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Keyword: natural disturbance

Assessment of the influence of disturbance, management activities, and environmental factors on carbon stocks of U.S. national forests

Publications Posted on: December 06, 2019
This report assesses how carbon stocks at regional scales and in individual national forests are affected by factors such as timber harvesting, natural disturbances, climate variability, increasing atmospheric carbon dioxide concentrations, and nitrogen deposition.

Disturbance processes and ecosystem management

Publications Posted on: August 01, 2018
This paper is intended to broaden awareness and help develop consensus among USDA Forest Service scientists and resource managers about the role and significance of disturbance in ecosystem dynamics and, hence, resource management. To have an effective ecosystem management policy, resource managers and the public must understand the nature of ecological resiliency and stability and the role of natural disturbance on sustainability.

Ecology, silviculture, and management of Black Hills ponderosa pine

Publications Posted on: August 01, 2018
This paper presents a broad-based synthesis of the general ecology of the ponderosa pine ecosystem in the Black Hills. This synthesis contains information and results of research on ponderosa pine from numerous sources within the Black Hills ecosystem.

Canada lynx living in spruce beetle impacted forests

Projects Posted on: July 13, 2015
Canada lynx, and their primary prey snowshoe hares, live in high-elevation spruce-fir forests, which are increasingly modified by spruce-bark beetle outbreaks. The goal of our research is to combine lynx use of insect-impacted forests with measures of forest condition.  Our results will inform forest prescriptions that facilitate timber-salvage and lynx conservation.

Tracking Canada lynx in insect-impacted forests

Media Gallery Posted on: July 13, 2015
Canada lynx, and their primary prey snowshoe hares, live in high-elevation spruce-fir forests, which are increasingly modified by spruce-bark beetle outbreaks.  One important management question is how the timber from these insect-impacted forests can be salvaged in ways that also facilitate lynx conservation.  This issue is of particular concern since climate change is expected to increase the severity of insect-related disturbance in conifer forests. 

Lynx and snowshoe hare response to spruce-beetle tree mortality: Evaluating habitat suitability and timber salvage in spruce-fir forests

Projects Posted on: May 20, 2015
By 2013, a spruce beetle outbreak impacted 85% of the mature spruce-fir forests on the Rio Grande National Forest. These spruce-fir forests provided some of the highest quality lynx habitat in the state. The goal of this project is to research the forest structures and compositions that lynx and snowshoe hare depend within landscapes altered by spruce bark beetle outbreak, in relation to increased post-beetle forest management activities from timber salvage.

Characteristics of gaps and natural regeneration in mature longleaf pine flatwoods ecosystems

Publications Posted on: April 09, 2007
Developing uneven-aged structure in mature stands of longleaf pine requires scientifically based silvicultural systems that are reliable, productive and sustainable. Understanding seedling responses to varying levels of site resource availability within forest gaps is essential for effectively converting even-aged stands to uneven-aged stands.

Impacts of natural disturbance on soil carbon dynamics in forest ecosystems

Publications Posted on: July 27, 2006
Forest soils are entities within themselves, self-organized and highly resilient over time. The transfer of energy bound in carbon (C) molecules drives the organization and functions of this biological system (Fisher and Binkley, 2000; Paul and Clark, 1996). Photosynthetic organisms reduce atmospheric C and store energy from solar radiation in the formation of complex C molecules.

Disturbance, scale, and boundary in wilderness management

Publications Posted on: March 03, 2006
Natural disturbances are critical to wilderness management. This paper reviews recent research on natural disturbance and addresses the problem of managing for disturbances in a world of human-imposed scales and boundaries. The dominant scale issue in disturbance management is the question of patch dynamic equilibrium.