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Ecosystem

Displaying 1121 - 1140 of 5894 results

This feature explores topics of enduring ecological concern – fire regimes, climate change, and forest management of the North American West. The authors describe the dual challenges of past forest management legacies and fire exclusion confronted…
Author(s): David S. Schimel, Juan C. Corley
Year Published:

The loading of dissolved organic carbon (DOC) from soils to inland waters and ultimate transport to the ocean is a critical flux pathway in the terrestrial biosphere carbon cycle. Fires can significantly affect this flux through biogeochemical…
Author(s): Xinyuan Wei, Daniel J. Hayes, Ivan Fernandez
Year Published:

Every year, high numbers of firefighters are injured at fire incidents. A primary cause of moderate to severe injury can be linked to the protective garments worn by firefighters and understanding the limits of these protective garments is crucial…
Author(s): Thomas B. B. Clarke, Mark Walker, Frank Mendham
Year Published:

Exposure to wildfire smoke continues to be a growing threat to public health, yet the chemical components in wildfire smoke that primarily drive toxicity and associated disease are largely unknown. This study utilized a suite of computational…
Author(s): Julia E. Rager, Jeliyah Clark, Lauren A. Eaves, Vennela Avula, Nicole M. Niehoff, Yong Ho Kim, Ilona Jaspers, M. Ian Gilmour
Year Published:

Air pollution, particularly fine and ultrafine particulate matter aerosols, underlies a wide range of communicable and non-communicable disease affecting many systems including the cardiopulmonary and immune systems, and arises primarily from…
Author(s): Ira Leifer, Michael T. Kleinman, Donald R. Blake, David Tratt, Charlotte Marston
Year Published:

Strong and variable winds in thunderstorm outflow boundaries interact with wildland fires, often spreading flames faster to threaten firefighter safety and amplify economical destruction. These boundaries are difficult to detect in complex terrain…
Author(s): Katja Friedrich, Julie Lundquist
Year Published:

Fire frequency and severity in southern California and across the western United States is increasing, posing a concern to the safety and well-being of communities and ecosystems. Increased aridity coupled with water stressed vegetation from…
Author(s): Alicia M. Kinoshita, Brenton A. Wilder
Year Published:

Numerous studies have linked outdoor levels of PM2.5, PM10, NO2, O3, SO2, and other air pollutants to significantly higher rates of Covid 19 morbidity and mortality, although the rate in which specific concentrations of pollutants increase Covid 19…
Author(s): Luke Curtis
Year Published:

Smoke, as a prominent character of combustion, is widely regarded as a signal of forest fire. Existing in a video-based smoke root detection methods on rely the distance between smoke and the lens, which is one of the most challenging parts. In…
Author(s): Yu Gao, Pengle Cheng
Year Published:

Recent increases in destructive wildfires are driving a need for empirical research documenting factors that contribute to structure loss. Existing studies show that fire risk is complex and varies geographically, and the role of vegetation has been…
Author(s): Alexandra D. Syphard, Heather Rustigian-Romsos, Jon E. Keeley
Year Published:

The advancement of three-dimensional, time-dependent fire behaviour models is best supported by publicly available, co-located, synchronised, quality-assured measures of pre-fire, active fire and post-fire conditions (i.e. integrated datasets).…
Author(s): Derek McNamara, William E. Mell
Year Published:

Great Basin shrublands in the United States are rapidly converting to annual grass- dominated ecosystems, driven primarily by increased wildfire activity. Post-fire vegetation recovery trajectories vary spatially and temporally and are influenced by…
Author(s): Jody Vogeler, Eric Jensen, Beth A. Newingham
Year Published:

Ventenata (Ventenata dubia L.) is an invasive annual grass that has rapidly expanded its range across temperate grassland and shrub-steppe ecosystems in western North America. However, there is little published regarding its ecology, especially its…
Author(s): Luke W. Ridder, JoAnna M. Perren, Lesley R. Morris, Bryan A. Endress, Robert V. Taylor, Bridgett J. Naylor
Year Published:

Wildfire is a growing global concern for rural and urban areas [1]. Statistics show that the intensity and negative consequences of wildfire have increased in recent decades creating serious challenges for fire and emergency services, as well as…
Author(s): Xilei Zhao, Ruggiero Lovreglio, Erica D. Kuligowski, Daniel Nilsson
Year Published:

Wildfire emissions affect downwind air quality and human health. Predictions of these impacts using models are limited by uncertainties in emissions and chemical evolution of smoke plumes. Using high-time-resolution aircraft measurements, we…
Author(s): Brett B. Palm, Qiaoyun Peng, Samuel R. Hall, Kirk Ullmann, Teresa L. Campos, Andrew J. Weinheimer, Denise D. Montzka, Geoffrey S. Tyndall, Wade Permar, Lu Hu, Frank Flocke, Emily V. Fischer, Joel A. Thornton
Year Published:

The increasing number of wildfires in southern Europe is making our ecosystem more vulnerable to water erosion; i.e., the loss of vegetation and subsequent runoff increase cause a shift in large quantities of sediment. Fire severity has been…
Author(s): Ilenia Argentiero, Giovanni Francesco Ricci, Mario Elia, Marina D'Este, Vincenzo Giannico, Francisco Vito Ronco, Francesco Gentile, Giovanni Sanesi
Year Published:

The wildland firefighter exposure and health effect (WFFEHE) study was a 2-year repeated-measures study to investigate occupational exposures and acute and subacute health effects among wildland firefighters. This manuscript describes the study…
Author(s): Kathleen M. Navarro, Corey Butler, Kenneth Fent, Christine Toennis, Deborah Sammons, Alejandra Ramirez-Cardenas, Kathleen A. Clark, David C. Byrne, Pamela S. Graydon, Christa Hale, Andrea F. Wilkinson, Denise L. Smith, Marissa C. Alexander-Scott, Lynne E. Pinkerton, Judith Eisenberg, Joseph W. Domitrovich
Year Published:

Subalpine forests that historically burned every 100–300 yr are expected to burn more frequently as climate warms, perhaps before trees reach reproductive maturity or produce a serotinous seedbank. Tree regeneration after short‐interval (<30‐yr)…
Author(s): Nathan S. Gill, Tyler J. Hoecker, Monica G. Turner
Year Published:

This work provides a detailed overview of existing investigations into the fire–wind interaction phenomena. Specifically, it considers: the fanning effect of wind, wind direction and slope angle, and the impact of wind on fire modelling, and the…
Author(s): Maryam Ghodrat, Farshad Shakeriaski, David James Nelson, Albert Simeoni
Year Published:

The public health emergency associated with the 2019–20 bushfires in Australia was a wake-up call to increase the resilience of our health systems to respond to climate extremes. We must combine our understanding of predictions of extreme weather…
Author(s): Aparna Lal, Mahomed Patel, Arnagretta Hunter, Christine Phillips
Year Published: