Cristina Fernández Filgueira

Cristina Fernández Filgueira
Xunta de Galicia · Centro de Investigación Forestal Lourizán

PhD

About

162
Publications
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3,287
Citations
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December 1995 - present
Xunta de Galicia
Position
  • Researcher

Publications

Publications (162)
Article
It is well known how fires affect the properties of forest soils depending on its severity. A better understanding of the magnitude of these impacts is essential to setup effective management actions after fire against the losses of soil and biodiversity. However, physical, chemical and biological processes in burnt soils are complex, resulting in...
Article
Full-text available
The effects of fire on soil hydraulic conductivity (K) and soil water repellency (SWR) have been mainly studied by field experiments in forest areas burned by wildfires with a given severity, while the variability of K and SWR with the fire severities has been less investigated. To fill this gap, the changes in the K and SWR with fire severity (ada...
Conference Paper
Full-text available
Los ecosistemas mediterráneos de matorrales pirófitos sin gestión son un combustible forestal con alto riesgo de incendios forestales. Los tratamientos de prevención se presentan como una herramienta eficaz para revertir esta situación. En este contexto, los hongos pueden jugar un papel importante desde los puntos de vista económico y ecológico. Pa...
Poster
Full-text available
Nuestros resultados tan solo mostraron reducciones de la riqueza general de hongos mediante quema, sin efectos sobre la abundancia ni con la aplicación de desbroces. Esto pone de manifiesto la compatibilidad de quemas prescritas y desbroces con la conservación de comunidades de hongos del suelo a largo plazo en matorrales mediterráneos.
Article
The effectiveness of mulching in reducing the risk of erosion has been evaluated in numerous studies. However, its effect on carbon loss has received less attention, despite the potentially negative effects on ecosystem recovery. In this study, the effects of straw helimulching on soil erosion and carbon loss in sediments were investigated after a...
Article
Full-text available
Shrub-dominated ecosystems cover large areas globally and play essential roles in ecological processes. Aboveground biomass expressed on an area basis (AGB) is central to many of the ecological processes and services provided by shrublands and is important as the main fuel source for wildfires. Hence, its accurate estimation in shrublands is crucia...
Article
co-engineering techniques are generally effective at reducing soil erosion and restore vegetal cover after wildfire. However, less evidence exists on the effects of the post-fire eco-engineering techniques to restore plant diversity. To fill this knowledge gap, a standardized regional-scale analysis of the influence of post-fire eco-engineering tec...
Article
Full-text available
Background Forest fires have increased in extent and intensity in the Mediterranean area in recent years, threatening forest ecosystems through loss of vegetation, changes in soil properties, and increased soil erosion rates, particularly in severely burned areas. However, establishing the relationships between burn severity and soil properties tha...
Article
Post-fire salvage logging, a common practice in productive forest stands, can lead to increased soil erosion and loss of soil quality. However, further field research is required to confirm and clarify these effects. This study was conducted in NW Spain, in productive mixed stands of P. sylvestris and P. pinaster affected in the summer of 2015 by a...
Article
Full-text available
Prescribed burning is a tool that is frequently used for various land management objectives, mainly related to reduction of hazardous forest fuels, habitat management and ecological restoration. Given the crucial role of soil in forest ecosystem processes and functions, assessing the effects of prescribed burning on soil is particularly relevant. T...
Chapter
Full-text available
Nos últimos tempos estase a constatar que os incendios forestais afectan cada vez con máis virulencia a edificacións e persoas. Esa interface urbano-forestal, que até hai pouco só illadamente era pasto das lapas, agora vese decote ameazada polos lumes, de tal xeito que a súa protección se converte no obxectivo prioritario das operacións de extinció...
Article
Full-text available
Resilience is not a particularly novel concept, but it has recently become frequently used as a measurement indicator of adaptation capacity under different approaches depending on the field of study. Ideally, for example, forest ecosystems would be resilient to wildfires, one of the most serious types of perturbation they are subjected to. In area...
Article
Full-text available
A methodology to estimate the extent of areas affected by forest fires, as well as the burn severity levels using Sentinel 2 images (10 and 20 m) is proposed and applied to the fires occurred in October 2017 in Spain and Portugal. An extension larger than 250,000 ha and 4 burn severity levels (low, moderate, high and very high) have been obtained....
Article
Full-text available
Wildfires are known to be one of the main causes of soil erosion and land degradation, and their impacts on ecosystems and society are expected to increase in the future due to changes in climate and land use. It is therefore vital to mitigate the increased hydrological and erosive response after wildfires to maintain the sustainability of ecosyste...
Article
Slope stabilization treatments like mulching are commonly used to reduce runoff and erosion after high severity wildfires. Agricultural straw is the most common material although it is susceptible to be blown away by the wind or introduce non-native plants. Although these limitations do not apply to wood-based mulch, this material has not been wide...
Article
Straw mulch is commonly applied to land after high-severity wildfires because of its effectiveness in reducing post-fire runoff and erosion. However, information about the effect on vegetation recovery is still scarce and usually limited to the first 2 years after wildfire. In this study, the effects of straw helimulching on vegetation recovery and...
Chapter
Climate tends toward drier conditions in most regions, particularly in the Mediterranean Basin. These changes may affect forest fire regime parameters, such as severity. Rainfall events also control postfire regeneration, mainly in the early stages, and water availability may lead to differential response of the vegetation and could induce changes...
Article
Soil erosion can potentially threaten different resources inside and outside of burned areas, and the risk of water becoming contaminated with sediment may be particularly severe. Various post‐fire actions, such as applying straw mulch, have been carried out in NW Spain in recent years with the aim of mitigating the risk of soil erosion. Nonetheles...
Article
Mulching application and salvage logging are often performed in forests after wildfire to avoid soil erosion and recover timber values, respectively. Mulch may increase soil moisture and decrease contrasted temperatures, which thus promotes seedling recruitment, whereas logging operations may destroy seedlings or generate soil compaction, which may...
Article
Full-text available
Purpose Soil erosion is one of the most detrimental consequences of forest fires. The present study aimed to compare the effectiveness of helimulching and needle cast for reducing soil loss after wildfire in NW Spain. Materials and methods Sediment yields were determined during the first 2 years after fire in 30 plots (80 m²) established in an are...
Conference Paper
Full-text available
La determinación rápida del efecto del fuego sobre un territorio determina el éxito de las tareas de estabiliza-ción, que son realizadas en un contexto de urgencia y medios limitados. Los diagnósticos de severidad del fuego sobre una zona se apoyan en información remota con la elaboración de distintos índices espectrales. A pesar del innegable avan...
Article
Mastication is commonly used as a fuel reduction treatment to minimize severe wildfires in fire-prone areas worldwide. Although mastication of non-commercial burned trees has become common practice in NW Spain in recent years, little is known about the possible effects on fuels, soil physical properties and vegetation recovery. In this study, sites...
Article
Helimulching is commonly applied after high-severity wildfires in North America because of its effectiveness in reducing post-fire runoff and erosion. However, its use in other parts of the world is still very limited and information about its effects in different environments is scarce. In this study, the effects of helimulching on vegetation reco...
Article
Full-text available
Forest fires in Galicia have become a serious environmental problem over the years. This is especially the case in the Pontevedra region, where in October 2017 large fires (>500 hectares) burned more than 15,000 Ha. In addition to the area burned being of relevance, it is also very important to know quickly and accurately the different severity deg...
Conference Paper
Plurifor: a transnational management of forest fire Fires are a major hazard observed in the forests in southwestern Europe. In 2017, approximately 540,630 hectares of forest were burned in Portugal, 178,234 ha in Spain and 26,378 in France. Furthermore, forest fire occurrence and severity tend to increase with climate change and human activities....
Article
Forest mastication is frequently used as a fuel reduction treatment aimed at minimising severe wildfires in fire prone areas worldwide. In recent years, mastication of non-commercial burned trees has become common practice in NW Spain, as a way of providing cover on the burned soil and preventing erosion. However, little is known about the possible...
Article
The immediate effects of a low soil burn severity wildfire on hydrological parameters and soil erosion were evaluated in a Pinus pinaster Ait. stand by means of rainfall simulations (140 mm h⁻¹). The unburned forest soil was repellent at the mineral surface (100%) at the same degree as the burned ones. The diameter of soil aggregates and the partic...
Article
Various different factors have led to the accumulation of biomass in forest soils in the Mediterranean-climate region in the last few decades, thus exacerbating the effects of wildfires. Although prescribed burning is used to decrease the fuel load and reduce the currency of mega-wildfires, the impacts on soil organic matter (SOM) and nutrient cycl...
Chapter
Post-fire soil erosion is of major concern because of the effects it has on both soil and water resources. Rapid assessment of post-fire soil burn severity is essential for planning mitigation actions aimed at reducing post-fire flood and erosion risk. Soil burn severity is spatially heterogeneous and mainly depends on the type of vegetation, topog...
Chapter
An increased erosive-hydrologic risk is one of the most dramatic consequences of forest fires. This phenomenon can be particularly severe in places like Galicia where the combination of different factors makes that risk greater than elsewhere in Spain. This paper briefly discusses these factors and outlines the action protocol for the planning of t...
Chapter
Increased erosive risk is considered one of the most detrimental consequences of forest fires in Galicia( N.W. Spain), a region particularly affected by wildfire and where post-fire soil losses reach the highest values in the Ibererian Peninsula.This chapter reports the efforts of emergency rehabilitation in burned areas that are being currently ca...
Chapter
Fire Effects on Soil Properties brings together current research on the effects of fire on the physical, biological and chemical properties of soil. Written by over 60 international experts in the field, it includes examples from fire-prone areas across the world, dealing with ash, meso and macrofauna, smouldering fires, recurrent fires and managem...
Article
Thousands of hectares of conifer plantations are affected every year by wildfire and subsequent erosion in the Mediterranean region. However, little is known about how post-fire erosion is influenced by the mechanical site preparation (MSP) techniques used at plantation establishment. Such information is needed for planning further reforestation, f...
Article
Land managers need scientifically-based information to enable them to select the most appropriate treatments for reduction of high-severity wildfires in shrubland areas. The soil seed bank is known to play a key role in the post-disturbance recovery of shrubland communities, although information about how it is affected by fuel reduction treatments...
Article
Severe fire greatly increases soil erosion rates and overland-flow in forest land. Soil erosion prediction models are essential for estimating fire impacts and planning post-fire emergency responses. We evaluated the performance of a) the Revised Universal Soil Loss Equation (RUSLE), modified by inclusion of an alternative equation for the soil ero...
Article
Full-text available
Studies of the effects of fuel reduction treatments on the recovery of shrubland communities have increased substantially in recent years. However, the effects on the resprouting response of shrubs have been less well studied, even though such information would help land managers select the most appropriate treatment. Cytisus oromediterraneus Riv....
Article
Simple, rapid and reliable methods of assessing soil burn severity (SBS) are required in order to prioritize postfire emergency stabilization actions. SBS proxies based on visual identification and changes in soil organic matter (SOM) content and quality can be related to other soil properties in order to determine the extent towhich soil is pertur...
Article
Forest productivity is limited by soil P availability in several forest ecosystems worldwide. Most of the soil available P is probably produced by the mineralization of organic forms of P when these forms dominate in the soil. Severe wildfires lead to loss of soil organic compounds and therefore represent a strong risk of loss of soil P. The object...
Article
Full-text available
p>Fire severity evaluation and mapping following wildfire is an essential task for post-fire rehabilitation activities and forest management planning. For that purpose, some spectral indexes are used to quantify the changes caused by fire, being Landsat satellite one of the most frequently used. Even though Galicia is the Spanish region with the hi...
Research
Full-text available
Folleto resúmen para la evaluación urgente del riesgo de erosión post-incendio
Article
Full-text available
Key message Experimental damage was induced by controlled application of heat to Pinus pinaster trees. The results suggest that low intensity fires and prescribed burning will scarcely affect the trees. Abstract Pinus pinaster is a prominent component of the western Mediterranean forest and is frequently affected by wildfires. However, little is k...
Article
Full-text available
Aim of study: To evaluate how a plant community responded to a backfire that occurred four years after application of different types of fuel-reduction treatments. Area of study: Erica umbellata Loefl. (L.)-dominated heathland in Galicia (NW Spain). Materials and Methods: Shrub cover surveys in 16 experimental plots from 2006 to 2014. Fuel reductio...
Article
Full-text available
Os incendios forestais constitúen unha das perturbacións máis frecuentes e importantes que sofren os ecosistemas forestais de Galicia. Cando, tras o lume, conflúen nunha área queimada de relevo pronunciado, altos niveis de perturbación no solo e na vexetación e elevadas precipitacións, existe un risco potencial de fortes alteracións na resposta hid...
Article
Straw mulching is increasingly used after high severity wildfires for reducing post-fire runoff and erosion but can alter post-fire vegetation regeneration. However, information about the extent to which mulching affects the recovery of native vegetation is inconclusive. The soil seed bank plays an important role in the resilience of frequently dis...
Article
Prescribed fire has been widely used as a fuel reduction tool and silvicultural treatment in Mediterranean forest ecosystems. However, other than the fact that fire may alter microsite conditions, little is known about the impact of prescribed burning on the natural regeneration of Spanish black pine (Pinus nigra Arn. ssp. salzmanii). In this study...
Article
Full-text available
Pinus pinaster Ait., a prominent component of the western Mediterranean forest, is a species currently suffering a high wildfire pressure and consequently becoming a prime candidate for fuel reduction treatments. However, little is known about the efficiency and longevity of modification of the fuel complex structure for fire hazard reduction treat...
Article
Intensive management has been proposed as a method of preserving European heathland ecosystems, many of which have undergone a process of decline in the last decades. Non-intensive management techniques such as prescribed burning, shrub clearing and mechanical shredding could also play a role in heathland preservation and simultaneously be used to...
Article
The accelerated erosion that occurs after wildfire in forest ecosystems is a major factor affecting the sustainability of these environments. Soil erosion prediction models are crucial for estimating fire impacts and for planning post-fire soil stabilization measures. We evaluated the performance of the Revised Universal Soil Loss Equation (RUSLE)...
Article
The impacts of forest fires on runoff and soil erosion have been assessed by many studies, so the effects of fires on the hydrological and geomorphological processes of burnt forest areas, globally and in the Mediterranean region, are well established. Few studies, however, have assessed post-fire runoff and erosion on large time scales. In additio...
Article
Fire severity is recognized as a key factor in explaining post-fire soil erosion. However, the relationship between soil burn severity and soil loss has not been fully established until now. Sediment availability may also affect the extent of post-fire soil erosion. The objective of this study was to determine whether soil burn severity, estimated...
Article
Full-text available
Resumen La aplicación de mulching de paja u otros materiales después de incendio se ha mostrado como un trata-miento eficaz para reducir las pérdidas de suelo por erosión. Sin embargo, esta cubierta puede afectar a la re-generación natural de la vegetación. Además, el uso de paja de origen agrícola podría aumentar el riesgo de invasión de plantas a...
Article
Mulching is frequently used to reduce runoff and erosion following high-severity wildfires. In commercial forest stands, post-fire salvage logging is common practice, although it can lead to increased erosion losses in recently burned areas. Field research concerning the effects of post-fire salvage logging on sediment production is limited and the...
Article
Land managers need information about the environmental effects of fuel reduction techniques to select the most appropriate treatments in terms of conservation of ecosystem diversity and function. In this study, shrub cover recovery was monitored during the first four years after prescribed burning, clearing and mastication in a gorse shrubland domi...
Article
Erosion barriers have traditionally been used in Europe by land managers to reduce runoff and erosion after high severity wildfires. However, field research investigating the effectiveness of this treatment is scarce in Europe. Previous research in the US and Europe has demonstrated that application of straw mulch at a rate of 2Mgha-1 effectively r...
Article
Prescribed fire is used to reduce wildfire hazard in many ecosystems worldwide. However, alternative techniques such as mechanical fuel reduction are easier and safer to carry out under a wide range of weather conditions. Nonetheless, information about the associated environmental effects is still scarce, although critical to help land managers sel...