Sonja Heldt
University of Duisburg-Essen
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Featured researches published by Sonja Heldt.
Environmental Earth Sciences | 2015
Daniel Karthe; Sonja Heldt; Annabelle Houdret; Dietrich Borchardt
Abstract Since it is representative in terms of environmental and socioeconomic conditions, the Kharaa River Basin in Northern Mongolia was chosen as a Central Asian model region for the development and implementation of a science-based IWRM approach. While a highly continental climate results in limited water availability, the combined effects of climate and land use changes and rising water consumption are likely to intensify quantitative and qualitative water scarcity. In such a context, water contamination due to deficient treatment of domestic, industrial and mining-related waste waters is particularly critical, putting at risk human health and aquatic ecosystems. In the recent past, water governance structures in transitional countries like Mongolia have not permitted to respond effectively to such complex challenges. For the model region of the Kharaa River Basin, considerable improvements in the scientific basis are currently coinciding with political reforms incorporating science-based river basin management as a guiding principle. This paper provides an integrative assessment of recent advancements which form the scientific basis for a future IWRM implementation in the region.
Integrated water resources management: Concept, research and implementation | 2016
Daniel Karthe; Sonja Heldt; Grit Rost; Jörg Londong; Jens Ilian; Jörn Heppeler; Jürgen Stäudel; Ganbaatar Khurelbaatar; Christopher Sullivan; Manfred van Afferden; Buren Scharaw; Thomas Westerhoff; Steffen Dietze; Katja Sigel; Jürgen Hofmann; Vanessa Watson; Dietrich Borchardt
Mongolia is a country with limited water resources but a rising water consumption due to an increasing population, urbanization and economic growth, which is largely driven by a booming mining sector. These processes do not only lead to greater water abstractions, but also contribute to water quality and aquatic ecosystem deterioration. Urban areas play a key role in this context, since water abstractions and waste water generation are concentrated here. However, there are considerable disparities between urban centers with centralized water supply and sewage infrastructures and peri-urban regions. Where existant, infrastructures for drinking water supply and wastewater collection and treatment are often in a poor state of maintenance, leading to the contamination of groundwater and surface water bodies with pathogens, nutrients, and other chemical substances. This paper presents components of a modular concept for urban water management at the example of Darkhan Uul Aimag, which were developed and pilot-tested in the context of a project aiming at the development and implementation of an integrated water resources management (IWRM) for the North Mongolian Kharaa River Basin. It is discussed how solutions were adapted to local situations, considering both sustainable resource utilization and local acceptance.
Science of The Total Environment | 2018
Johannes Euler; Sonja Heldt
The European Union Water Framework Directive (EU WFD, 2000) calls for active inclusion of the public in the governance of waterbodies to enhance the effectiveness and legitimacy of water management schemes across the EU. As complex socio-ecological systems, river basins in western Europe could benefit from further support for inclusive management schemes. This paper makes use of case studies from Germany, England and Spain to explore the potential opportunities and challenges of different participatory management approaches. Grounded in theoretical considerations around participation within ecological management schemes, including Arnsteins Ladder of Participation and commons theories, this work provides an evaluation of each case study based on key indicators, such as inclusivity, representativeness, self-organization, decision-making power, spatial fit and temporal continuity. As investors and the public develop a heightened awareness for long-term sustainability of industrial projects, this analysis supports the suggestion that increased participatory river basin management is both desirable and economically feasible, and should thus be considered a viable option for future projects aiming to move beyond current requirements of the European Union Water Framework Directive.
Water | 2015
Daniel Karthe; Jürgen Hofmann; Ralf Ibisch; Sonja Heldt; Katja Westphal; Lucas Menzel; Marcus Malsy
Water | 2015
Jürgen Hofmann; Daniel Karthe; Ralf Ibisch; Michael Schäffer; Saulyegul Avlyush; Sonja Heldt; Andrew Kaus
Environmental Earth Sciences | 2016
Sonja Heldt; Paulina Budryte; Hans Werner Ingensiep; B. Teichgräber; Ute Schneider; Martin Denecke
Science of The Total Environment | 2018
Paulina Budryte; Sonja Heldt; Martin Denecke
Freshwater Metadata Journal | 2018
Jürgen Hofmann; Ralf Ibisch; Daniel Karthe; Buren Scharaw; Michael Schäffer; Melanie Hartwig; Philipp Theuring; Michael Rode; Saulyegul Avlyush; Vanessa Watson; Vanessa Bremerich; Gerel Osor; Andrew Kaus; Katja Westphal; Martin Pfeiffer; Jörg Priess; Christian Schweitzer; Daniel Krätz; Jonas Gröning; Jens Hürdler; Gunsmaa Batbayar; Sonja Heldt; Olaf Büttner; Dietrich Borchardt
Water and environment in the Selenga-Baikal basin: International research cooperation for an ecoregion of global relevance | 2016
Sonja Heldt; Daniel Karthe; Christian K. Feld
Water and environment in the Selenga-Baikal basin: International research cooperation for an ecoregion of global relevance | 2016
Daniel Karthe; Sonja Heldt