicate that Δ14C tree-ring signatures from white spruce (Picea glauca) and blue spruce (Picea pungens) can track 14C-enrichment from NGS 14C emissions when comparing peaks in tree-ring Δ14C offset data and 14C emissions during the trees’ growing season. Tree-ring Δ14C signatures are also …
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Ecological site quality, site index, and height growth of white spruce stands in the sub-boreal spruce zone of British Columbia
… relationship between ecological site quality and white spruce [Picea glauca (Moench) Voss] height growth, vegetation, soil, foliar nutrient, and stem analysis data were obtained from 102 white spruce-dominated stands across a wide range of sites throughout the Sub-Boreal Spruce (SBS) …
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Herbivore-plant-soil interactions in the boreal forest : selective winter feeding by spruce grouse
… examines the unusual winter forage selection of spruce grouse (Dendragapus canadensis) in the Yukon. The winter diet of spruce grouse consists entirely of conifer needles. Spruce grouse feed selectively on individual trees (feeding trees) of a single species, white spruce (Picea glauca), leaving …
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Sequestration and Characterization of Soil Organic Carbon for Shelterbelt Agroforestry Systems in Saskatchewan
… (Populus spp.), Manitoba maple (Acer negundo), white spruce (Picea glauca), Scots pine (Pinus sylvestris) and caragana (Caragana arborescens) and the adjacent agricultural fields at 59 sampling sites across the agricultural region of Saskatchewan. Measurement of SOC concentration for soil …