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Keyword: fire severity

Contemporary fire regimes provide a critical perspective on restoration needs in the Mexico-United States borderlands

Publications Posted on: March 27, 2021
The relationship between people and wildfire has always been paradoxical: fire is an essential ecological process and management tool, but can also be detrimental to life and property. Consequently, fire regimes have been modified throughout history through both intentional burning to promote benefits and active suppression to reduce risks.

Next generation fire severity mapping

Datasets Posted on: December 30, 2020
The geospatial products described and distributed here depict the probability of high-severity fire, if a fire were to occur, for several ecoregions in the contiguous western US.

Fire severity: mapping past fires and predicting the future

Events Posted on: December 07, 2020
In this webinar, Greg Dillon and Sean Parks highlighted recent advancements in modeling and predictive mapping of near-future burn severity.

A method for creating a burn severity atlas: An example from Alberta, Canada

Publications Posted on: November 18, 2020
Wildland fires are globally widespread, constituting the primary forest disturbance in many ecosystems. Burn severity (fire-induced change to vegetation and soils) has short-term impacts on erosion and post-fire environments, and persistent effects on forest regeneration, making burn severity data important for managers and scientists.

Warmer and drier fire seasons contribute to increases in area burned at high severity in western US forests from 1985 to 2017

Publications Posted on: November 18, 2020
Increases in burned area across the western United States (US) since the mid‐1980s have been widely documented and linked partially to climate factors, yet evaluations of trends in fire severity are lacking. Here we evaluate fire severity trends and their interannual relationships to climate for western US forests from 1985 to 2017.

Projected climate-fire interactions drive forest to shrubland transition on an Arizona Sky Island

Publications Posted on: September 30, 2020
Climate stressors on the forests of the American Southwest are shifting species distributions across spatial scales, lengthening potential fire seasons, and increasing the incidence of drought and insect-related die-off. A legacy of fire exclusion in forests once adapted to frequent surface fires is exacerbating these changes.

Climate relationships with increasing wildfire in the southwestern US from 1984 to 2015

Publications Posted on: September 30, 2020
Over the last several decades in forest and woodland ecosystems of the southwestern United States, wildfire size and severity have increased, thereby increasing the vulnerability of these systems to type conversions, invasive species, and other disturbances. A combination of land use history and climate change is widely thought to be contributing to the changing fire regimes.

Development of a Severe Fire Potential map for the contiguous United States

Publications Posted on: August 17, 2020
Burn severity is the ecological change resulting from wildland fires. It is often mapped by using prefire and postfire satellite imagery and classified as low, moderate, or high. Areas burned with high severity are of particular concern to land managers and others because postfire vegetation, soil, and other important ecosystem components can be highly altered.

Effects of fire on grassland soils and water: A review

Publications Posted on: June 08, 2020
Grasslands occur on all of the continents. They collectively constitute the largest ecosystem in the world, making up 40.5% of the terrestrial land area, excluding Greenland and Antarctica. Grasslands are not entirely natural because they have formed and developed under natural and anthropogenic pressures.

Effects of fire on grassland soils and water

Science Spotlights Posted on: June 02, 2020
Natural wildfires have been important in creating and maintaining grassland ecosystems for millions of years, and prescribed fire is an important component of modern grassland management. Land managers want to understand the effects of fire on grasslands and the ecosystem services they provide, particularly as wildfires become more frequent due to drought.