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Keyword: Larix occidentalis

Soil and vegetation responses to 1967-1968 disturbances on the Miller Creek Demonstration Forest: thirty year data

Datasets Posted on: December 30, 2020
This data publication includes vegetation and soil data acquired 30-years after an experiment was initiated (1967-1968) on the Miller Creek Demonstration Forest in western Montana, USA, to determine the effects of harvest in combination with different prescribed fire severities on conifer regeneration. A wildfire in August 1967 burned or reburned initial plots.

Vegetative and edaphic responses in a northern mixed conifer forest three decades after harvest and fire: Implications for regeneration and carbon and nitrogen pools

Publications Posted on: December 11, 2020
Research Highlights: This experiment compares a range of combinations of harvest, prescribed fire, and wildfire. Leveraging a 30-year-old forest management-driven experiment, we explored the recovery of woody species composition, regeneration of the charismatic forest tree species Larix occidentalis Nutt., and vegetation and soil carbon (C) and nitrogen (N) pools.

Warmer temperatures directly and indirectly affect western larch regeneration

Science Spotlights Posted on: August 25, 2020
Forest inventory data reveal direct and indirect effects of climate on western larch regeneration. A direct effect of climate is the shift of western larch regeneration toward cooler, drier sites and less regeneration at warmer, wetter sites. An indirect effect is that warmer temperatures are linked to increased wildfire, and western larch seedlings were more prevalent at recently disturbed sites.

Western larch regeneration responds more strongly to site and indirect climate factors than to direct climate factors

Publications Posted on: June 10, 2020
Substantial shifts in the distribution of western larch (Larix occidentalis Nutt.) are predicted during the coming decades in response to changing climatic conditions. However, it is unclear how the interplay between direct climate effects, such as warmer, drier conditions, and indirect climate effects, such as predicted increases in fire disturbance, will impact fire-adapted species such as western larch.

Stewardship of western larch forests in an era of uncertainty

Projects Posted on: April 15, 2020
Northern Rockies managers and scientists are collaborating in a nation-wide silvicultural study to develop adaptive practices that support the endurance of these iconic forests under changing climate.

Initiating climate adaptation in a western larch forest

Publications Posted on: September 10, 2019
Western larch forests are iconic in the interior northwest, and here we document the preemptive steps that scientists and managers are taking to steward these forests into the future. Changing climate is forecast to have acute and chronic impacts on growth and disturbance in western larch forests.

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).

Density-dependent woody detritus accumulation in an even-aged, single-species forest

Publications Posted on: August 17, 2018
Deadwood in forests influences fire intensity, stores carbon and nutrients, and provides wildlife habitat. We used a 54-year-old density management experiment in Larix occidentalis Nutt. forests to evaluate density dependence of woody detritus accumulation. Based on self-thinning theory, we expected woody detritus produced by the current stand to increase with stand density.

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.

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.