Browsing by Subject "Jack pine"
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Approach to predict nutrient status and growth response of fertilized jack pine by foliar diagnosis
(1979)A factorial experiment testing N, P and K fertilizers, and a series of simpler, two-treatment (control and NPK) fertilizer trials were established in a range of jack pine stands to determine the application of a foliar ... -
Assessing above- and belowground competitive effects in pure and mixed stands of jack pine (Pinus banksiana) and black spruce (Picea mariana)
(2009)Ecological principles of niche, competition and competitive reduction suggest that competition in mixed stands composed of pine and spruce may experience positive interactions through (1) vertical stratification of canopy ... -
An assessment of the utility of an unmanned aerial vehicle for measuring tree heights in a jack pine provenance trial
(2020)This independent study is an assessment of the utility of an unmanned aerial vehicle (UAV) for measuring the heights of jack pine (Pinus banksiana) trees in a provenance trial. An electronic hypsometer, the Haglöf Vertex ... -
Competition trials of Pinus banksiana and Populus tremuloides under a range of proportions and densities
(1986)This study was the -first study designed specifically to analyse the competitive effects of density and species mixture for both Pinus banksiana and Populus tremuloides seedlings during the initial stages of growth and ... -
Ecologically-based taper equations for major tree species in Manitoba
(2004)Kozak's variable exponent taper equation was fitted for balsam poplar (Populus balsamifera L.), trembling aspen (Populus tremuloides Michx.), white spruce (Picea glauca (Moench) Voss), black spruce (Picea mariana (Mill.) ... -
Effective root growth potential of jack pine (Pinus banksiana Lamb.) container stock
(1989)The effective root growth potential (RGP) of both potted and outplanted jack pine seedlings grown in Lannen-Sokeri FH-408 paperpots and Can-Am #2 Multipots was measured on three test dates during the summers of 1986 and ... -
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, ... -
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 ... -
Establishment and early growth of jack pine (Pinus banksiana Lamb.) in Acton Township Ontario
(1986)The objective of this study was to investigate the effect of different site preparation methods on the establishment and growth of jack pine (Pinus banksiana Lamb.) on two different soil types. These sites were either ... -
An Examination of bark beetles and their associated blue stain fungi on boreal jack pine (Pinus banksiana) and white spruce (Picea glauca) in the Thunder Bay Region
(2009)Blue stain, caused by members of the Ophiostomatales, is of concern to the forest industry because it can quickly devalue timber by penetrating deep into the sapwood and creating dark blue to black staining. These fungi ... -
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 ... -
Ground speed : its influence on the direct seeding of jack pine (Pinus banksiana Lamb.) with the Bracke scarifier
(1993)The effects that ground speed and obstacle height have upon microsite creation by the Bracke scarifier and upon the seeding characteristics of the integral seeder were studied. The study was conducted in a former gravel ... -
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 ... -
Interactive effects of elevated CO2 and temperature, nutrition, and ectomycorrhizas on morphological traits and summer shoot formation in jack pine
(2022)Understanding the responses of trees, ectomycorrhizal fungi (ECM) and their association to climate change can be challenging due to their interactions with multiple environmental factors. The combined impacts of elevated ... -
Jack pine fitness under current and future climate
(2020)Climate change has the potential to drastically alter the functioning of Canada’s forests and the species that live there. The importance of understanding patterns of adaptive variation in relation to climate is imperative ... -
Pollen pool heterogeneity in jack pine (Pinus banksiana Lamb.) : a problem for estimating population outcrossing rate?
(1990)Pollen pool heterogeneity, which violates an assumption of the mixed-mating model, is one of the major problems facing population geneticists concerned with measuring plant mating systems. In the present study, isozyme ... -
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 ... -
Ten-year growth response of 45-year old Pinus banksiana Lamb. to urea fertilization and low thinning
(1982)The objectives of this investigation were 1) to examine the duration and pattern of jack pine growth response to urea fertilization and low thinning, and 2) to examine methods commonly used in the measurement of ... -
The influence of acid rain and drought on early growth and development of jack pine and balsam poplar
(1994)The influence of "acid rain" (watering with tap water acidified to pH 3.0 ) and drought on jack pine seedlings and balsam poplar cuttings growing in two different soil types was studied in a short-term greenhouse experiment. ...
