Bernhard Zeiringer
Dipl.-Ing. Bernhard Zeiringer
Institute of Hydrobiology and Aquatic Ecosystem Management (IHG)
Location Gregor-Mendel-Straße 33, 1180 Wien
Email bernhard.zeiringer@boku.ac.at
Tel: +43 1 47654-81215
Projects
0 Projects found.
Publications
Knowledge Transfer to Society
Media
Lectures
(2023) Minderung von Schwallbelastungen: Rechtlicher Rahmen, Hydrologische Grundlagen, Maßnahmenfindung und -bewertung, morphologisch/hydraulische Grundlagen, fisch- und benthosökologische Auswirkungen und Monitoring
Autoren: Greimel, F; Auhser, A; Merl, K; Leitner, P; Holzapfel, P.; Hauer, C.; Zeiringer, B
Praxisseminar „Schwall“:
(2023) ÖkoResch - Stand der Forschung und wissenschaftliche Kommunikation
Autoren: Greimel, F; Zeiringer, B; Auhser, A.; Merl, K.; Leitner, P.
6. Treffen des ÖkoResch Fachbeirats,
(2023) FISHMONITORING IN THE FRAMEWORK OF THE AUSTRIAN HYDROPEAKING GUIDELINE
Autoren: Merl, K; Zeiringer, B; Auer, S; Führer, S; Greimel, F; Hayes, D; Ofenböck, G; Schmutz, S
40th IAHR WORLD CONGRESS 2023
(2023) ÖkoResch - Dotationsexperimente im Hochgebirge
Autoren: Greimel, F; Zeiringer, B; Auhser, A; Merl, K; Leitner, P
7. Treffen des ÖkoResch Fachbeirats
(2022) Biodiversity and anthropogenic impacts on fishes of Shohimardon River drainage, Ferghana valley, Central Asia
Autoren: Karimov, B; Karimov, E; Zeiringer, B; Coeck, J; Hayes, DS
36th Congress of the International Society of Limnology SIL 2022
(2022) Ökologische Bewertung von direkten Maßnahmen zur Schwalldämpfung an der Ill und abiotisch/biotisches Monitoring
Autoren: Greimel, F; Zeiringer, B; Leitner, P
Expertentagung Rodund
(2022) ÖkoResch - Geplante wissenschaftliche Publikationen als Grundlage für nationale Leitfäden zum Thema Schwall/Restwasser im Hochgebirge
Autoren: Greimel, F; Zeiringer, B; Auhser, A; Merl, K; Leitner, P; Holzapfel, P; Hauer, C; Schmutz, S; Graf, W
4. Treffen des ÖkoResch Fachbeirats 2022
(2022) ÖkoResch - Grundlagen für nationale Leitfäden zum Thema Schwall, offene Fragen und Öffentlichkeitsarbeit
Autoren: Greimel, F; Zeiringer, B; Auhser, A; Merl, K; Leitner, P
5. Treffen des ÖkoResch Fachbeirats 2022
(2021) ÖkoResch - Datenmanagement, Freiland-Experimente und potentielle Versuchsstandorte
Autoren: Greimel, F; Zeiringer, B; Dossi, F; Leitner, P
3. Treffen des ÖkoResch Fachbeirats 2021
(2021) Assessing the response of grayling to multiple stressors in Austrian hydropeaking rivers
Autoren: Hayes, D.S.; Lautsch, E.; Unfer, G.; Greimel, F.; Zeiringer, B.; Höller, N.; Schmutz, S.
12th Symposium for European Freshwater Sciences 2021
(2021) ÖkoResch - Projektorganisation, Fallbeispiele und Datenmanagement
Autoren: Greimel, F; Zeiringer, B; Dossi, F; Schülting, L; Leitner, P
2. Treffen des ÖkoResch Fachbeirats 2021
(2020) ÖkoResch - Forschungsziele, methodische Herangehensweise und Zeitplan
Autoren: Greimel, F; Leitner, P; Zeiringer, B; Schülting, L; Dossi, F; Holzapfel, P; Hauer, C; Graf, W; Schmutz, S;
1. Treffen des ÖkoResch Fachbeirats 2020
(2019) Challenges in Riverine Ecosystem Management
Autoren: Seliger, C; Zeiringer, B; Schmutz, S;
Sustainable Hydropower - Strategic Planning, Measures and Governance
(2018) SUSTAINABLE RIVER MANAGEMENT IN AUSTRIA INTEGRATIVE EVALUATION OF HYDRO PEAKING MITIGATION MEASURES
Autoren: Greimel, F., Zeiringer, B., Haslauer, M., Auer, S., Führer, S., Hayes, D., Höller, N., Holzapfel, P., Fuhrmann, M., Hauer, C., Pfleger, M., Matt, P., Koller-Kreimel, V., Neubarth, J., Schmutz, S.
12th International Symposium on Ecohydraulics 2016
(2018) SHUI-ChE - Potential solutions for minimizing environmental impacts in the Panxi river
Autoren: Zeiringer, B; Seliger, C; Cui, Z; Schmutz, S;
Panxi Case Study Visit & Workshop
(2018) Green hydropower standards as tool towards sustainable existing and planned small hydropower
Autoren: Seliger, C; Zeiringer, B; Cui, Z; Schmutz, S;
Qingdao International Water Conference
(2017) Effects of Impact Mitigation Techniques on Fisheries and Aquatic Ecology
Autoren: Seliger, C; Schmutz, S; Zeiringer, B
ISH0306 - Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshops - Final phase
(2017) Mitigation of Hydropower Impacts on fish - The Austrian Hydropeaking Approach
Autoren: Greimel, F; Zeiringer, B; Auer, S; Führer, S; Hauer, C; Holzapfel, P; Fuhrmann, M; Pfleger, M; Schmutz, S
Hydropower and Fish Joint Workshop IEA Hydropower TCP – European Commission DG RTD 2017
(2016) HyTEC – first results from an experimental facility to study the effect of hydro- and thermopeaking on fish, macroinvertebrates and microphytobenthos
Autoren: Bondar-Kunze Elisabeth, Kasper Veronica, Maier Stefanie, Schönauer Doris, Schülting Lisa, Graf Wolfram, Auer Stefan , Schmutz Stefan, Zeiringer Bernhard, Hein Thomas
1st GLOBAQUA CONFERENCE: Managing The Effects Of Multiple Stressors On Aquatic Ecosystems Under Water Scarcity
(2016) Fish passage through a hydrodynamic double-screw: an alternative solution for restoring river connectivity
Autoren: Zeiringer, B; Führer, S; Grigull, M; Pinter, K; Pröll, F; Unfer, G; Auer, S; Jungwirth, M; Schmutz, S
Annual Meeting of the German Society of Limnology DGL and the SIL Austria 2016
(2016) Longitudinal assessment of hydropeaking impacts and evaluation of mitigation measures
Autoren: Greimel, F; Zeiringer, B; Hauer, C; Holzapfel, P; Fuhrmann, M; Schmutz, S
11th International Symposium on Ecohydraulics 2016
(2016) Impacts of Case Study Scenarios and Mitigation Techniques - Fisheries and Aquatic Ecology
Autoren: Schmutz, S; Seliger, C; Zeiringer, B;
ISH0306 - Development of Guidelines for Hydropower Environmental Impact mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - Regional Workshop - 2nd Interim Phase
(2016) Fischschutz und Fischabstieg - Darstellung der Forschungsaktivität in Österreich
Autoren: Rauch, P; Pinter, K; Pröll, F; Seliger, C; Zeiringer, B; Unfer, G
Annual Meeting of the German Society of Limnology DGL and the SIL Austria 2016
(2016) Assessing ecological impacts of hydropeaking in Austrian rivers
Autoren: Schmutz, S; Auer, S; Bondar-Kunze, E; Feld, C; Graf, W; Greimel, F; Hein, T; Schülting, L; Unfer, G; Zeiringer, B
SANIERUNG DER AUSWIRKUNGEN VON SCHWALL UND SUNK
(2016) Impacts of Alternative Scenarios and Mitigation Techniques - Fisheries and Aquatic Ecology
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
ISH0306 - Development of Guidelines for Hydropower Environmental Impact mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Worhshops - 2nd Interim Phase
(2016) The Development of Guidelines for Hydropower Impact Mitigation and Risk Management in the Lower Mekong Mekong Mainstream and Tributaries
Autoren: Lillehammer, L; Sloff, K; Passchier, R; Grant, C; Bramslev, J.P.; Koehnken, L; Phonekeo, V; Krohn, S; Seliger, C; Giri, S; Stenseth, B; Stave, J; Zeiringer, B; Walløe-Lilleeng, K; Heimstad, R; Laugen, J.J.; Poudel, A; Adler-Gjerde, O;
6th International Conference and Exhibition on Water Resources and Hydropower Development in Asia 2016
(2016) Integrative Hydropeaking Management in Austria
Autoren: Greimel, F; Zeiringer, B.; Auer, S.; Führer, S.; Hauer, C.; Holzapfel, P.; Fuhrmann, M.; Pfleger, M.; Schmutz, S.
Sanierung von Schwall und Sunk - Herausforderungen und Lösungen
(2016) Fischschutz und FIschabstieg - Darstellung der Forschungsaktivität in Österreich
Autoren: Rauch, P; Pinter, K; Pröll, F; Seliger, C; Zeiringer, B; Unfer, G
Annual Meeting of the German Society of Limnology DGL and the SIL Austria 2016
(2015) Priority hydropower risks, impacts and vulnerabilities – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Vietnam, 1st Interim Phase
(2015) Priority hydropower risks, impacts and vulnerabilities – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Thailand, 1st Interim Phase
(2015) General Project Mitigation Options – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Laos, 1st Interim Phase
(2015) General Project Mitigation Options – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Thailand, 1st Interim Phase
(2015) Priority hydropower risks, impacts and vulnerabilities – Aquatic Ecology and Fisheries
Autoren: Lillehammer, L; Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Cambodia, 1st Interim Phase
(2015) General Project Mitigation Options – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Vietnam, 1st Interim Phase
(2015) General Project Mitigation Options – Aquatic Ecology and Fisheries
Autoren: Lillehammer, L; Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Cambodia, 1st Interim Phase
(2015) Priority hydropower risks, impacts and vulnerabilities – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop, 1st Interim Phase
(2015) Auswirkungen von Schwall und Sunk auf die Gewässerökologie
Autoren: Stefan Schmutz, Auer Stefan, Franz Paul Horn, Bernhard Zeiringer
Speicher und Pumpspeicherkraftwerke - Nachhaltige Innovationen für die Volkswirtschaft
(2015) Risk Assessment and General Project Mitigation Options – Aquatic Ecology and Fisheries
Autoren: Lillehammer, L; Seliger, C; Schmutz, S; Zeiringer, B.
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Cambodia Pnom Penh, 1st Interim Phase
(2015) Priority hydropower risks, impacts and vulnerabilities – Aquatic Ecology and Fisheries
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Development of Guidelines for Hydropower Environmental Impact Mitigation and Risk Management in the Lower Mekong Mainstream and Tributaries - National Workshop Laos, 1st Interim Phase
(2014) A new method to detect and characterize anthropogenic and natural short term flow-fluctuations
Autoren: Greimel, F; Zeiringer, B; Höller, N; Schmutz, S
10th International Symposium on Ecohydraulics 2014
(2014) EXPERIMENTS ON DRIFTING AND STRANDING OF JUVENILE GRAYLING DURING FLUCTUATING FLOW IN NATURE-LIKE CHANNELS WITH DIFFERENT MORPHOLOGICAL STRUCTURES
Autoren: Zeiringer, B; Fohler, N; Auer, S; Greimel, F; Schmutz, S
10th International Symposium on Ecohydraulics 2014
(2014) Fischökologische Untersuchungen an der Wasserkraftschnecke „HYDROCONNECT“ mit „Albrecht fishLift inside“ am Standort KW Jeßnitz
Autoren: Zeiringer, B
Initiative Fischwanderung & Wasserkraft 1. Experten-Forum
(2014) Fischökologische Untersuchungen an der Wasserkraftschnecke „HYDROCONNECT“ mit „Albrecht fishLift inside“ am Standort KW Jeßnitz
Autoren: Zeiringer, B;
Sachverständigentagung 2014
(2014) HyTEC: Schwallexperimente 2012 - 2014
Autoren: Zeiringer, B; Fohler, N; Auer, S; Greimel, F; Jungwirth, M; Schmutz, S
6. Expertentag "Schwall und Sunk: Forschungsstand & Ausblick"
(2013) HyTEC - Schwallversuche mit Bachforellen und Äschen
Autoren: Zeiringer, B
Schwallworkshop Lunz
(2013) Hydrologie schwallbeeinflusster Strecken und ökologische Auswirkungen
Autoren: Stefan Schmutz, Thomas Friedrich, Wolfram Graf, Franz Greimel, Mathias Jungwirth, Helga Kremser, Patrik Leitner, Andreas Melcher, Bernhard Zeiringer
Sachverständigentagung 2013
(2013) Schwall-Versuchsanlage HyTEC: Drift und Strandung von juvenilen Äschen infolge künstlicher Abflussschwankungen
Autoren: Zeiringer, B; Greimel, F; Jungwirth, M; Schmutz, S
44. Jahrestreffen des Arbeitskreises Hydrologie 2012
(2012) SEE HydroPower - Clear Water Clean Energy: WP4 - Preserving Water Bodies' Ecosystems - Environmental Flow Comparison
Autoren: Mielach, C; Schinegger, R; Schmutz, S; Zeiringer, B
9th International Symposium on Ecohydraulics 2012
(2012) Hydro peaking in Alpine rivers and its effects on fish assemblages
Autoren: Greimel, F.;Melcher, A.H.; Zeiringer, B.; Unfer, G.; Schmutz, S.
TECHNOPORT Conference Sharing Possibilities 2012 - Renewable Energy Research Confernce
(2012) WP4 - Preserving water bodies ecosystems
Autoren: Mielach, C; Schinegger, R; Zeiringer, B; Schmutz, S
SEE Hydropower Final Partner Meeting 2012
(2012) Example case study: Piave/Mis river - Habitat modelling
Autoren: Mielach, C; Schinegger, R; Zeiringer, B; Cesca, M; Vianello, A
SEE Hydropower Final Partner Meeting 2012
(2012) EXPERIMENTS ON DRIFTING AND STRANDING OF LARVAL GRAYLING DURING FLUCTUATING FLOW IN NATURE-LIKE CHANNELS
Autoren: Zeiringer, B; Fuchshuber, S; Greimel, F; Jungwirth, M; Melcher, A; Schmutz, S
9th International Symposium on Ecohydraulics 2012
(2012) SEE Hydropower - Preservation of aquatic ecosystems - Comparison of EF methods
Autoren: Mielach, C; Schinegger, R; Zeiringer, B; Schmutz, S
SIL-Austria Meeting 2012
(2012) Hydropeaking in Alpine rivers and its effects on fish assemblages.
Autoren: Friedrich, T; Melcher, A; Greimel, F; Unfer, ;, Schmutz, S; Zeiringer, B.
9th International Symposium on Ecohydraulics 2012
(2012) The influence of stranding due to hydropeaking on grayling (Thymallus thymallus) population of the Drau River, Austria
Autoren: Unfer, G., Zeiringer, B., Hauer, C.
9th International Symposium on Ecohydraulics 2012
(2012) Environmental flow - habitat modellig. Case studies from Austria
Autoren: Zeiringer, B.; Melcher, A.H.; Mielach, C.; Schinegger, R.; Schmutz, S.
Target Workshop Eco Management, Water Flow 2012
(2012) The new Austrian hydro-morphological and temperature experimental channel HyTEC
Autoren: Zeiringer, B.; Fuchshuber, S.; Jungwirth, M.; Greimel, F.; Unfer, G.; Melcher, A.; Schmutz, S.
Annual Seminar CEDREN 2012 - Renewable Energy
(2012) Characterization of Rapid Flow Fluctuations caused by Hydropeaking in Austria
Autoren: Greimel, F; Höller, N; Zeiringer, B; Melcher, A; Schmutz, S
9th International Symposium on Ecohydraulics 2012
(2012) Habitat modelling: Example - Case study Piave/Mis river
Autoren: Mielach, C; Schinegger, R; Zeiringer, B; Cesca, M
Internal Pertner Meeting of SEE Hydropower 2012
(2011) A Water Framework Directive (WFD) compliant determination of ecologically acceptable flows for Alpine Rivers in Austria (invited presentation)
Autoren: Zitek, A., Jäger, P., Zeiringer, B.
Green Energy and Sustainable Development in the Alps 2011
(2011) Hydro-morphologically related variance in benthic drift and its importance for numerical habitat modelling
Autoren: Hauer, C., Unfer, G., Graf, W., Leitner, P., Zeiringer, B., Habersack, H.
141st Annual Meeting of the American Fisheries Society AFS 2011 - New Frontiers in Fisheries Management and Ecology: Leading the Way in a Changing World
(2011) Hydropeaking - Refreshing News from Austria
Autoren: Melcher A.H., T. Cassidy, W. Graf, F. Greimel, G. Unfer, B. Zeiringer, S. Schmutz
Researcher Meeting of the Centre for Environmental Design of Renewable Energy Cedren EnviPEAK 2011
(2010) Hydro peaking in Austria and its effects on aquatic organisms
Autoren: Schmutz, S., A. Melcher, M. Jungwirth, R. Schinegger, G. Unfer, C. Wiesner, B. Zeiringer,
8th International Symposium on Ecohydraulics 2010
(2010) Fischökologische Auswirkungen der energiewirtschaftlichen Nutzung von Fließgewässern
Autoren: Zeiringer, B.
FIBER Seminar "Fische und Fischer in Bedrängnis"
(2009) Auswirkungen der Restwasserabgabe auf den ökologischen Zustand von Ausleitungsstrecken
Autoren: Schmutz, S., G. Unfer, B. Zeiringer, M. Jungwirth
Gewässerbewirtschaftung im Spannungsfeld zwischen Ökonomie und Ökologie 2009
(2009) The effect of flow reduction on microphytobenthos development in an alpine river stretch using novel fluorescence techniques
Autoren: Ganglbauer, A.; Bondar-Kunze, E.; Hein T.; Zeiringer B.
European Geosciences Union EGU General Assembly 2009
(2008) ASSESSING ENVIRONMENTAL FLOWS IN AUSTRIAN RIVERS
Autoren: B. Zeiringer, G. Unfer, S. Schmutz & M. Jungwirth
Austrian-French Workshop 2008 - Hydropower in the context of implementing the EU Water Framework Directive
(2008) Bedeutung fischökologischer Forschung an der Universität für Bodenkultur zum Erhalt und zur Wiederherstellung intakter Fließgewässer
Autoren: Schmutz, S., Haidvogl, G., Hinterhofer, M., Hohensinner, S., Jungwirth, M., Melcher, A., Muhar, S., Poppe, M., Preis, S., Schinegger, R., Trautwein, C., Unfer, G., Waidbacher,H., Wiesner, C., Zeiringer, B.
150 Jahre Fischforschung in Österreich 2008
(2007) ASSESSING ENVIRONMENTAL FLOWS IN AUSTRIAN RIVERS
Autoren: ZEIRINGER, B.
6th International Symposium on Ecohydraulics 2007
(2006) Environmental flow assessment: Case studies at three hydropower plants in Austria
Autoren: ZEIRINGER, B.
European Geosciences Union EGU General Assembly 2006
(2006) ASSESSING AND VALIDATING ENVIRONMENTAL FLOWS IN AUSTRIAN RIVERS
Autoren: ZEIRINGER, B.
24th FAO/EIFAC Symposium on hydropower, flood control and water abstraction 2006 - Implications for fish and fisheries
Wasserkraftplanung Badam – ein Fallbeispiel für nachhaltige Wasserkraft an bestehender Bewässerungsinfrastruktur mit Potential zur Replikation
Autoren: Schwedhelm, H; Zhumabaev, A; Siegfried, T; Hägele, T; Kopecki, I; Alapfy, B; Hayes, DS; Zeiringer, B; Jorde, K; Rüther, N
The influence of repeated hydropeaking events on early live stages of European grayling (Thymallus thymallus) and common nase (Chondrostoma nasus)
Autoren: Auer, S.; Führer, S.; Hayes, D.S.; Zeiringer, B.; Schmutz, S.
Unravelling the complex relationship between artificial flow fluctuations and cyprinid fish: a comprehensive analysis
Autoren: Hayes, D.S.; Auer, S.; Schmutz, S.; Zeiringer, B.; Greimel, F.; Piggott, J.; Führer, S.
Impacts of Alternative Scenarios and Mitigation Techniques - Fisheries and Aquatic Ecology
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
E-Flows in Central Asia: tools and methods, case study Koksu
Autoren: Schneider, M; Zeiringer, B; Kopecki, I; Karimov, B; Karimov, E; Hägele, T; Coeck, J; Schmutz, S; Hayes, DS
Impacts of Alternative Scenarios and Mitigation Techniques - Fisheries and Aquatic Ecology
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Impacts of Alternative Scenarios and Mitigation Techniques - Fisheries and Aquatic Ecology
Autoren: Seliger, C; Schmutz, S; Zeiringer, B;
Example case study: Piave/Mis Rivers (Current results)
Autoren: Mielach, C; Zeiringer, B; Schinegger, R; Cesca, M
Habitat preferences of snow trout (Schizothorax eurystomus) in Uzbek rivers
Autoren: Hayes, DS; Karimov, E; Karimov, B; Coeck, J; Schmutz, S; Zeiringer, B
Effects of spatio-temporal variability of hydropeaking on juvenile fish
Autoren: Merl, K; Zeiringer, B; Auer, S; Führer, S; Greimel, S; Hayes, D; Schmutz S
Habitat modelling - step-by-step tutorial
Autoren: Zeiringer, B; Mielach, C; Schinegger, R
Nachhaltige Kleinwasserkraft-Entwicklung in Zentralasien – Hydro4U in der Planungsphase
Autoren: Alapfy, B; Siegfried, T; Zeiringer, B; Hayes, DS; Roth, M; Schwedhelm, H; Verhelst, P; Coeck, J; Rüther, N
European innovations in Kyrgyzstan: Development of the At-Bashy small hydro project
Autoren: Alapfy, B; Ramos, I; López, R; Siegfried, T; Hayes, DS; Zeiringer, B; Verhelst, P; Roth, M; Schwedhelm, H; Coeck, J; Rüther, N