Chronicle of white pine and red pine research at the Petawawa National Forestry Institute

1994 ◽  
Vol 70 (4) ◽  
pp. 372-381 ◽  
Author(s):  
W. M. Stiell
Keyword(s):  
Key Words ◽  
Pinus Strobus ◽  
Forest Service ◽  
Forest History ◽  
Red Pine ◽  
White Pine ◽  
Eastern White Pine ◽  
Forestry Research

Research dealing with eastern white pine (Pinus strobus L.) and red pine (P. resinosa Ait.) at the Petawawa National Forestry Institute is traced from its inception in 1918 to the present. Individual studies are described briefly, together with the names of the scientists who conducted them and the titles of publications which ensued. Key words: Forest history, forestry research, white pine, red pine, Canadian Forest Service, Petawawa National Forestry Institute

Effets du brûlage dirigé et du scarifiage sur l'établissement des semis et sur leur interaction avec la végétation concurrente

1995 ◽  
Vol 71 (5) ◽  
pp. 621-626 ◽  
Author(s):  
Renée Tellier ◽  
Luc C. Duchesne ◽  
Robert S. McAlpine ◽  
Jean-Claude Ruel
Keyword(s):  
Survival Rate ◽  
Key Words ◽  
Seedling Survival ◽  
Pinus Strobus ◽  
Pinus Resinosa ◽  
Red Pine ◽  
Fire Intensity ◽  
Competition Index ◽  
White Pine ◽  
Clear Cut

In 1990, a jack pine forest was clear-cut on an 15 ha area and divided into 40 plots. In 1991, ten plots were burned-over under varying conditions to obtain different fire intensities and ten plots were scarified. Each plot was planted in 1992 with red pine (Pinus resinosa Ait.) and white pine (P. strobus L.) seedlings. Survival rate and health of the seedlings was evaluated for the first two years after planting and the non-crop vegetation was assessed using a competition index developed for conifer management in Ontario. Our results show seedling survival rate, health, biomass and height to be improved when planted on burned-over or scarified sites and that fire intensity influences certain of those characteristics. Key words: scarification, fire, Pinus resinosa, Pinus strobus, competition

Deterioration of Fire-Killed Pine in Ontario and the Causal Wood-Boring Beetles

1957 ◽  
Vol 89 (6) ◽  
pp. 241-263 ◽  
Author(s):  
L. M. Gardiner
Keyword(s):  
Pinus Strobus ◽  
Weather Conditions ◽  
Red Pine ◽  
White Pine ◽  
Eastern White Pine ◽  
Northern Ontario ◽  
Vast Amount ◽  
Fire Area ◽  
Mature Stands ◽  
Wood Boring

In 1948, the Mississagi region of northern Ontario was swept by a niajor conflagration that began on May 25 and which, because of dry weather conditions, was not brought under control until July 23. When the fire had been extinguished, it was found to have spread over 57 townships, or 281,388 acres in all. Officers of the Ontario Department of Lands and Forests estimated that approximately 75 per cent of the fire area bore mature stands of eastern white pine (Pinus strobus L.), red pine (P. resinosa Ait.) and jack pine (P. banksiana Lamb.). Salvage operations began immediately in an effort to save this vast amount of valuable timber.

scholarly journals AIR-LAYERING OF EASTERN WHITE PINE (Pinus strobus L.)

1959 ◽  
Vol 35 (1) ◽  
pp. 19-21 ◽  
Author(s):  
J. L. Farrar ◽  
W. D. McJannet
Keyword(s):  
Pinus Strobus ◽  
White Pine ◽  
Eastern White Pine

scholarly journals Dendrochronological Analyses and Whole-Tree Dissections Reveal Caliciopsis Canker (Caliciopsis pinea) Damage Associated with the Declining Growth and Climatic Stressors of Eastern White Pine (Pinus strobus)

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 347
Author(s):  
Kara K.L. Costanza ◽  
William H. Livingston ◽  
Shawn Fraver ◽  
Isabel A. Munck
Keyword(s):  
New England ◽  
Tree Growth ◽  
Economic Value ◽  
Pinus Strobus ◽  
White Pine ◽  
Eastern White Pine ◽  
Management Options ◽  
Biological Impacts ◽  
Insight Into ◽  
Whole Tree

Eastern white pine (Pinus strobus) is considered a signature species in eastern North America, particularly in New England. In recent years, however, white pine has experienced increased damage due to native pathogens that reduce the species’ growth, productivity, and economic value. One disease of concern is Caliciopsis canker, caused by the fungal pathogen Caliciopsis pinea, which is associated with excessive resin production, cankers, rough bark, bark fissures/cracks, and reduced growth in white pine. Recent studies have documented the extent of Caliciopsis canker in New England and its association with soil and stocking conditions, yet few studies have focused on the biological impacts of the disease. This study used dendrochronology and whole-tree dissections to reconstruct Caliciopsis canker history in three New England white pine sites, quantify its impact on tree growth and vigor, identify pre-disposing factors, and assess potential silvicultural management options. Dendrochronology and whole-tree dissections provided a unique insight into canker damage throughout trees’ development. Canker damage was first reported in New Hampshire in the mid-1990s, yet cankers were present as far back as 1967 and have steadily increased since the mid-1980s. Increased canker damage was significantly associated with decreased live crown ratios and declining tree growth. Trees maintaining a 30% live crown ratio or greater generally experienced the least canker damage. Furthermore, peaks in canker occurrence were consistent across sites, indicating a regional synchronization of infection and damage. Canker damage was closely associated with climatic events such as droughts and a New England hurricane. The results suggest that Caliciopsis canker has been affecting white pine health over the last 40 years, and that the disease has become more prevalent in the past 20–30 years. Yet, our results suggest that if silvicultural prescriptions target low density thinnings that favor trees with higher live crown ratios (>30%) and low Caliciopsis symptom severity ratings, the risk of canker damage can be reduced in white pine stands.

Winter Leaf Conductance Rates of Pinus Strobus L. (Eastern White Pine)

2008 ◽  
Vol 29 (5) ◽  
pp. 474-482
Author(s):  
Delphis F. Levia ◽  
Lydia A. Leclair
Keyword(s):  
Pinus Strobus ◽  
Leaf Conductance ◽  
White Pine ◽  
Eastern White Pine
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