Listar DIF-Artículos, capítulos... por autor "1da21693-f867-4469-ad07-a1564d129c37"
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A Novel Methodology to Estimate Single-Tree Biophysical Parameters from 3D Digital Imagery Compared to Aerial Laser Scanner Data
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Romero Ramírez, Francisco J.; Hornero, Alberto; Zarco-Tejada, Pablo J. (MDPI, 2014)Airborne laser scanner (ALS) data provide an enhanced capability to remotely map two key variables in forestry: leaf area index (LAI) and tree height (H). Nevertheless, the cost, complexity and accessibility of this ... -
Analysis of postfire vegetation dynamics of Mediterranean shrub species based on terrestrial and NDVI data
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Hernández Bermejo, Esteban; Escuin Royo, S.; Kasimis, N. (SpringerLink, 2009)The present study offers an analysis of regeneration patterns and diversity dynamics after a wildfire, which occurred in 1993 and affected about 7000 ha in southern Spain. The aim of the work was to analyze the rule in the ... -
Assessing structural effects on PRI for stress detection in conifer forests
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Suárez, L.; Morales, Fermín; Zarco-Tejada, Pablo J. (Science Direct, 2011)The retrieval of indicators of vegetation stress from remote sensing imagery is an important issue for the accurate assessment of forest decline. The Photochemical Reflectance Index (PRI) has been demonstrated as a ... -
Assessing the contribution of understory sun-induced chlorophyll fluorescence through 3-D radiative transfer modelling and field data
Hornero, Alberto; North, P. R. J.; Zarco-Tejada, Pablo J.; Rascher, U.; Martín, M.P.; Migliavacca, M.; Hernández Clemente, Rocío (Science Direct, 2021)A major international effort has been made to monitor sun-induced chlorophyll fluorescence (SIF) from space as a proxy for the photosynthetic activity of terrestrial vegetation. However, the effect of spatial heterogeneity ... -
Assessing the effects of forest health on sun-induced chlorophyll fluorescence using the FluorFLIGHT 3-D radiative transfer model to account for forest structure
Hernández Clemente, Rocío; North, P. R. J.; Hornero, Alberto; Zarco-Tejada, Pablo J. (Science Direct, 2017)Sun-induced fluorescence (SIF) has been proven to serve as a proxy of photosynthesis activity and therefore, as an early indicator of physiological alterations for global monitoring of vegetation. However, the interpretation ... -
Caracterización de la situación posincendio en el área afectada por el incendio de 2005 en el Parque Nacional de Torres del Paine (Chile) a partir de imágenes multiespectrales
Navarro Cerrillo, Rafael M.; Hayas, Antonio; García-Ferrer Porras, Alfonso; Hernández Clemente, Rocío; Duhalde, Pamela; González, Luis (Sociedad de Biología de Chile, 2008)El uso de sensores remotos para la evaluación de la severidad es una de los aspectos más importantes en el estudio de grandes incendios, así como la aplicación de los resultados para el proceso de restauración. En este ... -
Carotenoid content estimation in a heterogeneous conifer forest using narrow-band indices and PROSPECT + DART simulations
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Zarco-Tejada, Pablo J. (Science Direct, 2012)The present study explored the use of narrow-band indices formulated in the visible spectral region at leaf and canopy levels to estimate carotenoid content. The research area was a pine forest affected by decline processes. ... -
Deriving predictive relationships of carotenoid content at the canopy level in a conifer forest using hyperspectral imagery and model simulation
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Zarco-Tejada, Pablo J. (IEEE, 2014)Recent studies have demonstrated that the R570/R515 index is highly sensitive to carotenoid (Cx + c) content in conifer forest canopies and is scarcely influenced by structural effects. However, validated methods for the ... -
Divergent abiotic spectral pathways unravel pathogen stress signals across species
Zarco-Tejada, Pablo J; Poblete, T.; Camino, C.; González-Dugo, Victoria; Calderón, R.; Hornero, Alberto; Hernández Clemente, Rocío; Román-Écija, M.; Velasco-Amo, P.; Landa, Blanca B.; Beck, P. S. A.; Saponari, M.; Boscia, D.; Navas-Cortés, J. A. (Springer Nature, 2021)Plant pathogens pose increasing threats to global food security, causing yield losses that exceed 30% in food-deficit regions. Xylella fastidiosa (Xf) represents the major transboundary plant pest and one of the world’s ... -
Early diagnosis of vegetation health from high-resolution hyperspectral and thermal imagery: lessons learned from empirical relationships and radiative transfer modelling
Hernández Clemente, Rocío; Hornero, Alberto; Möttus, Matti; Penuelas, J.; González Dugo, V.; Jiménez, J. C.; Suárez, L.; Alonso, L.; Zarco-Tejada, Pablo J. (Springer, 2019)Purpose of Review We provide a comprehensive review of the empirical and modelling approaches used to quantify the radiation–vegetation interactions related to vegetation temperature, leaf optical properties linked to ... -
Estimating leaf carotenoid content in vineyards using high resolution hyperspectral imagery acquired from an unmanned aerial vehicle (UAV)
Zarco-Tejada, Pablo J.; Guillén Climent, M. Luz; Hernández Clemente, Rocío; Catalina, A.; González, M. R.; Martín, Pilar (Science Direct, 2013)Chlorophyll a+b (Ca+b) and carotenoids (Cx+c) are leaf pigments associated with photosynthesis, participation in light harvesting and energy transfer, quenching and photoprotection. This manuscript makes progress on ... -
Evaluating models to assess the distribution of Buxus balearica in southern Spain
Navarro Cerrillo, Rafael M.; Hernández Bermejo, Esteban; Hernández Clemente, Rocío (Wiley, 2010)uestion: Which is the best model to predict the habitat distribution of Buxus balearica Lam. in southern Spain? Location: Málaga and Granada, Spain, across an area of 38 180 km2. Methods: Prediction models based on ... -
Evaluation of the Harvest of Prunus africana Bark on Bioko (Equatorial Guinea): Guidelines for a Management Plan
Clemente Muñoz, M.A.; Navarro Cerrillo, Rafael M.; Kasimis, N.; Hernández Bermejo, Esteban; Padrón Cedrés, E.; Martín-Consuegra, Enriqueta; Hernández Clemente, Rocío; García-Ferrer Porras, Alfonso (Servicio de Publicaciones Universidad de Córdoba, 2006)En esta obra se aborda el estado de Prunus africana como consecuencia de la extracción a la que ha estado sometida esta especie durante el periodo (1996-2004) debido a la demanda internacional de productos derivados de la ... -
Global ecosystem thresholds driven by aridity
Berdugo, Miguel; Delgado-Baquerizo, Manuel; Soliveres, Santiago; Hernández Clemente, Rocío; Zhao, Yuan-Yuan; Gaitán, Juan J.; Gross, Nicolas; Saiz, Hugo; Maire, Vicent; Lehmann, Anika; Rillig, Matthias C.; Solé, Ricardo V.; Maestre, Fernando T. (American Association for the Advancement of Science, 2020)Aridity, increasing worldwide due to climate change, affects the structure and functioning of dryland ecosystems. Whether aridification leads to gradual (vs. abrupt) and systemic (vs. specific) ecosystem changes is largely ... -
Global monitoring of soil multifunctionality in drylands using satellite imagery and field data
Hernández Clemente, Rocío; Hornero, Alberto; González Dugo, V.; Berdugo, Miguel; Quero, José L.; Jiménez, J. C.; Maestre, Fernando T. (Zoological Society of London, 2023)Models derived from satellite image data are needed to monitor the status of terrestrial ecosystems across large spatial scales. However, a remote sensing-based approach to quantify soil multifunctionality at the global ... -
Hyperspectral and multispectral satellite sensors for mapping chlorophyll content in a Mediterranean Pinus sylvestris L. plantation
Navarro Cerrillo, Rafael M.; Trujillo, J.; Sánchez de la Orden, Manuel; Hernández Clemente, Rocío (Science Direct, 2014)A new generation of narrow-band hyperspectral remote sensing data offers an alternative to broad-band multispectral data for the estimation of vegetation chlorophyll content. This paper examines the potential of some of ... -
In situ measurement of Scots pine needle PRI
Möttus, Matti; Hernández Clemente, Rocío; Perheentupa, Viljami; Markiet, Vincent (BMC, 2017)Background: The Photochemical Reflectance Index (PRI) calculated from narrow-band spectral reflectance data is a vegetation index which is increasingly used as an indicator of photosynthetic activity. The leaf-level link ... -
LIDAR-based estimation of leaf area index on Holm oak [Quercus ilex L. subsp. ballota (Desf.) Samp.] trees
Navarro Cerrillo, Rafael M.; Sanchez de la Orden, M.; Gómez Bonilla, J.; García-Ferrer Porras, Alfonso; Hernández Clemente, Rocío; Lanjeri, S. (CSIC, 2010)Index (LAI) of Quercus ilex by calculating the laser-intercepted rate through the forest canopy using LiDAR data. LAI was measured in 40 trees with a hemispheric camera (NIKON Coolpix 4500) and coincided with the acquisition ... -
Modelling hyperspectral- and thermal-based plant traits for the early detection of Phytophthora-induced symptoms in oak decline
Hornero, Alberto; Zarco-Tejada, Pablo J.; Quero, José L.; North, P. R. J.; Ruiz Gómez, Francisco José; Sánchez de la Cuesta, Rafael; Hernández Clemente, Rocío (Science Direct, 2021)Holm oak decline is a complex phenomenon mainly influenced by the presence of Phytophthora cinnamomi and water stress. Plant functional traits (PTs) are altered during the decline process — initially affecting the physiological ... -
Monitoring post-fire regeneration in Mediterranean ecosystems by employing multitemporal satellite imagery
Hernández Clemente, Rocío; Navarro Cerrillo, Rafael M.; Gitas, Ioannis Z. (CSIRO PUBLISHING, 2009)Fire-damaged ecosystems have often been monitored by applying a combination of field survey information and vegetation indices derived from remotely sensed data. Furthermore, it has been demonstrated that remotely sensed ...