Search Results
Displaying:
301 - 320 of 635
Impact of Air Pollutant Mixtures on Forest Vegetation and Soils
Resource
No impact on jack pine physiology was found when concentrations of the dominant pollutants from Oil Sands operations equivalent to 104 years of soluble disposition were added to intact soil cores
Impacts of a Stump Uprooting Operation on Properties of a Calcareous Loamy Soil and on Planted Seedling Performance
Resource
Six hundred Douglas-fir (Pseudotsuga menziesii) and 600 lodgepole pine (Pinus contorta var. latifolia) seedlings were planted on seven plots in a cutover north of Golden, British Columbia, to...
Impacts of Blading and Burning Site Preparation on Soil Properties and Site Productivity in the Sub-Boreal Spruce Zone of Central British Columbia
Resource
We investigated soil factors and tree growth on sites that were clearcut during the 1970s and early 1980s and were subsequently site prepared with either blade scarification (blading) or prescribed...
Impacts of Climate Change on Photosynthesis and Carbon Sequestration / Impactes des changements climatiques sur la photosythèse et le piégeage du carbone
Resource
Global warming may cause photosynthesis to start earlier. As the climate warms, spring arrives earlier and fall ends later. This change in temperature affects how trees grow. Gretta Goodine of the...
Impacts of Cross-Contour Skidroads on Properties of a Gravelly Sandy Loam Soil and on Planted Seedling Performance
Resource
Soil conditions, growth of 1200 planted seedlings each of lodgepole pine ( Pinus contorta var. latifolia) and Douglas-fir ( Pseudotsuga menziesii), and development of other vegetation were studied to...
Impacts of Different Methods of Mechanical Site Preparation on Foliar Nutrients of Planted White Spruce Seedlings
Resource
The impacts of different methods of mechanical site preparation (MSP) treatments on foliar nutrients of planted plug+ 1 white spruce seedlings were examined at two mixed-wood boreal forest sites (Judy...
Impacts of Major Pests on Forest Growth and Yield in the Prairie Provinces and the Northwest Territories: A Literature Review
Resource
Literature pertaining to the impact of forest pests on timber productivity in the prairie provinces and Northwest Territories is reviewed. The discussion of impact is largely confined to growth loss...
Impacts of Soil Disturbance on Roots Systems of Douglas-fir and Lodgepole Pine Seedlings
Resource
One hundred and sixty-two lodgepole pine ( Pinus contorta var. latifolia) and 162 Douglas-fir ( Pseudotsuga menziesii var. glauca) seedlings were excavated in a clearcut north of Golden to ascertain...
Impacts of Stump Uprooting on a Gravelly Sandy Loam Soil and Planted Douglas-fir Seedlings in South-Coastal British Columbia
Resource
Studies to determine levels and impacts of soil disturbance caused during root-disease control by stump removal were initiated on a cutover on southern Vancouver Island immediately prior to the...
In Brief, Number 10
Resource
Topics covered: A silvicultural approach more suited to boreal forests Defining old-growth forests within boreal forests Do ecological region and drainage have an impact on the site quality index of...
In Brief, Number 37
Resource
Topics covered: Impact of planting density on stem shape in jack pine. The role of gravity in the development of white spruce. Taking heath and moss into account in the management of black spruce...
Increasing Fire Frequency and Severity Will Increase Habitat Loss for a Boreal Forest Indicator Species
Resource
Climate change will lead to more frequent and more severe fires in some areas of boreal forests, affecting the distribution and availability of late-successional forest communities. These forest...
Influence of Forest Management Activities on Soil Organic Carbon Stocks: A Knowledge Synthesis
Resource
Almost half of the total organic carbon (C) in terrestrial ecosystems is stored in forest soils. By altering rates of input or release of C from soils, forest management activities can influence soil...
Insects and Mites Associated with Ontario Forests: Classification, Common Names, Main Hosts and Importance
Resource
This report was prepared to facilitate the use of scientific and common names of insects and mites dealt with by the forestry community of Ontario and includes most of the species recorded by the...
Integrating Indigenous and Scientific Perspectives on Environmental Changes: Insights from Boreal Landscapes
Resource
This study compares the perspectives of Indigenous and scientific communities on environmental changes in boreal landscapes of Quebec, Canada to determine where collaboration between Indigenous...
Integration of Multi-scale Remote Sensing Data for Reindeer Lichen Fractional Cover Mapping in Eastern Canada
Resource
Study demonstrates that upscaling of lichen cover from UAV data to Landsat via an intermediate image scale is an effective regional-scale mapping approach.
Interim Report on Ecological Benchmarking and Biomonitoring for Detection of Air-borne Pollutant Effects on Vegetation and Soils, 1975 to 1978
Resource
A set of 11 sites were established in the Alberta Oil Sands Environmental Research Program study area to provide baseline information on vegetation and soils with respect to air pollution impact
Interim Report on Physiology and Mechanisms of Air-borne Pollutant Injury to Vegetation, 1975 to 1978
Resource
Jack pine, when fumigated with SO2 at the ambient air quality standards, exhibited various biochemical responses that can have a deleterious effect on the normal growth and yield of vegetation.
Interim Report on Symptomology and Threshold Levels of Air Pollutant Injury to Vegetation, 1975 to 1978
Resource
Six woody forest species showed a gradual decline in CO2 gas exchange which was related to symptom development characteristic of SO2 toxicity. Paper birch most sensitive species, black spruce least