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Stand density in relation to biological functions in young western larch forests

Publications Posted on: August 17, 2018
Dynamic change - that is what we see in the establishment and development of western larch (Larix occidentalis) forests. Spawned by traumatic events such as fire, harvesting, or post- harvest treatments that prepare receptive seedbeds, larch regenerates promptly and more often than not, excessively over much of its natural range (Schmidt and others 1976).

Stocktype and vegetative competition influences on Pseudotsuga menziesii and Larix occidentalis seedling establishment

Publications Posted on: May 31, 2018
Douglas fir (Pseudotsuga menziesii var. glauca (Mayr) Franco), and western larch (Larix occidentalis Nutt.) are species of ecological and commercial importance that occur throughout the Western United States. Effective reforestation of these species relies on successful seedling establishment, which is affected by planting stock quality, stocktype size, and site preparation techniques.

Cone and seed production of western larch in response to girdling and nitrogen fertilization - an update

Publications Posted on: May 11, 2018
Western larch (Larix occidentalis Nutt.) is a sporadic cone and seed producer. Because the species is such an important component of the -Northern Rocky Mountain forests, methods of increasing seed production are needed. Girdling, fertilizing, and a combination of the two were used on 75-year-old western larch in northern Idaho.

Response of western larch to site preparation

Publications Posted on: May 11, 2018
Western larch (Larix occidentalis Nutt.) regenerates and grows adequately on a variety of soils and sites. Mineral soil and burned-over surfaces are excellent for natural regeneration, but organic surfaces also provide adequate seedbeds. Planted western larch are aggressive root producers especially in moist soils. Best development occurs in soils with high organic matter content. Competing vegetation often reduces performance.

Characteristics of masticated particles in mixed-conifer forests of the western United States: Moisture-loss tests

Datasets Posted on: March 15, 2018
This data publication contains the results of three separate moisture tests on masticated fuels collected from mixed-conifer forests in 14 study locations. These data were collected from 2012 through 2016 as part of the MASTIDON project.

Characteristics of masticated particles in mixed-conifer forests of the western United States: Experimental burns and smoldering tests

Datasets Posted on: March 15, 2018
This data publication contains the results from 45 experimental burns and 48 smoldering tests on masticated materials from mixed-conifer forests. These data were collected from 15 study locations from 2012 through 2016 as part of the MASTIDON project. The MASTIDON project was a four-year study to describe the phyical characteristics of masticated materials that were treated with four different cutting heads in xeric and mesic environments.

Characteristics of masticated particles in mixed-conifer forests of the western United States: Shape, particle, and fuel load characteristics

Datasets Posted on: March 15, 2018
This data publication contains the results of sorting masticated particles from mixed-conifer forests in 15 study locations. These data were collected from 2012 through 2016 as part of the MASTIDON project. The MASTIDON project was a four-year research project to study how masticated material differs when treated with different cutting machines and how the masticated particles decompose when left on the ground for multiple years.

Early forest thinning changes aboveground carbon distribution among pools, but not total amount

Publications Posted on: January 12, 2017
Mounting concerns about global climate change have increased interest in the potential to use common forest management practices, such as forest density management with thinning, in climate change mitigation and adaptation efforts. Long-term effects of forest density management on total aboveground C are not well understood, especially for precommercial thinning (PCT) implemented very early in stand development.

The making of a scar: How fire scars develop in trees

Science Spotlights Posted on: September 12, 2016
When trees are injured they develop physical and chemical boundaries around the injury wound to resist infection. Trees also grow new wood to close over the injured place. Injuries caused by fires result in fire scars and we use the patterns of scarring among many trees to understand when and how often fires burn.  This research helps to understand the biological process of fire scar formation and use it to improve fire history analysis.

Western larch spacing study: Over 60 years of growth

Projects Posted on: August 24, 2016
Researchers are using existing long-term studies to answer questions about overstory and understory carbon accumulation in western larch forests.Four western larch stands were remeasured in the summer of 2015. Stand growth and carbon sequestration were evaluated by estimating the carbon pools of live trees, understory vegetation, dead woody material, and the forest floor (decomposing plant material).

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