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Ecosystem

Displaying 2281 - 2300 of 6051 results

The grasslands of the northern Great Plains (NGP) region of North America are considered endangered ecosystems and priority conservation areas yet have great ecological and economic importance. Grasslands in the NGP are no longer self‐regulating…
Author(s): Lora Perkins, Marissa A. Ahlering, Diane L. Larson
Year Published:

The biophysical feedbacks of forest fire on Earth’s surface radiative budget remain uncertain at the global scale. Using satellite observations, we show that fire-induced forest loss accounts for about 15% of global forest loss, mostly in northern…
Author(s): Zhihua Liu, Ashley Ballantyne, L. Annie Cooper
Year Published:

Socioeconomic and global climate changes are modifying fire regimes towards larger and more intense fires. Studying the response of organisms to the occurrence of large fires is crucial to anticipate shifts in patterns of biodiversity in fire-prone…
Author(s): Alberto Muñoz, Ángel M. Felicísimo, Xavier Santos
Year Published:

Fires have significant impacts on soil erosion and water supply that may be exacerbated by future climate. The aims of this study were: To simulate the effects of a large fire event in the SWAT (Soil and Water Assessment Tool) hydrological model…
Author(s): Claudia Carvalho-Santos, Bruno Marcos, João Pedro Nunes, Adrián Regos, Elisa Palazzi, Silvia Terzago, Antonio T. Monteiro, João P. Honrado
Year Published:

Wildfires have increased in frequency, duration, and intensity worldwide. Climate change, drought, and other factors have not only increased susceptibility to wildfires, but have also increased the duration of the season. There are a number of…
Author(s): Setrige W. Crawford, Kamran Eftekhari Shahroudi
Year Published:

There is evidence that forest resiliency is declining in the western US due to recent increases in both areas burned by wildfire and the number of large fires. Fire refugia may increase forest resiliency; however, for land managers to incorporate…
Author(s): Anthony Martinez, Arjan J. H. Meddens, Crystal A. Kolden, Andrew T. Hudak
Year Published:

Background: In order to examine the impact of disasters on adolescent mental health, this study compared population mental health survey data from two communities in Alberta, Canada: Fort McMurray, which experienced a major natural disaster, and Red…
Author(s): Matthew R. G. Brown, Vincent I. O. Agyapong, Andrew J. Greenshaw, Ivor Cribben, Pamela Brett-MacLean, Julie Drolet, Caroline McDonald-Harker, Joy Omeje, Monica Mankowsi, Shannon Noble, Deborah Kitching, Peter H. Silverstone
Year Published:

Fuels reduction treatments are common in ponderosa pine ecosystems of the interior western United States, but the long-term effects on many key ecosystem attributes remain poorly understood, including: tree growth and mortality; forest fuel loads;…
Author(s): Christopher R. Keyes, Sharon M. Hood, Anna Sala, Duncan C. Lutes
Year Published:

When biotic interactions such as disease alter both the seed production capacity of stands, and seedling survivorship, the relative importance of seed availability versus substrate specificity may alter future regeneration opportunities for plant…
Author(s): Vernon S. Peters, Darcy R. Visscher
Year Published:

Wildland firefighters working in remote environments with steep terrain, uneven ground, variable temperatures and fluctuating elevations cultivate injury risk. The purpose of this study was to understand types of injuries and illnesses wildland…
Author(s): Valerie J. Moody, Taylor J. Purchio, Charles G. Palmer
Year Published:

Wildland-urban interface wildfires have been a significant threat in many countries. This paper presents an integer two-stage stochastic goal programming model for comprehensive, efficient response to a wildfire including firefighting resource…
Author(s): Siqiong Zhou, Ayca Erdogan
Year Published:

Contemporary fire regimes of Canadian forests have been well documented based on forest fire records between the late 1950s to 1990s. Due to known limitations of fire datasets, an analysis of changes in fire-regime characteristics could not be…
Author(s): Chelene C. Krezek-Hanes, Xianli Wang, Piyush Jain, Marc-Andre Parisien, John M. Little, Michael D. Flannigan
Year Published:

Heat injuries sustained in a fire can initiate a cascade of complex mechanisms that affect the physiology of trees after fires. Uncovering the exact physiological mechanisms and relating specific injuries to whole‐plant and ecosystem functioning is…
Author(s): Andreas Bär, Sean T. Michaletz, Stefan Mayr
Year Published:

Recent studies have shown that organic aerosol (OA) could have a nontrivial role in atmospheric light absorption at shorter visible wavelengths. Good estimates of OA light absorption are therefore necessary to better estimate radiative forcing due…
Author(s): Nishit J. Shetty, Apoorva Pandey, Stephen P. Baker, Wei Min Hao, Rajan K. Chakrabarty
Year Published:

This work presents development of an algorithm to reduce the spatial uncertainty of active fire locations within the 1 km MODerate resolution Imaging Spectroradiometer (MODIS Aqua and Terra) daytime detection footprint. The algorithm is developed…
Author(s): Sanath S. Kumar, Joshua J. Picotte, Birgit Peterson
Year Published:

Growth‐stage optimization (GSO) offers a new approach to biodiversity conservation in fire‐prone regions by estimating the optimal distribution of vegetation growth stages that maximize a species diversity index. This optimal growth‐stage structure…
Author(s): Matthew P. Chick, Alan York, Holly Sitters, Julian Di Stefano, Craig R. Nitschke
Year Published:

Seed mixes used for postfire seeding in the Great Basin are often selected on the basis of short-term rehabilitation objectives, such as ability to rapidly establish and suppress invasive exotic annuals (e.g., cheatgrass, Bromus tectorum L.). Longer…
Author(s): Jeffrey E. Ott, Francis F. Kilkenny, Daniel D. Summers, Tyler W. Thompson
Year Published:

The aim of this study was to determine the effects of burn severity on soil properties (chemical, biochemical and microbiological) in fire-prone pine ecosystems three years after fire. To achieve these goals, we selected two large wildfires that…
Author(s): Víctor Fernández-García, Jessica R. Miesel, Manuel Jaime Baeza, Elena Marcos, Leonor Calvo
Year Published:

The combination of direct human influences and the effects of climate change are resulting in altered ecological disturbance regimes, and this is especially the case for wildfires. Many regions that historically experienced low–moderate severity…
Author(s): Clark Richter, Marcel Rejmánek, Jesse E. D. Miller, Kevin R. Welch, JonahMaria Weeks, Hugh Safford
Year Published:

Improving predictions of restoration outcomes is increasingly important to resource managers for accountability and adaptive management, yet there is limited guidance for selecting a predictive model from the multitude available. The goal of this…
Author(s): David M Barnard, Matthew J. Germino, David S. Pilliod, Robert S. Arkle, Cara Applestein, Bill E. Davidson, Matthew R. Fisk
Year Published: