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Dr. Jürgen Berlekamp
Osnabrueck University, Institute of Environmental Systems Research

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0 Environmental Impact Assessment
0 Environmental Modelling
0 Hydropower
0 environmental pollution
0 River Basin Management

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River Basin Management
Hydropower

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Original article
Published: 08 July 2021 in Environmental Processes
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Anthropogenically influenced transboundary catchment areas require an appropriately adapted exposure modelling. In such catchments, water management decisions strongly influence and override natural river hydrology. We adapted the existing exposure assessment model GREAT-ER to better represent artificially overprinted hydrological conditions in the simulations. Changes in flow directions and emission routes depending on boundary conditions can be taken into account by the adopted approach. The approach was applied in a case study for the drug metformin in the cross-border catchment of Vecht (Germany/Netherlands). In the Dutch part, pumps to maintain necessary water levels and minimum flow rates during dry periods lead to a reversal of the (natural) flow directions and as a consequence to additional pollutant input from the Lower Rhine/Ijssel along with a spatial redistribution of emissions in the catchment area. The model results for the pharmaceutical product metformin show plausible concentration patterns that are consistent with both monitoring results and literature findings at mean discharges and the effects of the changed hydrology in times of low natural discharges, namely an increase in polluted river sections under dry conditions due to the pumping activities. The adapted methodology allows for realistic application of the GREAT-ER model in anthropogenically modified catchments. The approach can be used in similar catchments worldwide for more realistic aquatic exposure assessment.

ACS Style

Volker Lämmchen; Jörg Klasmeier; Lucia Hernandez-Leal; Jürgen Berlekamp. Spatial Modelling of Micro-pollutants in a Strongly Regulated Cross-border Lowland Catchment. Environmental Processes 2021, 1 -20.

AMA Style

Volker Lämmchen, Jörg Klasmeier, Lucia Hernandez-Leal, Jürgen Berlekamp. Spatial Modelling of Micro-pollutants in a Strongly Regulated Cross-border Lowland Catchment. Environmental Processes. 2021; ():1-20.

Chicago/Turabian Style

Volker Lämmchen; Jörg Klasmeier; Lucia Hernandez-Leal; Jürgen Berlekamp. 2021. "Spatial Modelling of Micro-pollutants in a Strongly Regulated Cross-border Lowland Catchment." Environmental Processes , no. : 1-20.

Journal article
Published: 01 February 2021 in Sustainability
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Mitigating climate change, while human population and economy are growing globally, requires a bold shift to renewable energy sources. Among renewables, hydropower is currently the most economic and efficient technique. However, due to a lack of impact assessments at the catchment scale in the planning process, the construction of hydropower plants (HPP) may have unexpected ecological, socioeconomic, and political ramifications in the short and in the long term. The Vjosa River, draining parts of Northern Greece and Albania, is one of the few predominantly free-flowing rivers left in Europe; at the same time its catchment is identified an important resource for future hydropower development. While current hydropower plants are located along tributaries, planned HPP would highly impact the free-flowing main stem. Taking the Vjosa catchment as a case study, the aim of this study was to develop a transferable impact assessment that ranks potential hydropower sites according to their projected impacts on a catchment scale. Therefore, we integrated established ecological, social, and economic indicators for all HPP planned in the river catchment, while considering their capacity, and developed a ranking method based on impact categories. For the Vjosa catchment, ten hydropower sites were ranked as very harmful to the environment as well as to society. A sensitivity analysis revealed that this ranking is dependent upon the selection of indicators. Small HPP showed higher cumulative impacts than large HPP, when normalized to capacity. This study empowers decision-makers to compare both the ranked impacts and the generated energy of planned dam projects at the catchment scale.

ACS Style

Rebecca Peters; Jürgen Berlekamp; Ana Lucía; Vittoria Stefani; Klement Tockner; Christiane Zarfl. Integrated Impact Assessment for Sustainable Hydropower Planning in the Vjosa Catchment (Greece, Albania). Sustainability 2021, 13, 1514 .

AMA Style

Rebecca Peters, Jürgen Berlekamp, Ana Lucía, Vittoria Stefani, Klement Tockner, Christiane Zarfl. Integrated Impact Assessment for Sustainable Hydropower Planning in the Vjosa Catchment (Greece, Albania). Sustainability. 2021; 13 (3):1514.

Chicago/Turabian Style

Rebecca Peters; Jürgen Berlekamp; Ana Lucía; Vittoria Stefani; Klement Tockner; Christiane Zarfl. 2021. "Integrated Impact Assessment for Sustainable Hydropower Planning in the Vjosa Catchment (Greece, Albania)." Sustainability 13, no. 3: 1514.

Research article
Published: 07 January 2021 in Environmental Science and Pollution Research
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The geo-referenced regional exposure assessment tool for European rivers (GREAT-ER) is designed to support river basin management or the implementation process within the EU Water Framework Directive by predicting spatially resolved exposure concentrations in whole watersheds. The usefulness of the complimentary application of targeted monitoring and GREAT-ER simulations is demonstrated with case studies for three pharmaceuticals in selected German watersheds. Comparison with monitoring data corroborates the capability of the probabilistic model approach to predict the expected range of spatial surface water concentrations. Explicit consideration of local pharmaceutical emissions from hospitals or private doctor’s offices (e.g., for X-ray contrast agents) can improve predictions on the local scale without compromising regional exposure assessment. Pharmaceuticals exhibiting low concentrations hardly detectable with established analytical methods (e.g., EE2) can be evaluated with model simulations. Management scenarios allow for a priori assessment of risk reduction measures. In combination with targeted monitoring approaches, the GREAT-ER model can serve as valuable support tool for exposure and risk assessment of pharmaceuticals in whole watersheds.

ACS Style

Volker Lämmchen; Gunnar Niebaum; Jürgen Berlekamp; Jörg Klasmeier. Geo-referenced simulation of pharmaceuticals in whole watersheds: application of GREAT-ER 4.1 in Germany. Environmental Science and Pollution Research 2021, 28, 21926 -21935.

AMA Style

Volker Lämmchen, Gunnar Niebaum, Jürgen Berlekamp, Jörg Klasmeier. Geo-referenced simulation of pharmaceuticals in whole watersheds: application of GREAT-ER 4.1 in Germany. Environmental Science and Pollution Research. 2021; 28 (17):21926-21935.

Chicago/Turabian Style

Volker Lämmchen; Gunnar Niebaum; Jürgen Berlekamp; Jörg Klasmeier. 2021. "Geo-referenced simulation of pharmaceuticals in whole watersheds: application of GREAT-ER 4.1 in Germany." Environmental Science and Pollution Research 28, no. 17: 21926-21935.

Journal article
Published: 06 December 2019 in Scientific Reports
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Dam construction comes with severe social, economic and ecological impacts. From an ecological point of view, habitat types are altered and biodiversity is lost. Thus, to identify areas that deserve major attention for conservation, existing and planned locations for (hydropower) dams were overlapped, at global extent, with the contemporary distribution of freshwater megafauna species with consideration of their respective threat status. Hydropower development will disproportionately impact areas of high freshwater megafauna richness in South America, South and East Asia, and the Balkan region. Sub-catchments with a high share of threatened species are considered to be most vulnerable; these are located in Central America, Southeast Asia and in the regions of the Black and Caspian Sea. Based on this approach, planned dam locations are classified according to their potential impact on freshwater megafauna species at different spatial scales, attention to potential conflicts between climate mitigation and biodiversity conservation are highlighted, and priorities for freshwater management are recommended.

ACS Style

Christiane Zarfl; Jürgen Berlekamp; Fengzhi He; Sonja C. Jähnig; William Darwall; Klement Tockner. Future large hydropower dams impact global freshwater megafauna. Scientific Reports 2019, 9, 1 -10.

AMA Style

Christiane Zarfl, Jürgen Berlekamp, Fengzhi He, Sonja C. Jähnig, William Darwall, Klement Tockner. Future large hydropower dams impact global freshwater megafauna. Scientific Reports. 2019; 9 (1):1-10.

Chicago/Turabian Style

Christiane Zarfl; Jürgen Berlekamp; Fengzhi He; Sonja C. Jähnig; William Darwall; Klement Tockner. 2019. "Future large hydropower dams impact global freshwater megafauna." Scientific Reports 9, no. 1: 1-10.

Journal article
Published: 01 February 2015 in Environmental Modelling & Software
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ACS Style

Nils Kehrein; Jürgen Berlekamp; Jörg Klasmeier. Modeling the fate of down-the-drain chemicals in whole watersheds: New version of the GREAT-ER software. Environmental Modelling & Software 2015, 64, 1 -8.

AMA Style

Nils Kehrein, Jürgen Berlekamp, Jörg Klasmeier. Modeling the fate of down-the-drain chemicals in whole watersheds: New version of the GREAT-ER software. Environmental Modelling & Software. 2015; 64 ():1-8.

Chicago/Turabian Style

Nils Kehrein; Jürgen Berlekamp; Jörg Klasmeier. 2015. "Modeling the fate of down-the-drain chemicals in whole watersheds: New version of the GREAT-ER software." Environmental Modelling & Software 64, no. : 1-8.

Journal article
Published: 25 October 2014 in Aquatic Sciences
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Human population growth, economic development, climate change, and the need to close the electricity access gap have stimulated the search for new sources of renewable energy. In response to this need, major new initiatives in hydropower development are now under way. At least 3,700 major dams, each with a capacity of more than 1 MW, are either planned or under construction, primarily in countries with emerging economies. These dams are predicted to increase the present global hydroelectricity capacity by 73 % to about 1,700 GW. Even such a dramatic expansion in hydropower capacity will be insufficient to compensate for the increasing electricity demand. Furthermore, it will only partially close the electricity gap, may not substantially reduce greenhouse gas emission (carbon dioxide and methane), and may not erase interdependencies and social conflicts. At the same time, it is certain to reduce the number of our planet’s remaining free-flowing large rivers by about 21 %. Clearly, there is an urgent need to evaluate and to mitigate the social, economic, and ecological ramifications of the current boom in global dam construction.

ACS Style

Christiane Zarfl; Alexander E. Lumsdon; Jürgen Berlekamp; Laura Tydecks; Klement Tockner. A global boom in hydropower dam construction. Aquatic Sciences 2014, 77, 161 -170.

AMA Style

Christiane Zarfl, Alexander E. Lumsdon, Jürgen Berlekamp, Laura Tydecks, Klement Tockner. A global boom in hydropower dam construction. Aquatic Sciences. 2014; 77 (1):161-170.

Chicago/Turabian Style

Christiane Zarfl; Alexander E. Lumsdon; Jürgen Berlekamp; Laura Tydecks; Klement Tockner. 2014. "A global boom in hydropower dam construction." Aquatic Sciences 77, no. 1: 161-170.

Journal article
Published: 31 January 2009 in Environmental Modelling & Software
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We developed a decision support system (DSS) for sustainable river basin management in the German Elbe catchment (∼100,000 km2), called Elbe-DSS. The system integrates georeferenced simulation models and related data sets with a user friendly interface and includes a library function. Design and content of the DSS have been developed in close cooperation with end users and stakeholders. The user can evaluate effectiveness of management actions like reforestation, improvement of treatment plant technology or the application of buffer strips under the influence of external constraints on climate, demographic and agro-economic changes to meet water management objectives such as water quality standards and discharge control. The paper (i) describes the conceptual design of the Elbe-DSS, (ii) demonstrates the applicability of the integrated catchment model by running three different management options for phosphate discharge reduction (reforestation, erosion control and ecological-farming) under the assumption of regional climate change based on IPCC scenarios, (iii) evaluates the effectiveness of the management options, and (iv) provides some lessons for the DSS-development in similar settings. The georeferenced approach allows the identification of local inputs in sub-catchments and their impact on the overall water quality, which helps the user to prioritize his management actions in terms of spatial distribution and effectiveness.

ACS Style

Sven Lautenbach; Jürgen Berlekamp; Neil Graf; Ralf Seppelt; Michael Matthies. Scenario analysis and management options for sustainable river basin management: Application of the Elbe DSS. Environmental Modelling & Software 2009, 24, 26 -43.

AMA Style

Sven Lautenbach, Jürgen Berlekamp, Neil Graf, Ralf Seppelt, Michael Matthies. Scenario analysis and management options for sustainable river basin management: Application of the Elbe DSS. Environmental Modelling & Software. 2009; 24 (1):26-43.

Chicago/Turabian Style

Sven Lautenbach; Jürgen Berlekamp; Neil Graf; Ralf Seppelt; Michael Matthies. 2009. "Scenario analysis and management options for sustainable river basin management: Application of the Elbe DSS." Environmental Modelling & Software 24, no. 1: 26-43.

Book chapter
Published: 01 January 2009 in Cities between Competitiveness and Cohesion
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The German part of the Elbe River and its basin are characterized by multiple problems and objectives that call for strategic management based on an integrated approach. In August 2002, the region suffered a catastrophic flood with loss of lives and damage amounting to over 9 billion Euro. During the summer months, because of low flows, shipping along the river is problematic, which considerably reduces the economic transport capacity of the river. Several areas along the river act as a habitat for rare plant and animal species and have been designated as nature reserves. The output of diffuse and point sources of pollution in the river basin must be controlled in order to comply with standards of the EU Water Framework Directive (EU 2000).

ACS Style

Bernhard M. Hahn; Sebastian Kofalk; Jean-Luc De Kok; Jürgen Berlekamp; Mariele Evers. Elbe DSS: A Planning Support System for Strategic River Basin Planning. Cities between Competitiveness and Cohesion 2009, 95, 113 -136.

AMA Style

Bernhard M. Hahn, Sebastian Kofalk, Jean-Luc De Kok, Jürgen Berlekamp, Mariele Evers. Elbe DSS: A Planning Support System for Strategic River Basin Planning. Cities between Competitiveness and Cohesion. 2009; 95 ():113-136.

Chicago/Turabian Style

Bernhard M. Hahn; Sebastian Kofalk; Jean-Luc De Kok; Jürgen Berlekamp; Mariele Evers. 2009. "Elbe DSS: A Planning Support System for Strategic River Basin Planning." Cities between Competitiveness and Cohesion 95, no. : 113-136.

Journal article
Published: 22 October 2008 in Water Resources Management
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During the last two decades several integrated tools have been developed to make the existing scientific knowledge available to river managers and assist them with the formulation and evaluation of alternative combinations of measures. Yet, few practical examples of embedding of these instruments in river management organizations can be observed so far. This paper identifies the possible organizational, technical, and scientific factors that may form an obstacle for the design and application of a Decision-Support System (DSS) for river-basin management by analyzing the interaction between the different participants in the Elbe DSS project. In particular attention is paid to the software engineering aspects of the design process. In order to start an integrated approach to deal with conflicting river strategies a project to develop a prototype tool for integrated management of the Elbe catchment was initiated, which includes functionalities related to inland navigation, water quality, flood safety, and vegetation ecology. The problems faced in the German part of the Elbe catchment range from poor navigation conditions and flooding vulnerability to a need to restore and maintain the natural state of the floodplains. Several river engineering works such as large-scale dike shifting, channel dredging, and large-scale retention are in a planning or implementation stage. From the beginning of the project onwards attention was paid to the involvement of potential end-users and key stakeholders in the design process. The experience of the project is that internal consistency of models and data, effective communication, and functional flexibility are essential to warrant a proper balance between scientific standards, the availability of models, and the requirements of users. This facilitates the design process and improves the chance of successful implementation.

ACS Style

Jean-Luc De Kok; Sebastian Kofalk; Jürgen Berlekamp; Bernhard Hahn; Herman Wind. From Design to Application of a Decision-support System for Integrated River-basin Management. Water Resources Management 2008, 23, 1781 -1811.

AMA Style

Jean-Luc De Kok, Sebastian Kofalk, Jürgen Berlekamp, Bernhard Hahn, Herman Wind. From Design to Application of a Decision-support System for Integrated River-basin Management. Water Resources Management. 2008; 23 (9):1781-1811.

Chicago/Turabian Style

Jean-Luc De Kok; Sebastian Kofalk; Jürgen Berlekamp; Bernhard Hahn; Herman Wind. 2008. "From Design to Application of a Decision-support System for Integrated River-basin Management." Water Resources Management 23, no. 9: 1781-1811.

Journal article
Published: 14 March 2008 in Aquatic Sciences
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Models of in-stream phosphorus retention either lack high spatial and temporal resolution, or need a high number of input parameters.We provide a simple new approach that deals with these deficits. Soluble reactive phosphorus (SRP) tracer studies based on the nutrient spiralling concept were evaluated to derive a simple model that explains SRP retention. SRP uptake length (SRP-S w ) was considered to be a measure of transient SRP storage and was transformed to load-weighted retention (R) using an exponential relationship. Stream order (so) and flow velocity (u) were considered as input parameters to explain SRP uptake length. Model validation showed significant correlation with measured uptake lengths. The model explained 46% of SRP retention, and simulated and measured retention were in the same order of magnitude. Our model may act in concert with emission models to account for lateral SRP sources within the catchment. Although our empirical model does not describe biological processes and is not a substitute for detailed biogeochemical studies, it provides an efficient tool to predict load-weighted soluble nutrient retention and nutrient transport to downstream systems and is applicable in most small pristine streams.

ACS Style

Marcus Schulz; Maik Bischoff; Jörg Klasmeier; Jürgen Berlekamp; Michael Matthies. An empirical regression model of soluble phosphorus retention for small pristine streams evaluating tracer experiments. Aquatic Sciences 2008, 70, 115 -122.

AMA Style

Marcus Schulz, Maik Bischoff, Jörg Klasmeier, Jürgen Berlekamp, Michael Matthies. An empirical regression model of soluble phosphorus retention for small pristine streams evaluating tracer experiments. Aquatic Sciences. 2008; 70 (2):115-122.

Chicago/Turabian Style

Marcus Schulz; Maik Bischoff; Jörg Klasmeier; Jürgen Berlekamp; Michael Matthies. 2008. "An empirical regression model of soluble phosphorus retention for small pristine streams evaluating tracer experiments." Aquatic Sciences 70, no. 2: 115-122.

Journal article
Published: 28 February 2007 in Environmental Modelling & Software
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The Elbe-DSS is a computer based system for integrated river basin management of the German part of River Elbe basin. Simulation models are used to assess the efficiency of measures such as reforestation, changes of agricultural practices or the efficiency of wastewater treatment plants for achieving management targets. MONERIS and GREAT-ER are integrated into the Elbe-DSS to assess nutrient and pollutant loads. MONERIS calculates nutrient inputs from diffuse and point sources on a sub-catchment scale of about 1000 km2. GREAT-ER is a tool for exposure assessment of point source emissions and considers fate in sewage treatment plants as well as degradation and transport in rivers. Both models make long-term predictions, but their spatial scales of operations differ. GREAT-ER divides the whole river network into small segments that are linked through a routing algorithm. The segments are coupled to MONERIS using accumulated flow length distribution. Linking the two models allows to distribute diffuse nutrient emissions calculated from MONERIS and point source emissions from GREAT-ER to the river network, where further elimination and transport processes are calculated. We exemplify the DSS in a study assessing the effects of different reforestation and erosion control measures on phosphate loads and concentrations in the river network.

ACS Style

Jürgen Berlekamp; Sven Lautenbach; Neil Graf; Silke Reimer; Michael Matthies. Integration of MONERIS and GREAT-ER in the decision support system for the German Elbe river basin. Environmental Modelling & Software 2007, 22, 239 -247.

AMA Style

Jürgen Berlekamp, Sven Lautenbach, Neil Graf, Silke Reimer, Michael Matthies. Integration of MONERIS and GREAT-ER in the decision support system for the German Elbe river basin. Environmental Modelling & Software. 2007; 22 (2):239-247.

Chicago/Turabian Style

Jürgen Berlekamp; Sven Lautenbach; Neil Graf; Silke Reimer; Michael Matthies. 2007. "Integration of MONERIS and GREAT-ER in the decision support system for the German Elbe river basin." Environmental Modelling & Software 22, no. 2: 239-247.

Book chapter
Published: 01 January 2001 in Integrative Systems Approaches to Natural and Social Dynamics
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Spatially distributed information on regional-scale groundwater quality has to be presumed unknown for most locations. Monitoring and modeling techniques are possibilities to complete the gaps in the knowledge on this. For this reason a nitrogen balance model (including climate, land-use, soil, and aquifer properties) was applied to a study area in northwestern Germany (2240 km2) to get potential nitrate concentrations in the percolating water and in the upper groundwater layer in the period from 1983 to 1994. This was compared with monitoring results of approx. 7500 domestic wells in the study area.

ACS Style

Stefan Fuest; Jürgen Berlekamp; Michael Matthies. Regional-Scale Groundwater Quality: Monitoring and Assessment Using Spatially Referenced Environmental Data. Integrative Systems Approaches to Natural and Social Dynamics 2001, 223 -234.

AMA Style

Stefan Fuest, Jürgen Berlekamp, Michael Matthies. Regional-Scale Groundwater Quality: Monitoring and Assessment Using Spatially Referenced Environmental Data. Integrative Systems Approaches to Natural and Social Dynamics. 2001; ():223-234.

Chicago/Turabian Style

Stefan Fuest; Jürgen Berlekamp; Michael Matthies. 2001. "Regional-Scale Groundwater Quality: Monitoring and Assessment Using Spatially Referenced Environmental Data." Integrative Systems Approaches to Natural and Social Dynamics , no. : 223-234.

Journal article
Published: 01 January 1998 in Water, Air, & Soil Pollution
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The results of the first German moss monitoring programme to estimate heavy metal pollution in the Federal Republic of Germany were combined with other large-scale investigations carried out in Germany and then classified geographically in a new form. Using Monte Carlo assisted factor analysis, six factors indicating sources of pollution were identified from the sets of element data from the moss monitoring project (As, Cd, Cr, Cu, Fe, Ni, Pb, Ti, V, Zn) and the data sets for SO2 and particulate. The geographic distribution patterns of the factor values showed the regions in which the various sources are to be found. By combining the data the primarily anthropogenic chromium concentrations of the mosses were compared with the mainly geogenic chromium concentrations of the stream sediments in the form of examples. After normalization, the transformed chromium concentrations were transferred to a map of the entire area using inverse distance weighting. Anthropogenic and geogenic influences are being discussed on the basis of the results.

ACS Style

Jürgen Berlekamp; Uwe Herpin; Michael Matthies; Helmut Lieth; Bernd Markert; Vera Weckert; Bert Wolterbeek; Tona Verburg; Hans-Jürgen Zinner; Ulrich Siewers. Geographic Classification of Heavy Metal Concentrations in Mosses and Stream Sediments in the Federal Republic of Germany. Water, Air, & Soil Pollution 1998, 101, 177 -195.

AMA Style

Jürgen Berlekamp, Uwe Herpin, Michael Matthies, Helmut Lieth, Bernd Markert, Vera Weckert, Bert Wolterbeek, Tona Verburg, Hans-Jürgen Zinner, Ulrich Siewers. Geographic Classification of Heavy Metal Concentrations in Mosses and Stream Sediments in the Federal Republic of Germany. Water, Air, & Soil Pollution. 1998; 101 (1/4):177-195.

Chicago/Turabian Style

Jürgen Berlekamp; Uwe Herpin; Michael Matthies; Helmut Lieth; Bernd Markert; Vera Weckert; Bert Wolterbeek; Tona Verburg; Hans-Jürgen Zinner; Ulrich Siewers. 1998. "Geographic Classification of Heavy Metal Concentrations in Mosses and Stream Sediments in the Federal Republic of Germany." Water, Air, & Soil Pollution 101, no. 1/4: 177-195.