Irrigation in the Yanqi Basin, Sinkiang, China has led to water table rise and soil salination. A model is used to assess management options. These include more irrigation with groundwater, water saving irrigation techniques and others. The model relies on input data from remote sensing.The Yanqi Basin is located in the north-western Chinese province of Xinjiang.This agriculturally highly productive region is heavily irrigated with water drawn from the Kaidu River. The Kaidu River itself is mainly fed by snow and glacier melt from the Tian Mountain surrounding the basin. A very poor drainage system and an overexploitation of surface water have lead to a series of environmental problems: 1. Seepage water under irrigated fields has raised the groundwater table during the last years, causing strongly increased groundwater evaporation. The salt dissolved in the groundwater accumulates at the soil surface as the groundwater evaporates. This soil salinization leads to degradation of vegetation as well as to a loss of arable farmland. 2. The runoff from the Bostan Lake to the downstream Corridor is limited since large amount of water is used for irrigation in the Yanqi Basin. Nowadays, the runoff is maintained by pumping water from the lake to the river. The environmental and ecological system is facing a serious threat.In order to improve the situation in the Yanqi Basin, a jointly funded cooperation has been set up by the Institute of Environmental Engineering, Swiss Federal Institute of Technology (ETH) , China Institute of Geological and Environmental Monitoring (CIGEM) and Xinjiang Agricultural University. The situation could in principle be improved by using groundwater for irrigation, thus lowering the groundwater table and saving unproductive evaporation. However, this is associated with higher cost as groundwater has to be pumped. The major decision variable to steer the system into a desirable state is thus the ratio of irrigation water pumped from the aquifer and irrigation water drawn from the river. The basis to evaluate the ideal ratio between river and groundwater - applied to irrigation - will be a groundwater model combined with models describing the processes of the unsaturated zone. The project will focus on the following aspects of research: (...)
The decomposition of terrestrial organic material such as leaf litter represents a fundamental ecosystem function in streams that delivers energy for local and downstream food webs. Although agriculture dominates most regions in Europe and fungicides are applied widely, effects of currently used fungicides on the aquatic decomposer community and consequently the leaf decomposition rate are largely unknown. Also potential compensation of such hypothesised adverse effects due to nutrients or higher average water temperatures associated with climate change are not considered. Moreover, climate change is predicted to alter the community of aquatic decomposers and an open question is, whether this alteration impacts the leaf decomposition rate. The current projects follows a tripartite design to answer these research questions. Firstly, a field study in a vine growing region where fungicides are applied in large amounts will be conducted to whether there is a dose-response relationship between the exposure to fungicides and the leaf decomposition rate. Secondly, experiments in artificial streams with field communities will be carried out to assess potential compensatory mechanisms of nutrients and temperature for effects of fungicides. Thirdly, field experiments with communities exhibiting a gradient of taxa sensitive to climate change will be used to investigate potential climate-related effects on the leaf decomposition rate.
We will compare the role of an RNA-binding protein in floral transition in Arabidopsis thaliana and Hordeum vulgare. The RNA-binding protein AtGRP7 promotes floral transition mainly by downregulating the floral repressor FLC via the autonomous pathway. Based on our observation that AtGRP7 affects the steady-state abundance of a suite of microRNA precursors, we will globally compare the small RNA component of the transcriptome during FTi regulation in wild type plants and AtGRP7 overexpressors by deep sequencing. This will extend the knowledge on small RNAs associated with floral transition and provide insights into the regulatory network downstream of this RNA-binding protein. Further, we will address the question how AtGRP7 orthologues function in crop species lacking FLC homologues. A barley line with highly elevated levels of the AtGRP7 orthologue HvGR-RBP1 shows accelerated FTi and preanthesis development when compared to a near-isogenic parent with very low expression of this gene. We will characterize in detail flowering of this line with respect to different photoperiods and its vernalization requirement. We will employ a TILLING approach to further delineate the function of HvGR-RBP1 in flowering. A candidate gene approach to identify downstream targets will provide insights into the signaling pathways through which HvGR-RBP1 influences FTi. This project contributes to the development of a functional cross-species network of FTi regulators, the major strategic aim of the SPP.
Nutrient loss from ecosystems has become of global major global concern as it reduces the sustainability of ecosystems and because it causes eutrophication of surface water. In this project we investigate whether soil fungi enhance ecosystem sustainability by preventing nutrient leaching loss after rainfall. Background: Leaching of nutrients (nitrogen and phosphorus) from fertile agricultural ecosystems has become of major global concern because it causes eutrophication of surface water with adverse consequences for human health and water quality. Moreover, losses from infertile ecosystems can reduce plant productivity and ecosystem sustainability if there is no additional nutrient input. Hence, it is of critical importance to understand which mechanisms prevent nutrient loss and retain nutrients inside ecosystems. Besides lateral transport of nutrients via soil erosion and surface runoff, vertical movement through the soil profile (e.g. leaching) has been recognized as an important process contributing to nutrient loss. Until now there are no studies that tested whether mycorrhizal fungi can reduce nutrient losses. This is surprising because mycorrhizal fungi are often very abundant in the soil and play a key role in the nutrient cycle of plant communities. Mycorrhizal fungi can forage highly effectively for nutrients in the soil and, by doing so they could prevent leaching of nutrients (e.g. in winter or during periods with heavy rainfall). Aims: The following key questions are investigated in this project: 1. Can mycorrhizal fungi reduce nutrient loss from experimental grassland? 2. Can arbuscular mycorrhizal fungi reduce nutrient leaching losses at high soil fertility, low temperatures and when rainfall intensity increases? 3. Is ecosystem sustainability (measured as nutrient retention and reduced nutrient loss after rainfall) enhanced by the presence of diverse communities of arbuscular mycorrhizal fungi? Relevance: It has been reported that the available phosphate sources will be depleted in about 50 years and some authors suggest that we will face a phosphate crisis endangering agricultural production. Thus, it is of critical importance to understand whether mycorrhizal fungi can reduce phosphorus loss from soils. Moreover, the production of nitrogen fertiliser is energetically expensive and high levels of nitrate in groundwater are of concern because they can pose a significant health risk and have a negative impact on downstream ecosystems. Hence, this shows that there is a need to better understand which factors influence the N-cycle and reduce N-losses.
Farm households, whose living standard largely depend on the successful management of natural resources, have a low per capita income and are in danger of further impoverishment due to unsustainable resource management. Investigations in the first phase confirmed the hypothesis. A great number of farms were analyzed and clustered in representative types in both countries. Sustainability was measured using a sustainability index, which indicates tremendous environmental effects and variation between individual farms and ethnic groups.Sub-project G1.1 will follow three major tasks. The first is to evaluate sustainability strategies on the farm and farming system level, as it was done in the previous phase, but on the basis of a significantly extended data base. The second is to aggregate farm household data to the regional level. For this, a comparative-static approach is chosen. The third is to develop a multi-agent-based simulation model. Multi-agent simulation models (MAS) as well as GIS-tools are gaining increasing importance as tools for simulating future agriculture resource use, since they allow the integration of a wide range of different stakeholder's perceptions. It becomes possible to simulate the dynamic effects of changing land use patterns, environmental policy options, and technical innovation together with environmental constraints and structural change issues. The MAS approach is used to model heterogeneous farm-household and political decision makers perspectives by capturing their socio-economic, environmental, and spatial interactions explicitly. The integration of economic and spatial processes facilitates the consideration of feedback effects and the efficient use of scarce land resources. The simulation runs of the model will be carried out with a socio-economic and GIS data set, which is provided by the previous project phase in the attempt to generate effective ways of land use resource management. Land use efficiency is strongly influenced by the overall land allocation policy analyzed in project F1. Therefore, this is an important area further integrated research using MAS in combination with GIS as modeling tools.To achieve a continuous integration of results in the best possible way, a computer-based discussion/communication platform is developed. This serves as the conceptual basis for the development of the final multi-agent simulation model. Results of the discussion/communication platform and the agent-based simulation model will continuously be passed on to downstream sub-projects to be integrated into the ongoing research activities.
Due diligence concerning a Biodiesel project dealing with: Establishment of Biodiesel plantations; creation of nurseries, oil expelling plants and bio-diesel refineries. Implementation and management of all downstream activities including all by products and Carbon Credit Trading. Services provided: Assessment of site selection and energy infrastructure; Assessment of technical feasibility, estimation of required process energy and process emissions; Estimation of the projects energy balance, estimation project emissions; Estimation of investment plan, operational costs, legal framework and Jatropha oil application options; Assessment of technology risk, summary on open questions; Assessment of irrigation infrastructure, technology suitable for the project, investment costs for irrigation infrastructure; Identification and review of project boundaries and baseline scenarios; Collection of data on project emissions, assessment of public relation status, dialogue with DNA and local government representatives; Calculation of project emissions, assessment of methodological requirements; Assessment of legal framework for CDM projects; Identification of trial plot, EIA requirements and risks; Assessment of social impacts, project risks.
Project MySterI (Mycobacterial Steroids for Industry) aims to produce high value steroid precursorsusing a novel bioconversion strategy resulting in lower production costs and less cost to the environment. The aim is to convert phytosterols in cheap waste plant material to desired steroidprecursors with engineered strains of fast-growing, saprophytic mycobacteria in single fermentationsteps. The bioconversion of phytosterols has not been widely adopted in the biotechnology industrybecause of problems with microbial strains, process efficiency and therefore poor yield. At the heart of project MySterI is the bioconversion of phytosterols to 3ß-hydroxyandrost-5-ene-17-one (DHEA) orto androst-4-ene-3,17-dione (AD) (intermediary precursor) and then to 11a-hydroxyandrost-4-ene-3,17-dione (11-a-OH-AD) and testosterone. A conceptual downstream processing design methodology will be developed valid for the produced compounds. The evaluation of the production process will be done using key performance indicators (e.g., Separation Cost Indicator, Purification Fingerprints). The robot based conceptual design methodology should merge heuristic methods, automated experiments, statistical methods as well as modeling and simulation to one extensive tool.
SYNPOL aims to propel the sustainable production of new biopolymers from feedstock. SYNPOL will theretoestablish a platform that integrates biopolymer production through modern processing technologies, withbacterial fermentation of syngas, and the pyrolysis of highly complex biowaste (e.g., municipal, commercial,sludge, agricultural). The R&D activities will focus on the integration of innovative physico-chemical, biochemical,downstream and synthetic technologies to produce a wide range of new biopolymers. The integration will engagenovel and mutually synergistic production methods as well as the assessment of the environmental benefitsand drawbacks. This integrative platform will be revolutionary in its implementation of novel microwave pyrolytictreatments together with systems-biology defined highly efficient and physiologically balanced recombinantbacteria. The latter will produce biopolymer building-blocks and polyhydroxyalkanoates that will serve tosynthesize novel bio-based plastic prototypes by chemical and enzymatic catalysis. Thus, the SYNPOL platformwill empower the treatment and recycling of complex biological and chemical wastes and raw materials in asingle integrated process. The knowledge generated through this innovative biotechnological approach will notonly benefit the environmental management of terrestrial wastes, but also reduce the harmful environmentalimpact of petrochemical plastics. This project offers a timely strategic action that will enable the EU to lead worldwide the syngas fermentation technology for waste revalorisation and sustainable biopolymer production.
Objective: The WHaTeR project aims to contribute to the development of appropriate water harvesting techniques (WHTs). These WHTs should be sustainable under dynamic global and regional pressure, and strengthen rainfed agriculture, improve rural livelihood and increase food production and security in Sub-Saharan Africa. In total 3 European and 5 African organisations will be involved; namely VU University Amsterdam (The Netherlands), Newcastle University (United Kingdom), Stockholm Resilience Centre (Sweden), University of Kwazulu Natal (South Africa), Sokoine University (Tanzania), Southern and Eastern Africa Rainwater Network (Kenya), National Institute for Environment and Agricultural Research (Burkina Faso) and one Ethiopian organisation to be decided upon. Project activities will be divided over 14 Work Packages. The first Work Package covers project management and the second comprises a situation analysis-through revisits to water harvesting sites in 15 African countries studied previously by participating organisations. The next four Work Packages focus on detailed research and technology development activities on cross-cutting themes (environmental sustainability; technology development; livelihood improvement; uptake and upscalling; and global and regional impact) and will be conducted together with four country-based Work Packages (in Burkina Faso, Ethiopia, South Africa and Tanzania). One Work Package will concentrate on stakeholder communication and outreaching activities, and the final Work Packages consists of synthesis and dissemination of project results, including production of guidelines for WHTs. The project will spend an estimated 74Prozent of the budget on RTD, 13Prozent on other costs related to stakeholder workshops and outreaching and 13Prozent on project management. The expected impacts of the project comprise technology support for farmers, development of stakeholder communication networks, innovative water harvesting systems, tools for impact assessment, upstream-downstream land use, and policy support for integrated water management and adaptation to climate change to promote EU and African strategies on strengthening rainfed agriculture, food security and livelihoods.
The world is currently experiencing a major biodiversity crisis due to human activities. A primary concern is the on-going and rapid biological consequences of global climate change. Climate change is impacting alpine landscapes at unprecedented rates, with severe impacts on landscape structure and catchment hydrodynamics, as well as temperature regimes of glacial-fed rivers. Most glaciers are expected to be dramatically reduced and many even gone by the year 2100, concomitantly with changes (timing and magnitude) in temperature and precipitation. These environmental changes are predicted to have strong impacts on the persistence and distribution of alpine organisms, their population structure and community assembly, and, ultimately, ecosystem functioning. However, how alpine biodiversity (aquatic macroinvertebrates in our case) will respond to these changes is poorly understood. Most previous studies predict the presence of species based on the distribution of putatively suitable habitats but ignore biotic traits, such as dispersal, and potential eco-evolutionary responses to such changes. Clearly, accurate predictions on species responses require integrative studies incorporating landscape dynamics with eco-evolutionary processes. The primary goal of the proposed research is to empirically test determinants of alpine macroinvertebrate responses to rapid environmental change mediated by glacial recession. Climate-induced glacial retreat is occurring rapidly and in a replicated fashion (i.e. over multiple catchments and continents), which provides a natural experiment for testing determinants of organismal and species diversity responses to climate change in alpine waters. The responses of alpine aquatic macroinvertebrates are highly important because of their known sensitivity (i.e. response rates) to environmental change and their fundamental role in ecosystem functioning. Using an integrative comparative and experimental approach, we will target the following main question: What are the roles of ecological and evolutionary processes in population level responses of macroinvertebrates to environmental change? The study will take advantage of rapid glacial recession (environmental change) to empirically examine spatio-temporal patterns in species distribution in nature, combined with experimental and population genetics approaches. The data generated will be used to explicitly address the role of eco-evolutionary processes (determinants) on population level responses for selected key species. Spatial and temporal variation in species distribution, phenotypic and genetic variation will be quantified for two stream macroinvertebrates (hemimetabolous mayfly Baetis alpinus, holometabolous caddisfly Allogamus uncatus), and measuring landscape features and physico-chemical parameters along longitudinal transects downstream of glaciers and selected side-slope tributaries (as potential stepping stones for dispersal and colonization).
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