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Keyword: forest structure

Global importance of large-diameter trees

Publications Posted on: August 20, 2018
We examined the contribution of large trees to forest density, richness and biomass using a global network of 48 large (from 2 to 60 ha) forest plots representing 5,601,473 stems across 9,298 species and 210 plant families.

Fuels planning: science synthesis and integration; forest structure and fire hazard fact sheet 01: forest structure and fire hazard overview

Publications Posted on: August 01, 2018
Many managers and policymakers guided by the National Environmental Policy Act process want to understand the scientific principles on which they can base fuel treatments for reducing the size and severity of wildfires. These Forest Structure and Fire Hazard fact sheets discuss how to estimate fire hazard, how to visualize fuel treatments, and how the role of silviculture can help in managing forests to reduce crown fires.

Forest structure and fire hazard in dry forests of the Western United States

Publications Posted on: August 01, 2018
Fire, in conjunction with landforms and climate, shapes the structure and function of forests throughout the Western United States, where millions of acres of forest lands contain accumulations of flammable fuel that are much higher than historical conditions owing to various forms of fire exclusion.

Silviculture's role in managing boreal forests

Publications Posted on: March 30, 2018
Boreal forests, which are often undeveloped, are a major source of raw materials for many countries. They are circumpolar in extent and occupy a belt to a width of 1000 km in certain regions. Various conifer and hardwood species ranging from true firs to poplars grow in boreal forests. These species exhibit a wide range of shade tolerance and growth characteristics, and occupy different successional positions.

Principles and practices for the restoration of ponderosa pine and dry mixed-conifer forests of the Colorado Front Range

Publications Posted on: January 26, 2018
Wildfires have become larger and more severe over the past several decades on Colorado’s Front Range, catalyzing greater investments in forest management intended to mitigate wildfire risks. The complex ecological, social, and political context of the Front Range, however, makes forest management challenging, especially where multiple management goals including forest restoration exist.

Goshawks, bark beetles, and timber management: Can they coexist?

Science Spotlights Posted on: October 12, 2017
Wildlife habitat and timber production are critical elements of the management of many National Forests. The Black Hills National Forest has provided a thriving timber economy for over 100 years. The forest also provides habitat for the northern goshawk, which has been severely impacted by mountain pine beetles. 

Abundance of Black-backed woodpeckers and other birds in relation to disturbance and forest structure in the Black Hills and Bear Lodge Mountains of South Dakota and Wyoming

Publications Posted on: June 22, 2017
Natural disturbances, such as wildfire and mountain pine beetle (Dentroctonus ponderosae, hereafter MPB) infestations, are two sources of large-scale disturbance that can significantly alter forest structure in the Black Hills.

New forest health monitoring methods tested and found effective

Science Spotlights Posted on: August 18, 2016
Disturbance processes such as insect outbreaks are natural disturbance agents in forests. The frequency and intensity of disturbances is expected to increase as the climate changes. Tools are needed to assist managers in determining how disturbances affect the sustainability of forests. RMRS scientists, in collaboration with the index developers, tested this new quantitative forest structural sustainability index on lodgepole pine forests in northern Colorado that had been heavily impacted by mountain pine beetles.

The 115-year bark beetle saga in the Black Hills

Science Spotlights Posted on: August 17, 2016
Forest restoration, resilience, and wildfire are major issues of contemporary forest management. Integral to these issues is the destruction, understanding, and management of mountain pine beetles. This is the story of 115 years of mountain pine beetles, associated organisms and the people that study them in the Black Hills. It reads much like a film-noir. This research informs forest policy and management throughout western North America.  

Using structural sustainability for forest health monitoring and triage: Case study of a mountain pine beetle (Dendroctonusponderosae)-impacted landscape

Publications Posted on: August 16, 2016
Heavy disturbance-induced mortality can negatively impact forest biota, functions, and services by drastically altering the forest structures that create stable environmental conditions. Disturbance impacts on forest structure can be assessed using structural sustainability - the degree of balance between living and dead portions of a tree population’s size-class distribution - which is the basis of baseline mortality analysis.