Fire EcologyPub Date : 2024-07-24DOI: 10.1186/s42408-024-00292-w
David Salesa, M. Jaime Baeza, Victor M. Santana
{"title":"Fire severity and prolonged drought do not interact to reduce plant regeneration capacity but alter community composition in a Mediterranean shrubland","authors":"David Salesa, M. Jaime Baeza, Victor M. Santana","doi":"10.1186/s42408-024-00292-w","DOIUrl":"https://doi.org/10.1186/s42408-024-00292-w","url":null,"abstract":"Disturbance-regime shifts are often a manifestation related to climate change. In Mediterranean ecosystems, summer-drought lengthening and high fire-severity may be among the most detrimental processes for plant recovery capacity. However, although isolated effects have been usually assessed, the effects when both disturbances interact are less known. This paper examined the possible interactive impacts of increased fire severity and summer-drought lengthening on Mediterranean vegetation recovery. Our initial hypothesis maintained that both disturbances would interact and cause greater recovery damage than in an isolated way. For this reason, we performed an experimental fire in summer by creating two fire severity levels: control fire severity (CSev) and increased fire severity by adding dry biomass (IncrSev). Following fire, and using rainfall exclusions roofs, we extended summer drought conditions toward the first autumn after fire (AutExcl treatment) and toward the first post-fire spring (SprExcl). All the treatment-levels combinations were replicated in five 0.5 × 0.5 m plots. Emerged seedlings were not affected by treatments, but plant establishment was significantly impaired by extended droughts at the end of the first post-fire year, particularly for Cistaceae and subshrubs. Nevertheless, we found no effects of increased fire severity on either isolation or combination with drought. Notwithstanding, the combination of some treatment levels brought about changes in plant composition. These changes were driven mainly by the detrimental effects of treatments on perennial forbs. This functional group was affected by treatments, which suggests that they may be more sensitive to changes in fire severity and severe droughts. Increased fire severity might not affect plant recovery either by itself or by interacting with drought because prolonged drought may mask increased fire severity impact on Mediterranean seeding species. However, fire-severity increases, together with sporadic drought events in the early stages of these communities, could imply long-lasting changes in community composition due to distinct functional-groups sensitivities. Nevertheless, these impacts depend on the considered species or functional group. These findings provide information about the impacts that Mediterranean-shrublands ecosystems might face if the trends of fire and drought regimes continue shifting.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"20 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-07-22DOI: 10.1186/s42408-024-00290-y
Christine Eriksen
{"title":"Coexisting with wildfire: strengthening collective capacity by changing the status quo","authors":"Christine Eriksen","doi":"10.1186/s42408-024-00290-y","DOIUrl":"https://doi.org/10.1186/s42408-024-00290-y","url":null,"abstract":"This article is the fuller written version of the invited closing plenary given by the author at the 10th International Fire Ecology and Management Congress. The article provides a consideration of our capacity to cope, care, and coexist in a fiery world from a social and structural point of view. It focuses on privilege as the root cause of a long and troublesome history within the wildfire profession of not valuing all generational knowledge equally, not treating all cultures with the same respect, not embracing diversity and inclusion, and not affording the same status to all disciplines and voices. The article argues that we can strengthen our collective capacity to coexist with wildfire by embracing local and indigenous fire stewardship practices, by enabling workforce diversity and inclusive leadership culture, and by providing sustainable working conditions for wildland firefighters. To do so requires individual and collective noticing of what is wrong, and everyday action steps towards equity.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"253 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-07-22DOI: 10.1186/s42408-024-00300-z
Carolyn F. van Mantgem
{"title":"3D imaging as a method of measuring serotiny","authors":"Carolyn F. van Mantgem","doi":"10.1186/s42408-024-00300-z","DOIUrl":"https://doi.org/10.1186/s42408-024-00300-z","url":null,"abstract":"Serotiny, or pyriscence, refers to delayed seed dissemination within plants and plays an important role in the population dynamics of species following fire. Accurately understanding the variation in serotiny is crucial to predicting ecosystem responses to changing fire regimes. Three-dimensional (3D) cone surface area is one critical trait that can be used to characterize responses in serotinous species following fire, yet approaches to accurately measure cone surface area are limited. Cone surface area in regards to this paper is the total area of all surfaces of the cone. Past studies have relied on visual estimation to determine the openness of cones or to identify when cones become open. Subjective assessments of cone opening may be insufficient to adequately characterize cone responses to fire. In this study, I demonstrate the effectiveness of 3D modeling using a readily available phone camera and applications (Polycam, Blender) to quantify differences in 3D surface area of cones before and after heating treatments by comparing two serotinous conifer species, Monterey cypress (Hesperocyparis macrocarpa) and bishop pine (Pinus muricata). Bishop pine had an average cone surface area increase of 175.7% while Monterey cypress had an average cone surface area increase of 43.5%. Paired t-tests showed that cone surface area significantly increased following heating for both species. Bishop pine showed a much greater cone surface area change relative to Monterey cypress. 3D imaging with the phone application, Polycam, proved to be a successful method of quantifying cone opening, creating a mesh that could be measured with the post-image processing software, Blender. A mesh can be defined as a digital 3D representation of an object made up of connected vertices that create edges and faces. Using a readily available phone camera, one can create an accurate 3D model to measure changes in the surface area of cones before and after fire. Simple methods for quantifying serotiny, such as demonstrated here, allow for improved understanding and predictions of how species respond to fire and other environmental triggers but require further investigation including, but not limited to, comparisons between serotinous species, facultative serotinous species, and non-serotinous species.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"28 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-07-04DOI: 10.1186/s42408-024-00287-7
Di Lin, Vincenzo Giannico, Raffaele Lafortezza, Giovanni Sanesi, Mario Elia
{"title":"Use of airborne LiDAR to predict fine dead fuel load in Mediterranean forest stands of Southern Europe","authors":"Di Lin, Vincenzo Giannico, Raffaele Lafortezza, Giovanni Sanesi, Mario Elia","doi":"10.1186/s42408-024-00287-7","DOIUrl":"https://doi.org/10.1186/s42408-024-00287-7","url":null,"abstract":"Mediterranean forests are increasingly threatened by wildfires, with fuel load playing a crucial role in fire dynamics and behaviors. Accurate fuel load determination contributes substantially to the wildfire monitoring, management, and prevention. This study aimed to evaluate the effectiveness of airborne Light Detection and Ranging (LiDAR) data in estimating fine dead fuel load, focusing on the development of models using LiDAR-derived metrics to predict various categories of fine dead fuel load. The estimation of fine dead fuel load was performed by the integration of field data and airborne LiDAR data by applying multiple linear regression analysis. Model performance was evaluated by the coefficient of determination (R2), root mean squared error (RMSE), and mean absolute error (MAE). Through multiple linear regression models, the study explored the relationship between LiDAR-derived height and canopy cover metrics and different types of fine dead fuel load (1-h, 10-h, 100-h fuel loads, and litter). The accuracy of these models varied, with litter prediction showing the highest accuracy (R2 = 0.569, nRMSE = 0.158). In contrast, the 1-h fuel load prediction was the least accurate (R2 = 0.521, nRMSE = 0.168). The analysis highlighted the significance of specific LiDAR metrics in predicting different fuel loads, revealing a strong correlation between the vertical structure of vegetation and the accumulation of fine dead fuels. The findings demonstrate the potential of airborne LiDAR data in accurately estimating fine dead fuel loads in Mediterranean forests. This capability is significant for enhancing wildfire management, including risk assessment and mitigation. The study underscores the relevance of LiDAR in environmental monitoring and forest management, particularly in regions prone to wildfires.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"31 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-06-25DOI: 10.1186/s42408-024-00289-5
Fahad Shahzad, Kaleem Mehmood, Khadim Hussain, Ijlal Haidar, Shoaib Ahmad Anees, Sultan Muhammad, Jamshid Ali, Muhammad Adnan, Zhichao Wang, Zhongke Feng
{"title":"Comparing machine learning algorithms to predict vegetation fire detections in Pakistan","authors":"Fahad Shahzad, Kaleem Mehmood, Khadim Hussain, Ijlal Haidar, Shoaib Ahmad Anees, Sultan Muhammad, Jamshid Ali, Muhammad Adnan, Zhichao Wang, Zhongke Feng","doi":"10.1186/s42408-024-00289-5","DOIUrl":"https://doi.org/10.1186/s42408-024-00289-5","url":null,"abstract":"Vegetation fires have major impacts on the ecosystem and present a significant threat to human life. Vegetation fires consists of forest fires, cropland fires, and other vegetation fires in this study. Currently, there is a limited amount of research on the long-term prediction of vegetation fires in Pakistan. The exact effect of every factor on the frequency of vegetation fires remains unclear when using standard analysis. This research utilized the high proficiency of machine learning algorithms to combine data from several sources, including the MODIS Global Fire Atlas dataset, topographic, climatic conditions, and different vegetation types acquired between 2001 and 2022. We tested many algorithms and ultimately chose four models for formal data processing. Their selection was based on their performance metrics, such as accuracy, computational efficiency, and preliminary test results. The model’s logistic regression, a random forest, a support vector machine, and an eXtreme Gradient Boosting were used to identify and select the nine key factors of forest and cropland fires and, in the case of other vegetation, seven key factors that cause a fire in Pakistan. The findings indicated that the vegetation fire prediction models achieved prediction accuracies ranging from 78.7 to 87.5% for forest fires, 70.4 to 84.0% for cropland fires, and 66.6 to 83.1% for other vegetation. Additionally, the area under the curve (AUC) values ranged from 83.6 to 93.4% in forest fires, 72.6 to 90.6% in cropland fires, and 74.2 to 90.7% in other vegetation. The random forest model had the highest accuracy rate of 87.5% in forest fires, 84.0% in cropland fires, and 83.1% in other vegetation and also the highest AUC value of 93.4% in forest fires, 90.6% in cropland fires, and 90.7% in other vegetation, proving to be the most optimal performance model. The models provided predictive insights into specific conditions and regional susceptibilities to fire occurrences, adding significant value beyond the initial MODIS detection data. The maps generated to analyze Pakistan’s vegetation fire risk showed the geographical distribution of areas with high, moderate, and low vegetation fire risks, highlighting predictive risk assessments rather than historical fire detections.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"38 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-06-24DOI: 10.1186/s42408-024-00285-9
Margaret D. Epstein, Carl A. Seielstad, Christopher J. Moran
{"title":"Impact and recovery of forest cover following wildfire in the Northern Rocky Mountains of the United States","authors":"Margaret D. Epstein, Carl A. Seielstad, Christopher J. Moran","doi":"10.1186/s42408-024-00285-9","DOIUrl":"https://doi.org/10.1186/s42408-024-00285-9","url":null,"abstract":"Anthropogenic climate change is expected to catalyze forest conversion to grass and shrublands due to more extreme fire behavior and hotter and drier post-fire conditions. However, field surveys in the Northern Rocky Mountains of the United States show robust conifer regeneration on burned sites. This study utilizes a machine learning (GBM) approach to monitor canopy cover systematically on a census of burned areas in two large wilderness areas from 1985 to 2021, to contextualize these recent field surveys and create a monitoring baseline for future change. A predictive model was developed from coincident LiDAR and Landsat observations and used to create time series of canopy cover on 352 burned sites (individual wildfires subset by number of times burned), which were then summarized using fire impact and recovery metrics. Fire impact, defined as canopy cover loss relative to pre-fire condition, was highly correlated with burn severity (Spearman’s R = 0.70). Recovery was characterized by the following: (1) whether a burned area began gaining canopy cover and (2) how long would it take to reach pre-fire cover given observed rates of gain. Eighty-five percent of the land area studied showed evidence of recovery. Areas that are failing to recover are burning more recently than their recovering counterparts, with 60% of non-recovering sites burning for the first time after 2003. However, the 5-year probability of recovery is similar among recent burns and for those that burned earlier in the record, suggesting that they may recover with more time. Once sites begin recovering, median time to reach pre-fire cover is 40 years. Seven sites have expected recovery times greater than 200 years, six of which burned for the first time after 2006. Overall, burned sites in wilderness areas of the Northern Rocky Mountains are broadly recovering from wildfire. However, anthropogenic climate change adds a layer of uncertainty to the future prognosis of conifer recovery. This work provides a framework for systematic monitoring into the future and establishes a baseline of impact and recovery in the mountains of western Montana and northern Idaho.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"55 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-06-24DOI: 10.1186/s42408-024-00286-8
Norma L. Fowler, Rebecca E. Carden
{"title":"Roles of fire in the plant communities of the eastern Edwards Plateau of Texas","authors":"Norma L. Fowler, Rebecca E. Carden","doi":"10.1186/s42408-024-00286-8","DOIUrl":"https://doi.org/10.1186/s42408-024-00286-8","url":null,"abstract":"The eastern Edwards Plateau supports a mosaic of woodlands, savannas, and shrubland in which native plant and animal species are often still dominant. Some woodlands are dominated by a mix of native woody species, including Ashe juniper (Juniperus ashei), oak species (Quercus spp.), and other hardwoods. Other woodlands are nearly pure Ashe juniper; these are particularly susceptible to crown fires. The savannas were once, and still can be, maintained by surface fires. We hypothesize that frequent surface fires once kept some of the mixed woodlands more open and more diverse (a “lost community”) and that these fires would have reduced the abundance of Ashe juniper, which does not resprout from the base, and allowed oak regeneration, which is currently failing. The absence of fire, the current failure of oak regeneration, and high white-tailed deer densities together favor the “juniperization” of woodlands, that is, the conversion of mixed woodlands into nearly pure stands of Ashe juniper. Surface fires in savannas can sometimes control woody encroachment and the non-native grass King Ranch bluestem (Bothriochloa ischaemum), although the particular fire characteristics required are not yet clear. The current lack of fire in savannas favors their conversion to woodlands. Since under present conditions Ashe juniper is the primary encroacher, without fire or mechanical clearing these savannas are also on trajectories towards nearly pure stands of Ashe juniper. Prescribed fire, sometimes paired with mechanical thinning, offers land managers in this region a tool for achieving many goals, including increasing native biodiversity and reducing wildfire danger. However, more study of the effects of fires of different intensities and frequencies in these woodlands, savannas, and shrublands is needed to better inform the use of prescribed fire in this region.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"12 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141504422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-05-29DOI: 10.1186/s42408-024-00284-w
Gavin M. Jones, Marion A. Clément, Christopher E. Latimer, Marilyn E. Wright, Jamie S. Sanderlin, Shaula J. Hedwall, Rebecca Kirby
{"title":"Correction: Frequent burning and limited stand‑replacing fire supports Mexican spotted owl pair occupancy","authors":"Gavin M. Jones, Marion A. Clément, Christopher E. Latimer, Marilyn E. Wright, Jamie S. Sanderlin, Shaula J. Hedwall, Rebecca Kirby","doi":"10.1186/s42408-024-00284-w","DOIUrl":"https://doi.org/10.1186/s42408-024-00284-w","url":null,"abstract":"<p><b>Correction</b><b>: </b><b>Fire Ecol 20, 37 (2024)</b></p><p><b>https://doi.org/10.1186/s42408-024-00271-1</b></p><br/><p>In this article (Jones et al. 2024) the Data availability statement was missing and should have read: The data analyzed in the current study are not publicly available because of the sensitive nature of disclosing the locations of threatened and endangered species but are available from the corresponding author on reasonable request.</p><p>The original article (Jones et al. 2024) has been updated.</p><ul data-track-component=\"outbound reference\"><li><p>Jones, G.M., M.A. Clément, C.E. Latimer, et al. 2024. Frequent burning and limited stand-replacing fire supports Mexican spotted owl pair occupancy. <i>fire ecol</i> 20: 37. https://doi.org/10.1186/s42408-024-00271-1.</p><p>Article Google Scholar </p></li></ul><p>Download references<svg aria-hidden=\"true\" focusable=\"false\" height=\"16\" role=\"img\" width=\"16\"><use xlink:href=\"#icon-eds-i-download-medium\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"></use></svg></p><h3>Authors and Affiliations</h3><ol><li><p>USDA Forest Service, Rocky Mountain Research Station, Albuquerque, NM, USA</p><p>Gavin M. Jones & Marilyn E. Wright</p></li><li><p>Bird Conservancy of the Rockies, Fort Collins, CO, USA</p><p>Marion A. Clément & Christopher E. Latimer</p></li><li><p>USDA Forest Service, Rocky Mountain Research Station, Flagstaff, AZ, USA</p><p>Jamie S. Sanderlin</p></li><li><p>US Fish and Wildlife Service, Arizona Fish & Wildlife Conservation Office, Flagstaff, AZ, USA</p><p>Shaula J. Hedwall</p></li><li><p>USDA Forest Service, Southwestern Region, Albuquerque, NM, USA</p><p>Rebecca Kirby</p></li></ol><span>Authors</span><ol><li><span>Gavin M. Jones</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Marion A. Clément</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Christopher E. Latimer</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Marilyn E. Wright</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Jamie S. Sanderlin</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Shaula J. Hedwall</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li><li><span>Rebecca Kirby</span>View author publications<p>You can also search for this author in <span>PubMed<span> </span>Google Scholar</span></p></li></ol><h3>Corresponding author</h3><p>Correspondence to Gavin M. Jones.</p><p><b>Open Access</b> This article is licensed under a Creative Commons Attribution 4.0 International License, whic","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"25 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-05-13DOI: 10.1186/s42408-024-00276-w
David Beltrán-Marcos, Susana Suárez-Seoane, José Manuel Fernández-Guisuraga, João C. Azevedo, Leonor Calvo
{"title":"Fire regime attributes shape pre-fire vegetation characteristics controlling extreme fire behavior under different bioregions in Spain","authors":"David Beltrán-Marcos, Susana Suárez-Seoane, José Manuel Fernández-Guisuraga, João C. Azevedo, Leonor Calvo","doi":"10.1186/s42408-024-00276-w","DOIUrl":"https://doi.org/10.1186/s42408-024-00276-w","url":null,"abstract":"Designing effective land management actions addressed to increase ecosystem resilience requires us to understand how shifting fire regimes are shaping landscapes. In this study, we aim to assess the link between fire regime and pre-fire vegetation biophysical characteristics (type, amount, and structure) in controlling extreme fire behavior across Atlantic-Transition-Mediterranean bioregions in Spain marked by different summer drought conditions and dominant plant regenerative traits. We used remote sensing metrics to estimate fire severity and pre-fire vegetation characteristics in eight study areas recently affected by large and highly severe wildfires under different environmental contexts. Furthermore, to account for fire regime attributes, we retrieved, for each target wildfire, the perimeter of the past wildfires that occurred between 1985 and 2022 and calculated fire recurrence, the time the since last fire (TSLF), and fire severity of previous wildfires (FSPW). The effect of fire regime attributes on pre-fire vegetation was examined using generalized linear mixed models (GLMMs). During the study period, fire recurrence decreased significantly in all bioregions analyzed. Fire severity increased under Atlantic conditions and decreased under Mediterranean environmental context, where the time since the last fire was the highest. Pre-fire fuel type and amount were identified as primary drivers of fire severity, being both strongly modulated by fire regime but following distinct mechanisms depending on the environmental context of each bioregion. In Atlantic sites, more frequent past wildfires of low to moderate fire severity were associated with a greater dominance of fire-prone shrublands with moderate fuel amounts, which increases the risk of severe wildfires. Similar trends occurred in Transition and Mediterranean sites but under the previous occurrence of highly severe wildfires. Specifically, long times after highly severe wildfires (> 30 years) increased fuel amount in conifer-dominated ecosystems in all bioregions analyzed, heightening susceptibility to extreme fire behavior. Our findings highlight that fire-prone ecosystems need adaptative management strategies to mitigate the effects of fire regime changes, but these actions should be specific to the climatic and ecological context.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"32 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fire EcologyPub Date : 2024-05-13DOI: 10.1186/s42408-024-00277-9
Kate M. Wilkin, Amanda M. Stasiewicz, Susan D. Kocher
{"title":"Private landowner interest in prescribed fire in California: findings from workshops in the Sierra Nevada","authors":"Kate M. Wilkin, Amanda M. Stasiewicz, Susan D. Kocher","doi":"10.1186/s42408-024-00277-9","DOIUrl":"https://doi.org/10.1186/s42408-024-00277-9","url":null,"abstract":"Globally, prescribed fire political interest and practice has been rekindled following recent devastating wildfire seasons. This phenomenon was especially acute in areas with dual wildfire and forest health crises, like California. Previous research has investigated prescribed fire on public lands or on private lands in other regions, but little is known about prescribed fire practice or interest on private lands in California. Therefore, we sought to understand private land managers’ perceptions of prescribed fire compared to other land management techniques, treatment pathways, motivations, and barriers to complete these treatments in California. Before workshops on prescribed fire for private lands, we surveyed participants in six prescribed fires on private lands workshops in the Central Sierra Nevada from 2018 to 2019 (N = 172). We found that participants “want to use” pile burns and broadcast prescribed fires more than other land management treatments. There was also a strong interest in mechanical treatments in contrast to low interest in grazing. Some participants had “heard about” and “want to use” some pathways to apply prescribed fire on their lands, including government programs, contractors, friends and family, and Prescribed Burn Associations (PBAs). People had multiple objectives for their prescribed fire goals, and the majority wanted to promote ecosystem health, e.g., reduce fire hazards, foster natural land health, and reduce invasive plants. Perceived barriers were greatest for safety, cost, and resources while fewer participants perceived permits as a barrier. Participants were in the early stages of considering using broadcast prescribed fire and would like to burn small areas, potentially to build confidence and skills. At the time of our research, there was strong interest in using prescribed fire on private lands, and some perceived best pathways and barriers to be unique from prescribed fire practice on public lands. At the same time, private lands managers who responded said they want to promote ecosystem health and reduce wildfire risk and impacts, which is a shared a common motivation with public lands managers. Studies and reports on prescribed burning need to clearly distinguish between broadcast prescribed burning and pile burning to ensure consistency in results and conclusions about prescribed fire use.","PeriodicalId":12273,"journal":{"name":"Fire Ecology","volume":"37 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}