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Full-Text Articles in Life Sciences
Nitrogen Cycling Responses To Mountain Pine Beetle Disturbance In A High Elevation Whitebark Pine Ecosystem, Megan P. Keville, Sasha C. Reed, Cory C. Cleveland
Nitrogen Cycling Responses To Mountain Pine Beetle Disturbance In A High Elevation Whitebark Pine Ecosystem, Megan P. Keville, Sasha C. Reed, Cory C. Cleveland
Ecosystem and Conservation Sciences Faculty Publications
Ecological disturbances can significantly affect biogeochemical cycles in terrestrial ecosystems, but the biogeochemical consequences of the extensive mountain pine beetle outbreak in high elevation whitebark pine (WbP) (Pinus albicaulis) ecosystems of western North America have not been previously investigated. Mountain pine beetle attack has driven widespread WbP mortality, which could drive shifts in both the pools and fluxes of nitrogen (N) within these ecosystems. Because N availability can limit forest regrowth, understanding how beetle-induced mortality affects N cycling in WbP stands may be critical to understanding the trajectory of ecosystem recovery. Thus, we measured above- and belowground N …
Past, Present, And Future Old Growth In Frequent-Fire Conifer Forests Of The Western United States, Scott R. Abella, W. Wallace Covington, Peter Z. Fule, Leigh B. Lentile, Andrew J. Sanchez Meador, Penelope Morgan
Past, Present, And Future Old Growth In Frequent-Fire Conifer Forests Of The Western United States, Scott R. Abella, W. Wallace Covington, Peter Z. Fule, Leigh B. Lentile, Andrew J. Sanchez Meador, Penelope Morgan
Public Policy and Leadership Faculty Publications
Old growth in the frequent-fire conifer forests of the western United States, such as those containing ponderosa pine (Pinus ponderosa), Jeffrey pine (P. jeffreyi), giant sequoia (Sequioa giganteum) and other species, has undergone major changes since Euro-American settlement. Understanding past changes and anticipating future changes under different potential management scenarios are fundamental to developing ecologically based fuel reduction or ecological restoration treatments. Some of the many changes that have occurred in these forests include shifts from historically frequent surface fire to no fire or to stand-replacing fire regimes, increases in tree density, increased abundance of fire-intolerant trees, decreases in understory …
Standard-Level Herbivory In An Old-Growth Conifer Forest Canopy, David C. Shaw, Kristina A. Ernest, H. Bruce Rinker, Margaret D. Lowman
Standard-Level Herbivory In An Old-Growth Conifer Forest Canopy, David C. Shaw, Kristina A. Ernest, H. Bruce Rinker, Margaret D. Lowman
All Faculty Scholarship for the College of the Sciences
Herbivory is an important ecological process in forest canopies but is difficult to measure, especially for whole stands. We used the Wind River Canopy Crane in Washington State to access 101 randomly-located sample points throughout the forest canopy. This provided a relatively quick and convenient way to estimate herbivory for a whole stand. The overall level of herbivory was estimated at 1.6% of leaf area. The distribution was strongly skewed to the lower canopy where broad-leafed species experienced higher levels of herbivory. Herbivory averaged 0.3% in conifers and 13.5% in broad-leafed species. Fully half of the sample points had no …
Fuel Loading Prediction Models Developed From Aerial Photographs Of The Sangre De Cristo And Jemez Mountains Of New Mexico, Usa, Kelly Scott, Brian P. Oswald, Kenneth W. Farrish, Daniel Unger
Fuel Loading Prediction Models Developed From Aerial Photographs Of The Sangre De Cristo And Jemez Mountains Of New Mexico, Usa, Kelly Scott, Brian P. Oswald, Kenneth W. Farrish, Daniel Unger
Faculty Publications
Fuel load prediction equations that made use of aerial photographs were developed for Mixed Conifer, Ponderosa Pine (Pinus ponderosa Dougl. ex Laws.) and Pinyon-Juniper (Pinus edulis Engelm.)-(Juniperusmonosperma Engelm.) cover types from one-time measurements made in the Santa Fe watershed (SFWS) located in the Sangre de Cristo Mountains of northern New Mexico, and at Los Alamos National Laboratory (LANL) located in the Jemez Mountains of northern New Mexico. The results of the watershed data set were favorable and exhibited a high degree of relative accuracy. The results from the LANL data set did not share the same degree of accuracy, …
Mixed Conifer And Aspen Regeneration In Small Clearcuts Within A Partially Harvested Arizona Mixed Conifer Forest, P.F. Ffolliott, G.J. Gottfried
Mixed Conifer And Aspen Regeneration In Small Clearcuts Within A Partially Harvested Arizona Mixed Conifer Forest, P.F. Ffolliott, G.J. Gottfried
Aspen Bibliography
Southwestern mixed conifer forests are found on high-elevation sites, generally above 8,000 feet, throughout Arizona, New Mexico, and southwestern Colorado.
Tall Shrub Dynamics In Northern Minnesota Aspen And Conifer Forests, J.C. Balogh, D.F. Grigal
Tall Shrub Dynamics In Northern Minnesota Aspen And Conifer Forests, J.C. Balogh, D.F. Grigal
Aspen Bibliography
Tall shrubs are a dynamic component of upland forests in the Lake States (Balogh 1983, Dunn 1986, Ohmann and Ream 1971). They are an integral part of forest element cycles, competitors with overstory for growth and reproduction, essential to post-harvest site stabilization, and a source of wildlife cover and browse (Comerford and White 1977, Dunn 1986, Robinette 1972, Tappeiner 1971).
Streamline Herbicide Release Of Red Pine (Pinus Resinosa), L.S. Brooks, B.S. Jones
Streamline Herbicide Release Of Red Pine (Pinus Resinosa), L.S. Brooks, B.S. Jones
Aspen Bibliography
Conifer management in the lake States requires the land manager have a diverse set of tools to accomplish the task of plantation establishment and survival. Methods are almost as variable as the soils of the region, which as remnants of ancient seas, volcanos and more recent glaciers. Terrain, soil profile, drainage, aspect and climate are some of the basic factors contributing to the diversity of sites and management regimes practices in the region. Herbicides are an important part of successful conifer management regimes. Approximately 70M forested acres are treated annually in MN, WI and the Upper Peninsula of MI.
A Management Plan For The Conifer Plantations At St. John's, Collegeville, Minnesota, Paul Schwietz Osb
A Management Plan For The Conifer Plantations At St. John's, Collegeville, Minnesota, Paul Schwietz Osb
Saint John’s Abbey Publications
This paper describes and analyzes the 120 acres of conifer plantations at St. John's Abbey, defines the objectives of management and proposes a 10 year plan for the maintenance and improvement of the plantations. This management plan emphasizes the non-profit corporation's sense of stewardship with multiple use goals. The protection of natural resources is assumed. Aesthetic and recreational values are high priorities, yet educational uses, wildlife protection and timber production are also important considerations. The plan also assumes that forest management at Saint John's will be self-sustaining. Thus the revenue derived from harvesting and thinning will be used to support …
Using Glyphosate Herbicide In Converting Aspen To Conifers, Donald A. Perala
Using Glyphosate Herbicide In Converting Aspen To Conifers, Donald A. Perala
Aspen Bibliography
No abstract provided.
Nurse Crop In Aspen: Ecology And Management In The Western United States, W.D. Shepperd, J.R. Jones
Nurse Crop In Aspen: Ecology And Management In The Western United States, W.D. Shepperd, J.R. Jones
Aspen Bibliography
No abstract provided.
Response Of Suppressed Conifer Seedlings To Release From An Aspen-Pine Overstorey, A.B. Berry
Response Of Suppressed Conifer Seedlings To Release From An Aspen-Pine Overstorey, A.B. Berry
Aspen Bibliography
No abstract provided.
Five-Year Growth And Development In A Virgin Arizona Mixed Conifer Stand, G.J. Gottfried
Five-Year Growth And Development In A Virgin Arizona Mixed Conifer Stand, G.J. Gottfried
Aspen Bibliography
No abstract provided.
Estimating Water Yield Differences Between Hardwood And Pine Forests: An Application Of Net Precipitation Data, Elon S. Verry
Estimating Water Yield Differences Between Hardwood And Pine Forests: An Application Of Net Precipitation Data, Elon S. Verry
Aspen Bibliography
No abstract provided.
Phenotypic Variation Of Trembling Aspen In Western North America, B.V. Barnes
Phenotypic Variation Of Trembling Aspen In Western North America, B.V. Barnes
Aspen Bibliography
No abstract provided.
Selective Cutting To Release White Spruce In 75- To 100-Year-Old White Spruce-Trembling Aspen Stands, Saskatchewan, G.A. Steneker
Selective Cutting To Release White Spruce In 75- To 100-Year-Old White Spruce-Trembling Aspen Stands, Saskatchewan, G.A. Steneker
Aspen Bibliography
No abstract provided.