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Keyword: forest health

Discovering key relationships between forest disease/health and microbial communities

Publications Posted on: September 30, 2020
The forest pathology paradigm is shifting to include complex ecological interactions that contribute to disease development, such as 1) microbial communities associated with the soil or host plant that suppress or enhance disease; 2) invasive pathogens that are associated with new hosts in new environments; 3) host and pathogen populations that display different adaptation and ecological behaviors; 4) induced host resistance to disease that is

Long-term forest health implications of roadlessness

Publications Posted on: September 29, 2020
The 2001 Forest Service Roadless Rule prohibits roadbuilding in forests across an area equivalent to the combined states of New York and Maine (236 000 km2). There have been recent assertions that roads are needed to prevent fire and to keep forests healthy.

Assessment and response to bark beetle outbreaks in the Rocky Mountain area

Publications Posted on: June 22, 2020
Bark beetles act as "agents of change" within the conifer forests of the Rocky Mountain area. They play a critical role in the development, senescence, and rebirth of Western forests. Bark beetle-caused tree mortality can be extensive, covering thousands of acres.

Lichen elemental indicators for air pollution in Eastern United States forests; a pilot study in the upper Midwest

Publications Posted on: April 07, 2020
Five lichen species were evaluated as element-content pollution bioindicators for a pilot study in Wisconsin and adjacent U.S. states, using data for 20 elements. Goodquality elemental data for aluminum, cobalt, chromium, copper, iron, nitrogen, and sulfur—mostly from nonspecialist U.S.

Effects of livestock grazing on stand dynamics and soils in upland forests of the Interior West

Publications Posted on: December 23, 2019
Many ponderosa pine and mixed-conifer forests of the western, interior United States have undergone substantial structural and compositional changes since settlement of the West by Euro-Americans. Historically, these forests consisted of widely spaced, fire-tolerant trees underlain by dense grass swards. Over the last 100 years they have developed into dense stands consisting of more fire-sensitive and disease-susceptible species.

Climate change vulnerability assessments for the Front Range and Colorado National Grasslands

Projects Posted on: April 24, 2019
Climate Change Vulnerability Assessment in Support of Front Range National Forests and Colorado National Grasslands for Forest Plan Revision, Plan Amendments, and Project-Level Planning.

First-year postfire and postharvest soil temperatures in aspen and conifer stands

Publications Posted on: August 01, 2018
Aspen (Populus tremuloides Michx.) stands are in decline throughout the Interior Western United States because of fire suppression, overbrowsing by domestic livestock and native ungulates, and forest succession.

Our forests in the [water] balance

Pages Posted on: May 15, 2018
  Climate change is not only causing temperatures to rise, it is also altering the amount and type of precipitation that falls across the western United States. Research shows a trend of increasingly dry “dry years,” meaning droughts are becoming more severe and streams are flowing lower during these periods. Forests play an important role in delivering high quality water to streams, but climate change is affecting this role. Drought can cause tree mortality due to lack of water or reduced resistance to insects and disease. Dry fuels and stressed vegetation in forests also increases the potential for large wildfires. When many trees die in a forest fire or from disease or insect outbreaks, the amount of water entering nearby streams often increases. However, so does the delivery of sediment to these streams through erosion. These changes call on resource managers and communities in the West to start conversations today about addressing water supplies in the future. In addition, silviculturists, fuel specialists, and aquatic ecologists can work together to maintain a holistic view of ecosystems that, above all, considers where forests fit in the water balance.

Doing more with the core: Proceedings of the 2017 Forest Inventory and Analysis (FIA) Science Stakeholder Meeting; 2017 October 24- 26; Park City, UT

Publications Posted on: October 17, 2017
The Forest Service’s Forest Inventory and Analysis Program (FIA) is the primary source of information about our forests’ status and trends. A network of nationally consistent field observations forms FIA’s core, and active collaboration with clients and peer organizations ensures that the resulting inventory remains agile, comprehensive, and relevant.

Observed and anticipated impacts of drought on forest insects and diseases in the United States

Publications Posted on: July 15, 2016
Future anthropogenic-induced changes to the earth’s climate will likely include increases in temperature and changes in precipitation that will increase the frequency and severity of droughts. Insects and fungal diseases are important disturbances in forests, yet understanding of the role of drought in outbreaks of these agents is limited. Current knowledge concerning the effects of drought on herbivorous insect and pathogen outbreaks in U.S.