Retrospective theses: Recent submissions
Now showing items 1041-1060 of 1605
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Morphological variation in subalpine fir and its relationship to balsam fir in western Canada and the United States
(1988)To help clarify the taxonomy of the two closely related North American firs subalpine fir {Abies lasiocarpa (Hook.) Nutt.) and balsam fir {Abies balsamea (L.) Mill.) in western Canada and the United States, 10 populations ... -
Biodegradation of fenitrothion and fenitrooxon by the soil fungus Trichoderma viride
(1987)The biodegradation of fenitrothion (0,0-dimethyl-0-(3-methyl-4-nitrophenyl)- phosphorothioate and fenitrooxon (0,0-dimethyl-0-(3-methyl-4-nitrophenyl)phosphate by the soil fungus Trichoderma viride Pers. has been ... -
Genecology of jack pine in north central Ontario
(1995)To understand the pattern of adaptive variation of jack pine in north central Ontario better, short-term provenance tests were established. Seed was collected from 64 sites to the east and west of Lake Nipigon and grown ... -
Microbial toxicity assessment and biodegradation of triclopyr using Arthrobacter globiformis and Pseudomonas pictorum
(1990)Triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) was investigated for biodegradation using Arthrobacter and Pseudomonas sp. bacteria. No evidence of the proposed major metabolite, 3,5,6-trichloro-2-pyridinol was found ... -
Studies related to the chemistry and environmental persistence of methoxychlor and its derivatives
(1983)An Investigation of some of the chemical and biological factors Influencing the environmental fate of methoxychlor ( 1 , 1, 1-trichloro-2,2-bis (p-methoxyphenyl) ethane) has been conducted. Methoxychlor is an organochlorine ... -
Genetic variation in the frost hardiness of Pinus banksiana Lamb. (jack pine) in Northwestern Ontario
To estimate the level and pattern of variation in frost hardiness, artificial freezing tests of 64 provenances of jack pine were conducted. The provenances originated from northern Ontario. Seedlings of the provenances ... -
Site quality evaluation of jack pine in Northern Ontario using site-index curves
(1994)Jack pine stem analysis data from 383 fully stocked, mature, undisturbed plots were collected from studies located in four Ontario Ministry of Natural Resources regions (Northeast, Northern, North Central, Northwestern) ... -
Structure, biomass production and dynamics of four white spruce (Picea glauca [Moench] Voss) plantations near Thunder Bay, Ontario
(1990)Stand structure, biomass production and dynamics of white spruce (Picea glauca (Moench) Voss) were investigated in four plantations, ages 4, 10, 18, and 28 years, respectively, on similar lacustrine soils. Dry ... -
Soil-site relationships for young white spruce plantations in north central Ontario
(1991)Site index of white spruce (Picea glauca (Moench) Voss) in North Central Ontario was related to features of soil and topography using both multiple regression techniques and principal component analysis. Two different ... -
Estimating site quality from early height growth of white spruce and red pine plantations in the Thunder Bay area
(1986)Growth intercepts and breast height-age height growth curves were developed for estimating the site quality using early height growth in white spruce {Picea glauca (Moench) Voss) and red pine (Pinus resinosa Ait.) plantations ... -
Soil-site relations for jack pine in the Thunder Bay area
(1986)Site index of natural jack pine (Pinus banksiana Lamb.) in the Thunder Bay area was related to features of soil and topography using multiple regression analyses. Site index (SI, height of jack pine trees at 50 years from ... -
Height growth and site index of trembling aspen in north central Ontario
(1991)Height-growth and site-index curves were developed for estimating site quality of trembling aspen {Populus tremuloides Michx.) in north central Ontario. These curves were developed from stem analysis data of dominant ... -
Soil-site relations for jack pine (Pinus banksiana Lamb.) in Northeastern Ontario
(1994)Site index of jack pine {Pinus banksiana Lamb) measured on 76 plots in northeastern Ontario was related to features of soil and topography using multiple regression. Site index at breast height age 50 years (SIBHSO) was ... -
Distribution of fishes in the Thunder Bay area of northwestern Ontario since deglaciation, with special reference to the darters (Genus Etheostoma) and the Sibley Peninsula
(1991)The prevailing theory explaining fish distribution in the western Lake Superior basin states that recolonization was from south to north following the retreating ice margins. Postulated access to post glacial Lake Superior ... -
Soil-site relations for trembling aspen (Populus tremuloides Michx.) in Northwestern Ontario
(1991)Soil-site relations for trembling aspen in Northwestern Ontario were studied using 98 site plots representing a wide range of glacial landforms, soil conditions, and site quality. Site index was related to features of ... -
Height, growth and site index of jack pine (Pinus banksiana Lamb) in the Thunder Bay area : a system of site quality evaluation
(1986)Height growth patterns and site index were studied using stem analyses taken from dominant and codominant trees growing on 109 plots located in mature, natural, fully stocked evenaged stands of jack pine {Pinus banksiana ... -
Effects of selected biotic and abiotic factors on growth and survival of young crayfish, Orconectes virilis (Hagen)
(1988)The growth and survival of Orconectes virilis young was studied in 50 x 50 x 50 cm lake enclosures during the summer seasons of 1986 and 1987. The effects of density (12/m2, 40/m2, 160/m2), substrate (mud, sand, ... -
Population dynamics of an exploited population of Orconectes virilis in Northwestern Ontario
(1987)Exploitation of northern stocks of the crayfish Orconectes virilis (Hagen) produced significant alterations in several population parameters. High fishing efforts increased per capita fecundity, young-of-year (YOY) ... -
Dynamics of a polyphagous lake trout, Salvelinus namaycush (Walbaum), population in a Northwestern Ontario lake
(1988)Tagging studies, index gill netting and an experimental winter fishery were used to investigate the dynamics of a polyphagous lake trout (Salvelinus namaycush population in Squeers Lake of northwestern Ontario. The ... -
Factors that predict brook trout distribution, thermal habitat, and abundance in Northwestern Ontario streams
(1995)Predictive models were developed to improve the understanding of stream-resident brook trout (Salvelinus fontinalis) populations and habitat in northwestern Ontario, and to facilitate protection of stream-resident brook ...
