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Ecosystem

Displaying 861 - 880 of 5949 results

Effective wildland fire management increasingly entails fostering shared stewardship of the landscape across ownership boundaries, and enacting collaborative strategies that require management responsibilities distributed among public agencies,…
Author(s): Alex W. Kirkpatrick
Year Published:

We celebrate the 50th anniversary of the Canadian Journal of Forest Research by reflecting on the considerable progress accomplished in select areas of Canadian wildland fire science over the past half century. Specifically, we discuss key…
Author(s): Sean C. P. Coogan, Lori D. Daniels, Den Boychuk, Philip J. Burton, Michael D. Flannigan, Sylvie Gauthier, Victor G. Kafka, Jane Park, B. Mike Wotton
Year Published:

Tower-mounted camera-based wildfire detection systems provide an effective means of early forest fire detection. Historically, tower sites have been identified by foresters and locals with intimate knowledge of the terrain and without the aid of…
Author(s): Andries Heyns, Warren du Plessis, Kevin M. Curtin, Michael Kosch, Gavin Hough
Year Published:

It is difficult to detect forest fires in complex backgrounds owing to the many interfering factors in forest fire smoke. In this paper, a novel method that combines Time Domain Robust Principal Component Analysis (TRPCA) and a Two-Stream Composed…
Author(s): Xiaohu Qiang, Guoxiong Zhou, Aibin Chen, Xin Zhang, Wenzhuo Zhang
Year Published:

Lightning‐caused wildfires are a significant contributor to burned areas, with lightning ignitions remaining one of the most unpredictable aspects of the fire environment. There is a clear connection between fuel moisture and the probability of…
Author(s): Ruth Coughlan, Francesca Di Giuseppe, Claudia Vitolo, Christopher Barnard, Philippe Lopez, Matthias Drusch
Year Published:

A methodology to quantify uncertainty in wildfire forecast using coupled fire-atmosphere computational models is presented. In these models, an atmospheric solver is coupled with a fire-spread module. In order to maintain a low computational cost,…
Author(s): Umberto Ciri, Martand Mayukh Garimella, Federico Bernardoni, R. L. Bennett, Stefano Leonardi
Year Published:

Wildfire is a major driver of nitrogen (N) cycling and export from terrestrial to aquatic systems. While fire is a natural process in many watersheds, it can still degrade water quality by rapidly flushing N to streams. This can be particularly…
Author(s): Rebecca N. Gustine, Erin J. Hanan, Peter R. Robichaud, William J. Elliot
Year Published:

A conceptual model based on the balance of energy in a system composed of a burning cigarette, ambient flow and a porous fuel bed is proposed to study the burning of a single cigarette and the process of fuel bed dehydration, pyrolysis and its…
Author(s): Domingos Xavier Viegas, Ricardo Oliveira, Miguel Almeida, Donghyun Kim
Year Published:

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…
Author(s): Bruce A. Roundy, Jeanne C. Chambers
Year Published:

Grazing and fire are both independently important drivers of plant community dynamics; however, their interactive effects may be even more influential. Little is known about prefire grazing effects on postfire plant community dynamics. We…
Author(s): Kirk W. Davies, Jonathan D. Bates, Chad S. Boyd, Rory O'Connor, Stella M. Copeland
Year Published:

Anthropogenic climate change is expected to cause an increase in fire danger over south-eastern Australia during the 21st century, primarily driven by increased surface temperature. Studies of future fire weather in Victoria, Australia, have so far…
Author(s): Scott Clark, Graham A. Mills, Timothy J. Brown, Sarah Harris, John T. Abatzoglou
Year Published:

The fire plume height (smoke injection height) is an important parameter for calculating the transport and lifetime of smoke particles, which can significantly affect regional and global air quality and atmospheric radiation budget. To develop an…
Author(s): Ziming Ke, Yuhang Wang, Yufei Zou, Yongjia Song, Yongqiang Liu
Year Published:

Improving the accuracy of fire behavior prediction requires better understanding of live fuel, the dominant component of tree crowns, which dictates the consumption and energy release of the crown fire flame-front. Live fuel flammability is not well…
Author(s): Oleg M. Melnik, Stephen A. Paskaluk, Mark Y. Ackerman, Katharine O. Melnik, Dan K. Thompson, Sara S. McAllister, Michael D. Flannigan
Year Published:

With the increasing frequency and severity of fire, there is an increasing desire to better manage fuels and minimize, as much as possible, the impacts of fire on soils and other natural resources. Piling and/or burning slash is one method of…
Author(s): William J. Massman
Year Published:

We present novel in-field vegetation fire observations and the analyses using brightness temperatures recorded by longwave infrared camera and thermal image velocimetry. The brightness temperatures from a wind-driven stubble wheat fire were obtained…
Author(s): Marwan Katurji, Jiawei Zhang, Ashley Satinsky, Hamish McNair, Benjamin Schumacher, Tara Strand, Andres Valencia, Mark A. Finney, H. Grant Pearce, Jessica Kerr, Daisuke Seto, Hugh Wallace, Peyman Zawar-Reza, Christina Dunker, Veronica R. Clifford, Katharine O. Melnik, Torben Grumstrup, Jason M. Forthofer, Craig B. Clements
Year Published:

Quantifying livelihood vulnerability to wildland fires in the United States is challenging because of the need to systematically integrate multidimensional variables into its analysis. We aim to measure wildfire threats amongst humans and their…
Author(s): Janine A. Baijnath-Rodino, Mukesh Kumar, Margarita Rivera, Khoa D. Tran, Tirtha Banerjee
Year Published:

We used a value of information approach to demonstrate the cost-effectiveness of using satellite imagery as part of the Burn Area Emergency Response (BAER), a US federal program that identifies imminent post-wildfire threats to human life and safety…
Author(s): Richard Bernknopf, Yusuke Kuwayama, Reily Gibson, Jessica Blakely, Bethany Mabee, T. J. Clifford, Brad Quayle, Justin Epting, Terry Hardy, David C. Goodrich
Year Published:

Western North American sagebrush shrublands and steppe face accelerating risks from fire-driven feedback loops that transition these ecosystems into self-reinforcing states dominated by invasive annual grasses. In response, sagebrush conservation…
Author(s): Thomas J. Rodhouse, Jeffrey Lonneker, Lisa Bowersock, Diana Popp, Jamela C. Thompson, Gordon H. Dicus, Kathryn M. Irvine
Year Published:

Computational natural wildfire simulation is a computing-intensive process. The process is also challenging because of the need to integrate data with wide spatial and temporal variability. Our study sought to simulate rapidly spreading natural…
Author(s): Bishrant Adhikari, Chen Xu, Paddington Hodza, Thomas A. Minckley
Year Published:

Despite the increasing challenges wildfires are posing around the globe, and the flourishing production of high-quality wildfire scientific knowledge, the ability of fire science to impact knowledge on the ground, for people, society, economy, and…
Author(s): Fantina Tedim, Sarah M. McCaffrey, Vittorio Leone, Carmen Vazquez-Varela, Yaella Depietri, Petra Buergelt, Raffaella Lovreglio
Year Published: