58 research outputs found
From production to destruction? Pagan and mythological statuary in late antique Asia Minor
Pagan and mythological statuary still functioned in the Late Roman city. Studies on this kind of imagery all too often focus on only one aspect or one type of action, frequently assuming that destruction was the preferred way of dealing with conflicted images. To understand the status of statues in an age when the Christian faith was steadily conquering the Roman world, an overview based on various kinds of evidence ranging from production and conscious preservation to violent destruction is necessary. This article brings this data together for the cities of Asia Minor to enhance the general picture.
Encroachment’ in the Eastern Mediterranean between the fourth and the seventh century AD
Encroachment, or the usurpation of public space by secondary structures, is nowadays often considered indicative of economic prosperity. This opinion is largely based on laws and literary sources, whereas many archaeological remains are still categorised as the houses of squatters. This article considers mainly archaeological sources which show the evolution of encroachment throughout Late Antiquity. An overview of its topographical settings within the city and its connection to other buildings is offered, together with an assessment of its appearance and function. These elements are then used to establish the degree of public involvement in its construction and to explain the chronological and topographical spread of encroachment. </p
Meer houvast voor de bemesting in de biologische kleinfruitteelt
Informatie over de specifieke bemestingsbehoeften van (biologisch) kleinfruit is beperkt. Er is een groot assortiment aan teelten en er zijn verschillende teeltwijzen. Ook de bemesting op de bedrijven gebeurt zeer verschillend. Een eerste doelstelling van het project was om correct om te gaan met bemestingsadviezen.
In dit project werd voor een éénjarige bemestingsproef de invloed van verschillende bemestingsregimes op gewasontwikkeling en opbrengst van herfstframboos bepaald. Ook werd het verband tussen de nutriëntenvoorraad in bodem, blad en plantsap aan de hand van verschillende analyses onderzocht. Na het eerste jaar bleek het ook interessant om in het project de mogelijkheden van maaimeststoffen in de kleinfruitteelt verder te bekijken.
Het was vooral de bedoeling een aantal tendensen in kaart te brengen. Voor een meerjarige teelt als herfstframboos is het niet mogelijk om op 2 jaar tijd tot verregaande wetenschappelijke inzichten te komen. Toch werd getracht aan de hand van interpretatie van de resultaten cruciale periodes voor opname en nood aan nutriënten in te schatten. Evenals het acuut en latent gebrek tijdens een teelt, indien mogelijk met een sneltest zoals bladsap-analyse. Omwille van de doelstellingen voor de waterkwaliteit is een laag nitraatresidu in het najaar eveneens belangrijk. Tot slot was ook de uitwisseling van ervaringen rond bemestingsstrategieën waardevol voor dit project
Gates in Late Antiquity. The Eastern Mediterranean.
In Late Antiquity, cities and other important settlements in the Eastern Mediterranean almost completely disappeared from view behind massive fortifications. The walled areas could then only be entered through a small number of highly visible gates. This article investigates the physical appearance of these gates. It presents an overview of their basic requirements and their additional architectural and figurative decoration. It then attempts to explain why these features were used and how this relates to the nature of the settlement - imperial capital, ‘normal’ city, border town or Christian sanctuary - to which they belonged
An analysis of water consumption in Europe’s energy production sector: The potential impact of the EU Energy Reference Scenario 2013 (LUISA configuration 2014)
This report presents the outcome of a study carried out in the frame of a wider assessment performed with the LUISA (Land Use-based Integrated Sustainability Assessment) modelling platform, configured in compliance with the “EU Energy, Transport and GHG emissions trends until 2050” (EU Energy Reference Scenario 2013).
A new methodology has been implemented to estimate and map water requirements for energy production in Europe. In this study, the category of dedicated energy crops (ENCR) played an important role. These crops are expected to emerge as additional fuel sources within the EU28 by 2020. Water requirements in the remaining energy sectors have also been estimated in order to assess whether the introduction of these ENCR may, in any way, compete with the existing water requirements for energy production. More specifically, the study tackles the following questions:
• Where and to what extent will there be potential competition with cooling water required for electricity generation related to the introduction of these crops?
• How will these trends evolve over time?
• How will the introduction of energy crops affect the overall water consumption trends in Europe?
The analysis indicates that high irrigation requirements for ENCR are foreseen in France, Poland, Spain, eastern Germany, and regions of Italy and the UK. Substantial increases in requirements are seen for several regions from 2020 to 2030. ENCR are absent in Finland, Denmark, Greece, Malta, Cyprus and Croatia for the whole simulation period.
Water consumption for cooling in electricity production has been quantified for the years 2020 and 2030 for 2 scenarios with a minimum and a maximum value. There is notable variation in overall water consumption, both over time and between the scenarios. There is an increase in cooling water consumption for most regions in both scenarios over the period 2020 to 2030, which is especially high in France for the minimum scenario. The values given by the two scenarios vary greatly due to the wide range in water consumption between the different cooling technologies assumed in the two cases. In some regions there is even up to a factor 10 difference in total consumption for cooling.
As for any modelling exercise, the study presents a level of uncertainty due to the number of external models giving input and to the assumptions made. In the case of the cooling water mapping, a possible range of minimum/maximum values has been used to reflect the large variation due to the type of cooling system used by each power plant. For the energy crop water requirements we relied on estimates found in the literature. Nevertheless, the study presents an overall continental scale analysis of the potential impacts of the 2013 Energy Reference scenario, covering many of the involved sectors and provides the framework for further refinements and improvements.JRC.B.3-Territorial Developmen
Configuration of a reference scenario for the land use modelling platform
The definition of the Reference Scenario, given in the Energy Trends to 2030 publication by DG ENER (2009 update ), assumes full implementation of the Climate and Energy package. The legislation included within the Climate and Energy Package is reflective of the legally binding targets to ensure that the EU meets its climate and energy targets for 2020. This scenario assumes that national targets under the Renewables directive (2009/28/EC) and the GHG Effort-sharing decision (2009/406/EC) are achieved.
The Reference scenario is one of three energy trends scenarios, used so far for the Energy 2050 Roadmap Impact assessment . The scenarios are derived with the PRIMES model by a consortium led by the National Technical University of Athens (E3MLab). The PRIMES model is key to the definition of the scenarios because of its energy focus. The Reference Scenario itself is derived within PRIMES and is supported by other specialised models downstream.
The purpose of this document is to describe how the LUMP was configured in order to be consistent with the PRIMES and other upstream models within the integrated modelling chain, including the incorporation of the legally binding objectives, directives and guidelines. In order to be coherent with the IA accompanying the Communication on the Energy Roadmap 2050, new policies adopted up until March 2010 were implemented in so far as possible. The implementation has not yet been finalized and this document will be refreshed and re-distributed in its final form once the Reference Scenario has been fully configured.JRC.H.8-Sustainability Assessmen
An assessment of dedicated energy crops in Europe under the EU Energy Reference Scenario 2013. Application of the LUISA modelling platform - Updated Configuration 2014
This report presents a comprehensive analysis of dedicated energy crops (ENCR) performed with the LUISA (Land Use-based Integrated Sustainability Assessment) modelling platform across Europe between 2020 and 2050. LUISA is configured in compliance with the “EU Energy, Transport and GHG emissions trends until 2050” document in order to ensure that the EU meet its climate and energy targets up to 2050 (EU Reference Scenario 2013, updated LUISA configuration 2014). The spatial modelling of ENCR in LUISA requires determining a set of elements such as the land demand, availability and suitability of the land, and other land categories for the ENCR cultivation. Thus, the assessment is focused on the following steps:
1) Land accounts and dominant land use/cover flows for the expansion of energy crops at European scale,
2) A suitability analysis of the land dedicated to these crops based on suitability maps,
3) Recuperation of degraded and contaminated lands for energy purpose,
4) A detailed regional analysis per each Member State (factsheets) with a summary of the main important findings, and
5) Evaluation of energy crops’ impacts on a selection of environmental indicators (provision of ecosystem services).
In LUISA, the displacement and cultivation of crops solely dedicated to energy production takes place on a specific land-use class named ‘energy crop’ (ENCR), which competes in particular with the demand for others land-uses, such as for food, feed and forest.
The amount of ENCR reaches about 13,549 kha in 2050 that represents, on average, 3.6% of Europe’s total available land. This expansion occurs mainly at expenses of land for food and feed (90%). Forest and natural land (9% and 1%,) represent respectively the second and third land flows towards ENCR among total land-use changes (with these flows represented respectively 9 and 1% of all land use changes).
As result of this land competition, there is an increasing shift of food and feed crops towards low quality land, due not only to the ENCR expansion but also to the growth of residential and economic-driven land uses. It should also be noted that intensive agriculture practices for ENCR production might have some negative impacts on soil, water, biodiversity, amongst others. Owing to this potential impacts, the analysis performed on the supply of a set of ecosystem services identifies some services more sensitive than others to ENCR growth. In particular, pollination potential, habitat quality for birds and also the Green-Infrastructure network are expected to decrease due to ENCR growth, while patterns for recreational opportunities and water retention services are less evident.JRC.H.8-Sustainability Assessmen
European landscape changes between 2010 and 2050 under the EU Reference Scenario: EU Reference Scenario 2013 LUISA platform – Updated Configuration 2014
The ‘Land-Use-based Integrated Sustainability Assessment’ modelling platform (LUISA) is primarily used for the ex-ante evaluation of EC policies that have a direct or indirect territorial impact. It is based on the concept of ‘land function’ for cross-sector integration and for the representation of complex system dynamics. Beyond a traditional land use model, LUISA adopts a new approach towards activity-based modelling based upon the endogenous dynamic allocation of population, services and activities.
LUISA has been applied to address the competition for land arising from the energy, transport and climate dimensions of EU policies and configured according to the EU Energy Reference scenario 2013 (updated configuration 2014) to produce high-resolution land use/cover projections up to 2050 and a related series of thematic indicators.
This report describes the stocks and the main land cover/use flows (LCF) taking place in Europe in the period 2010-2050 and the processes that cause those flows, thus providing insight on how the European landscape might change if the future happens according to a reference scenario consistent with settings (economic and demographic in particular) and policies in place in 2013 (hence including in particular the 2020 renewable energy targets).
Main findings:
• The extent of the land for housing and leisure (urban) and industrial/commercial and services (ICS) increases, while the area of agriculture, forest and natural land decreases;
• Urban and industrial land are expected to represent the highest share of net formation as % of the initial year (2010);
• Energy crops appear in the model as of 2020 and are expected to reach 135,479 km2 across Europe in 2050;
• Energy crops become the second most important land transformation in Europe (17%); approximately 90 % of the land consumed for energy purposes comes from land for food and feed, followed by forest and natural land;
• While a large proportion of land dedicated to food and feed crops is expected to be converted into dedicated energy crops, the net land losses are very small as a results of the conversion from forest land into food and feed production;
• New forest and natural land compensate in some way for quantity of losses or consumption by other uses; however the high value of the turnover indicator, reveal that those land-uses are unstable and vulnerable to the fast changes driven by economic development and climate changes, thus compromising the biodiversity and habitat conservation status;
• The conversion between farming types represent 35% over the total land changes between 2010 and 2050;
The results show the loss of natural and agricultural land because of ever-ongoing urbanisation and industrialization processes. The loss of natural and agricultural land for food production is even larger because of the advent of energy crops production incited by shifts in the European Energy supply system.JRC.H.8-Sustainability Assessmen
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