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Selection: with tag spain [126 articles] 

 

Sun in parts of UK and France blocked out the smoke from wildfires in Spain and Portugal

  
Severe Weather Europe, Vol. 2017 (2017), 111799

Abstract

[Excerpt] [...] Parts of Spain and Portugal are experiencing extreme fires, caused by a combination of a dry spring and summer and likely arson. The thick smoke was advected by southerly winds into the Bay of Biscay, northwestern France (Brittany) and across the United Kingdom. Residents of this area awoke to a dark orange and brown sky, with the Sun either completely blocked or strongly subdued. While smoke from fires being blown large distances is not rare, it is rare for ...

 

A new methodology for estimating rainfall aggressiveness risk based on daily rainfall records for multi-decennial periods

  
Science of The Total Environment, Vol. 615 (2018), pp. 564-571

Abstract

[Highlights] [::] A new methodology is proposed to estimate the rainfall aggressiveness risk. [::] This methodology is based on daily rainfall records. [::] A new synthesis parameter based on Modified Fournier and Oliver's indices is used. [::] It is calibrated with respect to the erosivity R factor for a simultaneity period. [::] The SW of Iberian Peninsula has been selected to test its regional application. [Abstract] The temporal irregularity of rainfall, characteristic of a Mediterranean climate, corresponds to the irregularity of the environmental effects on soil. We used ...

 

Post-fire salvage logging alters species composition and reduces cover, richness, and diversity in Mediterranean plant communities

  
Journal of Environmental Management, Vol. 133 (January 2014), pp. 323-331, https://doi.org/10.1016/j.jenvman.2013.12.014

Abstract

[Highlights] [::] We tested the effects of post-fire salvage logging on plant communities. [::] Logging reduced plant species richness, diversity, and cover. [::] Species composition in salvaged sites resembled early-successional habitats. [::] Unsalvaged sites yielded greater tree regeneration. [Abstract] An intense debate exists on the effects of post-fire salvage logging on plant community regeneration, but scant data are available derived from experimental studies. We analyzed the effects of salvage logging on plant community regeneration in terms of species richness, diversity, cover, and composition by experimentally managing a ...

 

Analysis of recent spatial–temporal evolution of human driving factors of wildfires in Spain

  
Natural Hazards, Vol. 84, No. 3. (2016), pp. 2049-2070, https://doi.org/10.1007/s11069-016-2533-4

Abstract

Fire regimes are strongly dependent on human activities. Understanding the relative influence of human factors on wildfire is an important ongoing task especially in human-dominated landscapes such as the Mediterranean, where anthropogenic ignitions greatly surpass natural ignitions and human activities are modifying historical fire regimes. Most human drivers of wildfires have a temporal dimension, far beyond the appearance of change, and it is for this reason that we require an historical/temporal analytical perspective coupled to the spatial dimension. In this paper, ...

 

Impacts of future land use/land cover on wildfire occurrence in the Madrid region (Spain)

  
Regional Environmental Change In Regional Environmental Change, Vol. 16, No. 4. (2016), pp. 1047-1061, https://doi.org/10.1007/s10113-015-0819-9

Abstract

This paper assesses the relative importance of socioeconomic factors linked to fire occurrence through the simulation of future land use/land cover (LULC) change scenarios in the Madrid region (Spain). This region is a clear example of the socioeconomic changes that have been occurring over recent decades in the European Mediterranean as well as their impact on LULC and fire occurrence. Using the LULC changes observed between 1990 and 2006 as a reference, future scenarios were run up to 2025 with the ...

 

Fire regime changes in the Western Mediterranean Basin: from fuel-limited to drought-driven fire regime

  
Climatic Change In Climatic Change, Vol. 110, No. 1-2. (1 January 2012), pp. 215-226, https://doi.org/10.1007/s10584-011-0060-6

Abstract

Wildfires are an integral part of Mediterranean ecosystems; humans impact on landscapes imply changes in fuel amount and continuity, and thus in fire regime. We tested the hypothesis that fire regime changed in western Mediterranean Basin during the last century using time series techniques. We first compiled a 130-year fire history for the Valencia province (Spain, Eastern Iberian Peninsula, Western Mediterranean Basin) from contemporary statistics plus old forest administration dossiers and newspapers. We also compiled census on rural population and climatic ...

 

Recurrent wildfires constrain long-term reproduction ability in Pinus halepensis Mill.

  
International Journal of Wildland Fire, Vol. 17, No. 5. (2008), 579, https://doi.org/10.1071/wf07078

Abstract

Increasing fire recurrence is a major problem threatening Mediterranean-type ecosystems. Moreover, this pattern is predicted to increase owing to global change. Although a reduction in the density and growth of post-fire regeneration is usually observed in recurrently burnt areas, the potential effects on reproductive ability have seldom been explored. The aim of the present study is to investigate whether structural changes induced by fire recurrence may constrain reproduction ability of Pinus halepensis forests. We conducted the current study in Catalonia (NE ...

 

Robust projections of Fire Weather Index in the Mediterranean using statistical downscaling

  
Climatic Change, Vol. 120, No. 1-2. (2013), pp. 229-247, https://doi.org/10.1007/s10584-013-0787-3

Abstract

The effect of climate change on wildfires constitutes a serious concern in fire-prone regions with complex fire behavior such as the Mediterranean. The coarse resolution of future climate projections produced by General Circulation Models (GCMs) prevents their direct use in local climate change studies. Statistical downscaling techniques bridge this gap using empirical models that link the synoptic-scale variables from GCMs to the local variables of interest (using e.g. data from meteorological stations). In this paper, we investigate the application of statistical ...

 

On the key role of droughts in the dynamics of summer fires in Mediterranean Europe

  
Scientific Reports, Vol. 7, No. 1. (6 March 2017), 81, https://doi.org/10.1038/s41598-017-00116-9

Abstract

Summer fires frequently rage across Mediterranean Europe, often intensified by high temperatures and droughts. According to the state-of-the-art regional fire risk projections, in forthcoming decades climate effects are expected to become stronger and possibly overcome fire prevention efforts. However, significant uncertainties exist and the direct effect of climate change in regulating fuel moisture (e.g. warmer conditions increasing fuel dryness) could be counterbalanced by the indirect effects on fuel structure (e.g. warmer conditions limiting fuel amount), affecting the transition between climate-driven and ...

 

Modelling the effect of soil burn severity on soil erosion at hillslope scale in the first year following wildfire in NW Spain

  
Earth Surface Processes and Landforms, Vol. 41, No. 7. (15 June 2016), pp. 928-935, https://doi.org/10.1002/esp.3876

Abstract

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 by an operational classification system based on visual indicators, can significantly explain soil loss in the first year after wildfire in shrubland and other areas affected by ...

 

Modelling post-fire soil erosion hazard using ordinal logistic regression: a case study in South-eastern Spain

  
Geomorphology, Vol. 232 (March 2015), pp. 117-124, https://doi.org/10.1016/j.geomorph.2014.12.005

Abstract

[Highlights] [::] A method to identify most vulnerable areas towards soil erosion has been proposed. [::] Slope steepness, aspect and fire severity were the inputs. [::] The field data were successfully fit to the model in 60% of cases after 50 runs. [::] North-facing slopes were shown to be less prone to soil erosion than the rest. [Abstract] Treatments that minimize soil erosion after large wildfires depend, among other factors, on fire severity and landscape configuration so that, in practice, most of them are applied according to ...

 

Wildfire effects on soil erodibility of woodlands in NW Spain

  
Land Degradation & Development, Vol. 21, No. 2. (March 2010), pp. 75-82, https://doi.org/10.1002/ldr.896

Abstract

Knowledge of soil erodibility following wildfire is of crucial importance for prioritisation of post-fire restoration practices for soil erosion mitigation. The present work therefore aims to determine the effect of wildfire on soil erodibility for common woodlands in Galicia, NW Spain. This is done by comparing selected topsoil properties of 28 pairs of recently wildfire-burned and neighbouring unburned sites on different geologic substrates. The soil properties were selected for their supposed importance in erodibility, and include aggregate size distribution and water ...

 

Silver fir defoliation likelihood is related to negative growth trends and high warming sensitivity at their southernmost distribution limit

  
ISRN Forestry, Vol. 2012 (2012), pp. 1-8, https://doi.org/10.5402/2012/437690

Abstract

Changes in radial growth have been used to estimate tree decline probability since they may indicate tree responses to long- and short-term stressors. We used visual assessments of crown defoliation, an indicator of decline, and retrospective tree-ring analyses to determine whether climate-growth sensitivity and tree growth rates may be used as predictors of tree die-off probability in Abies alba (silver fir) at the Spanish Pyrenees. We used climatic data to calculate standardized temperature and precipitation data and drought indexes. Basal area ...

 

Modelling long-term fire occurrence factors in Spain by accounting for local variations with geographically weighted regression

  
Natural Hazards and Earth System Science, Vol. 13, No. 2. (11 February 2013), pp. 311-327, https://doi.org/10.5194/nhess-13-311-2013

Abstract

Humans are responsible for most forest fires in Europe, but anthropogenic factors behind these events are still poorly understood. We tried to identify the driving factors of human-caused fire occurrence in Spain by applying two different statistical approaches. Firstly, assuming stationary processes for the whole country, we created models based on multiple linear regression and binary logistic regression to find factors associated with fire density and fire presence, respectively. Secondly, we used geographically weighted regression (GWR) to better understand and explore ...

 

Estimating live fine fuels moisture content using meteorologically-based indices

  
International Journal of Wildland Fire, Vol. 10, No. 2. (2001), pp. 223-240, https://doi.org/10.1071/WF01022

Abstract

Field measurements of moisture content of several fine fuels (shrub vegetation and live foliage) were performed in Central Portugal and in Catalunya (NE Spain) for 1–10 years. Seasonal and interannual variation of live fine fuels of several species in two regions of the Iberian Peninsula are analysed. The species were grouped in three sets according to their relatively high, intermediate or low seasonal variability. Meteorological data from nearby stations were collected in each study area and used in the evaluation of ...

 

Live fuel moisture content and ignition probability in the Iberian peninsular territory of Spain

  
GeoFocus, Vol. 13, No. 2. (2013), pp. 25-40

Abstract

This paper presents an operational algorithm to produce Live Fuel Moisture Content (LFMC) at national scale from MODIS data. The algorithm is based on the inversion of Radiative Transfer Models (RTM) that estimate moisture content based on different simulation scenarios. In addition, logistic regression models were calibrated to convert the derived LFMC values into Ignition Probability (IP) maps. The areas under the curve obtained by the Receiver Operating Characteristic (ROC) plot method provided by the models were close to 0.6. Several ...

 

Remotely sensed Live Fuel Moisture retrieval using Radiative Transfer Models

  
(2012)

Abstract

La presente tesis doctoral ha tenido como objetivo principal el estimar el contenido de humedad de la vegetación viva (LFMC) en el contexto de la evaluación del riesgo de incendio. El área de estudio ha sido la comprendida por la región Mediterránea y Eurosiberiana, ambas localizadas en el territorio peninsular español. La teledetección espacial es una herramienta útil y prometedora para estimar parámetros biofísicos. Por lo tanto, las imágenes de satélite procedentes del programa MODIS (MODerate-resolution Imaging Spectroradiometer) a 500m ...

 

Decreasing fires in Mediterranean Europe

  
PLoS ONE, Vol. 11, No. 3. (16 March 2016), e0150663, https://doi.org/10.1371/journal.pone.0150663

Abstract

Forest fires are a serious environmental hazard in southern Europe. Quantitative assessment of recent trends in fire statistics is important for assessing the possible shifts induced by climate and other environmental/socioeconomic changes in this area. Here we analyse recent fire trends in Portugal, Spain, southern France, Italy and Greece, building on a homogenized fire database integrating official fire statistics provided by several national/EU agencies. During the period 1985-2011, the total annual burned area (BA) displayed a general decreasing trend, with the ...

 

Potential insect vectors of Bursaphelenchus spp. (Nematoda: Parasitaphelenchidae) in Spanish pine forests

  
In Pine Wilt Disease: A Worldwide Threat to Forest Ecosystems (2008), pp. 221-234, https://doi.org/10.1007/978-1-4020-8455-3_19

Abstract

Potential insect vectors of Bursaphelenchus xylophilus (PWN) were studied. Pathways of introduction of PWN from Portugal to Europe, through Spain, were determined and traps were located in pine stands sites along the pathways. 19 Cerambycidae, 12 Scolytidae, 12 Buprestidae and 10 Curculionidae species have been found. Trapped insects were examined for the presence of nematodes under their elytra. Nematodes were found on Arhopalus ferus, Spondylis buprestoides, Hylastes ater, Hylurgus lingniperda, Orthotomicus erosus, Pityogenes bidentatus, Tomicus piniperda, Hylobius abietis and Pissodes validirrostris ...

 

Human-caused wildfire risk rating for prevention planning in Spain

  
Journal of Environmental Management, Vol. 90, No. 2. (February 2009), pp. 1241-1252, https://doi.org/10.1016/j.jenvman.2008.07.005

Abstract

This paper identifies human factors associated with high forest fire risk in Spain and analyses the spatial distribution of fire occurrence in the country. The spatial units were 6,066 municipalities of the Spanish peninsular territory and Balearic Islands. The study covered a 13-year series of fire occurrence data. One hundred and eight variables were generated and input to a dedicated Geographic Information System (GIS) to model different factors related to fire ignition. After exploratory analysis, 29 were selected to build a ...

 

Linking ecological information and radiative transfer models to estimate fuel moisture content in the Mediterranean region of Spain: solving the ill-posed inverse problem

  
Remote Sensing of Environment, Vol. 113, No. 11. (16 November 2009), pp. 2403-2411, https://doi.org/10.1016/j.rse.2009.07.001

Abstract

Live fuel moisture content (FMC) is a key factor required to evaluate fire risk and its operative and accurate estimation is essential for allocating pre-fire resources as a part of fire prevention. This paper presents an operative and accurate procedure to estimate FMC though MODIS (moderate resolution imaging spectrometer) data and simulation models. The new aspects of the method are its consideration of several ecological criteria to parameterize the models and consistently avoid simulating unrealistic spectra which might produce indetermination (ill-posed) ...

 

Improving the assessment and reporting on rare and endangered species through species distribution models

  
Global Ecology and Conservation, Vol. 2 (December 2014), pp. 226-237, https://doi.org/10.1016/j.gecco.2014.09.011

Abstract

Species distribution models (SDMs) are increasingly used to understand rare and endangered species distributions, as well as the environmental pressures affecting them. Detailed knowledge of their distribution is critical for reporting its conservation status, and SDMs are potential tools to provide the relevant information to conservation practitioners. In this study, we modeled the distribution of Veronica micrantha, a vulnerable plant whose conservation status has to be periodically assessed under Article 17 of the Habitats Directive. [\n] The objective was to highlight the ...

 

Diversity increases carbon storage and tree productivity in Spanish forests

  
Global Ecology and Biogeography, Vol. 23, No. 3. (1 March 2014), pp. 311-322, https://doi.org/10.1111/geb.12126

Abstract

[Aim] Biodiversity loss could reduce primary productivity and the carbon storage provided by forests; however, the mechanisms underpinning the effects of biodiversity on multiple ecosystem functions are not completely understood. Spanish forests are of particular interest because of the broad variation in environmental conditions and management history. We tested for the existence of a relationship between diversity effects and both carbon storage and tree productivity, and examined the relative importance of complementarity and selection mechanisms in a wide variety of forests, ...

 

Estimate of the (R)USLE rainfall erosivity factor from monthly precipitation data in mainland Spain

  
Journal of Iberian Geology, Vol. 42, No. 1. (07 June 2016), https://doi.org/10.5209/rev_jige.2016.v42.n1.49120

Abstract

The need for continuous recording rain gauges makes it difficult to determine the rainfall erosivity factor (R-factor) of the (R)USLE model in areas without good temporal data coverage. In mainland Spain, the Nature Conservation Institute (ICONA) determined the R-factor at few selected pluviographs, so simple estimates of the R-factor are definitely of great interest. The objectives of this study were: (1) to identify a readily available estimate of the R-factor for mainland Spain; (2) to discuss the applicability of a single ...

 

How does forest landscape structure explain tree species richness in a Mediterranean context?

  
Biodiversity and Conservation In Biodiversity and Conservation, Vol. 17, No. 5. (1 May 2008), pp. 1227-1240, https://doi.org/10.1007/s10531-007-9277-0

Abstract

Although the strong relationship between vegetation and climatic factors is widely accepted, other landscape composition and configuration characteristics could be significantly related with vegetation diversity patterns at different scales. Variation partitioning was conducted in order to analyse to what degree forest landscape structure, compared to other spatial and environmental factors, explained forest tree species richness in 278 UTM 10 × 10 km cells in the Mediterranean region of Catalonia (NE Spain). Tree species richness variation was decomposed through linear regression into three groups of ...

 

Differential responses of ecosystem components to a low-intensity fire in a Mediterranean forest: a three-year case study

  
Community Ecology, Vol. 14, No. 1. (June 2013), pp. 110-120, https://doi.org/10.1556/comec.14.2013.1.12

Abstract

Mediterranean forests are especially prone to fire, a periodic disturbance that affects all the ecosystem components in different ways. Gathering knowledge on the particular responses and rate of recovery of multiple ecosystem components following a wildfire is crucial to reliably evaluate its consequences on biodiversity. Using eight sampling transects, we studied the changes in four ecosystem components (topsoil, plants, carabids, and staphylinids) during three years after a spring wildfire in a Quercus pyrenaica forest; and compared them with the surrounding unburnt forest (hereafter control). We ...

 

Ecological services of urban forest in Barcelona

  
(2009)

Abstract

[Excerpt: Summary] Forests and urban trees generally offer multiple services and environmental benefits to society. These trees are distributed into different land uses (in our case, land uses are defined from the third edition of Mapa Ecològic de Barcelona, 2006), ranging from forest environments and gardens, to densely built areas or polluted urban environments. The structure, and consequently the composition, of urban forest vary in these different land uses, whether public or private. Trees, and the functions and services that they offer, such as air quality improvement, carbon sequestration or temperature reduction, ...

 

EucaTool®, a cloud computing application for estimating the growth and production of Eucalyptus globulus Labill. plantations in Galicia (NW Spain)

  
Forest Systems, Vol. 24, No. 3. (03 December 2015), eRC06, https://doi.org/10.5424/fs/2015243-07865

Abstract

[Aim of study] To present the software utilities and explain how to use EucaTool®, a free cloud computing application developed to estimate the growth and production of seedling and clonal blue gum (Eucalyptus globulus Labill.) plantations in Galicia (NW Spain). [Area of study] Galicia (NW Spain). [Material and methods] EucaTool® implements a dynamic growth and production model that is valid for clonal and non-clonal blue gum plantations in the region. The model integrates transition functions for dominant height (site index curves), number of ...

 

(INRMM-MiD internal record) List of keywords of the INRMM meta-information database - part 33

  
(February 2014)
Keywords: inrmm-list-of-tags   silviculture   similarity   simple-sequence-repeats   simulation   single-nucleotide-polymorphism   sismic-hazard   site-quality   sitka-spruce   situational-awareness   slope   slope-stability   slovakia   slovenia   slovenian-alps   smoke   smooth-transition   smyrnium-perfoliatum   snow   snow-avalances   so2   soc   social-engineering-risk   social-learning   social-media   social-system   society   socratea-exorrhiza   sodium   soft-constraint   soft-systems-approach   softw   software-control   software-engineering   software-errors   software-evolution   software-evolvability   software-libraries   software-patents   software-quality   software-security   software-uncertainty   software-validity   software-verification   soil   soil-carbon   soil-compactation   soil-conditions   soil-erosion   soil-evolution   soil-fertility   soil-food   soil-formation   soil-hydrophobicity   soil-loss   soil-microbial-properties   soil-moisture   soil-pollution   soil-resources   soil-restoration   soil-sealing   soil-stabilization   soils   solanum-dulcamara   solanum-spp   solar-energy   solar-radiation   solid-phase-microextraction   sonneratia-apetala   soot   sophora-chrysophylla   sophora-secundiflora   sophora-spp   sorbus-aria   sorbus-aucuparia   sorbus-domestica   sorbus-intermedia   sorbus-spp   sorbus-torminalis   sorex-spp   south-america   south-asia   southeast-asia   southeastern-europe   southern-africa   southern-alps   southern-asia   southern-europe   southern-oscillation   spain   spartium-junceum   spathodea-campanulata   spatial-analysis   spatial-disaggregation   spatial-ecology   spatial-interpolation   spatial-pattern   spatial-prioritization   spatial-resolution   spatial-spread  

Abstract

List of indexed keywords within the transdisciplinary set of domains which relate to the Integrated Natural Resources Modelling and Management (INRMM). In particular, the list of keywords maps the semantic tags in the INRMM Meta-information Database (INRMM-MiD). [\n] The INRMM-MiD records providing this list are accessible by the special tag: inrmm-list-of-tags ( http://mfkp.org/INRMM/tag/inrmm-list-of-tags ). ...

 

Soil carbon stocks and their variability across the forests, shrublands and grasslands of peninsular Spain

  
Biogeosciences, Vol. 10, No. 12. (2013), pp. 8353-8361, https://doi.org/10.5194/bg-10-8353-2013
Keywords: soc   soil-carbon   spain  

Abstract

Accurate estimates of C stocks and fluxes of soil organic carbon (SOC) are needed to assess the impact of climate and land use change on soil C uptake and soil C emissions to the atmosphere. Here, we present an assessment of SOC stocks in forests, shrublands and grasslands of peninsular Spain based on field measurements in more than 900 soil profiles. SOC to a depth of 1 m was modelled as a function of vegetation cover, mean annual temperature, total annual ...

 

How are riparian plants distributed along the riverbank topographic gradient in Mediterranean rivers? Application to minimally altered river stretches in Southern Spain

  
Limnetica, Vol. 33, No. 1. (2014), pp. 121-137

Abstract

Species structure and composition in Mediterranean riparian forests are determined by hydrological features, longitudinal zonation, and riverbank topography. This study assesses the distribution of four native riparian plants along the riverbank topographic gradient in three river stretches in southern Spain, with special emphasis on the occupation of adult and young feet of each species. The studied stretches suffered minimal human disturbances, displayed semi-arid conditions, and had wide riparian areas to allow the development of the target species: black alder (Alnus glutinosa), ...

 

Characterization of Fusarium circinatum from Pinus spp. in northern Spain

  
Mycological Research, Vol. 111, No. 7. (July 2007), pp. 832-839, https://doi.org/10.1016/j.mycres.2007.05.009

Abstract

Pitch canker caused by Fusarium circinatum was recently reported on Pinus spp. in Spain. In this study, a collection of 157 isolates of F. circinatum obtained from different geographical origins and hosts in northern Spain were identified and characterized by cultural and morphological features, PCR-RFLPs of the histone H3 gene, IGS region, and the translation elongation factor 1-alpha gene (TEF). Mating types were determined by multiplex PCR and sexual compatibility was performed under laboratory conditions. Both mating types were present in ...

 

A genetically homogenous population of Fusarium circinatum causes pitch canker of Pinus radiata in the Basque Country, Spain

  
Fungal Biology, Vol. 115, No. 3. (March 2011), pp. 288-295, https://doi.org/10.1016/j.funbio.2010.12.014

Abstract

Pitch canker, caused by Fusarium circinatum, is a destructive disease of Pinus species and has recently been shown to represent a substantial threat to natural and commercial forests in northern Spain. The genetic diversity of F. circinatum in the Basque Country of Spain was assessed by characterising 96 isolates based on vegetative compatibility groups (VCGs), mating type assays, polymorphic DNA-markers and amplified fragment length polymorphism (AFLP) analyses. For this purpose, F. circinatum isolates were collected from diseased Pinus radiata as well ...

 

Outbreak of Pitch Canker caused by Fusarium circinatum on Pinus spp. in Northern Spain

  
Plant Disease, Vol. 89, No. 9. (September 2005), pp. 1015-1015, https://doi.org/10.1094/pd-89-1015a

Abstract

During the winter of 2003-2004, dieback symptoms were observed on Pinus radiata and P. pinaster in pine nurseries in Asturias (northern Spain). Small groups of affected seedlings appeared randomly distributed throughout the nurseries. The seedlings died rapidly, showing basal needle dieback, stem lesions, resin exudations, and wilting. Isolations from infected material onto potato dextrose agar (PDA) supplemented with 0.5 mg/ml of streptomycin sulfate and Komada's medium consistently yielded Fusarium sp. cultures. The isolates were transferred to PDA and Spezieller Nährstoffarmer agar ...

 

Runoff production and erosion processes on a dehesa in Western Spain

  
Geographical Review, Vol. 92, No. 3. (2002), pp. 333-353, https://doi.org/10.2307/4140914

Abstract

Runoff generation and soil erosion were investigated at the Guadalperalon experimental watershed (western Spain), within the land-use system known as dehesa, or open, managed evergreen forests. Season and type of surface were found to control runoff and soil-loss rates. Five soil units were selected as representative of surface types found in the study area: hillslope grass, bottom grass, tree cover, sheep trails, and shrub cover. Measurements were made in various conditions with simulated rainfall to gain an idea of the annual ...

 

Long term persistence of dehesas - Evidences from history

  
Agroforestry Systems In Agroforestry Systems, Vol. 67, No. 1. (April 2006), pp. 19-28, https://doi.org/10.1007/s10457-005-1110-8

Abstract

Dehesas are agrosilvopastoral systems characterized by a savanna-like physiognomy. Today the central problem for the continuity of the dehesas is the gradual decay of tree canopy. We have investigated the history of the vegetation and management of dehesas from the middle ages to the present day in order to know in which conditions they have persisted in the long run. The results show that the word dehesa has been used historically for private grazing lands, with no reference to any vegetation ...

 

Calorific values and flammability of forest species in Galicia. Coastal and hillside zones

  
Bioresource Technology, Vol. 57, No. 3. (September 1996), pp. 283-289, https://doi.org/10.1016/s0960-8524(96)00083-1

Abstract

Changes in heat values and in flammability with the seasons of the year for the different species which make up the woodland map of two zones, Sada (coastal area) and Santiago (hillside and plateau area), situated in La Coruña (Galicia, Spain), are reported. These data were evaluated as a help for fighting forest fires, which have been very frequent in this region during the last decade. The species studied are the most abundant in the areas: Eucalyptus globulus Labill., Pinus pinaster ...

 

Gene flow and hybridisation in a mixed oak forest (Quercus pyrenaica Willd. and Quercus petraea (Matts.) Liebl.) in central Spain

  
Heredity, Vol. 95, No. 6. (26 October 2005), pp. 457-465, https://doi.org/10.1038/sj.hdy.6800752

Abstract

Oaks are long-standing models for the study of gene flow and hybridisation. Temperate (Quercus petraea) and sub-Mediterranean (Quercus pyrenaica) oaks coexist in central Spain, showing remarkable differences in population size and structure. Q. petraea has a scattered distribution in central Spain, where it is at one of the southernmost limits of its range, and forms low-density stands; in contrast, Q. pyrenaica is widespread in the region. We selected a mixed population of the two species (13 ha, 176 adults and 96 saplings) ...

 

Syntaxonomical checklist of vascular plant communities of Spain and Portugal to association level

  
Itinera Geobotanica, Vol. 14 (2001), pp. 5-341

Abstract

This paper is a catalogue of all syntaxa from class to association ever described and recognized in Spain and Portugal (Iberian Peninsula, Balearic, Madeira, Azorean and Canary Islands), according with Braun-Blanquet approach (Braun-Blanquet 1964, Dierschke 1994) and the International Code of Phytosociological Nomenclature (Weber, Moravec & Théurillat 2000). The literature contents near all the publications cited in this paper, particularly those of portuguese and spanish syntaxa authors. The "Syntaxonomical Checklist of Spain and Portugal", prepared during the last ten years as ...

 

Vascular plant communities of Spain and Portugal: addenda to the syntaxonomical checklis of 2001, Part 1

  
Itinera Geobotanica, Vol. 15, No. 1. (2002), pp. 5-435
 

White oaks phylogeography in the Iberian Peninsula

  
Forest Ecology and Management, Vol. 156, No. 1-3. (February 2002), pp. 89-102, https://doi.org/10.1016/s0378-1127(01)00636-3

Abstract

The geographic distribution of maternally inherited chloroplast DNA polymorphisms was studied to determine the phylogeographic structure of white oaks in the Iberian Peninsula. Almost 1000 mature trees from nearly 200 populations were sampled in the distribution areas of the six white oak species that are recognised in Iberia. The analysed trees roughly represent the species distribution and their respective abundance. The PCR–RFLP procedure used by all project partners revealed up to 14 cpDNA haplotypes. Seven of them had not been previously ...

 

Los árboles y arbustos de la Península Ibérica e Islas Baleares (especies silvestres y las principales cultivadas)

  
Vol. 1 (2001)

Abstract

Obra compuesta por dos volúmenes. Este libro es un tratado monográfico en dos volúmenes de los árboles y arbustos que crecen en la Península Ibérica y en las Islas Baleares . Se refiere tanto a los árboles y arbustos silvestres como a los naturalizados y cultivados de forma habitual en nuestros parques, jardines o alamedas. Recoge todo tipo de información y datos curiosos: la descripción de la planta y de la familia a la que pertenece, su distribución, el lugar en ...

 

Evidence for Phytophthora cinnamomi involvement in Iberian oak decline

  
Plant Pathology, Vol. 42, No. 1. (1 February 1993), pp. 140-145, https://doi.org/10.1111/j.1365-3059.1993.tb01482.x

Abstract

Rapid and sometimes extensive mortality and decline of oak, principally Quercus suber and Q. ilex, has occurred in parts of southern Spain and Portugal in recent decades. We report here isolation of the aggressive root pathogen Phytophthora cinnamomi from roots of diseased oaks or from soil at eleven out of thirteen decline foci examined. It is proposed that the introduction and spread of P. cinnamomi may be a major factor in the Iberian oak decline, interacting with drought and other site ...

 

Resprouting of Quercus suber in NE Spain after fire

  
Journal of Vegetation Science, Vol. 8, No. 5. (October 1997), pp. 703-706, https://doi.org/10.2307/3237375

Abstract

Many Mediterranean species have evolved strategies that allow them to survive periodic wildfires. Quercus suber trees resprout after fire, some from stem buds and others from basal buds only. In the former case the canopy recovers quickly. In the latter case the stem dies but the tree survives and regrows from basal sprouts. The probability of stem death and the degree of height recovery were studied after a fire in a Q. suber forest in NE Spain using logistic regression analysis. ...

 

Regeneration in Quercus Pyrenaica ecosystems after surface fires

  
International Journal of Wildland Fire, Vol. 1, No. 4. (1991), 205, https://doi.org/10.1071/wf9910205

Abstract

Early post-fire structural dynamics in three Quercus pyrenaica communities after intense fires was studied. In the first year there is a marked domination of perennial species (herbaceous or woody); afterwards, herbaceous species tend to decrease in importance and ligneous species increase. Changes in species diversity were analysed as an indicator of recovery and stability in the communities. An increase was observed in the second year, and then diversity was maintained or reduced slightly in the third and fourth years. Spatial heterogeneity ...

 

Response of maritime pine (Pinus pinaster Ait.) recruitment to fire severity and post-fire management in a coastal burned area in Galicia (NW Spain)

  
Plant Ecology In Plant Ecology, Vol. 206, No. 2. (2010), pp. 297-308, https://doi.org/10.1007/s11258-009-9643-y

Abstract

Abstract  The short-term effects of fire severity and post-fire management on maritime pine recruitment were evaluated in a mature serotinous pine stand in a coastal area of Galicia (NW Spain) burned by a wildfire occurred in the summer of 2001. Two levels of fire severity estimated by the levels of tree crown damage—scorched and unaffected crown—were compared. Seed dispersal and first cohort pine (November 2001) seedling density, before salvage logging, were significantly and positively affected by fire severity. Between November and January, ...

 

Energy evaluation of the Eucalyptus globulus and the Eucalyptus nitens in the north of Spain (Cantabria)

  
Thermochimica Acta, Vol. 451, No. 1-2. (December 2006), pp. 57-64, https://doi.org/10.1016/j.tca.2006.08.009

Abstract

This work studied the potential use of the waste from Eucalyptus globulus and Eucalyptus nitens as energy crops, evaluating young and adult stages of both in all four seasons of the year with different moisture contents. The study was carried out made in Cantabria (North coast of Spain), located at latitude 43°28′N, and longitude 3°48′W. In this region, 29,513 ha are dedicated to the growth of Eucalyptus, with about 80% E. globulus, and 20% E. nitens. Six different plantations have been analyzed ...

 

Contenido y distribución de nutrientes en plantaciones de Eucalyptus globulus del noroeste de la península Ibérica

  
Investigación Agraria: Sistemas y Recursos Forestales, Vol. 9, No. 1. (2000), pp. 317-335

Abstract

En este trabajo se estudiaron nueve plantaciones de Eucalyptus globulus con edades comprendidas entre 6 y 18 años, localizadas en el norte de España (Lugo y noroeste de Asturias). Se determinó el nivel de nutrientes y su acumulación en las diferentes fracciones de la biomasa arbórea aérea, así como en el horizonte orgánico y en los horizontes minerales del suelo. Las cantidades de P, K, Ca y Mg total encontradas en la biomasa aérea de plantaciones de fin de turno son ...

 

Information System of the plants of Spain

  
(2015)

Abstract

ANTHOS is a program developed with the support and collaboration of the Fundación Biodiversidad (Biodiversity Foundation) (Ministry of Agriculture, Food and Environment) and the Consejo Superior de Investigaciones Científicas (Spanish National Research Council) - Real Jardín Botánico (Royal Botanic Garden) (Ministry of Economy and Competitiveness) in order to show information about biodiversity of the Spanish plant life on the Internet. In the late 1990s, the Flora ibrerica research group, headed by Santiago Castroviejo on that time, considered that the abundance of information ...

 

Flora dels països catalans, vol I-IV

  
(1984-2001)

Abstract

La Flora dels Països Catalans de Oriol de Bolòs y Josep Vigo (1984-2001), fue impulsada por el Institut d’Estudis Catalans. Siendo esencial para su consecución y publicación la información acumulada durante décadas en el Institut Botànic de Barcelona, el patrocinio de la Fundació Jaume I y la generosidad de la Editorial Barcino donde se dibujan, clasifican, describen y se hace la diagnosis ecológica y corológica de más de 4.500 táxones infraespecíficos, agrupados en 3.556 especies, 939 géneros y 147 familias. La delimitación ...

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