Browsing by Advisor
Now showing items 1-20 of 31
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Carbon sequestration potential of agroforestry systems in Canada
(2020)Agroforestry is a land management system which integrates forest management practices with agriculture, often using high-value tree species planted alongside crops to increase profits. Agroforestry has the potential to ... -
Comparison of stratification and scarification methods of Sorbus decora, Vitis riparia, and Rhus typhina
(2022)This thesis investigates the effectiveness of three methods in breaking seed dormancy of Sorbus decora, Vitis riparia, and Rhus typhina. The treatment methods studied were mechanical scarification with sandpaper, ... -
Controlling competing vegetation for forest regeneration
(2021)The timely regeneration of productive forests is vital to maintain timber supply in the forest industry. However, other vegetation can severely hinder forest regenerations. Therefore, effective measures to control the ... -
Cost-benefit analysis of scarification in the boreal forest
(2024)Soil scarification is a site preparation method that improves growing conditions for seedlings. The practice has associated benefits and costs putting its feasibility into question within the boreal forest. The costs ... -
Ecophysiological responses of black spruce (Picea mariana) seedlings to nutrient supply, N-P-K ratio and photoperiod at current and elevated CO2 concentration
(2012-11-10)The relationship between plant growth and nitrogen supply is frequently used in growth models to predict growth performance under global climate change scenarios. However, the relationship may be changed under elevated ... -
Ecophysiological responses of four boreal tree species to soil nitrogen supply
(2000)The ecophysiological responses of four boreal tree species, trembling aspen (Populus tremuloides Michx.), black spruce (Picea mariana (Mill.) B.S.P.), white spruce (Picea glauca (Moench) Voss), and jack pine (Pinus ... -
Ecophysiological responses of white birch seedlings to soil temperature and phosphorus supply under current and doubled carbon dioxide concentration
(2009)To investigate the responses of some physiological and morphological traits to different soil temperature and phosphorus supply under current and doubled carbon dioxide concentration ([CO2]), white birch (Betula papyrifera ... -
Effects of CO2 elevation on the responses to flooding in black spruce (P. mariana) and tamarack (L. larcina) seedlings
(2016)Anthropogenic activities have been increasing the atmospheric CO2 concentration globally and the increase is predicted to continue to rise in the future. Increased CO2 has been shown to increase photosynthetic rates as ... -
Effects of elevated carbon dioxide concentration and light on biomass morphology and physiology of black spruce and white spruce seedlings
(2008)Carbon dioxide concentration and light interactions influence competition among boreal tree species, though little is known about the exact effects. The interactive effects of [CO 2 ] and light on growth, biomass production, ... -
Effects of mechanical site preparation on the growth of Jack Pine (Pinus banksiana)
(2018)The boreal forest in Canada provides a large volume of timber for Canadians and other countries year after year and effective silviculture is the key to sustainable harvesting. Site preparation can be a critical step in ... -
The effects of nitrogen Rate On seedlings growth in Picea Mariana
(2017)Nitrogen (N) is critically important for plant growth and development. The objective of this thesis is to examine how different rates of Nitrogen affect the seedling growth in black spruce (Picea mariana Mill.). This ... -
Effects of nitrogen supply on the physiological and morphological responses to elevated [CO2] in yellow birch (Betula alleghaniensis Britt.)
(2023)Ongoing climate changes can substantially impact soil nitrogen availability through its effects on other environmental conditions such as temperature, precipitation, and the frequency and intensity of extreme whether ... -
Effects of Photoperiod, Soil Moisture and Soil Temperature on the Northward Migration Potential of Jack Pine under the Scenario of Doubled Atmospheric CO2 Concentration
(2016)Climate envelope models predict that boreal trees can potentially migrate northward by as much as 10º by 2100 as a consequence of the predicted climate change associated with the doubling of atmospheric CO2 concentration, ... -
The effects of soil compaction on the germination and growth of Picea mariana and Pinus banksiana
(2020)Soil compaction has long been an issue for the forestry industry. Soil compaction can reduce soil aeration, porosity and drainage, and restrict the growth and success of trees and other plants. The objective of this study ... -
Effects of soil temperature on a coupled photosynthesis-stomatal conductance model for four boreal tree species
(2000)In order to examine the effects of soil temperature on a coupled photosynthesis-stomatal conductance model, seedlings of trembling aspen (Populus tremuloides Michx), jack pine (Pinsu banksiana Lamb. ), black spruce (Picea ... -
Effects of soil temperature on growth and biomass allocation in four boreal tree species
(2001)Trembling aspen (Populus tremuloides Michx.), black spruce (Picea mariana (Mill.) B.S.P.), white spruce (Picea glauca (Moench) Voss), and jack pine (Pinus banksiana Lamb.) seedlings were subject to seven soil temperature ... -
Effects of the nitrogen deposition on the forest ecosystems: an overview
(2023)Human activities exacerbate the production and emission of reactive nitrogen and lead to the increase and globalization of nitrogen deposition. At present, the interference of human activities in the global nitrogen cycle ... -
Effects of water availability, longer photoperiod, and elevated [CO2] on the potential of the northward migration in trembling aspen (populus tremuloides michx.)
(2019)Based on climate envelope models, boreal tree species may migrate to higher latitudes (approximately 10˚N toward the north) in response to rapid climate changes by the end of this century. Multiple factors will likely ... -
Evaluation of natural regeneration potential of a degraded forest in Ghana
(1999)Vast areas of forests have been degraded in Ghana. The degraded areas are generally invaded by Chromolaena odorata, a strong competing species for trees. Planting is the major primary means that is currently used to ... -
Genetic variation in physiology and growth under ambient and elevated CO2 concentrations in four provenances of Populus tremuloides from Northwestern Ontario
(2003)Trembling aspen (Populus tremuloides Michx.) is the most widely distributed and probably most genetically varied woody species in North America. Four provenances of trembling aspen seedlings from northwestern Ontario ...
