scholarly journals Regenerating eastern white pine: A cooperative research approach

1999 ◽  
Vol 75 (3) ◽  
pp. 423-425 ◽  
Author(s):  
D. Burgess ◽  
S. Wetzel ◽  
F. Pinto
Keyword(s):  
Natural Regeneration ◽  
Pinus Strobus ◽  
Site Preparation ◽  
Research Approach ◽  
Cooperative Research ◽  
White Pine ◽  
Eastern White Pine ◽  
Research Activities ◽  
Early Results ◽  
Brush Control

A 27-ha field study was set up in 1994 within the Petawawa Research Forest near Chalk River, Ontario with input and support from local research scientists, forest managers and forest technicians. The study was designed to examine the effects of partial cutting, site preparation and underplanting in natural eastern white pine (Pinus strobus L.) stands. A complete randomized block experimental design was followed with four replicates. Three thinning (control, one-crown and two-crown spacing) and four site preparation (control, scarification, brush control using herbicide, and both scarification and brush control using herbicide) treatments were applied. Natural regeneration and planted seedling survival and growth, soil nutrient availability and other environmental factors are being monitored and recorded. Early results have contributed to the development of a new provincial silvicultural guide and a prototype expert decision support system for white pine management. Research activities are evaluated and coordinated with field practices each year through the development of formal collaborative agreements, meetings, joint workshops and field tours. On-site staff is helping to collect field data and provide fire protection. The site has served as a field demonstration area for people interested in white pine ecosystem management. The study is described within the FERN network of sites on the Internet. Key words: eastern white pine, Pinus strobus, natural regeneration, understory planting, multidisciplinary field research, forest research sites

Effect of seed mass on early seedling growth of five eastern white pine (Pinus strobus L.) families under contrasting light environments

2004 ◽  
Vol 82 (11) ◽  
pp. 1645-1655 ◽  
Author(s):  
William C Parker ◽  
Thomas L Noland ◽  
Andrée E Morneault
Keyword(s):  
Growth Rate ◽  
Seedling Growth ◽  
Natural Regeneration ◽  
Seed Mass ◽  
Pinus Strobus ◽  
White Pine ◽  
Eastern White Pine ◽  
Relative Growth ◽  
Early Seedling Growth ◽  
Early Seedling

The strong influence of seed mass on early seedling growth of forest tree species is well established, but the ecological role of intraspecific variation in seed mass on natural regeneration is poorly understood. Wide variation in initial spatial patterns of natural regeneration of eastern white pine (Pinus strobus L.) between managed and undisturbed white pine forests of the Great Lakes region of North America has been attributed to differences in understory light levels and the frequency of substrates suitable for germination and seedling establishment. To explore the potential influence of seed mass on these observed patterns, the interaction of seed mass and light on early growth of white pine was investigated in a greenhouse study. Seedlings of five half-sib families differing in mean seed mass were grown for 8 and 14 weeks under moderate and low light conditions representing managed and undisturbed pine stands, respectively. Family differences in seedling biomass and root system development under each light environment were associated with positive, linear relationships with mean seed mass. Family and seed mass had a comparatively weak influence on biomass partitioning and relative growth rate. Moderate light improved seedling growth regardless of seed mass, but relative expression of seed mass effects on seedling traits was unaffected by light environment. These results suggest differential recruitment of white pine in managed and undisturbed stands is unrelated to variation in seed mass.Key words: biomass allocation, eastern white pine, greenhouse experiment, natural regeneration, relative growth rate, seed mass.

Expanding Options for Reforestation of the Cumberland Plateau

1980 ◽  
Vol 4 (4) ◽  
pp. 158-162
Author(s):  
Charles E. McGee
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Natural Regeneration ◽  
Site Preparation ◽  
Raw Material ◽  
White Pine ◽  
Cumberland Plateau ◽  
Yellow Poplar ◽  
Early Results ◽  
Pinus Taeda L

Abstract If reforestation options in the Cumberland Plateau region are to be expanded, existing low-quality stands must be utilized. Shearing and on-site chipping of trees over 4 inches d.b.h. reduce site-preparation costs, leave the site relatively clean, and provide valuable raw material. Early results from a 37-acre study area show that a shearing-chipping operation can be followed by planting or natural regeneration. Additional site preparation or release may be necessary. Two years after harvest, planted loblolly pine (Pinus taeda L.) and yellow-poplar (Liriodendron tulipifera L.) are growing well. Planted white pine (Pinus strobus L.) has made a slower start but with later release should grow well. Natural regeneration is also developing rapidly and offers an inexpensive way to improve a low-quality stand.

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.

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