A5009112942- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Forest Insect Ecology and Management
- Forest ecology and management
- Landslides and related hazards
- Fire dynamics and safety research
- Flood Risk Assessment and Management
- Rangeland and Wildlife Management
- Wildlife Ecology and Conservation
- Plant Water Relations and Carbon Dynamics
- Seedling growth and survival studies
- Insect and Pesticide Research
- Agroforestry and silvopastoral systems
- Remote Sensing and LiDAR Applications
- Bat Biology and Ecology Studies
- Plant Surface Properties and Treatments
- Fire Detection and Safety Systems
- Species Distribution and Climate Change
- Plant and animal studies
- Remote Sensing in Agriculture
- Plant responses to elevated CO2
- African Botany and Ecology Studies
- Evacuation and Crowd Dynamics
- Geology and Paleoclimatology Research
- Aeolian processes and effects
University of Lisbon
2013-2024
Research Network (United States)
2023
Abstract During the last decades, climate and land use changes led to an increased prevalence of megafires in Mediterranean-type regions (MCRs). Here, we argue that current wildfire management policies MCRs are destined fail. Focused on fire suppression, these largely ignore ongoing warming landscape-scale buildup fuels. The result is a ‘firefighting trap’ contributes fuel accumulation precluding suppression under extreme weather, resulting more severe larger fires. We believe ‘business as...
Portugal has the highest density of wildfire ignitions among southern European countries. The ability to predict spatial patterns constitutes an important tool for managers, helping improve effectiveness fire prevention, detection and firefighting resources allocation. In this study, we analyzed 127 490 that occurred in during a 5-year period. We used logistic regression models likelihood ignition occurrence, using set potentially explanatory variables, produced risk map Portuguese mainland....
Abstract Background The global human footprint has fundamentally altered wildfire regimes, creating serious consequences for health, biodiversity, and climate. However, it remains difficult to project how long-term interactions among land use, management, climate change will affect fire behavior, representing a key knowledge gap sustainable management. We used expert assessment combine opinions about past future regimes from 99 researchers. asked quantitative qualitative assessments of the...
Patterns of wildfire occurrence at the landscape level were characterised during period 1990–94 in Portugal. Based on land-cover information within 5591 burned patches (larger than 5 ha) and surrounding landscape, selection ratio functions used to measure fire preference or avoidance for different types 12 regions country. Shrublands most fire-prone land cover, whereas annual crops, permanent crops agro-forestry systems avoided by fire. In terms forest types, conifer plantations more...
The Mediterranean region is projected to be extremely vulnerable global change, which will affect the distribution of typical forest types such as native oak forests. However, our understanding responses future conditions still very limited by lack knowledge on dynamics and species-specific multiple drivers. We compared long-term (1966-2006) persistence land cover change among evergreen (cork holm oak) deciduous forests evaluated importance anthropogenic environmental drivers observed...
Abstract We have assessed the fire proneness of main forest types in Portugal classified according to species, using three different approaches: use resource selection ratios applied burned patches, proportion randomly located plots that were and National Forest Inventory plots. The results allowed ranking following decreasing order: maritime pine forests, eucalyptus unspecified broadleaf conifer cork oak chestnut holm forests stone forests. In order understand obtained we structure percent...
Forest ecosystems where periodical tree bark harvesting is a major economic activity may be particularly vulnerable to disturbances such as fire, since debarking usually reduces vigour and protection against external agents. In this paper we asked how cork oak Quercus suber trees respond after wildfires and, in particular, affects post-fire survival resprouting. We gathered data from 22 (4585 trees) that occurred three southern European countries (Portugal, Spain France), covering wide range...
Fire is the most important natural disturbance driving vegetation dynamics in Mediterranean Basin. However, studies relating fire-induced tree responses to both fire severity and plant traits are still scarce this region. We aimed investigate such relationships further develop simple models that could help improve forest management these fire-prone ecosystems. compiled data from 16 sites different regions used relate post-fire of 4155 trees 14 species with indicators characteristics. The...
Abstract Climate change is increasing the frequency of droughts and risk severe wildfires, which can interact with shrub encroachment browsing by wild ungulates. Wild ungulate populations are expanding due, among other factors, to favorable habitat changes resulting from land abandonment or land‐use changes. Understanding how interacts drought affect woody plant mortality, flammability, fire hazard especially relevant in context climate wildfires. The aim this study explore combined effects...
Fire and cork can be considered both the most serious problem valuable resource of Portuguese forests. The existence important areas burned oak stands resulting from severe fire seasons in recent years is an environmental which deserves special attention. This paper makes a multidisciplinary survey focusing on: dimensions Portugal, remarkable resistance to fire, post‐fire management stands, economic ecological effects stands. Particular emphasis given knowledge gaps this context.
We studied the effect of dense populations red and fallow deer on a burned Mediterranean plant community in Portugal. sampled set 12 open fenced plots 2, 3, 4, 8 years after fire occurrence. Each plot was sub-sampled using quadrat grid to estimate relative frequency (proportion quadrats with plants). The temporal trends overall diversity, abundance four most common woody species, modeled Generalized Linear Mixed Models. assemblage composition assessed by use Redundancy Analysis. In increased...