Impacts of global change on iberian forest ecosystems inferred from the spanish national forest inventory = Impactos del cambio global en ecosistemas forestales ibéricos a partir del inventario forestal nacional

Los efectos del cambio global sobre los bosques son una de las grandes preocupaciones de la sociedad del siglo XXI. Algunas de sus posibles consecuencias como son los efectos en la producción, la sostenibilidad, la pérdida de biodiversidad o cambios en la distribución y ensamblaje de especies forestales pueden tener grandes repercusiones sociales, ecológicas y económicas. La detección y seguimiento de estos efectos constituyen uno de los retos a los que se enfrentan en la actualidad científicos y gestores forestales. En base a la comparación de series históricas del Inventario Forestal Nacional Español (IFN), esta tesis trata de arrojar luz sobre algunos de los impactos que los cambios socioeconómicos y ambientales de las últimas décadas han generado sobre nuestros bosques. En primer lugar, esta tesis presenta una innovadora metodología con base geoestadística que permite la comparación de diferentes ciclos de inventario sin importar los diferentes métodos de muestreo empleados en cada uno de ellos (Capítulo 3). Esta metodología permite analizar cambios en la dinámica y distribución espacial de especies forestales en diferentes gradientes geográficos. Mediante su aplicación, se constatarán y cuantificarán algunas de las primeras evidencias de cambio en la distribución altitudinal y latitudinal de diferentes especies forestales ibéricas, que junto al estudio de su dinámica poblacional y tasas demográficas, ayudarán a testar algunas hipótesis biogeográficas en un escenario de cambio global en zonas de especial vulnerabilidad (Capítulos 3, 4 y 5). Por último, mediante la comparación de ciclos de parcelas permanentes del IFN se ahondará en el conocimiento de la evolución en las últimas décadas de especies invasoras en los ecosistemas forestales del cuadrante noroccidental ibérico, uno de los más afectados por la invasión de esta flora (Capítulo 6). ABSTRACT The effects of global change on forests are one of the major concerns of the XXI century. Some of the potential impacts of global change on forest growth, productivity, biodiversity or changes in species assembly and spatial distribution may have great ecological and economic consequences. The detection and monitoring of these effects are some of the major challenges that scientists and forest managers face nowadays. Based on the comparison of historical series of the Spanish National Forest Inventory (NFI), this thesis tries to shed some light on some of the impacts driven by recent socio-economic and environmental changes on our forest ecosystems. Firstly, this thesis presents an innovative methodology based on geostatistical techniques that allows the comparison of different NFI cycles regardless of the different sampling methods used in each of them (Chapter 3). This methodology, in conjunction with other statistical techniques, allows to analyze changes in the spatial distribution and population dynamics of forest species along different geographic gradients. By its application, this thesis presents some of the first evidences of changes in species distribution along different geographical gradients in the Iberian Peninsula. The analysis of these findings, of species population dynamics and demographic rates will help to test some biogeographical hypothesis on forests under climate change scenarios in areas of particular vulnerability (Chapters 3, 4 and 5). Finally, by comparing NFI cycles with permanent plots, this thesis increases our knowledge about the patterns and processes associated with the recent evolution of invasive species in the forest ecosystems of North-western Iberia, one of the areas most affected by the invasion of allien species at national scale (Chapter 6).

Fuel poverty analysis in three spanish autonomous regions. Some retrofitting policy considerations

A person is to be regarded as living ‘in fuel poverty’ if he is a member of a household living on a lower income in a home which cannot be kept warm at a reasonable cost. This situation is mainly triggered by three factors: low household income, lack of energy efficiency and high energy invoices. Some European countries have already made some advantages towards officially defining fuel poverty in their countries. Nevertheless, in Spain only some research has been done and an official definition of the term is yet to come. This research explores the relation among households’ income, energy expenditure and housing stock in three autonomous regions in Spain in order to evaluate the housing stock of the fuel poor as well as to identify those households more in need. The results of the research allow establishing energy retrofitting priorities of existing housing stock as well as identifying current retrofitting policies limitations on order to tackle fuel poverty.

Juan Martínez Gutiérrez y la modernización de la arquitectura chilena

La presente tesis para optar al grado de Doctor en la Escuela Técnica Superior de Arquitectura de la Universidad Politécnica de Madrid, aborda la obra del arquitecto de origen español Juan Martínez Gutiérrez, reconocido por la crítica especializada como uno de los precursores de la arquitectura moderna en Chile. A pesar de la relevancia de su obra, en la actualidad se carece de un estudio sistematizado y preciso que, de manera global, expongan los factores de modernidad de sus principales edificios, aun cuando han aparecido en los últimos años dos publicaciones referentes al arquitecto y parcialmente a su obra. Formado tanto en arquitectura como en pintura, la labor profesional de Juan Martínez Gutiérrez se inscribió en un contexto de modernización de la sociedad chilena entre la década del 20 y del 50, adjudicándose mediante concurso público, el diseño de cinco edificios institucionales y de carácter público, los que conforman en la actualidad bienes de carácter patrimonial estando dos de ellos declarados Monumento Histórico. Se desenvolvió también en el ámbito de la docencia siendo profesor de la Facultad de Arquitectura y Urbanismo de la Universidad de Chile por más de 35 años y Decano de la misma institución. Participó asimismo de la vida gremial de la profesión, recibiendo en el año 1969 el primer premio nacional de arquitectura. Sus edificios públicos, se han mantenido en uso siendo hitos urbanos y en el ámbito disciplinar reconocidas obras ejemplares. Sin embargo, al comenzar el siglo XXI, cuando la modernidad se nos presenta desde la historicidad, surge la pregunta por los valores que sustenta la arquitectura de Juan Martínez, en relación a su tiempo y a la actualidad. En este ámbito reflexivo se plantea la puesta en tesis de la presente investigación, donde las principales obras del arquitecto se analizan inquiriendo su condición de modernidad a la luz de un contexto local cuyas problemáticas sociales son aunadas por el proyecto desarrollista estatal de la primera mitad del siglo XX; interpelando algunos aspectos del estado técnico del país durante el periodo; las tendencias estéticas imperantes de la época y el entorno urbano en el que se emplazan. Al mismo tiempo, el desarrollo de la tesis examina un tópico referencial de la modernidad latinoamericana, que es el influjo europeo en el punto de inflexión que va desde el fin del modelo academicista y la incorporación de los preceptos de un funcionalismo y racionalismo arquitectónico, todo ello mediado por los condicionantes locales. ABSTRACT The following thesis, to achieve the Doctor´s degree at the Superior Technical School of Architecture of the Polytechnic University of Madrid aboard the work of the chilean architect of spanish origin Juan Martinez Gutierrez, recognized by specialized critic as one of the forefathers of modern architecture in Chile. Although the relevance of his work, currently there is no systematic and precise study of it. A study that in a global view exposes the factors of modernity in his foremost buildings. The absence of such study is, despite the appearance in the last two years of two publications about the architect and –partially- his work. Formed as much in architecture as in painting, the professional labor of Juan Martinez Gutierrez was inscribed in the context of Chilean society modernization, between the decades of the 20´s and 30´s. Awarding himself, by means of architectural contests, the design of institutional buildings of public use, witch conform current cultural goods, two of them having been declared National Monuments; a category of cultural heritage officially protected by the state. He also developed an important academic work, being for more than 35 years, professor at the Faculty of Architecture and Urbanism at the University of Chile and in his time, Faculty Dean. He also participated, actively, in guild life, being awarded in 1969 the first ever, National Prize of Architecture. His public buildings, still in use, are urban landmarks and exemplar works in a disciplinary dimension. Never the less, at the begins of the XXI century, when the modern movement is presented to us from an historical viewpoint, even from historicity, questions surge about the values that sustain Juan Martinez´s architecture in relation to his time and ours. It is in this reflexive field, that is planted the thesis of the present research, where the principal works of the architect are analyzed inquiring their modern condition, at the light of a local context who´s social problems join the chilean social development state the “Estado Desarrolista” of the first half of the XX century, a situation that interpellants several dimensions: the technical status of the country during the period, the aesthetic tendencies prevailing, and the urban context were they place themselves. At the same time, in its development, the thesis examines a referential topic, that is the Latin American modern movement, or the European influx in that inflexion point that goes from the end of academicism Beaux – Art model and the incorporation of functional and rationalist precepts, all mediated by local conditions.

Occurrence and analysis of selected pharmaceutical compounds in soil from Spanish agricultural fields

This work describes the analysis of 15 pharmaceutical compounds, belonging to different therapeutic classes (anti-inflammatory/analgesics, lipid regulators, antiepileptics, ?-blockers and antidepressants) and with diverse physical?chemical properties, in Spanish soils with different farmland uses. The studied compounds were extracted from soil by ultrasound-assisted extraction (UAE) and determined, after derivatization, by gas chromatography with mass spectrometric detection (GC?MS). The limits of detection (LODs) ranged from 0.14 ng g?1 (naproxen) to 0.65 ng g?1 (amitriptyline). At least two compounds where detected in all samples, being ibuprofen, salicylic acid, and paracetamol, the most frequently detected compounds. The highest levels found in soil were 47 ng g?1 for allopurinol and 37 ng g?1 for salicylic acid. The influence of the type of crop and the sampling area on the levels of pharmaceuticals in soil, as well as their relationship with soil physical?chemical properties, was studied. The frequent and widespread detection of some of these compounds in agricultural soils show a diffuse contamination, although the low levels found do not pose a risk to the environment or the human health.

Composition, potential emissions and agricultural value of pig slurry from Spanish commercial farms

Pig slurry is a valuable fertilizer for crop production but at the same time its management may pose environmental risks. Slurry samples were collected from 77 commercial farms of four animal categories (gestating and lactating sows, nursery piglets and growing pigs) and analyzed for macronutrients, micronutrients, heavy metals and volatile fatty acids. Emissions of ammonia (NH3) and biochemical methane potential (BMP) were quantified. Slurry electrical conductivity, pH, dry matter content and ash content were also determined. Data analysis included an analysis of correlations among variables, the development of prediction models for gaseous emissions and the analysis of nutritional content of slurries for crop production. Descriptive information is provided in this work and shows a wide range of variability in all studied variables. Animal category affected some physicochemical parameters, probably as a consequence of different slurry management and use of cleaning water. Slurries from gestating sows and growing pigs tended to be more concentrated in nutrients, whereas the slurry from lactating sows and nursery piglets tended to be more diluted. Relevant relationships were found among slurry characteristics expressed in fresh basis and gas emissions. Predictive models using on-farm measurable parameters were obtained for NH3 (R2 = 0.51) and CH4

Pre-investigation of water electrolysis for flexible energy storage at large scales: the case of the Spanish power system

This report analyzes the basis of hydrogen and power integration strategies, by using water electrolysis processes as a means of flexible energy storage at large scales. It is a prospective study, where the scope is to describe the characteristics of current power systems (like the generation technologies, load curves and grid constraints), and define future scenarios of hydrogen for balancing the electrical grids, considering the efficiency, economy and easiness of operations. We focus in the "Spanish case", which is a good example for planning the transition from a power system holding large reserve capacities, high penetration of renewable energies and limited interconnections, to a more sustainable energy system being capable to optimize the volumes, the regulation modes, the utilization ratios and the impacts of the installations. Thus, we explore a novel aspect of the "hydrogen economy" which is based in the potentials of existing power systems and the properties of hydrogen as energy carrier, by considering the electricity generation and demand globally and determining the optimal size and operation of the hydrogen production processes along the country; e.g. the cost production of hydrogen becomes viable for a base-load scenario with 58 TWh/year of power surplus at 0.025 V/kWh, and large number electrolyzer plants (50 MW) running in variable mode (1-12 kA/m2)

Fostering English-taught higher education programs in a Spanish university: the "TechEnglish" innovative project

In recent years, coinciding with adjustments to the Bologna process, many European universities have attempted to improve their international profile by increasing course offerings in English. According to the Institute of International Education (IIE), Spain has notably increased its English-taught higher education programs, ranking fifth in the list of European countries by number of English-taught Master's programs in 2013. This article presents the goals and preliminary results of an on-going innovative education project (TechEnglish) that aims to promote course offerings in English at the Technical University of Madrid (Universidad Politécnica de Madrid, UPM). The UPM is the oldest and largest of all Technical Universities in Spain. It offers graduate and postgraduate programs that cover all the engineering disciplines as well as architecture. Currently, the UPM has no specific bilingual/multilingual program to promote teaching in English, although there is an Educational Model Whitepaper (with a focus on undergraduate degrees) that promotes the development of activities like an International Semester or a unique shared curriculum. The TechEnglish project is an attempt to foster courses taught in English at 7 UPM Technical Schools, including students and 80 faculty members. Four tasks were identified: (1) to design a university wide framework to increase course offerings, (2) to identify administrative difficulties, (3) to increase visibility of courses offered, and (4) to disseminate the results of the project. First, to design a program we analyzed existing programs at other Spanish universities, and other projects and efforts already under way at the UPM. A total of 13 plans were analyzed and classified according to their relation with students (learning), professors (teaching), administration, course offerings, other actors/institutions within the university (e.g., language departments), funds and projects, dissemination activities, mobility plans and quality control. Second, to begin to identify administrative and organizational difficulties in the implementation of teaching in English, we first estimated the current and potential course offerings at the undergraduate level at the UPM using a survey (student, teacher and administrative demand, level of English and willingness to work in English). Third, to make the course offerings more attractive for both Spanish and international students we examined the way the most prestigious universities in Spain and in Europe try to improve the visibility of their academic offerings in English. Finally, to disseminate the results of the project we created a web page and a workspace on the Moodle education platform and prepared conferences and workshops within the UPM. Preliminary results show that increasing course offerings in English is an important step to promote the internationalization of the University. The main difficulties identified at the UPM were related to how to acknowledge/certify the departments, teachers or students involved in English courses, how students should register for the courses, how departments should split and schedule the courses (Spanish and English), and the lack of qualified personnel. A concerted effort could be made to increase the visibility of English-taught programs offered on-line.