Landscape Patterns of Permafrost Disturbance and Degradation in the Canadian High Arctic

Intensification of permafrost disturbances such as active layer detachments (ALDs) and retrogressive thaw slumps (RTS) have been observed across the circumpolar Arctic. These features are indicators of unstable conditions stemming from recent climate warming and permafrost degradation. In order to understand the processes interacting to give rise to these features, a multidisciplinary approach is required; i.e., interactions between geomorphology, hydrology, vegetation and ground thermal conditions. The goal of this research is to detect and map permafrost disturbance, predict landscape controls over disturbance and determine approaches for monitoring disturbance, all with the goal of contributing to the mitigation of permafrost hazards. Permafrost disturbance inventories were created by applying semi-automatic change detection techniques to IKONOS satellite imagery collected at the Cape Bounty Arctic Watershed Observatory (CBAWO). These methods provide a means to estimate the spatial distribution of permafrost disturbances for a given area for use as an input in susceptibility modelling. Permafrost disturbance susceptibility models were then developed using generalized additive and generalized linear models (GAM, GLM) fitted to disturbed and undisturbed locations and relevant GIS-derived predictor variables (slope, potential solar radiation, elevation). These models successfully delineated areas across the landscape that were susceptible to disturbances locally and regionally when transferred to an independent validation location. Permafrost disturbance susceptibility models are a first-order assessment of landscape susceptibility and are promising for designing land management strategies for remote permafrost regions. Additionally, geomorphic patterns associated with higher susceptibility provide important knowledge about processes associated with the initiation of disturbances. Permafrost degradation was analyzed at the CBAWO using differential interferometric synthetic aperture radar (DInSAR). Active-layer dynamics were interpreted using inter-seasonal and intra-seasonal displacement measurements and highlight the importance of hydroclimatic factors on active layer change. Collectively, these research approaches contribute to permafrost monitoring and the assessment of landscape-scale vulnerability in order to develop permafrost disturbance mitigation strategies.

Urban Agriculture Oriented towards Self-Supply, Social and Commercial Purpose: A Typology

Urban agriculture, a dynamic multifunctional phenomenon, affects the spatial diversification of urban land use, its valorization and its governance. Literature acknowledges its contribution to the development of sustainable cities. The dimension and extent of this contribution depends significantly on the particular form and function of urban agriculture. However, the complexity of interests and dimensions is insufficiently covered by theory. This paper proposes a typology for urban agriculture, supporting both theory building and practical decision processes. We reviewed and mapped the diversity of the types of agriculture found along three beneficial dimensions (self-supply, socio-cultural, commercial) for product distribution scale and actors. We distinguish between ideal types, subtypes and mixed types. Our intention is to include a dynamic perspective in the typology of urban agricultural land use because transition processes between types are observable due to the existence of complex motivations and influences. In a pilot study of 52 urban agriculture initiatives in Germany, we tested the validity of the typology and discussed it with stakeholders, proving novelty and relevance for profiling discussions.

Iowa Nutrient Reduction Strategy stream water quality monitoring in Iowa : measuring progress (2016)

The Iowa Nutrient Reduction Strategy (NRS) is a research- and technology-based approach to assess and reduce nutrients—nitrogen and phosphorus—delivered to Iowa waterways and the Gulf of Mexico by 45 percent. To measure progress, researchers track many different factors, from inputs (e.g. funding) and the human domain (e.g. farmer perspectives) to land management (e.g. on-farm practices) and water quality. Monitoring Iowa streams provides valuable insight into measuring water quality progress and the reduction of surface water nutrient loss. The Iowa Nutrient Reduction Strategy (NRS) aims to reduce the load, or total amount (e.g. tons), of nutrients lost annually. Researchers calculate the load from water monitoring results, which measure concentration combined with stream flow.

Biopolymers - facts and statistics

One of the main concerns of this publication is to furnish a more rational basis for discussing bioplastics and use fact-based arguments in the public discourse. Furthermore, “Biopolymers – facts and statistics” aims to provide specific, qualified answers easily and quickly for decision-makers in particular from public administration and the industrial sector. Therefore, this publication is made up like a set of rules and standards and largely foregoes textual detail. It offers extensive market-relevant and technical facts presented in graphs and charts, which means that the information is much easier to grasp. The reader can expect comparative market figures for various materials, regions, applications, process routes, agricultural land use, water use or resource consumption, production capacities, geographic distribution, etc.

El agua como factor reordenador del territorio en el caso de las inundaciones de la Universidad de la Sabana en 2011

El objetivo de este estudio de caso es analizar el agua como factor reordenador del territorio, en el caso específico de las inundaciones sucedidas en el 2011 en el territorio de la Universidad de la Sabana. Durante la ola invernal del 2011 todo el país sufrió las consecuencias de los errores en la planeación de los asentamientos humanos. La no inclusión de la gestión del riesgo dentro del Ordenamiento Territorial, sumado la falta de comprensión de las dinámicas del territorio y del rol del agua como factor ordenador del territorio, causaron inundaciones y desastres naturales que afectaron la vida de miles de ciudadanos, entre eso los estudiantes, profesores y demás afectados por las inundaciones de la Universidad de la Sabana.

El proceso urbano territorial de Quibdó: una relación entre la gestión de los servicios públicos domiciliarios y las acciones de ordenamiento 2001-2014

El propósito de este trabajo es analizar el proceso urbano territorial del Municipio de Quibdó con respecto a las acciones de ordenamiento y la gestión de los servicios públicos en sus unidades de estudio, Zona Centro, Zona Norte y barrio Niño Jesús. En la primera parte, se describe la importancia de los servicios públicos en la mejora de la calidad de vida de la gente y se desarrolla un recuento histórico de las formas de prestación de los servicios públicos y su situación actual en el municipio. En la segunda parte se describen los principales acciones de Ordenamiento Territorial y, se analiza la forma como estos pudieron guiar, o no, el proceso de ordenamiento territorial del municipio. Finalmente, a partir de elementos como el POT, encuestas focalizadas y fenómenos como el desplazamiento, se analizan los principales factores que afectaron el proceso de ordenamiento territorial y moldearon un nuevo territorio.

Formulación metodológica para la implementación de un sistema de información de precios de la tierra

El precio de la tierra en Colombia ha sido cuestionado durante mucho tiempo principalmente por las compras que el estado ha venido realizando durante los últimos años. Como es sabido, el estado ha sido de los pocos compradores sino el único de terrenos en Colombia durante este tiempo, para dar paso a sus programas y proyectos enmarcados principalmente dentro de la Reforma Agraria, dentro de los cuales se han hecho cuestionamientos del valor de adquisición de los terrenos

Urban public policies: towards the improvement of landscape ecological system. The case-study of the city of Évora, Portugal.

The Charter of European Planning 2013 presents a Vision for the future of European cities and regions, highlighting the sustainability of cities and the preservation of urban ecosystems, integrating the man-made environment with the natural ecosystems and contribute to the well-being and quality of life of their inhabitants and other stakeholders. Thus, urban public policies are crucial to the improvement of the landscape ecological system, achievable by city planning and design. The paper aims to analyse if public urban policies in Portugal have been integrating strategies and/or guidelines to enhance the ecological system of the landscape. Then, which new perspectives are possible, framed by the recently approved law Bases of Public Policy of Soils, Land Management and Urban Planning (2014). This new law, in contrast with the previous ones, don’t allow reserving land to urbanize, in municipal master plans. Moreover, it is possible to revert land classified for urban purposes in those plans into rustic soils (when it is not yet infra-structured or built). It allows creating new planning and design dynamics, convert several areas and including them in the urban ecological structure, essential to the enhancement of landscape ecological system. This is a filed of work where landscape architecture has huge responsibilities, by associating and harmonize man-made environment with natural systems, enlightening sustainability consistent with conservation and improvement of Nature while contributing to the well-being and quality of life of Man. A sustainability that is ethical, aesthetic, ecological and cultural. The study is supported by a case study – the city of Évora. The ultimate goal is to propose measures to promote larger and better integration of ecological component in urban public policies, framed by the new territorial management law, taking into account and highlighting the specificities of the landscape system – Man and Nature – at the local level.

Modern viticulture in southern Europe: Vulnerabilities and strategies for adaptation to water scarcity

Water is now considered the most important but vulnerable resource in the Mediterranean region. Nev ertheless, irrigation expanded fast in the region (e.g. South Portugal and Spain) to mitigate environmental stress and to guarantee stable grape yield and quality. Sustainable wine production depends on sustain able water use in the wine’s supply chain, from the vine to the bottle. Better understanding of grapevine stress physiology (e.g. water relations, temperature regulation, water use efficiency), more robust crop monitoring/phenotyping and implementation of best water management practices will help to mitigate climate effects and will enable significant water savings in the vineyard and winery. In this paper, we focused on the major vulnerabilities and opportunities of South European Mediterranean viticulture (e.g. in Portugal and Spain) and present a multi-level strategy (from plant to the consumer) to overcome region’s weaknesses and support strategies for adaptation to water scarcity, promote sustainable water use and minimize the environmental impact of the sector.

Modern viticulture in southern Europe: vulnerabilities and strategies for adaptation to water scarcity

Water is now considered the most important but vulnerable resource in the Mediterranean region. Nevertheless, irrigation expanded fast in the region (e.g. South Portugal and Spain) to mitigate environmental stress and to guarantee stable grape yield and quality. Sustainable wine production depends on sustainable water use in the wine’s supply chain, from the vine to the bottle. Better understanding of grapevine stress physiology (e.g. water relations, temperature regulation, water use efficiency), more robust crop monitoring/phenotyping and implementation of best water management practices will help to mitigate climate effects and will enable significant water savings in the vineyard and winery. In this paper, we focused on the major vulnerabilities and opportunities of South European Mediterranean viticulture (e.g. in Portugal and Spain) and present a multi-level strategy (from plant to the consumer) to overcome region’s weaknesses and support strategies for adaptation to water scarcity, promote sustainable water use and minimize the environmental impact of the sector.

Linking thermal imaging to physiological indicators in Carica papaya L. under different watering regimes

Water deficit is the most limiting factor for yield and fruit-quality parameters in papaya crop (Carica papaya L.), deficit-irrigation (DI) strategies offering a feasible alternative to manage limiting water resources. When DI is applied, it is crucial to assess the physiological status of the crop in order to maintain the plant within a threshold value of water stress so as no to affect yield or fruit-quality parameters. The aim of this work was to evaluate the feasibility of thermal imaging in young papaya plants to assess the physiological status of this crop when it is subjected to different DI regimes, studying the relationships between the changes in leaf temperature (Tleaf) and in the major physiological parameters (i.e., stomatal conductance to water vapor, gs; transpiration, E; and net photosynthesis, An). The trial was conducted in a greenhouse from March to April of 2012. Plants were grown in pots and subjected to four irrigation treatments: (1) a full irrigation treatment (control), maintained at field capacity; (2) a partial root-zone drying treatment, irrigated with 50% of the total water applied to control to only one side of roots, alternating the sides every 7 days; (3) a regulated deficit irrigation (50% of the control, applied to both sides of plant); (4) and a non-irrigated treatment, in which irrigation was withheld from both sides of the split root for 14 days, followed by full irrigation until the end of the study. Significant relationships were found between Tleaf and major physiological variables such as gs, E and An. Additionally, significant relationships were found between the difference of leaf-to-air temperature (ΔTleaf–air) and gas-exchange measurements, which were used to establish the optimum range of ΔTleaf–air as a preliminary step to the crop-water monitoring and irrigation scheduling in papaya, using thermal imaging as the main source of information. According to the results, we conclude that thermal imaging is a promising technique to monitor the physiological status of papaya during drought conditions.

INSERCIÓN LABORAL Y LÍNEAS DE TRABAJO DEL GEÓGRAFO DE LA UNIVERSIDAD NACIONAL

Este artículo es resultado del seguimiento a graduados de la carrera de Ciencias Geográficas desde el año 2005. El objetivo general se centró en analizar las tareas que realizan los geógrafos para establecer la correspondencia con el perfil del graduado. Se identificaron 16 líneas de trabajo y las tareas realizadas en cada una de éstas, desde la perspectiva de los graduados. Los resultados indican que el área que emplea mayor número de geógrafos es Ciencias de la Información Geográfica; en tanto el área de enseñanza y divulgación de la Geografía ofrece una oportunidad de complementar el empleo principal. Los empleadores destacan como fortalezas de los geógrafos la formación humanista y en Ciencias de la Información Geográfica, Paisaje, Territorio y Recursos Naturales, Gestión y Ordenamiento del Territorio. Se concluye que las tareas realizadas son congruentes con el perfil del graduado del plan de estudio de la carrera.Palabras claves: Líneas de  trabajo del geógrafo, mercado  laboral del geógrafo, carrera de Ciencias Geográficas Universidad Nacional, seguimiento a graduados, perfil del graduado. AbstractThis article is the result of monitoring graduates who started their careers in geographic sciences from the year 2005. Sixteen jobs and the functions of each of these were identified, from the perspective of the graduates. The general objective centered on analyzing the tasks the geographers performed in order to establish the relationship with the graduate profile.The results indicated that the major field of employment is Geographical Information Sciences, meanwhile the field of teaching and publishing offer an opportunity to complement the primary job. The employers emphasized the humanistic formation and geographic information sciences, landscape, land and natural resources, land management and zoning. It concluded that the tasks carried out are congruent with the profile of the graduateʼs plan of course study. Key Words: Lines of work for geographers, labor market for geographers, Geographical Sciences degree, Universidad Nacional, graduate monitoring, graduate profile.

GEOTECNOLOGIAS: POTENCIALIDADES E RISCOS GEOTECHNOLOGIES: MERITS AND RISKS

Esse artigo pretende discutir como as transformações tecnológicas vêm influenciando a ciência geográfica, especificamente com o advento das geotecnologias. Diante de inúmeras potencialidades e aplicações na análise e gestão territorial, nós devemos refletir sobre seu real significado, que certamente ultrapassa o caráter meramente técnico. É necessário compreender a vasta dimensão social, política e econômica que abrangem. Atualmente as técnicas são cada vez mais utilizadas, aceitas e menos compreendidas, o que pode implicar riscos para a sociedade em função de interpretações equivocadas e muitas vezes desprovidas de princípios éticos. Vinte anos após a “unificação” do mundo com a queda do Muro de Berlim, o cenário sociocultural e político se redefine em um paradigma de contradições. As inovações tecnológicas funcionam como um instrumento emblemático subordinado ao mercado financeiro e a globalização marca a atual fase do capitalismo, que segue seu curso encontrando as limitações inerentes à tecnologia em que se sustenta. This paper intends to discuss how the technological changes have affected the geographical science, specifically with the advent of geotechnologies. Up against with great potential and applications in analysis and land management, we must to reflect on its real meaning, which certainly goes beyond the merely technical. It’s necessary to understand the broad social, political and economic dimension wich inclued. Currently, the techniques are increasingly used, accepted and least understood, which may to implicate a risk to society due to misinterpretation and often devoid of ethical principles. Twenty years after the "unification" of the world with the fall of the Berlin Wall, the cultural and political landscape was altered in a paradigm of contradictions. Technological innovations work as a emblematic instrument subordinate to financial markets and globalization marks the current phase of capitalism, which runs its course finding the limitations inherent in the technology which supports.

INDICADORES SOCIOAMBIENTAIS PARA AVALIAÇÃO DE IMPACTO: SISTEMA ESPECIALISTA AMBIENTAL COMO INSTRUMENTO GESTÃO AMBIENTAL

This article aims to present the relation between the selected socio environmental indicators used to make the expert system environment (SEA) as tool for automate the process of viability consultation for implementation of new constructions, which tends to increase the agility of the public administration within the control of use and occupation of municipal land. The development of this tool is justified since the urban growth in most Brazilian cities has promoted sociospatial segregation, marginalization of the poor and degradation of natural environments. To elaborate the conceptual model of the SEA, the present study has selected socio environmental indicators and, also, has used parameters of environmental law and land use. For each indicator was determined a value that is measured by a checklist procedure and for the analysis of the legislation and crossed with the city’s basemap. Thus, it was made a connection between the characterizations of the environment versus the type of work in viability, resulting in a graph which allowed measuring the significant environmental impact. The implementation of the environmental modeling system encounters the instrumentalization of the municipal administration, which will feature modern land management tool.