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Full-Text Articles in Forest Sciences
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Giant Sequoia Insect, Disease, And Ecosystem Interactions, Douglas D. Piirto
Douglas D. Piirto
Individual trees of giant sequoia (Sequoia gigantea [Lindl.] Decne.) have demonstrated a capacity to attain both a long life and very large size. It is not uncommon to find old-growth giant sequoia trees in their native range that are 1,500 years old and over 15 feet in diameter at breast height. The ability of individual giant sequoia trees to survive over such long periods of time has often been attributed to the species high resistance to disease, insect, and fire damage. Such a statement, however, is a gross oversimplification, given broader ecosystem and temporal interactions. For example, why isn't there …
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Efficacy Of Herbicide Application Methods Used To Control Tanoak (Lithocarpus Densiflorus) In An Uneven-Aged Coast Redwood Management Context, Douglas D. Piirto, Brenda Smith, Eric K. Huff, Scott T. Robinson
Douglas D. Piirto
Three methods of tanoak (Lithocarpus densiflorus [Hook. & Arn.] Rehd.) control involving the application of the amine or ester form of triclopyr were evaluated in this coast redwood uneven-aged forest management study of herbicides. A cut-stump application with the amine form of triclopyr (Garlon 3A), frill cut with the amine form of triclopyr, basal-bark (outer surface) with the ester form of triclopyr (Garlon 4), and an untreated control were replicated three times. The tanoak control results in Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and/ or coast redwood (Sequoia sempervirens [D. Don] Endl.) predominated stands obtained in earlier studies …
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Cost-Effective Fire Management For Southern California's Chaparral Wilderness: An Analytical Procedure, Chris A. Childers, Douglas D. Piirto
Douglas D. Piirto
Fire management has always meant fire suppression to the managers of the chaparral covered southern California National Forests. Today, Forest Service fire management programs must be cost effective, while wilderness fire management objectives are aimed at recreating natural fire regimes. A cost-effectiveness analysis has been developed to compare fire management options for meeting these objectives in California's chaparral wilderness. This paper describes the analytical procedure using examples from a study currently being conducted for the Los Padres National Forest, and discusses some preliminary results.
Improving Productivity In Mixed-Species Plantations, Mila Bristow, J Doland Nichols, Jerome K. Vanclay
Improving Productivity In Mixed-Species Plantations, Mila Bristow, J Doland Nichols, Jerome K. Vanclay
Professor Jerome K Vanclay
Mixed species plantations are often promoted as being environmentally preferable to monocultures, but are rarely considered operationally viable by commercial forest growers. Despite many publications documenting benefits demonstrated in research studies (e.g., Kelty 2006; Forrester et al. 2006b; Wood and Vanclay 1995), and despite continuing calls from a wide range of advocates for mixed-species plantations, polyculture remains the exception rather than the rule in industrial plantation forestry (Nichols et al 2006)...
A Preliminary Assessment Of The State Of Harvest And Collection Technology For Forest Residues, Erin G. Wilkerson, D. Brad Blackwelder, Robert D. Perlack, David J. Muth, J. Richard Hess
A Preliminary Assessment Of The State Of Harvest And Collection Technology For Forest Residues, Erin G. Wilkerson, D. Brad Blackwelder, Robert D. Perlack, David J. Muth, J. Richard Hess
David J. Muth
To meet the “Twenty in Ten Initiative” goals set in the 2007 State of the Union address, forest resources will be needed as feedstocks for lignocellulosic ethanol production. It has been estimated that 368 million dry tons can be produced annually in the U.S. from logging residues and fuel treatment thinnings. Currently, very little of this woody biomass is used for energy production due to the costs and difficulty in collecting and transporting this material. However, minimizing biomass costs (including harvest, handling, transport, storage, and processing costs) delivered to the refinery is necessary to develop a sustainable cellulosic ethanol industry. …
Early Teee And Ground Cover Establishment As Affected By Seeding And Fertilization Rates In Tennessee, Buckley David, Jennifer Franklin
Early Teee And Ground Cover Establishment As Affected By Seeding And Fertilization Rates In Tennessee, Buckley David, Jennifer Franklin
Jennifer Franklin
Planted ground covers can compete strongly with planted tree seedlings, hindering reforestation efforts. Fertilization increases the growth of ground cover, but its effects on hardwood tree seedlings and competitive interactions between trees and ground cover species are unclear. A 3x3 factorial experiment with 3 levels of fertilizer application and 3 seeding rates wasestablished in 2006 to test for differences in tree seedling growth and survival, and for differences in ground cover establishment and composition. The ground cover was applied by hydroseeding a mixture of native warm-season grasses, annual rye and Korean lespedeza, along with lime, mulch and tackifier. Bareroot, 1-0 …
Prescribed Fire, Snag Population Dynamics, And Avian Nest Site Selection, Karen Bagne, Kathryn Purcell, John T. Rotenberry
Prescribed Fire, Snag Population Dynamics, And Avian Nest Site Selection, Karen Bagne, Kathryn Purcell, John T. Rotenberry
Karen Bagne
No abstract provided.