My Emblem, The Pine

2017 ◽  
Author(s):  
Richard Higgins ◽  
Richard Higgins
Keyword(s):  
American History ◽  
Pinus Strobus ◽  
American Identity ◽  
White Pine ◽  
Eastern White Pine ◽  
Erect Posture ◽  
Pine Tree

Thoreau felt a deep affinity for Pinus strobus, Eastern white pine, the tallest tree east of the Rockies. He called it the emblem of his life. He loved its erect posture, how its whorled branches jutt almost horizontal to its ramrod straight trunk. The pine was a sign of nature’s vigor. The scent of pines was an elixir to him. He identified with the pine’s wild spirit. Nothing stands up more free from blame than a pine tree. White pines played a big role in American history. Sought for masts by England, they became an early symbol of American identity. The tallest pines are not gone. Researchers have found 17 white pines in Massachusetts at least 160 feet.

Volume distribution of eastern white pine in Canada

1994 ◽  
Vol 70 (4) ◽  
pp. 369-371 ◽  
Author(s):  
J. J. Lowe
Keyword(s):  
Species Distribution ◽  
Forest Inventory ◽  
Forest Type ◽  
Pinus Strobus ◽  
Volume Distribution ◽  
White Pine ◽  
Eastern White Pine ◽  
Maritime Provinces ◽  
Pine Tree ◽  
Forest Region

The distribution of eastern white pine (Pinus strobus L.) is described using Canada's Forest Inventory to map volume levels of the species and to tabulate its occurrence by Forest Region and forest type. White pine grows under a wide variety of conditions, with most volume occurring in mixedwood forest. The highest concentrations are in SE Ontario, SW Quebec, and the Maritime provinces. Key words: Forest inventory, Canada, white pine, tree volume, species distribution

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

Breeding eastern white pine for blister rust resistance: A review of progress in Ontario

2009 ◽  
Vol 85 (5) ◽  
pp. 745-755 ◽  
Author(s):  
Pengxin Lu ◽  
Darren Derbowka
Keyword(s):  
Rust Resistance ◽  
Genetic Resistance ◽  
Pinus Strobus ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Poor Survival ◽  
Eastern White Pine ◽  
Blister Rust ◽  
Survival And Growth ◽  
Major Resistance Genes

White pine blister rust (caused by Cronartium ribicola J.C. Fisch.) is a primary cause of poor survival and growth of eastern white pine (Pinus strobus L.) and has contributed to the species’ decline across its range. Genetic resistance to C. ribicola is generally weak in eastern white pine, possibly owing to the absence of meaningful resistance alleles. Integrating major resistance genes from Eurasian 5-needle pine species to P. strobus has been demonstrated to be effective through traditional plant breeding approaches. This paper provides a review of progress after more than half a century of breeding and testing in Ontario. Key words: Pinus strobus, white pine blister rust, genetic resistance, interspecific hybridization

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