A remote-sensing assessment of oak forest recovery after postfire restoration DOI Creative Commons
Luís Filipe Lopes, Filipe S. Dias, Paulo M. Fernandes

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: April 14, 2023

Abstract Background: Mediterranean Europe is witnessing an increase in extreme wildfire events, which has led to increasing socioeconomic and ecological impacts. Postfire restoration emerges as important tool for impact mitigation ecosystem recovery. However, there a large knowledge gap on the effects of such interventions. We used remote sensing assess impacts postfire recovery deciduous oak forests Portugal, based total 3013 sampling points areas with without intervention. quantified vegetation index NDVI proxy forest period 4 years after fire, fire events that occurred 2016 2017. Temporal changes were modelled Generalized Additive Mixed Model (GAMM), function restoration, characteristics (burn severity, number fires, time since fire), topography (aspect, elevation, slope) drought (PDSI). Results: The fitted model accounted 26.4% variance. showed significant positive effect over time, although minor effect; it also negative severe wetness Regarding characteristics, low high burn severities recovery, while moderate severity levels null effect. Number fires increasingly until maximum 6 fires. Conclusions: Oak was positively affected by this small likely limited lack available data. On contrary, negatively increased but its relation varied thresholds Our study highlights importance monitoring order improve management species adaptation. This becomes even more relevant under forecasted scenarios frequency interacting other climate-driven disturbances, will further capacity future.

Language: Английский

Wildfires in Europe: Burned soils require attention DOI Creative Commons
Diana Vieira, Pasquale Borrelli, Dina Jahanianfard

et al.

Environmental Research, Journal Year: 2022, Volume and Issue: 217, P. 114936 - 114936

Published: Nov. 25, 2022

Annually, millions of hectares land are affected by wildfires worldwide, disrupting ecosystems functioning affecting on-site vegetation, soil, and above- belowground biodiversity, but also triggering erosive off-site impacts such as water-bodies contamination or mudflows. Here, we present a soil erosion assessment following the 2017's at European scale, including an analysis vegetation recovery mitigation potential. Results indicate sharp increase in losses with 19.4 million Mg additional first post-fire year when compared to unburned conditions. Over five years, 44 were estimated, 46% burned area presented no signs full recovery. Post-fire could attenuate these 63–77%, reducing background levels 4th year. Our insights may help identifying target policies reduce degradation, identified Union Soil, Forest, Biodiversity strategies.

Language: Английский

Citations

44
How much does it cost to mitigate soil erosion after wildfires? DOI Creative Commons
Antonio Girona‐García, Carola Cretella, Cristina Fernández

et al.

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 334, P. 117478 - 117478

Published: Feb. 14, 2023

Wildfires usually increase the hydrological and erosive response of forest areas, carrying high environmental, human, cultural, financial on- off-site effects. Post-fire soil erosion control measures have been proven effective at mitigating such responses, especially slope scale, but there is a knowledge gap as to how cost-effective these treatments are. In this work, we review effectiveness post-fire mitigation reducing rates over first year provide their application costs. This allowed assessing treatments' cost-effectiveness (CE), expressed cost preventing 1 Mg loss. assessment involved total 63 field study cases, extracted from 26 publications USA, Spain, Portugal, Canada, focused on role treatment types materials, countries. Treatments providing protective ground cover showed best median CE (895 $ Mg-1), agricultural straw mulch (309 followed by wood-residue (940 Mg-1) hydromulch (2332 Mg-1). Barriers relatively low (1386 due reduced elevated implementation Seeding good (260 reflected its costs rather than reduce erosion. The present results confirmed that are long they applied in areas where exceed tolerable rate thresholds (>1 Mg-1 ha-1 y-1) less costly loss values targeted protect. For reason, proper risk vital ensure available financial, human material resources appropriately.

Language: Английский

Citations

24
Fostering Post-Fire Research Towards a More Balanced Wildfire Science Agenda to Navigate Global Environmental Change DOI Creative Commons
João Gonçalves, Ana Paula Portela, Adrián Regos

et al.

Fire, Journal Year: 2025, Volume and Issue: 8(2), P. 51 - 51

Published: Jan. 26, 2025

As wildfires become more frequent and severe in the face of global environmental change, it becomes crucial not only to assess, prevent, suppress them but also manage aftermath effectively. Given temporal interconnections between these issues, we explored concept “wildfire science loop”—a framework categorizing wildfire research into three stages: “before”, “during”, “after” wildfires. Based on this partition, performed a systematic review by linking particular topics keywords each stage, aiming describe one quantify volume published research. The results from our identified substantial imbalance landscape, with post-fire stage being markedly underrepresented. Research focusing is 1.5 times (or 46%) less prevalent than that “before” 1.8 77%) “during” stage. This discrepancy likely driven historical emphasis prevention suppression due immediate societal needs. Aiming address overcome imbalance, present perspectives regarding strategic agenda enhance understanding processes outcomes, emphasizing socioecological impacts management recovery multi-level transdisciplinary approach. These proposals advocate integrating knowledge-driven burn severity ecosystem mitigation/recovery practical, application-driven strategies policy development. supports comprehensive spans short-term emergency responses long-term adaptive management, ensuring landscapes are better understood, managed, restored. We emphasize critical importance “after-fire” breaking negative planning cycles, enhancing practices, implementing nature-based solutions vision “building back better”. Strengthening balanced focused will ability close loop involved improve alignment international agendas such as UN’s Decade Ecosystem Restoration EU’s Nature Law. By addressing can significantly restore ecosystems, resilience, develop suited challenges rapidly changing world.

Language: Английский

Citations

1
Exploring Forest Fire Dynamics: Fire Danger Mapping in Antalya Region, Türkiye DOI Creative Commons
Hatice Tuba Atalay, Adalet Dervisoglu, F. Sunar

et al.

ISPRS International Journal of Geo-Information, Journal Year: 2024, Volume and Issue: 13(3), P. 74 - 74

Published: Feb. 28, 2024

The Mediterranean region experiences the annual destruction of thousands hectares due to climatic conditions. This study examines forest fires in Türkiye’s Antalya region, a high-risk area, from 2000 2023, analyzing 26 that each damaged over 50 hectares. Fire danger maps created fire weather indexes (FWI) indicated 85.7% analyzed areas were categorized within high very extreme categories. evaluated EFFIS FWI and ERA5 FWI, both derived meteorological satellite data, for 14 between 2019 2023. With its better spatial resolution, it was found had higher correlation (0.98) with situ FWIs. Since FWIs are calculated temperature moisture subcomponents, correlations satellite-based (MODIS Land Surface Temperature—LST) soil (SMAP) data investigated. demonstrated positive 0.96 MODIS LST, 0.92 0.93 FWI. negative all SMAP highlighted strong relationship, highest observed (−0.93) −0.90 −0.87 respectively.

Language: Английский

Citations

3
A remote sensing assessment of oak forest recovery after postfire restoration DOI Creative Commons
Luís Filipe Lopes, Filipe S. Dias, Paulo M. Fernandes

et al.

European Journal of Forest Research, Journal Year: 2024, Volume and Issue: 143(3), P. 1001 - 1014

Published: March 8, 2024

Abstract Mediterranean Europe is experiencing a rise in severe wildfires, resulting growing socioeconomic and ecological impacts. Postfire restoration has become crucial approach to mitigate these impacts promote ecosystem recovery. However, the effects of such interventions are still not well understood. We employed remote sensing techniques evaluate impact postfire emergency stabilization on recovery deciduous oak forests Portugal. Our study encompassed 3013 sampling points located areas with without interventions. chose Normalized Difference Vegetation Index (NDVI) as an indicator forest over four-year period following wildfires that took place 2016 2017. used Generalized Additive Mixed Model (GAMM) assess how NDVI changed time function restoration, fire characteristics, topography, drought events. found had significant positive effect time, although this was small. Severe recurrence up six fires negative NDVI. Conversely, wetness either low or high burn severities emphasizes importance monitoring guide planning improve management burned areas. This becomes even more relevant under increased wildfire severity predicted for region interacting other climate-driven disturbances, which will further negatively affect

Language: Английский

Citations

3
And it burns, burns, burns, the ring-of-fire: Reviewing and harmonizing terminology on wildfire management and policy DOI Creative Commons

Gabriela Huidobro,

Lukas Gießen, Sarah Lilian Burns

et al.

Environmental Science & Policy, Journal Year: 2024, Volume and Issue: 157, P. 103776 - 103776

Published: May 14, 2024

In recent decades, extreme wildfire seasons worldwide have disrupted coupled human and natural systems owing to both changing climatic conditions inadequate land fire management policies. Given that wildfires are expected become more frequent, the number of relevant scientific studies has also boomed in years. Simultaneously, shifts approaches resulted development new policies vice versa. Originating from diverse fields, terminology used research policy communities is far consistent, which hinders science-based, up-to-date engagement between researchers policymakers. Hence, this study aims harmonize on key concepts establish a typology for systematically classifying all actions observed literature. We conducted scoping literature review developed cyclical analytical framework, called ring-of-fire, drawing conceptions public policy, respectively. Consequently, we propose criteria establishing common dialogue actors by providing system presenting reference definitions. Furthermore, present results geographical regions regarding discuss use "fire suppression" concept given its ambiguity. This highlights importance consistent interpreting differences types. hope removing linguistic uncertainty management-related will result rigorous terms among scientists while clarifying their communication scientists, policymakers, broader public.

Language: Английский

Citations

3
Assessment of vegetation regrowth and spatial patterns and severity factors of wildfires in wildland-urban interface - the case of the large wildfire in Baião (2019) DOI Creative Commons
Sarah Moura Batista dos Santos, António Bento‐Gonçalves, António Vieira

et al.

Cadernos de Geografia, Journal Year: 2023, Volume and Issue: 47, P. 21 - 34

Published: July 11, 2023

Portugal is one of the countries most affected by forest fires in southern Europe, with recurrent events and frequent impacts. The demographic social changes that have occurred rural areas driven land neglect recent years, which, turn, influences management wildland-urban interface (WUI) are related to fires. Therefore, it aim this study develop a case municipality Baião, based on large wildfire (LWF) 2019, defining mapping WUI areas, as well evaluate, recurrence, GIF severity period 2 regeneration vegetation, different uses severities. was organized into 4 stages, being first proceeded fire occurrences, second interfaces, third characterization recurrence fires, fourth corresponded evaluation 2019 vegetation regeneration, function use. represent 26.7% territory during years 2001 2021 registered 3 770 occurrences. LWF Baião burned an area corresponding 853 ha, presented maximum number 12 between 1975 resulting degree 11 recurrences for same area. We can verify after LWF, occupied scrub classes, which were hit high severity, already showed significant levels regeneration. With this, main conclusions consider studies line contribute understanding patterns created landscapes, information valuable managers understand consequences (beneficial or not) plan actions prevention, restoration, environmental education.

Language: Английский

Citations

4
Grandes Incêndios Florestais no noroeste de Portugal: Explorando padrões espaciais entre 2001 e 2020, com base em dados Landsat DOI Creative Commons
Sarah Moura Batista dos Santos, António Bento‐Gonçalves, António Vieira

et al.

Sociedade & natureza, Journal Year: 2023, Volume and Issue: 35(1)

Published: Aug. 29, 2023

Nas últimas décadas temos assistido à ocorrência, em várias partes do mundo e sob condições meteorológicas extremas, de inúmeros incêndios florestais grandes dimensões. Esta realidade também se tem verificado, Portugal, queimando milhares hectares floresta, destruindo infraestruturas provocando a lamentável perda vidas humanas. Diante deste panorama que vem agravando, procedemos cartografia dos (GIFs) no noroeste português (superiores 100 hectares), período 2001 2020, partir da análise das imagens Landsat com recurso ferramentas Machine Learning o algoritmo Random Forest, ambiente trabalho Google Earth Engine. Com base nos resultados obtidos procura-se compreender contexto GIF bem como analisar sua repartição espacial evolução temporal –referido. Conclui-se 158.741 ha arderam pelo menos uma vez 40,9% dessa área foi afetada por segunda vez. O ano 2005 registou maior valor ardida (73.025,1 ha) recorrência máxima observada, na estudo, 7 ocorrências, corresponde 6 vezes. mato é tipo vegetação, nas NUTs Ave, Alto Minho Tâmega Sousa, apresenta mais GIFs, enquanto Cávado, são as florestas apresentam percorridas GIFs extensa. Assim, 15 anos, proporção vegetação ao mato, sendo que, apenas 5, desses foram classe ardida. No atual mudanças globais os aumentar frequência, extensão intensidade, crucial seu estudo compreensão espacial, quer escala regional, nacional.

Citations

1
Large wildfires in Northwest Portugal: Exploring spatial patterns between 2001 and 2020, based on Landsat data DOI Creative Commons
Sarah Moura Batista dos Santos, António Bento‐Gonçalves, António Vieira

et al.

Sociedade & natureza, Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 29, 2023

In recent decades, in several parts of the world and under extreme weather conditions, we have witnessed occurrence numerous large-scale wildfires. This reality has also occurred Portugal, burning thousands hectares forest, destroying infrastructures, causing regrettable loss human lives. view this worsening panorama, proceeded to cartography lLarge Forest Fires (LFF) northwestern Portugal (larger than 100 hectares), period from 2001 2020, analysis Landsat images using Machine Learning tools Random algorithm, Google Earth Engine work environment. Based on results obtained, an attempt is made understand LFF context as well analyse its spatial distribution temporal evolution analysis. The conclusion that about 158.741 ha burnt at least once 40.9% area was affected by a second time. year 2005 recorded highest value (73,025.1 ha). And maximum recurrence observed, study area, 7 occurrences, with 6 times. brush type vegetation, NUTS Ave, Alto Minho Tâmega Sousa, which presents more LFF, while Cávado, it forests present most extensive covered LFF. Thus, 15 years for significant proportion vegetation corresponds brush, being only 5 years, were class larger area. current global changes large forest fires increasing frequency, extent intensity, understanding are crucial, both regional national scales.

Language: Английский

Citations

1
A remote-sensing assessment of oak forest recovery after postfire restoration DOI Creative Commons
Luís Filipe Lopes, Filipe S. Dias, Paulo M. Fernandes

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: April 14, 2023

Abstract Background: Mediterranean Europe is witnessing an increase in extreme wildfire events, which has led to increasing socioeconomic and ecological impacts. Postfire restoration emerges as important tool for impact mitigation ecosystem recovery. However, there a large knowledge gap on the effects of such interventions. We used remote sensing assess impacts postfire recovery deciduous oak forests Portugal, based total 3013 sampling points areas with without intervention. quantified vegetation index NDVI proxy forest period 4 years after fire, fire events that occurred 2016 2017. Temporal changes were modelled Generalized Additive Mixed Model (GAMM), function restoration, characteristics (burn severity, number fires, time since fire), topography (aspect, elevation, slope) drought (PDSI). Results: The fitted model accounted 26.4% variance. showed significant positive effect over time, although minor effect; it also negative severe wetness Regarding characteristics, low high burn severities recovery, while moderate severity levels null effect. Number fires increasingly until maximum 6 fires. Conclusions: Oak was positively affected by this small likely limited lack available data. On contrary, negatively increased but its relation varied thresholds Our study highlights importance monitoring order improve management species adaptation. This becomes even more relevant under forecasted scenarios frequency interacting other climate-driven disturbances, will further capacity future.

Language: Английский

Citations

0