Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"black spruce"”.
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Clearcut Solutions? An Evaluation of Partial Harvesting in the Black Spruce Boreal Forest
… this thesis evaluates partial harvesting in the black spruce boreal forest. Forest management in Ontario is required to emulate natural disturbances, but in regions of the boreal forest where fire cycles are long, regulated even-aged management by clearcutting has truncated forest age-class …
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Disturbance impacts on non-native plant colonization in black spruce forests of interior Alaska
… regions have experienced from invasive plants. Black spruce (Picea mariana) is the dominant forest type in interior Alaska, and wildfire is the dominant disturbance in these forests. Furthermore, disturbances in the form of management for fire suppression are common in forests close to urban …
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Nuclear and cytoplasmic genetic variation in Picea: DNA markers for evaluating past migration, introgression and evolutionary history
… range-wide populations of white (Picea glauca), black (P. mariana ) and red spruce (P. rubens). The chloroplast genome exhibited more intraspecific variation than the mitochondrial genome. Red spruce displayed the most total chloroplast genetic diversity (H T = 0.52). Neighbor-joining analysis …
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Species response to shifting and variable climates
… climate landscape of Alaska, Picea marinara (black spruce) populations were sampled from contrasted regions of local climate. Specifically, foliar samples were taken from both warmer, drier sites in the interior as well as comparatively cooler, wetter sites closer to the southern coast of …
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Impact of fire in the taiga of southeastern Manitoba on wildlife, vegetation, and value to resource users
… Alder Tamarack Bog 20, Jack Pine Sand Plain 5, Black Spruce Bog 5, Aspen Upland 21, Black Spruce Tamarack Bog 29. Pre-fire small mammal data for the permanent study plots were available, and up to ten years of data were used for comparative evaluation of fire effects. The effects of the fire …
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A preconcentration-spectographic method for the determination of trace elements in plant materials and the application of the biogeochemical method at the Silver Mine lead deposit Cape Breton, Nova Scotia
… upper bark, twigs and needles of balsam fir and black spruce, were determined.Lead anomalies were found in all materials, which accurately outlined the zone of mineralization. Superjacent and lateral hydromorphic anomalies were shown by zinc, silver, chromium and nickel in some or all of the …
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DISTRIBUTED ENERGETICS OF BOREAL FOREST SNOWMELT
… then in a mixed-wood and pine,and finally in a black spruce.
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Differential habitat selection of black bears, gray wolves, and boreal caribou in the Boreal Shield of Saskatchewan
… predators, including wolves (Canis lupus) and black bears (Ursus americanus). However, in the Boreal Shield of Saskatchewan caribou occur in relatively pristine habitat with low levels of anthropogenic disturbance, a naturally high fire-return interval, and few invasive species. The objectives …
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Fine root dynamics in the Boreal Forest of northern Saskatchewan, Canada
… including aspen (Populus tremuloides) (OA), black spruce (Picea mariana) (OBS), and two jack pine (Pinus banksiana) (mature – OJP, young – HJP94) stands were selected and MR were installed in July of 2002. Minirhizotron images were collected monthly from the end of May through September from …