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Now showing items 41-50 of 83
Anatomical and physical wood property variation and juvenile wood distribution in a single stem of trembling aspen
(2003)
The variation of fiber length, vessel element length, relative density, ring width
and the distribution o f juvenile wood within the stem of a 62-year-old trembling aspen
(Populus tremuloides Michx.) were studied. Samples ...
Seasonal changes in gas exchange and foliar nitrogen of three conifer species growing on an Ontario boreal mixedwood site
(2003)
Jack pine, black spruce and white spruce are three vital species of the
Ontario boreal mixedwood forest. The purpose of this study is to compare and
contrast the ecophysiological characteristics of each species and to ...
Analysis of Ghana's renewable resource policies
(2003)
A comprehensive study of Ghana's renewable resource policies has been completed. The study is composed of two major components. First, an examination of environmental degradation occurring in Ghana along with the agents ...
Preliminary site-quality evaluation tools for the hardwood forests of central Ontario
(2004)
There are currently no locally-derived, quantitative site-quality evaluation tools available for
major tree species in the tolerant hardwood forests of central Ontario. To estimate potential
site productivity, site-index ...
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 ...
Pre- and post-forest management investigations of factors affecting sediment movement in riparian areas in Northwestern Ontario
(2004)
The principal objectives of this study were to measure the impacts of timber harvesting
on sediment transport rates (mineral and organic) associated with two clearcut areas in
northwestern Ontario and to evaluate the ...
Shoreline forest disturbance rates in natural and managed forests of northwestern Ontario
(2004)
The purpose of this study was to compare the rates of disturbance along forested
shorelines between natural and managed forests of the mesic boreal region of
northwestern Ontario. Comparisons were made between areas that ...
Soil characteristics of the deciduous forests in Central Ontario and their relationships with site indicies of sugar maple, American beech and red oak
(2004)
Tolerant hardwood forests occupy a broad geographic range in Ontario and they are
important for their ecological and economical values. Although sugar maple (Acer
saccharum Marsh.), American beech (Fagus grandifolia ...
Evaluation of a spatial habitat suitability model for the northern goshawk (Accipiter gentilis) in West-central Alberta
(2005)
The current era of forest management has expanded the array of values, spatial
dimensions and temporal horizons beyond those formerly considered in the planning
process. The desire to evaluate the impact of various ...
Concepts, theories and models of succession in the boreal forest of Central Canada
(2009)
Predicting plant community compositional responses to changing environmental conditions and disturbances is a key element of forecasting and managing for the effects of global climate change. With advances in ecological ...