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The aim of the Natura 2000 Network is to ensure the conservation of habitats and species in their natural areas of distribution. Connectivity is an essential part of this conservation. For this purpose, a value map of importance for biodiversity (V.I.B) was generated proposing 4 levels of protection and overlapped with the Natura 2000 network. New boundaries for the zoning are proposed adding 1.600.000 ha. Two connectivity indices (MSPA and PC) are calculated in the 4 different scenarios. With these indices it is possible to know the number of existing nuclei and connectors in each of the scenarios. New boundaries cover more areas of interest for biodiversity as well as zones of great importance in relation to connectivity. We propose a uniform method that can be extrapolated to any European territory.
Víctor Rincón; Javier Velázquez; Javier Gutiérrez; Ana Hernando; Alexander Khoroshev; Inmaculada Gómez; Fernando Herráez; Beatriz Sánchez; Juan Pablo Luque; Antonio García-Abril; Tomás Santamaría; Daniel Sánchez-Mata. Proposal of new Natura 2000 network boundaries in Spain based on the value of importance for biodiversity and connectivity analysis for its improvement. Ecological Indicators 2021, 129, 108024 .
AMA StyleVíctor Rincón, Javier Velázquez, Javier Gutiérrez, Ana Hernando, Alexander Khoroshev, Inmaculada Gómez, Fernando Herráez, Beatriz Sánchez, Juan Pablo Luque, Antonio García-Abril, Tomás Santamaría, Daniel Sánchez-Mata. Proposal of new Natura 2000 network boundaries in Spain based on the value of importance for biodiversity and connectivity analysis for its improvement. Ecological Indicators. 2021; 129 ():108024.
Chicago/Turabian StyleVíctor Rincón; Javier Velázquez; Javier Gutiérrez; Ana Hernando; Alexander Khoroshev; Inmaculada Gómez; Fernando Herráez; Beatriz Sánchez; Juan Pablo Luque; Antonio García-Abril; Tomás Santamaría; Daniel Sánchez-Mata. 2021. "Proposal of new Natura 2000 network boundaries in Spain based on the value of importance for biodiversity and connectivity analysis for its improvement." Ecological Indicators 129, no. : 108024.
Ana Hernando; Mathieu Legrand; Carlos Iglesias; Alicia López; Javier Velázquez; Antonio García-Abril. ANALYSIS OF THE WELL-BEING OF TEACHERS AND STUDENTS IN THE CONTEXT OF THE CHANGE FROM FACE-TO-FACE TO REMOTE LEARNING. EDULEARN21 Proceedings 2021, 8338 -8345.
AMA StyleAna Hernando, Mathieu Legrand, Carlos Iglesias, Alicia López, Javier Velázquez, Antonio García-Abril. ANALYSIS OF THE WELL-BEING OF TEACHERS AND STUDENTS IN THE CONTEXT OF THE CHANGE FROM FACE-TO-FACE TO REMOTE LEARNING. EDULEARN21 Proceedings. 2021; ():8338-8345.
Chicago/Turabian StyleAna Hernando; Mathieu Legrand; Carlos Iglesias; Alicia López; Javier Velázquez; Antonio García-Abril. 2021. "ANALYSIS OF THE WELL-BEING OF TEACHERS AND STUDENTS IN THE CONTEXT OF THE CHANGE FROM FACE-TO-FACE TO REMOTE LEARNING." EDULEARN21 Proceedings , no. : 8338-8345.
Se presenta información sobre la localización de lugares de reproducción de la especie Anax imperator Leach, 1815 en lagunas de alta montaña del Sistema Central en la provincia de Ávila. Las citas de reproducción de esta especie en los años 80 en esta zona se limitaban a altitudes cercanas a los 1300 m s.n.m. Sin embargo, coincidiendo con un aumento de las temperaturas debido al cambio climático, esta especie ha ido subiendo en altitud, hasta reproducirse con éxito a altitudes superiores de 1700 m s.n.m.
Víctor Rincón; Tomás Santamaría; Javier Velázquez; Daniel Sánchez Mata. Nuevos registros de reproducción de Anax imperator Leach, 1815 (Odonata: Aeshnidae) en montañas del Sistema Central en España. Graellsia 2021, 77, e136 -e136.
AMA StyleVíctor Rincón, Tomás Santamaría, Javier Velázquez, Daniel Sánchez Mata. Nuevos registros de reproducción de Anax imperator Leach, 1815 (Odonata: Aeshnidae) en montañas del Sistema Central en España. Graellsia. 2021; 77 (1):e136-e136.
Chicago/Turabian StyleVíctor Rincón; Tomás Santamaría; Javier Velázquez; Daniel Sánchez Mata. 2021. "Nuevos registros de reproducción de Anax imperator Leach, 1815 (Odonata: Aeshnidae) en montañas del Sistema Central en España." Graellsia 77, no. 1: e136-e136.
This paper presents a methodology to study the connectivity that livestock trails can offer to guarantee the transit of organisms and access to pasturelands. In this regard, a connectivity analysis was carried out in two scenarios: Basic Scenario (Scenario 1: pasture) and Extended Scenario (Scenario 2: pasture + livestock trails) by using the Morphological Spatial Pattern Analysis (MSPA). The result of structural connectivity analysis, MSPA, showed that livestock trails reduce the fragmentation of the optimal terrain (pasturelands) for livestock activity, since the effective corridors are more numerous, and the edge effect is also reduced. Therefore, MSPA analysis allows the classification of any landscape typology at the pixel level and mapping of corridor structures (connecting elements) and other categories of spatial patterns on a continental scale. The results of the study show the importance of carrying out this type of analysis in different times of the year, detecting the evolution of connectivity throughout the year. Spring months and larger areas of pastureland offer the best conditions for the movements of organisms. This study aims to provide useful information for landscape or territorial planning, and it could be used to improve the management of wildlife dependent on high quality pastures, as well as to promote the management of semi-extensive livestock.
Javier Gutiérrez; Javier Velázquez; Jacobo Rodríguez; Ana Hernando; Inmaculada Gómez; Fernando Herráez; Aida López-Sánchez. Livestock Trails as Keystone Structural Connectors for Pastureland Analysis Based on Remote Sensing and Structural Connectivity Assessment. Sustainability 2021, 13, 5971 .
AMA StyleJavier Gutiérrez, Javier Velázquez, Jacobo Rodríguez, Ana Hernando, Inmaculada Gómez, Fernando Herráez, Aida López-Sánchez. Livestock Trails as Keystone Structural Connectors for Pastureland Analysis Based on Remote Sensing and Structural Connectivity Assessment. Sustainability. 2021; 13 (11):5971.
Chicago/Turabian StyleJavier Gutiérrez; Javier Velázquez; Jacobo Rodríguez; Ana Hernando; Inmaculada Gómez; Fernando Herráez; Aida López-Sánchez. 2021. "Livestock Trails as Keystone Structural Connectors for Pastureland Analysis Based on Remote Sensing and Structural Connectivity Assessment." Sustainability 13, no. 11: 5971.
The space–time dynamics and the effect of urban growth on territory transformation were simulated with Iber 2D to analyze flooding events in the lower basin of the Sabinal River, Mexico. We classified the main coverages and land uses of the study area. Soil roughness and water infiltration in the soil were evaluated. Both values were used as input data in a simulation model with Iber 2D to analyze and compare the levels of water height and maximum flood level area with different precipitation values in two reference years, 1986 and 2014. Residential use land cover increased considerably while tree, pasture and agricultural use covers decreased. Consequently, in 2014, precipitation of similar magnitude led to higher values of direct runoff, increasing water levels and therefore the risk of overflowing. The water levels and moments of river overflow provided feedback for flood‐risk warning systems and tools to monitor basins lacking adequate infrastructure.
Moisés Silva Cervantes; Ana Hernando; Antonio García‐Abril; Rubén Valbuena; Javier Velázquez Saornil; José Antonio Manzanera. Simulation of overflow thresholds in urban basins: Case study in Tuxtla Gutiérrez, Mexico. River Research and Applications 2020, 36, 1307 -1320.
AMA StyleMoisés Silva Cervantes, Ana Hernando, Antonio García‐Abril, Rubén Valbuena, Javier Velázquez Saornil, José Antonio Manzanera. Simulation of overflow thresholds in urban basins: Case study in Tuxtla Gutiérrez, Mexico. River Research and Applications. 2020; 36 (7):1307-1320.
Chicago/Turabian StyleMoisés Silva Cervantes; Ana Hernando; Antonio García‐Abril; Rubén Valbuena; Javier Velázquez Saornil; José Antonio Manzanera. 2020. "Simulation of overflow thresholds in urban basins: Case study in Tuxtla Gutiérrez, Mexico." River Research and Applications 36, no. 7: 1307-1320.
Urbanization is one of the agents that contribute most to habitat fragmentation and is therefore a threat to biodiversity conservation. Connectivity improvement is the adaptation strategy most often cited to address species conservation in a changing environment. Many studies of protection at local and regional level zones usually show separate portions of habitat, defining the protected area, but they do not provide guidance on where and how to act to preserve the habitat quality and connectivity of the populations, on a consistent scale with planning units. In this paper, the analysis of fragmentation-connectivity focuses on cereal steppes of the Jarama and Henares rivers (Spain) to study the habitat and connectivity of steppic birds populations into protected areas of the Natura 2000 network, quantifying the effect on this protected area and on the species of interest caused by the massive development of infrastructure and urbanization due to the expansion of Madrid metropolitan area. In this sense, the Great Bustard (Otis tarda) was used as a bioindicator, due to its high demand for habitat quality. The proposed methodology only needs to be based on data from wildlife sightings and land use. Once the variables (density, biophysics and urbanization) were defined, it was possible to determine the values of influence, applying them to generate the map of areas of probability of presence and movement of the Great Bustard. This can be used to support conservation plans based on habitat connectivity.
J. Gutiérrez; J. Velázquez; A. García-Abril; A. Hernando; B. Sánchez; I. Gómez. Impact model of urban development on steppic birds in natura 2000 spaces. Land Use Policy 2019, 90, 104256 .
AMA StyleJ. Gutiérrez, J. Velázquez, A. García-Abril, A. Hernando, B. Sánchez, I. Gómez. Impact model of urban development on steppic birds in natura 2000 spaces. Land Use Policy. 2019; 90 ():104256.
Chicago/Turabian StyleJ. Gutiérrez; J. Velázquez; A. García-Abril; A. Hernando; B. Sánchez; I. Gómez. 2019. "Impact model of urban development on steppic birds in natura 2000 spaces." Land Use Policy 90, no. : 104256.
J. Velázquez; P. Anza; J. Gutiérrez; B. Sánchez; A. Hernando; A. García-Abril. Planning and selection of green roofs in large urban areas. Application to Madrid metropolitan area. Urban Forestry & Urban Greening 2019, 40, 323 -334.
AMA StyleJ. Velázquez, P. Anza, J. Gutiérrez, B. Sánchez, A. Hernando, A. García-Abril. Planning and selection of green roofs in large urban areas. Application to Madrid metropolitan area. Urban Forestry & Urban Greening. 2019; 40 ():323-334.
Chicago/Turabian StyleJ. Velázquez; P. Anza; J. Gutiérrez; B. Sánchez; A. Hernando; A. García-Abril. 2019. "Planning and selection of green roofs in large urban areas. Application to Madrid metropolitan area." Urban Forestry & Urban Greening 40, no. : 323-334.
The European Union (EU) ensures the conservation of biodiversity through the Natura 2000 Network, which establishes the classification and selection of protected areas at European level. Unfortunately, member countries cannot make the best zoning decisions for biodiversity conservation because there are no clear and uniform parameters to designate Natura 2000 sites. Due to this, it is convenient to evaluate the importance of the criteria for biodiversity conservation through a general assessment, which could establish relevant criteria that can be analysed through geostatistical methods combined in multicriteria analysis. This paper aims to consider biodiversity importance values taking into account land use, so that it is possible to develop a zoning proposal which verifies or corrects the suitability of the designated areas for the Natura 2000 Network in Castilla y León, Andalucía and Madrid (Spain). The choice of these regions allows us to compare areas with a high variability of population density, making possible to compare the potential protected areas with respect to the population living in each area. This assessment has been performed using basic and easily adaptable criteria of biodiversity conservation, so it could be applied in other European territories. In this way, clear and uniform parameters for zoning will be used, being possible to detect the best protected areas. One of the most important purposes of the Natura 2000 Network is to increase connectivity between territories; our work proposes new areas that could be linked to currently protected territories, to favour the achievement of this purpose of the Natura 2000 Network.
Víctor Rincón; Javier Velázquez; Javier Gutiérrez; Beatriz Sánchez; Ana Hernando; Antonio García-Abril; Tomás Santamaría; Daniel Sánchez-Mata. Evaluating European Conservation Areas and Proposal of New Zones of Conservation under the Habitats Directive. Application to Spanish Territories. Sustainability 2019, 11, 398 .
AMA StyleVíctor Rincón, Javier Velázquez, Javier Gutiérrez, Beatriz Sánchez, Ana Hernando, Antonio García-Abril, Tomás Santamaría, Daniel Sánchez-Mata. Evaluating European Conservation Areas and Proposal of New Zones of Conservation under the Habitats Directive. Application to Spanish Territories. Sustainability. 2019; 11 (2):398.
Chicago/Turabian StyleVíctor Rincón; Javier Velázquez; Javier Gutiérrez; Beatriz Sánchez; Ana Hernando; Antonio García-Abril; Tomás Santamaría; Daniel Sánchez-Mata. 2019. "Evaluating European Conservation Areas and Proposal of New Zones of Conservation under the Habitats Directive. Application to Spanish Territories." Sustainability 11, no. 2: 398.
Connectivity loss has been identified as one of the greatest threats to biodiversity, at both the species and ecosystem levels. This study aims to find possible correlations between structural connectivity and faunal richness and landscape diversity in Spain’s largest region, Castilla y León. Based on data provided by the National Biodiversity Inventory and the CORINE Land Cover land-use mapping for 2000 and 2006, species richness was characterized by the number of species occurring in a grid overlaid on the 10 × 10-km-territory. The Shannon Index for land uses was also calculated in each one of the grid cells, providing information on landscape diversity. Structural connectivity was studied using the Morphological Spatial Pattern Analysis, thus providing information on landscape diversity for different edge widths in two different habitat types. Lastly, the analyses showed that there is a slight relationship between structural connectivity and landscape diversity, but not between structural connectivity and faunal richness.
Javier Velázquez; J. Gutiérrez; A. García-Abril; A. Hernando; M. Aparicio; B. Sánchez. Structural connectivity as an indicator of species richness and landscape diversity in Castilla y León (Spain). Forest Ecology and Management 2018, 432, 286 -297.
AMA StyleJavier Velázquez, J. Gutiérrez, A. García-Abril, A. Hernando, M. Aparicio, B. Sánchez. Structural connectivity as an indicator of species richness and landscape diversity in Castilla y León (Spain). Forest Ecology and Management. 2018; 432 ():286-297.
Chicago/Turabian StyleJavier Velázquez; J. Gutiérrez; A. García-Abril; A. Hernando; M. Aparicio; B. Sánchez. 2018. "Structural connectivity as an indicator of species richness and landscape diversity in Castilla y León (Spain)." Forest Ecology and Management 432, no. : 286-297.
Ecological sustainable landscapes require that their ecological processes can be sustained over time. Spatial heterogeneity is recognized as a very influent factor in biological diversity, but there is still a need to evaluate how this heterogeneity changes with scale and how pattern or processes change with the definition of the detail level, so this is the aim of this study. A six level hierarchical land use map, comprising 7244 patches and 646 different land units was generated for the Region of Madrid. We calculated heterogeneity pattern indices, based on information theoretic measures (Shannon diversity index, Evenness) and fractal geometry index. The study area has been the Region of Madrid (8000 Km2) and three partitioning zones (sub-regions or macro-landscapes) of the territory, using vector-based techniques. Territorial diversity is measured and different detail levels are compared from the hierarchical land use map. This analysis could establish the appropriate level of information necessary to reflect significant heterogeneity measurements. The analysis shows that index values rise for each level and for the three studied zones. These values suggest that when the hierarchical classification has an increment in the detail level, the amount of information is broader and explains the spatial heterogeneity results. Zone analysis suggests that the woodland area contribution to Shannon index is higher than for less forested zones. The conclusions drawn are that the regional level is not adequate for territorial diversity evaluation, whenever it contains macro-landscapes and sub-regions with wide physical or land-use differences. Another conclusion is the importance of increasing forest area in agricultural areas or high urban component, to increase landscape diversity. This study allows for a better comprehension of territorial patterns and their meaning. It identifies the most influential land uses to heterogeneity from variations on the territorial pattern diversity, providing a simple and accessible methodology for the study of landscape processes.
J. Velázquez; J. Gutiérrez; A. Hernando; A. García-Abril; M.A. Martín; P. Irastorza. Measuring mosaic diversity based on land use map in the region of Madrid, Spain. Land Use Policy 2018, 71, 329 -334.
AMA StyleJ. Velázquez, J. Gutiérrez, A. Hernando, A. García-Abril, M.A. Martín, P. Irastorza. Measuring mosaic diversity based on land use map in the region of Madrid, Spain. Land Use Policy. 2018; 71 ():329-334.
Chicago/Turabian StyleJ. Velázquez; J. Gutiérrez; A. Hernando; A. García-Abril; M.A. Martín; P. Irastorza. 2018. "Measuring mosaic diversity based on land use map in the region of Madrid, Spain." Land Use Policy 71, no. : 329-334.
A. Hernando; Javier Velázquez; Ruben Valbuena; Mathieu Legrand; A. García-Abril. Influence of the resolution of forest cover maps in evaluating fragmentation and connectivity to assess habitat conservation status. Ecological Indicators 2017, 79, 295 -302.
AMA StyleA. Hernando, Javier Velázquez, Ruben Valbuena, Mathieu Legrand, A. García-Abril. Influence of the resolution of forest cover maps in evaluating fragmentation and connectivity to assess habitat conservation status. Ecological Indicators. 2017; 79 ():295-302.
Chicago/Turabian StyleA. Hernando; Javier Velázquez; Ruben Valbuena; Mathieu Legrand; A. García-Abril. 2017. "Influence of the resolution of forest cover maps in evaluating fragmentation and connectivity to assess habitat conservation status." Ecological Indicators 79, no. : 295-302.
Javier Velázquez; Javier Gutiérrez; Ana Hernando; Antonio García-Abril. Evaluating landscape connectivity in fragmented habitats: Cantabrian capercaillie (Tetrao urogallus cantabricus) in northern Spain. Forest Ecology and Management 2017, 389, 59 -67.
AMA StyleJavier Velázquez, Javier Gutiérrez, Ana Hernando, Antonio García-Abril. Evaluating landscape connectivity in fragmented habitats: Cantabrian capercaillie (Tetrao urogallus cantabricus) in northern Spain. Forest Ecology and Management. 2017; 389 ():59-67.
Chicago/Turabian StyleJavier Velázquez; Javier Gutiérrez; Ana Hernando; Antonio García-Abril. 2017. "Evaluating landscape connectivity in fragmented habitats: Cantabrian capercaillie (Tetrao urogallus cantabricus) in northern Spain." Forest Ecology and Management 389, no. : 59-67.
Ana Hernando; Lara A. Arroyo; Javier Velázquez; Rosario Tejera. Objects-based Image Analysis for Mapping Natura 2000 Habitats to Improve Forest Management. Photogrammetric Engineering & Remote Sensing 2012, 78, 991 -999.
AMA StyleAna Hernando, Lara A. Arroyo, Javier Velázquez, Rosario Tejera. Objects-based Image Analysis for Mapping Natura 2000 Habitats to Improve Forest Management. Photogrammetric Engineering & Remote Sensing. 2012; 78 (9):991-999.
Chicago/Turabian StyleAna Hernando; Lara A. Arroyo; Javier Velázquez; Rosario Tejera. 2012. "Objects-based Image Analysis for Mapping Natura 2000 Habitats to Improve Forest Management." Photogrammetric Engineering & Remote Sensing 78, no. 9: 991-999.
Victoria Núñez; Ana Hernando; Javier Velázquez; Rosario Tejera. Livestock management in Natura 2000: A case study in a Quercus pyrenaica neglected coppice forest. Journal for Nature Conservation 2012, 20, 1 -9.
AMA StyleVictoria Núñez, Ana Hernando, Javier Velázquez, Rosario Tejera. Livestock management in Natura 2000: A case study in a Quercus pyrenaica neglected coppice forest. Journal for Nature Conservation. 2012; 20 (1):1-9.
Chicago/Turabian StyleVictoria Núñez; Ana Hernando; Javier Velázquez; Rosario Tejera. 2012. "Livestock management in Natura 2000: A case study in a Quercus pyrenaica neglected coppice forest." Journal for Nature Conservation 20, no. 1: 1-9.
The urban canopy is a very valuable element in cities, and its environmental benefits are significant. It is very important for cities to assess adequately their canopy. An important part of its value is related to the tree number density according to the population density. The most commonly used methods for tree appraisal use subjective means to obtain the influence of location. A new methodology is developed in this work to obtain an objective location index. The proposed index gives a value to the tree according to its location in the city. A multiple regression model (function of the canopy density per inhabitant and the urban area percentage) is used to calculate the location index. The index has been calculated for the neighborhoods of the city of Santiago del Estero, Argentina, but can be applied to any city with objective variables, available from any local administration.
Esperanza Ayuga-Téllez; María Lucrecia Contato-Carol; Concepcion Gonzalez; María Ángeles Grande-Ortiz; Javier Velázquez. Applying Multivariate Data Analysis as Objective Method for Calculating the Location Index for Use in Urban Tree Appraisal. Journal of Urban Planning and Development 2011, 137, 230 -237.
AMA StyleEsperanza Ayuga-Téllez, María Lucrecia Contato-Carol, Concepcion Gonzalez, María Ángeles Grande-Ortiz, Javier Velázquez. Applying Multivariate Data Analysis as Objective Method for Calculating the Location Index for Use in Urban Tree Appraisal. Journal of Urban Planning and Development. 2011; 137 (3):230-237.
Chicago/Turabian StyleEsperanza Ayuga-Téllez; María Lucrecia Contato-Carol; Concepcion Gonzalez; María Ángeles Grande-Ortiz; Javier Velázquez. 2011. "Applying Multivariate Data Analysis as Objective Method for Calculating the Location Index for Use in Urban Tree Appraisal." Journal of Urban Planning and Development 137, no. 3: 230-237.
Conservation and enhancement of ecological connectivity is widely recognized as one of the key objectives of forest landscape management. However, practical difficulties still exist due to the lack of pragmatic and operational methodologies that can be efficiently applied for these purposes within the scope of a forest management plan. Here we present the novel integration of two recent approaches for analyzing forest structural connectivity that offers considerable synergies and potential relevant benefits for forest planning at a variety of scales. We combine the morphological analysis of forest spatial patterns with recent indices for the analysis of landscape network connectivity based on the concept of measuring habitat availability (reachability) at the landscape scale. The combination of these approaches in a single integrated workflow embraces from (1) the diagnosis and characterization at the pixel level of the forest spatial patterns and their individual constituents, which are mainly the core habitat areas and the structural connectors (bridges) between them, to (2) the assessment of their individual importance to uphold ecological fluxes as irreplaceable providers of structural connectivity. We present and show different analytical possibilities within the integrated workflow from where the manager can choose depending on the planning targets and on the characteristics of the ecological processes of interest. We illustrate the application of the combined approach in two forested areas in Central Spain with different scales and management contexts, in which the structural connectivity between forest habitat areas needs to be sustained. Our assessment was able to discriminate and highlight a concise subset of cores and bridges that concentrated most of the contribution to the overall connectivity and functioning of the forest habitat network. This provides clear guidelines on where the conservation management efforts should be targeted, allowing for many alternative areas where the rest of the management objectives and activities can be accommodated as required by the multifunctionality of forest resources. The proposed integrated approach can equally serve to identify (a) those forest areas that play a crucial role to sustain ecological fluxes that are to be promoted by management, such as the dispersal of native biota or (b) those sites where the spread of wildfires or invasive species can be halted more effectively. The potential of the proposed methodology to inform and guide forestry decisions is reinforced by the availability of the required analytical tools (Guidos and Conefor Sensinode) as freeware software packages.
Santiago Saura; Peter Vogt; Javier Velázquez; Ana Hernando; Rosario Tejera. Key structural forest connectors can be identified by combining landscape spatial pattern and network analyses. Forest Ecology and Management 2011, 262, 150 -160.
AMA StyleSantiago Saura, Peter Vogt, Javier Velázquez, Ana Hernando, Rosario Tejera. Key structural forest connectors can be identified by combining landscape spatial pattern and network analyses. Forest Ecology and Management. 2011; 262 (2):150-160.
Chicago/Turabian StyleSantiago Saura; Peter Vogt; Javier Velázquez; Ana Hernando; Rosario Tejera. 2011. "Key structural forest connectors can be identified by combining landscape spatial pattern and network analyses." Forest Ecology and Management 262, no. 2: 150-160.
The conservation of biodiversity in Europe is defined by Directive 92/43/EEC – commonly known as the Habitats Directive – relating to the conservation of natural habitats and of wild flora and fauna. This Directive established the creation of an ecological network of European protected areas – the Natura 2000 network – , and also recognised the need to manage these areas to maintain their “favourable conservation status”. This paper proposes a methodology which enables the conservation of biodiversity to be integrated into the management of Natura 2000 forest spaces. The methodology comprises an “environmental diagnosis” in three phases. The first phase evaluates the current conservation status of habitats using the following criteria: vital functions; floristic richness; forest structure; area occupied by the habitat; and recovery capacity. The second phase assesses the fragility of the space to determine the degree of vulnerability of habitats. This involves evaluating the fire hazard, erosion hazard, and the fragility of the vegetation. The last phase combines the two previous ones to generate management areas (optimum, intermediate or unfavourable) and to prioritise management actions. This methodology was applied in a protected forest area in the Natura 2000 network, located in Avila (Spain). Different management areas were generated for biodiversity conservation, and each habitat was associated to one of them. Finally, actions were prioritised and designed to raise the habitats to a “favourable conservation status”.
Javier Velázquez; Rosario Tejera; Ana Hernando; María Victoria Núñez. Environmental diagnosis: Integrating biodiversity conservation in management of Natura 2000 forest spaces. Journal for Nature Conservation 2010, 18, 309 -317.
AMA StyleJavier Velázquez, Rosario Tejera, Ana Hernando, María Victoria Núñez. Environmental diagnosis: Integrating biodiversity conservation in management of Natura 2000 forest spaces. Journal for Nature Conservation. 2010; 18 (4):309-317.
Chicago/Turabian StyleJavier Velázquez; Rosario Tejera; Ana Hernando; María Victoria Núñez. 2010. "Environmental diagnosis: Integrating biodiversity conservation in management of Natura 2000 forest spaces." Journal for Nature Conservation 18, no. 4: 309-317.
The main goal of Natura 2000 network is to guarantee the favourable conservation status of habitats and species ensuring European biodiversity. As a result, certain forest areas have been included in this network listed as 9230-Quercus pyrenaica habitat and 9340-Quercus ilex subsp. rotundifolia forest habitat. These areas were previously used for firewood extraction or livestock grazing and browsing. Nowadays these habitats are coppice forests with asexual regeneration, which is far from the desired conservation status. Traditional timber harvesting plans do not take account of the new objectives required for these Natura sites, which attempt to ensure biodiversity and recreational uses instead of simply focusing on timber production. This paper proposes a flexible methodology (applied to the study area “Dehesa Boyal” in Ávila, Spain) for managing Natura 2000 forest sites by stands for sustainable forest management and the new requirements. The methodology has two phases. The first, “Division of the forest area into stands”, defines homogeneous patches of vegetation distinct in species composition, physiognomic structure and future management. The second, “Conservation status assessment of stands”, quantifies the conservation status of each previously classified stand considering a series of factors such as: functional health, restoration, floral richness and structure. A total value integrating the conservation status of stands is then calculated for the habitat. Both phases use Geographic Information System tools for managing information and visualizing results. The proposed methodology provides forest managers with a good knowledge of the territory and subsequently enables them to take appropriate conservation measures to maintain biodiversity.
Ana Hernando; Rosario Tejera; Javier Velázquez; María Victoria Núñez. Quantitatively defining the conservation status of Natura 2000 forest habitats and improving management options for enhancing biodiversity. Biodiversity and Conservation 2010, 19, 2221 -2233.
AMA StyleAna Hernando, Rosario Tejera, Javier Velázquez, María Victoria Núñez. Quantitatively defining the conservation status of Natura 2000 forest habitats and improving management options for enhancing biodiversity. Biodiversity and Conservation. 2010; 19 (8):2221-2233.
Chicago/Turabian StyleAna Hernando; Rosario Tejera; Javier Velázquez; María Victoria Núñez. 2010. "Quantitatively defining the conservation status of Natura 2000 forest habitats and improving management options for enhancing biodiversity." Biodiversity and Conservation 19, no. 8: 2221-2233.
Calcareous amendments are being used in Tuber melanosporum truffle plantations in attempts to eradicate Tuber brumale. However, there are no studies available which provide soil analysis and statistical data on this topic. We studied 77 soil samples to compare the values for carbonates, pH and total organic carbon in T. brumale truffières with the values for T. melanosporum truffières on contaminated farms and in natural areas. Statistical analyses indicate that the concentrations of active carbonate and total carbonate in the soil are significantly higher in T. brumale truffières than in T. melanosporum truffières, but that there are no significant differences in pH and total organic carbon. We conclude that liming would not suppress T. brumale ectomycorrhizas in contaminated T. melanosporum farms, and calcareous amendments do not therefore seem be a means of eradicating T. brumale in these farms.
Maria Inmaculada Valverde Asenjo; Luis G. García-Montero; Asunción Quintana; Javier Velázquez. Calcareous amendments to soils to eradicate Tuber brumale from T. melanosporum cultivations: a multivariate statistical approach. Mycorrhiza 2009, 19, 159 -165.
AMA StyleMaria Inmaculada Valverde Asenjo, Luis G. García-Montero, Asunción Quintana, Javier Velázquez. Calcareous amendments to soils to eradicate Tuber brumale from T. melanosporum cultivations: a multivariate statistical approach. Mycorrhiza. 2009; 19 (3):159-165.
Chicago/Turabian StyleMaria Inmaculada Valverde Asenjo; Luis G. García-Montero; Asunción Quintana; Javier Velázquez. 2009. "Calcareous amendments to soils to eradicate Tuber brumale from T. melanosporum cultivations: a multivariate statistical approach." Mycorrhiza 19, no. 3: 159-165.