9 documents found, page 1 of 1
The effectiveness of past wildfire at limiting reburning is short-lived in a Me...
Davim, D.A.; Rossa, C.G.; Pereira, J.M.C.; Guiomar, N.; Fernandes, P.M.Background The study of wildfire interactions (i.e., spread limitation and reburns) is gaining traction as a means of describing the self-limiting process of fire spread in the landscape and has important management implications but has scarcely been attempted in Europe. We examined to what extent previously burned areas restricted the development of individual large wildfires (> 500 ha) in mainland Portugal. R...
A Planning Model for Fire-Resilient Landscapes in Portugal Is Riddled with Fall...
Guiomar, N.; Pereira, J.M.C.; Fernandes, P.M.FIRELAN was developed as a model expected to foster the resilience to fire and sustainability of a landscape that is based on a number of premises about fire behaviour. We critically review FIRELAN and find that flawed ecological concepts and terminology are used, and that six fallacies are pervasive throughout the paper, namely begging the question regarding the effectiveness of land cover changes; the appeal ...
Unraveling the Effect of Fire Seasonality on Fire-Preferred Fuel Types and Dyna...
Oliveira, E.; Fernandes, P.M.; Barros, D.; Guiomar, N.Socio-demographic changes in recent decades and fire policies centered on fire suppression have substantially diminished the ability to maintain low fuel loads at the landscape scale in marginal lands. Currently, shepherds face many barriers to the use of fire for restoring pastures in shrub-encroached communities. The restrictions imposed are based on the lack of knowledge of their impacts on the landscape. We...
The Portuguese Large Wildfire Spread database (PT-FireSprd)
Benali, A.; Guiomar, N.; Gonçalves, H.; Mota, B.; Silva, F.; Fernandes, P.M.; Mota, C.; Penha, A.; Santos, J.; Pereira, J.M.C.; Sá, A.C.L.Wildfire behaviour depends on complex interactions between fuels, topography, and weather over a wide range of scales, being important for fire research and management applications. To allow for significant progress towards better fire management, the operational and research communities require detailed open data on observed wildfire behaviour. Here, we present the Portuguese Large Wildfire Spread database (PT...
A global assemblage of regional prescribed burn records — GlobalRx
Hsu, A.; Jones, M.W.; Thurgood, J.R.; Smith, A.J.P.; Carmenta, R.; Abatzoglou, J.T.; Anderson, L.O.; Clarke, H.; Doerr, S.H.; Fernandes, P.M.Prescribed burning (RxB) is a land management tool used widely for reducing wildfire hazard, restoring biodiversity, and managing natural resources. However, RxB can only be carried out safely and effectively under certain seasonal or weather conditions. Under climate change, shifts in the frequency and timing of these weather conditions are expected but analyses of climate change impacts have been restricted t...
A method to produce a flexible and customized fuel models dataset
Sá, A.C.L.; Benali, A.; Aparicio, B.A.; Bruni, C.; Mota, C.; Pereira, J.M.C.; Fernandes, P.M.Simulation of vegetation fires very often resorts to fire-behavior models that need fuel models as input. The lack of fuel models is a common problem for researchers and fire managers because its quality depends on the quality/availability of data. In this study we present a method that combines expert- and research-based knowledge with several sources of data (e.g. satellite and fieldwork) to produce customize...
Analysing eucalypt expansion in Portugal as a fire-regime modifier
Fernandes, P.M.; Guiomar, N.; Rossa, C.G.Eucalypts, especially blue gum (Eucalyptus globulus), have been extensively planted in Portugal and nowadays dominate most of its forest landscapes. Large-scale forestation programs can intensify fire activity, and blue gum plantations are often viewed as highly flammable due to the nature and structure of the fuel complex. The role of eucalypt plantations in the fire regime of Mediterranean climate regions is ...
Improving management decisions in portuguese forests through fire behaviour mod...
Botequim, B.; Fernandes, P.M.; Borges, J.G.Understanding wildfire behavior at the landscape-level is critical to address wildfire impacts in Portuguese forest management planning. Thus, fire spread was simulated in three forested landscape to assist forest managers in identifying high-risk areas for actively integrating stand-level fuel treatments with explicit landscape-level management planning and develop fire prevention priorities. Specifically, sev...
Post-fire mortality in mixed forests of central Portugal
Catry, Filipe; Rego, Francisco Castro; Moreira, Francisco; Fernandes, P.M.; Pausas, J.G.Wildfires are a recurrent disturbance in the Mediterranean Basin. However, managers from this region are confronted with a lack of information on the effects of fire on most woody species, which is required for defining sustainable forest management strategies. Following a large wildfire in central Portugal (2003), we surveyed the area during the first year and assessed the vegetative condition of 1040 burned t...