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Keyword: fire

Effects of repeated prescribed fires on the structure, composition, and regeneration of mixed-oak forests in Ohio

Publications Posted on: April 14, 2021
This study quantifies prescribed fire effects at four sites in southern Ohio, from 1995 to 2002. Each site had three treatment units: an unburned control, a unit burned 2x (1996 and 1999), and a unit burned 4 x (1996-1999). Vegetation plots were stratified by an integrated moisture index (IMI) into xeric, intermediate, and mesic classes.

Development of a new open-source tool to map burned area and burn severity

Publications Posted on: April 11, 2021
Accurate and complete geospatial fire occurrence records are important in determining postfire effects, emissions, hazards, and fuel loading inventories. Currently, the Monitoring Trends in Burn Severity (MTBS) project maps the fire perimeter and burn severity of all large fires on public lands.

Using prescribed burn fire severity assessments to estimate postburn hydrologic risk

Publications Posted on: April 11, 2021
Research conducted via the Australian Bushfire Cooperative Research Centre (BCRC) developed methods for assessing postfire hydrologic risk to human life, infrastructure, and water quality. End users of BCRC products identified the project for utilization, and a small team of practitioners and researchers was established. The utilization team developed a three-phase plan.

Medusahead response 6 years after burning and seeding in sagebrush steppe

Publications Posted on: April 11, 2021
A prescribed burn for western juniper (Juniperus occidentalis) reduction at Crooked River National Grassland in Oregon was conducted in 2011. Foliar cover by species or genus and functional group was measured every other year for 6 years to evaluate response to four treatments: unburned control, burned, burned-plus-nativeseeding, and burned-plus-cultivar seeding.

Climate adaptation [Chapter L.]

Publications Posted on: March 29, 2021
Average annual temperature over the contiguous United States has increased by 0.7 degrees Celsius (°C; 1.2 degrees Fahrenheit (°F) for the period 1986-2016 compared to 1901-1960 (Vose and others, 2017). Warming temperatures, increased frequency of heat waves, and possibly drought have likely contributed to longer fire seasons, more extreme fire weather, and consequently, larger amounts of sagebrush (Artemisia spp.) burned each year.

Effects of elevation and selective disturbance on soil climate and vegetation in big sagebrush communities

Publications Posted on: March 29, 2021
Changing climatic conditions prompt concerns about vegetation response to disturbance under future compared to past conditions. In this long-term study, we examined soil climate and vegetation differences at lower, mid, and upper elevations in two separate locations in the Great Basin, USA.

Decadal changes in fire frequencies shift tree communities and functional traits

Publications Posted on: March 15, 2021
Global change has resulted in chronic shifts in fire regimes. Variability in the sensitivity of tree communities to multi-decadal changes in fire regimes is critical to anticipating shifts in ecosystem structure and function, yet remains poorly understood.

Recent deforestation drove the spike in Amazonian forests

Publications Posted on: March 10, 2021
Tropical forests are of global importance even though they only cover around 10% of the Earth’s land surface. They store large amounts of carbon and host between one-half and two-thirds of the world’s species (Lewis 2006). Small changes in the tropical moist forest - the most biodiverse biome within the tropical forests - may lead to global impacts on climate dynamics and warming, water cycles, and the loss of biodiversity.

Physiological responses to fire that drive tree mortality

Publications Posted on: March 09, 2021
A summer storm passes, flashing lightning but little rain and a fire starts to grow. Flames lick the bases of trees, charring stems and strong winds fan the fire at times, causing the flames to scorch foliage, as it burns through a forest. The fate of these burned trees after the flames are doused is one of intense interest. Will the forest become a carbon source? Will there be suitable wildlife habitat?

Spotted owls and forest fire: Comment

Publications Posted on: January 04, 2021
Western North American forest ecosystems are experiencing rapid changes in disturbance regimes because of climate change and land use legacies (Littell et al. 2018).