Thomas Schmid

Thomas Schmid
Ciemat-Centro Investigaciones Energéticas, Medioambientales Y Tecnológicas | CIEMAT · Environment

About

91
Publications
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Introduction
My interests are characterizing and monitoring soil processes and land cover changes that lead to soil degradation as a result of human-induced activities and conserving mountain and wetland ecosystems within semi-arid and arid regions as well as studying periglacial processes within ice free areas of the Northern Antarctic Peninsula region. I am using proximal and remote sensing techniques implementing optical and synthetic aperture radar data at the field, airborne and satellite-borne scale.

Publications

Publications (91)
Article
Studying the magnetic fabric in volcanic edifices, particularly lava flows from recent eruptions, allows us to understand the orientation distribution of the minerals related to the flow direction and properly characterize older and/or eroded flows. In this work, the magnetic fabric from recent (Quaternary) lava flows (slightly inclined in seven si...
Article
There are many studies on the beneficial effects of silicon (Si) in plants related to a decrease of stress (biotic/abiotic). The objective of the present work was to study how plant-available Si in highly calcareous soil with different soil chemical properties, amendments and growing conditions can affect Si absorption by Hordeum vulgare L. (Barley...
Article
Full-text available
Rainfed agriculture occupies the majority of the world's agricultural surface and is expected to increase in the near future causing serious effects on carbon cycle dynamics in the context of climate change. Carbon cycle across several temporal and spatial scales could be studied through spectral indices because they are related to vegetation struc...
Article
Microorganisms play a key role in the carbon (C) cycle through soil organic matter (SOM). The rate of SOM mineralization, the influence of abiotic factors on this rate and the potential behaviour of SOM are of particular interest in the northern Antarctic Peninsula and offshore islands. This is one of the most rapidly warming regions on Earth with...
Technical Report
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The Maritime Antarctic and its off shore Islands are one of the places that have increased their annual temperature in the last 6 decades in the Antarctic continent. As a result of this increase in temperature, a series of consequences that can alter Antarctic ecosystems are derived. It is for this reason, that an analysis of the mineralization rat...
Article
Full-text available
There is a renewed awareness of the finite nature of the world’s soil resources, growing concern about soil security and significant uncertainties about the carrying capacity of the planet. Regular assessments of soil conditions from local through to global scales are requested, and there is a clear demand for accurate, up-to-date and spatially ref...
Article
Tools that enhance the management of the soil resource are vital for sustainability and continued productivity. The assessment and monitoring of surface-soil condition provide key information required to effectively manage this resource. This research used a simulated Environmental Mapping and Analysis Program (EnMAP) hyperspectral image cube of an...
Article
During the next decade it will be necessary to develop novel combinations of management strategies to sustainably increase crop production and soil resilience. Improving agricultural productivity, while conserving and enhancing biotic and abiotic resources, is an essential requirement to increase global food production on a sustainable basis. The r...
Conference Paper
Full-text available
The European INTENSE project is responding to three “Great Challenges”: global food security, use of renewable raw materials and production of energy from biomass. Its contributes to reconvert poor, abandoned and polluted lands, e.g. grassland, set aside land, brownfields, and other marginal lands, into high, sustainable crop production. INTENSE si...
Article
Full-text available
Experiments employing free-air CO2 enrichment (FACE) facilities have indicated that elevated atmospheric carbon dioxide (eCO2) stimulates growth in diverse terrestrial ecosystems. Studies of the effects of eCO2 on wetland plants have indicated a similar response, but these studies were mostly performed in growth chambers. We conducted a 2-year FACE...
Research
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Welcome to the fifth newsletter of the EU INTENSE project. This newsletter series provides you with updated information on our project progress, achievements and important forthcoming activities related to the reconversion of poor, degraded, abandoned and polluted sites including grassland, set aside land, brownfields, and otherwise marginal lands...
Research
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This course aims to give an overview of applied research for a sustainable and ecologically compatible land use and approaches needed to restore degraded or marginal land. Registration (Maximum 25 students): To: Ana García Triviño (Course Secretary) Formación en Energía y Medio Ambiente – CIEMAT Avenida Complutense 40 – MADRID 28040 (Spain) Phone:...
Article
Full-text available
Plant and community traits provide valuable insights in ecosystem functioning. Yet, such traits are costly to sample. Existing trait data bases give access to species-specific traits and help to reduce the sampling effort and costs. However, many traits show a high intra-specific plasticity due to the variability of environmental conditions, which...
Article
Full-text available
The rapid increase of the world population constantly demands more food production from agricultural soils. This causes conflicts, since at the same time strong interest arises on novel bio-based products from agriculture, and new perspectives for rural landscapes with their valuable ecosystem services. Agriculture is in transition to fulfill these...
Chapter
This chapter focuses on the use of optical remote sensing in the wavelength domain of visible and near infrared and shortwave infrared. It gives an overview of the principal issues concerning the use of these techniques for soil mapping and monitoring, including different spectral (multispectral and hyperspectral data) and spatial scales (laborator...
Article
Satellite-borne Synthetic Aperture Radar (SAR) has been used for characterizing and mapping in two relevant ice-free areas in the South Shetland Islands. The objective has been to identify and characterize land surface covers that mainly include periglacial and glacial landforms, using fully polarimetric SAR C band RADARSAT-2 data, on Fildes Penins...
Article
Ice-free areas cover a small percentage of the land in the South Shetland Islands. However, they are significant as they contain ecosystems highly sensitive to environmental changes and are located within a region affected by global warming. These areas are dominated by periglacial, glacial, fluvial, and coastal processes and landforms, where perma...
Conference Paper
Full-text available
Mediterranean mountain ecosystems are often complex and remarkably diverse and are seen as important sources of biological diversity. They play a key role in the water and sediment cycle for lowland regions as well as preventing and mitigating natural hazards especially those related to drought such as fire risk. However, these ecosystems are fragi...
Conference Paper
In this paper, we describe a new approach to analyse and quantify land surface covers on Deception Island, a volcanic island located in the Northern Antarctic Peninsula region by means of fully polarimetric RADARSAT-2 (C-Band) SAR image. Data have been filtered by a new polarimetric speckle filter (PolSAR-BLF) that is based on the bilateral filter....
Article
Full-text available
Elephant Island, located in the vicinity of the present-day active boundary of the South Shetland Block and the Antarctic and Scotia plates, is a region of particular interest for understanding the past and present geodynamic evolution of the southern Scotia Arc. Lineament from different data sources, field-measured fractures and geomorphological e...
Article
A quantitative geomorphic analysis of the drainage system on Byers Peninsula, Livingston Island, has been carried out in order to study the relief evolution, glacial history and possible neotectonic influence on the largest ice-free area of the South Shetlands archipelago. Aerial photographs, SAR data from RADARSAT-2 satellite, field work, a digita...
Article
Full-text available
The aim of this work is the application of ex situ lysimeter experiments containing undisturbed soil monoliths to determine the behaviour of mercury within the soil plant system. These experiments under close-to-real conditions were instrumented with a set of electrodes and sensors to monitor physical and chemical parameters of soil and were sown w...
Chapter
Full-text available
In situ chemical oxidation (ISCO) is an effective technology for the cleanup of contaminated sites by organic compounds, such as hydrocarbons. Such remediation involves the introduction of a chemical oxidant into the subsurface in order to transform organic pollutants, present in groundwater or soil, into less harmful chemical species. Commonly app...
Conference Paper
Full-text available
This research focuses on a semi-arid, agricultural area in Central Spain near Madrid, in which airborne hyperspectral images have been obtained. Small-scale soil erosion features are exposed at the surface as a consequence of human induced soil erosion derived mainly from tillage practice. Such features are associated with different soil horizons a...
Article
The aim of the present study is to improve the knowledge on the role of riparian vegetation in Hg removal along Valdeazogues River that is located within the old mercury mining district of Almadén (Ciudad Real, Spain). In this framework, the accumulation of Hg in the aerial part of five different riparian plant species (three riparian shrubs: Flueg...
Conference Paper
Full-text available
The development of technologies for mitigating or removing mercury in aquatic ecosystems has been increasing throughout years. Some of these rely on the use of macrophytes as technique to remedy areas affected by heavy metals, and for that reason, numerous tests have carried out in laboratories based on phytoextraction and rhizofiltration processes...
Conference Paper
Full-text available
Prolonged mercury mining activities within the Almadén area (SW Spain) has affected the surrounding ecosystems. This includes components such as soils that are one of the prime receptors affected by these activities. Over time Hg contamination will accumulate in the different soil horizons depending on their composition. The Hg contamination of the...
Article
Full-text available
The aim of the work is to evaluate the spatial distribution of Hg in the soil-plant system within an area where intense activity of Hg was dominant over a long period. An abandoned metallurgical plant from the 17th-18th centuries was chosen as the study area. It is situated in Almadenejos within the Almaden mining district (Spain) that constitutes...
Article
Full-text available
The Almadén area in Spain has a long history of mercury mining with prolonged human-induced activities that are related to mineral extraction and metallurgical processes before the closure of the mines and a more recent post period dominated by projects that reclaim the mine dumps and tailings and recuperating the entire mining area. Furthermore, s...
Article
Full-text available
This paper aims to estimate the seasonality of forest fires and their annual anomalies from the FPI risk index in Navarra (Spain) during the period 2001 - 2008. The aim of this analysis is to investigate whether the fire risk dynamics follows a stable pattern adjusted to the fire campaign, and if its study allows a better adaptation of the fire cam...
Article
The Almadén mining district (Spain) is a singular case of natural mercury concentration in the World. The intensive mining activities during the last two thousand years have caused a dispersion and remobilization of mercury within the area. This has generated interactions between soil and mercury as well as the incorporation of this trace element i...
Conference Paper
In a Mediterranean semiarid area in Central Spain, with dominant rainfed agriculture, hyperspectral airborne data, supported by field spectroscopy have been obtained, allowing a spectral identification of bare soil with the corresponding erosion stages. The definition of soil erosion stages is based on a spectral characterization supported by morph...
Article
RADARSAT-2 data in the ultra-fine and fine quad polarization mode was evaluated to identify morphostructural, periglacial, and other geomorphological features within the Antarctic Peninsula region. The study was carried out within Byers Peninsula, the largest ice-free area on the South Shetland Islands. A methodology was developed to integrate and...
Article
Full-text available
Semi-arid wetlands are very dynamic ecosystems as the different characteristics (areal extension, water depth and salinity, seasonal flooding, vegetation and fauna) that define them vary greatly in the short and long term. The objective of this work is to evaluate the contributions of Radarsat-2 (C-band) and ALOS PALSAR (L-band) full polarimetric d...
Article
Periglacial processes and landforms together with the presence of permafrost are among the most relevant geomorphological elements in the northern Antarctic Peninsula region. Their distribution affects the hydrology and has consequences for the ecosystems of the ice-free areas. In this paper a compilation of the different types of periglacial landf...
Article
Full-text available
Experimental work was carried out under close-to-real conditions to study mercury uptake by Hordeum vulgare L. cultivated in lysimeter experiments. The soil in the lysimeter experiment was obtained from a test plot located near Almadén (Spain) and had a mean mercury content of 22.9 mg kg(-1). A sequence of four crops was sown starting in autumn 200...
Article
Almadén, Spain, has the most important known cinnabar deposits, which have provided a third of the entire world production of Hg, and has been the scene for numerous studies on Hg. This mining district includes several mines where cinnabar has been extracted in the past two millennia as well as facilities related to the production of primary Hg. Th...
Article
Full-text available
At present, hyperspectral images are mainly obtained with airborne sensors that are subject to turbulences while the spectrometer is acquiring the data. Therefore, geometric corrections are required to produce spatially correct images for visual interpretation and change detection analysis. This paper analyzes the data acquisition process of airbor...
Article
Semiarid wetlands are very dynamic ecosystems as the different characteristics (areal extension, water depth and salinity, seasonal flooding, vegetation and fauna) that define them vary greatly in the short and long term. The objective of this work is the incorporation of ALOS PALSAR and AVNIR2 data within ongoing work for a semi-arid wetland area...
Article
This paper deals with the application of ALOS microwave PALSAR and Landsat ETM+ optical data in the study of glacial and periglacial features as well as morphostructural features in a selected area in Livingston Island which lies in the South Shetland Islands of the northern Antarctic Peninsula region. Polar Regions are key areas in the study of th...
Article
The primary aim of this paper is to determine the spatial distribution of soil surface properties using high and medium resolution imagery data. Identification of these properties is important for determining environmental conditions resulting from anthropogenic influences, and for identifying land degradation processes within the study area which...
Conference Paper
Full-text available
The largest mercury concentration is situated in Almaden, Spain. Mining activities have dominated in the region till the closure of the mines in 2002 and alternative land use has gained importance after the mining activities ceased. The rehabilitation of areas affected by the mining are the main priority within the region. The objective is to ident...
Data
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CONCLUSIONS This study represents the first image-based lithologic and pedologic characterization of the greater Aksum area. Our goal is to map the physical environment of this region in order to understand the dynamics of human-environment relationships in Aksumite times, and to understand how the impact of human activities has affected the evolut...
Article
Mercury uptake and its distribution in Vicia sativa (common vetch) was studied at two different study scales, greenhouse conditions and lysimeter experiments. The soil employed for the experiments belong to a study site located near Almadén in the Southwest of Spain. This area constitutes the biggest and the oldest mercury mining area in the world....
Conference Paper
Full-text available
The National Park of Las Tablas de Daimiel (Central Spain) is a semi-arid wetland included in the UNESCO Man and Biosphere Reserve and Ramsar Convention in 1981 and 1982. The wetland is very important with respect to biodiversity and wildlife habitats essential for migratory movements and wintering of water fowl in the south of Europe. The work det...
Conference Paper
Full-text available
This paper deals with the application of ALOS microwave and Landsat optical data in the study of glacial and periglacial features as well as morphostructural features in a selected area in Livingston Island which lies in the South Shetland Islands of the northern Antarctic Peninsula region. Polar Regions are key areas in the study of the Earth Syst...
Article
Wetlands in semi-arid regions of Central Spain can undergo extreme changes from the wet to the dry season and the anthropogenic influences are a major concern in maintaining these natural ecosystems in the future. The objective of this work is to apply multi-sensor data to determine and monitor characteristics of semi-arid wetlands within Central S...
Conference Paper
Soils in semi-arid regions of Spain are especially susceptible to soil degradation processes due to natural as well as human-induced land use/cover changes. The result is a decline in the capacity of the soil to perform environmental regulatory functions and yield agricultural goods. A multisensor and multiscale approach is presented in this work t...
Article
Full-text available
La comarca de Almadén ha estado marcada por la actividad minera de extracción de Hg desde hace más de 2.000 años. En la actualidad, el cierre de las minas plantea la necesidad de un cambio de uso del suelo para mantener la actividad económica de la zona. Este trabajo resume las distintas estrategias estudiadas para la rehabilitación y propuesta de...
Article
Full-text available
La comarca de Almadén ha estado marcada por la actividad minera de extracción de Hg desde hace más de 2.000 años. En la actualidad, el cierre de las minas plantea la necesidad de un cambio de uso del suelo para mantener la actividad económica de la zona. Este trabajo resume las distintas estrategias estudiadas para la rehabilitación y propuesta de...
Article
The Almadén area is an exceptional case of mercury concentration in the world, where cinnabar is the predominant mineralised form. Mining activities have been carried out over the past two thousand years and once this activity is concluded, a restoration of the environment is necessary for the affected areas. That implies the selection, optimisatio...
Article
The Almadén area is an exceptional case of mercury concentration in the world, where cinnabar is the predominant mineralised form. Mining activities have been carried out over the past two thousand years and once this activity is concluded, a restoration of the environment is necessary for the affected areas. That implies the selection, optimisatio...