Introduction: In Malaysia, excessive nutrients from livestock waste management systems are currently released to the environment. Particularly, large amounts of manure from intensive pig production areas are being excreted daily and are not being fully utilised. Alternatively, the excess manure can be applied as an organic fertiliser source in neighbouring cropping systems on the small landholdings of the pig farms to improve soil fertility so that its nutrients will be available for crop uptake instead of being discharged into water streams. Thus, there is a need for better tools to analyse the present situation, to evaluate and monitor alternative livestock production systems and manure management scenarios, and to support farmers in the proper management of manure and fertiliser application. Such tools are essential to quantify, and assess nutrient fluxes, manure quality and content, manure storage and application rate to the land as well as its environmental effects. Several computer models of animal waste management systems to assist producers and authorities are now available. However, it is felt that more development is needed to adopt such models to the humid tropics and conditions of Malaysia and other developing countries in the region. Objectives: The aim is to develop a novel model to evaluate nutrient emission scenarios and the impact of livestock waste at the landscape or regional level in humid tropics. The study will link and improve existing models to evaluate emission of N to the atmosphere, and leaching of nutrients to groundwater and surface water. The simulation outputs of the models will be integrated with a GIS spatial analysis to model the distribution of nutrient emission, leaching and appropriate manure application on neighbouring crop lands and as an information and decision support tool for the relevant users.
In dem Vorhaben wird untersucht, wie wirksam die absorbierte Lichtenergie in Biomasse konvertiert wird. Vergleichend werden Grünalgen und Diatomeen unter verschiedenen Licht- und Nährstoffbedingungen studiert. Auf diese Weise können die metabolischen Kosten unter Nährstoffmangel oder anderen produktivitätsbegrenzenden Bedingungen studiert werden. So wird auch die Säureanpassung ausgewählter Phytoplankter untersucht, um die Biomassebildung in extrem sauren Tagebaurestseen auf physiologischer Ebene zu verstehen. Es konnte gezeigt werden, dass unter Stickstoffmangel die Überführung anorganischen Kohlenstoffs in Biomassebildung durch eine Veränderung der makromolekularen Zusammensetzung der Zellen ähnlicher Effizienz stattfindet, wie unter optimaler Stickstoffversorgung. Dies führt zu einer ökologisch bedeutsamen Teilentkopplung des C und N Kreislaufs im Ökosystem. Ähnliches beobachtet man auch bei der Anpassung von Phytoplanktonalgen an extrem saure Bedingungen wie man sie in sauren Tagebaurestseen vorfindet.
Die Hochwasserereignisse im Dezember 1993 und Januar 1995 am Rhein, Juli/August 1997 an der Oder sowie im August 2002 an der Elbe und die hervorgerufenen Schäden haben in Deutschland zu der Erkenntnis geführt, dass baulich-technische Hochwasserschutzmaßnahmen nicht ausreichen, sondern dass ein vorsorgeorientiertes, die Ziele einer dauerhaft umweltgerechten Entwicklung verfolgendes Hochwassermanagement erforderlich ist. Dazu zählen der technische Hochwasserschutz, die weitergehende Hochwasservorsorge und die Flächenvorsorge zum natürlichen Rückhalt als vorbeugender Hochwasserschutz. Allerdings treten Defizite bei der Operationalisierung dieser politischen Ziele und Strategien auf der Umsetzungsebene auf. Es bleibt bisher die Frage unbeantwortet, ob es sich dabei um Regelungs- oder Vollzugsdefizite handelt. Das Forschungsvorhaben am Institut für Forst- und Umweltpolitik verfolgt das Ziel, die Bedingungen für die Implementation von existierenden politischen Initiativen zum vorbeugenden Hochwasserschutz zu untersuchen. Bedeutsam für die Untersuchung ist dabei die Betrachtung von Akteuren der verschiedenen politischen Ebenen und Sektoren im Durchführungsprozess, deren Kommunikations- und Machtstrukturen sowie der eingesetzten Instrumente, um hieraus Erkenntnisse über die politische Steuerung und deren Wirkung gewinnen zu können. Die Politikfeldanalyse sieht den Vergleich der Hochwasserschutzpolitik der Bundesländer Nordrhein-Westfalen, Rheinland-Pfalz und Baden-Württemberg vor und wird unter Verwendung von Methoden der qualitativen Sozialforschung durchgeführt. Im Ergebnis sollen Effizienzfaktoren ermittelt und schließlich Handlungsempfehlungen für die Implementation von ressort- und grenzübergreifenden Planungsprozessen in komplexen politischen Systemen abgeleitet werden.
Non wood fuels for small-scale furnaces have attracted increasing interest in several European countries. New technological approaches are on the way, but the verification of any such developments is difficult and there is a large uncertainty about testing procedures and equipment. While for wood combustion standardized European measuring regulations are available and broadly applied, the testing of cereal fuel combustion is generally not following a commonly accepted procedure. Consequently the results of such measurements are not fully comparable. This applies particularly for the international level, which is here of particular relevance due to the fact that a combustion technology development for a niche application can only be economically viable if a sufficiently large marketing area can be taken into focus. The overall objective of the proposal is therefore to contribute through research to the development of uniform and comparable European procedures for testing of small-scale boilers up to a power out of 300 kW for solid biomass from agriculture like straw pellets and energy grain. The driving forces and barriers will be worked out; existing legal regulation for the installation (approval by the local authorities) in the participating countries will be collected. The state of the art of the non wood biomass boiler technology will be identified; the need for standardized tests for type approval tests and the measures to establish a European Standard will be shown. Measurement methods with special emphasis on efficiency and emissions will be worked out and the requirements and specifications of test fuels will be proposed. Test runs will be carried out following preliminary test procedures based on existing European standards for wood boilers. Based on the results of these test runs a draft for a Europe-wide uniform test procedure will be proposed. Preparatory work for a European standardization process including a round robin test will be done.
The proposed regulation concerning the registration, evaluation, authorisation and restriction of chemicals (REACH) requires demonstration of the safe manufacture of chemicals and their safe use throughout the supply chain. There is therefore a strong need to strengthen and advance human and environmental risk assessment knowledge and practices with regard to chemicals, in accord with the precautionary principle. The goal of the project OSIRIS is to develop integrated testing strategies (ITS) fit for REACH that enable to significantly increase the use of non-testing information for regulatory decision making, and thus minimise the need for animal testing. To this end, operational procedures will be developed, tested and disseminated that guide a transparent and scientifically sound evaluation of chemical substances in a risk-driven, context-specific and substance-tailored (RCS) manner. The envisaged decision theory framework includes alternative methods such as chemical and biological read-across, in vitro results, in vivo information on analogues, qualitative and quantitative structure-activity relationships, thresholds of toxicological concern and exposure-based waiving, and takes into account cost-benefit analyses as well as societal risk perception. It is based on the new REACH paradigm to move away from extensive standard testing to a more intelligent, substance-tailored approach. The work will be organised in five interlinked research pillars (chemical domain, biological domain, exposure, integration strategies and tools, case studies), with a particular focus on more complex, long-term and high-cost endpoints. Case studies will demonstrate the feasibility and effectiveness of the new ITS methodologies, and provide guidance in concrete form. To ensure optimal uptake of the results obtained in this project, end-users in industry and regulatory authorities will be closely involved in monitoring and in providing specific technical contributions to this project.
Phosphorous (P) is an essential component of all cells. P assimilation occurs mainly in the form of phosphate via the reactions of the energy and carbon metabolism. Therefore, the P metabolism is closely intertwined with the energy and the central carbon metabolism: only with sufficient P supply an optimal energy and carbon metabolism is possible. As the latter generates precursor metabolites for the biosynthesis of amino acids, the interplay of P and C metabolism is of particular importance in amino acid producing Corynebacterium glutamicum. The Institute of Biotechnology 1 at the Research Center Jülich successfully worked on the biochemical and genetic characterisation of the main amino acid biosynthesis pathways in C. glutamicum as well as on the central carbon metabolism. Moreover, using nuclear magnetic resonance (NMR) studies and stable isotope labeling techniques, in vivo activities of single enzymes and pathways were quantified. These informations were used to optimize amino acid production with C. glutamicum (metabolic design, Sahm et al. 2000). Within the project, the P metabolism and its regulation shall be characterized in depth using the genome sequence of C. glutamicum. The phosphate stimulon of C. glutamicum will be defined using DNA microarray technology. Among this group of genes showing differential expression in dependence of phosphate availability, genes of the energy and central carbon metabolism will be of particular interest. In Jülich, the equipment for the generation and application of DNA microarrays is available as well as expertise to use this key technology for genome-wide expression analyses in E. coli (Zimmer et al. 2000). A parallel approach will focus on unraveling the molecular mechanism(s) of phosphate regulation with particular emphasis on two-component regulatory sytems, which in E. coli and B. subtilis play central roles in this regulation. Regarding the analysis of genetic regulatory mechanisms, extensive experience has been gained for the genetic and biochemical characterization of two-component sytems in enterobacteria (Kaspar et al. 1999).
FOOTPRINT aims at developing a suite of three pesticide risk prediction and management tools, for use by three different end-user communities: farmers and extension advisors at the farm scale, water managers at the catchment scale and policy makers/registration authorities at the national/EU scale. The tools will be based on state-of-the-art knowledge of processes, factors and landscape attributes influencing pesticide fate in the environment and will integrate innovative components which will allow users to: i) identify the dominant contamination pathways and sources of pesticide contamination in the landscape; ii) estimate pesticide concentrations in local groundwater resources and surface water abstraction sources; iii) make scientifically-based assessments of how the implementation of mitigation strategies will reduce pesticide contamination of adjacent water resources. The three tools will share the same overall philosophy and underlying science and will therefore provide a coherent and integrated solution to pesticide risk assessment and risk reduction from the scale of the farm to the EU scale. The predictive reliability and usability of the tools will be assessed through a substantial programme of piloting and evaluation tests at the field, farm, catchment and national scales. The tools developed within FOOTPRINT will allow stakeholders to make consistent and robust assessments of the risk of contamination to water bodies at a range of scales relevant to management, mitigation and regulation (farm, catchment and national/EU). They will in particular i) allow pesticide users to assess whether their pesticide practices ensure the protection of local water bodies and, ii) provide site-specific mitigation recommendations. The FOOTPRINT tools are expected to make a direct contribution to the revision of the Directive 91/414/EC, the implementation of the Water Framework Directive and the future Thematic Strategy on the Sustainable Use of Pesticides. Prime Contractor: Bureau de Recherches Géologiques et Minières; Paris; France.
Wildfires are a major problem for many European societies threatening human lives and property with disastrous impacts particularly at the wildland-urban interface. On the other hand humans always used fire as a tool to regulate nature and traditional use of fire is known in many regions of Europe. The understanding of this paradox, is thus essential for finding solutions for integrated wildland fire management.This concept requires considering the various aspects of fire, from its use as a planned management practice (prescribed fire) to the initiation and propagation of unplanned fires (wildfires) and to the use of fire in fighting wildfires (suppression fire). Prescribed or suppression fires will therefore set the limits for wildfires by vontrolling their spatial extent, intensity and impacts. This is the main approach adopted aiming at the creation of the scientific and technological bases for new practices and policies under integrated wildland fire management and in the development of strategies for its implementation in Europe. Three major domains of related activities were considered: research, development and dissemination. In research, the project will focus on understanding the machanisms and modelling the processes associated with fire, from physics to biology and social sciences. Experimental and sampling methods will be used. The scientific and technical knowledge gathered will allow the development of a technological platform that will integrate the fire model, the temporal and spatial variability of fuels and weather, and the potential ecological and social-economical impacts. Documentation and demonstration platforms will also be extensively used for dissemination, focusing in the development of stategies for public awarness, academic and professional training using new communication technologies and networks, and for the implementation of new practices, policies and regulations under the concept of integrated wildland fire management. Prime Contractor: Universidade Tecnica de Lisboa, Instituto Superior de Agronomia; Lisboa; Portugal.
Heavy metals from different sources accumulate in the environment. From a policy point of view, it has been difficult to tackle the environmental problems due to heavy metals partly because the problem has been viewed from different policy domains (air, water, soils etc.). Thus, it is not guaranteed that the policy mix applied under environmental regulation is optimal. A systems analysis would be required to define the sources of heavy metals, how they are dispersed in the environment and which adverse effects they might cause on human and ecosystems health. From a policy point of view, it is also important to identify what kinds of policy responses would be most cost-effective to reduce the impacts of heavy metals. Such information is required for carrying out cost-benefit analyses of reducing the occurrence of heavy metals in our society. Identifying the benefits would include a monetary valuation of the impacts with contingent valuation (CV) approaches (e.g. assessing the willingness-to-pay, WTP). The focus of the work described will be on priority metals, which are mercury, cadmium, chrome, nickel, arsenic and lead. Core aim of the research is to carry out cost effectiveness (CEA) and cost-benefit analyses (CBA) for reducing the heavy metals occurrence, in the EU Member States and candidate countries, including damage assessment to the environment and human health in the long term following the impact pathway analysis which assesses the impacts and damages of pollutants from their emissions over their dispersion to exposure and impacts. Finally, a feasibility study will be conducted to identify the potentials, strengths and weaknesses and uncertainties of currently available macro-economic models to identify further research needs in this field.
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