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Keyword: char

Indicators of burn severity at extended temporal scales: a decade of ecosystem response in mixed-conifer forests of western Montana

Publications Posted on: December 12, 2017
We collected field and remotely sensed data spanning 10 years after three 2003 Montana wildfires to monitor ecological change across multiple temporal and spatial scales.

Field attributes and satellite indices for "The Relationship of Multispectral Satellite Imagery to Immediate Fire Effects"

Datasets Posted on: August 27, 2015
This data publication contains satellite image-derived burn severity indices as well as fire effects measured after eight large wildfire events in the Western United States.

Relationship of post-fire ground cover to surface fuel loads and consumption in longleaf pine ecosystems

Publications Posted on: September 29, 2014
The RxCADRE research team collected multi-scale measurements of pre-, during, and post-fire variables on operational prescribed fires conducted in 2008, 2011, and 2012 in longleaf pine ecosystems in the southeastern USA. Pre- and post-fire surface fuel loads were characterized in alternating pre- and post-fire clip plots systematically established within burn units.

Thermochemical properties of flame gases from fine wildland fuels

Publications Posted on: February 15, 2012
Describes a theoretical model for calculating thermochemical properties of the gaseous fuel that burns in the free flame at the edge of a spreading fire in fine forest fuels. Predicted properties are the heat of combustion, stoichiometric air/fuel mass ratio, mass-averaged temperature, and mass fraction of unburned fuel in the gas mixture emitted from the flame-producing zone.

GSD Update: Checking the range for signs of climate change in the past, present and future

Publications Posted on: October 03, 2011
The July 2011 inaugural issue of GSDUpdate: Checking the Range for Signs of Climate Change In the Past, Present and Future, a research review of the Program, focuses on the efforts toward understanding the role of climate in shaping the environment.

Spectral analysis of charcoal on soils: Implications for wildland fire severity mapping methods

Publications Posted on: March 30, 2011
Recent studies in the Western United States have supported climate scenarios that predict a higher occurrence of large and severe wildfires. Knowledge of the severity is important to infer long-term biogeochemical, ecological, and societal impacts, but understanding the sensitivity of any severity mapping method to variations in soil type and increasing charcoal (char) cover is essential before widespread adoption.

Remote sensing for prediction of 1-year post-fire ecosystem condition

Publications Posted on: November 25, 2009
Appropriate use of satellite data in predicting >1 year post-fire effects requires remote measurement of surface properties that can be mechanistically related to ground measures of post-fire condition.

Demographic and habitat requirements for conservation of bull trout

Publications Posted on: April 15, 2008
Elements in bull trout biology, population dynamics, habitat, and biotic interactions important to conservation of the species are identified. Bull trout appear to have more specific habitat requirements than other salmonids, but no critical thresholds of acceptable habitat condition were found. Size, temporal variation, and spatial distribution are likely to influence the stability of local and regional populations.

The relationship of multispectral satellite imagery to immediate fire effects

Publications Posted on: March 14, 2008
The Forest Service Remote Sensing Applications Center (RSAC) and the U.S. Geological Survey Earth Resources Observation and Science (EROS) Data Center produce Burned Area Reflectance Classification (BARC) maps for use by Burned Area Emergency Response (BAER) teams in rapid response to wildfires.

Evaluation of linear spectral unmixing and deltaNBR for predicting post-fire recovery in a North American ponderosa pine forest

Publications Posted on: November 26, 2007
The Differenced Normalized Burn Ratio (deltaNBR) is widely used to map post-fire effects in North America from multispectral satellite imagery, but has not been rigorously validated across the great diversity in vegetation types. The importance of these maps to fire rehabilitation crews highlights the need for continued assessment of alternative remote sensing approaches.