21 documents found, page 1 of 3
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 ...
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 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...
An operational approach to high resolution agro-ecological zoning in West-Africa
Le Page, Y.; Vasconcelos, Maria; Palminha, A.; Melo, I.Q.; Pereira, J.M.C.The objective of this work is to develop a simple methodology for high resolution crop suitability analysis under current and future climate, easily applicable and useful in Least Developed Countries. The approach addresses both regional planning in the context of climate change projections and pre-emptive short-term rural extension interventions based on same-year agricultural season forecasts, while implement...
HESFIRE: a global fire model to explore the role of anthropogenic and weather d...
Le Page, Y.; Morton, D.; Bond-Lamberty, B.; Pereira, J.M.C.; Hurtt, G.Vegetation fires are a major driver of ecosystem dynamics and greenhouse gas emissions. Anticipating potential changes in fire activity and their impacts relies first on a realistic model of fire activity (e.g., fire incidence and interannual variability) and second on a model accounting for fire impacts (e.g., mortality and emissions). In this paper, we focus on our understanding of fire activity and describe ...
Ecological implications of fine-scale fire patchiness and severity in tropical ...
Oliveira, Sofia L.J.; Campagnolo, Manuel; Price, Owen F.; Edwards, Andrew C.; Russel-Smith, Jeremy; Pereira, J.M.C.Understanding fine-scale fire patchiness has significant implications for ecological processes and biodiversity conservation. It can affect local extinction of and recolonisation by relatively immobile fauna and poorly seed-dispersed flora in fire-affected areas. This study assesses fine-scale fire patchiness and severity, and associated implications for biodiversity, in north Australian tropical savanna system...
Religious affiliation modulates weekly cycles of cropland burning in Sub-Sahara...
Pereira, J.M.C.; Oom, Duarte; Pereira, Paula; Turkman, Antónia A.; Turkman, K. FeridunVegetation burning is a common land management practice in Africa, where fire is used for hunting, livestock husbandry, pest control, food gathering, cropland fertilization, and wildfire prevention. Given such strong anthropogenic control of fire, we tested the hypotheses that fire activity displays weekly cycles, and that the week day with the fewest fires depends on regionally predominant religious affiliatio...
Global analysis of radiative forcing from fire-induced shortwave albedo change
Lopéz-Saldaña, G.; Bistinas, I.; Pereira, J.M.C.Land surface albedo, a key parameter to derive Earth’s surface energy balance, is used in the parameterization of numerical weather prediction, climate monitoring and climate change impact assessments. Changes in albedo due to fire have not been fully investigated on a continental and global scale. The main goal of this study, therefore, is to quantify the changes in instantaneous shortwave albedo produced by b...
Modelling wildfire risk in pure and mixed forest stands in Portugal
Garcia-Gonzalo, Jordi; Zubizarreta-Gerendiain, Anne; Ricardo, A.; Marques, Susete; Botequim, Birgit; Borges, José Guilherme; Oliveira, Manuela M.In Portugal over 85% of the forest area is occupied by Maritime pine (Pinus pinaster), eucalypt (Eucalyptus globulus), cork oak (Quercus suber) and holm oak (Quer- cus ilex). Eucalypt plantations extend over 20% of the total forest area being the main source of raw material for the pulp and paper industry. In The main aim of the present study was to develop a planning oriented stand level model to pre- dict wil...