Organisationseinheit: Deutschland. Umweltbundesamt. Fachgebiet IV.1.2 - Biozide
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Dessau-Roßlau
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EthoCRED: a framework to guide reporting and evaluation of the relevance and reliability of behavioural ecotoxicity studies
(2024) Bertram, Michael G.; Ågerstrand, Marlene; Thoré, Eli S.J.; Allen, Joel; Balshine, Sigal; Brand, Jack A.; Brooks, Bryan W.; Dang, ZhiChao; Duquesne, Sabine; Ford, Alex; Jacob, Stefanie; Maack, Gerd; Mohr, Silvia; Sahm, René
Behavioural analysis has been attracting significant attention as a broad indicator of sub-lethal toxicity and has secured a place as an important subdiscipline in ecotoxicology. Among the most notable characteristics of behavioural research, compared to other established approaches in sub-lethal ecotoxicology (e.g. reproductive and developmental bioassays), are the wide range of study designs being used and the diversity of endpoints considered. At the same time, environmental hazard and risk assessment, which underpins regulatory decisions to protect the environment from potentially harmful chemicals, often recommends that ecotoxicological data be produced following accepted and validated test guidelines. These guidelines typically do not address behavioural changes, meaning that these, often sensitive, effects are not represented in hazard and risk assessments. Here, we propose a new tool, the EthoCRED evaluation method, for assessing the relevance and reliability of behavioural ecotoxicity data, which considers the unique requirements and challenges encountered in this field. This method and accompanying reporting recommendations are designed to serve as an extension of the “Criteria for Reporting and Evaluating Ecotoxicity Data (CRED)” project. As such, EthoCRED can both accommodate the wide array of experimental design approaches seen in behavioural ecotoxicology, and could be readily implemented into regulatory frameworks as deemed appropriate by policy makers of different jurisdictions to allow better integration of knowledge gained from behavioural testing into environmental protection. Furthermore, through our reporting recommendations, we aim to improve the reporting of behavioural studies in the peer-reviewed literature, and thereby increase their usefulness to inform chemical regulation.
Stoffkonzentrationen in urbanen Abflüssen
(2026) Nowak, Julia; Ullrich, Antje; Meier, Christiane; Fuchs, Stephan
In urbanen Gebieten stellen Kanalisationssysteme und Kläranlagen relevante Pfade für Stoffeinträgen ins Gewässer dar. Zur Entwicklung gezielter Maßnahmen sind die Einträge pfadspezifisch zu quantifizieren. Mit dem Stoffeintragsmodell MoRE (Modelling of Regionalized Emissions) ist das für alle Stoffe möglich, sofern eine repräsentative Datengrundlage der urbanen Abflusskomponenten vorliegt. Mit einheitlicher Probenahmestrategie und sensitiver Analytik erzeugte Messdaten ermöglichen die konsistente Ableitung repräsentativer Konzentrationen für Trockenwetterzuläufe, Kläranlagenabläufe, Mischwasserentlastungen und Regenwassereinleitungen. Ein wesentliches Kriterium bei der Auswertung ist der Anteil an Positivbefunde (Werte > Bestimmungsgrenze). Für 46 Stoffe konnten Medianwerte für mindestens eine Abflusskomponente ermittelt werden. Allerdings bestehen weiterhin Unsicherheiten, insbesondere für die Komponenten Mischwasserentlastung und Regenwassereinleitung. Für diese Eintragspfade wird daher ein koordiniertes Monitoring zur Erweiterung des verfügbaren Datenkollektivs empfohlen. Im Beitrag wird das Vorgehen zur Ableitung der Modelleingangsdaten für 78 Stoffe beschrieben.
Quelle: KA Korrespondenz Abwasser, Abfall. 73 (2026), Heft 2, Seite 109
Integrated strategy for the assessment of aquatic and terrestrial bioaccumulation
(2026) Schlechtriem, Christian; Nendza, Monika; Kosfeld, Verena; Deutschland. Umweltbundesamt
The report proposes an integrated, tiered assessment strategy for aquatic and terrestrial bioaccumulation, combining in silico, in vitro, and invertebrate approaches to minimise vertebrate testing while maintaining the current level of environmental protection. 26 representative substances across diverse chemical classes were evaluated using fish, Hyalella azteca and in vitro hepatic biotransformation assays, supported by QSAR modelling and physicochemical parameter analysis for comparability of test results. The study shows that New Approach Methods can be used to effectively assess bioaccumulation potential, reducing reliance on animal tests. Yet, for challenging substances, critical review and complementary methods remain essential. Special guidance is provided for assessing accumulation in air-breathing organisms.
Integrated strategy for the assessment of aquatic and terrestrial bioaccumulation
(2026) Schlechtriem, Christian; Nendza, Monika; Kosfeld, Verena; Deutschland. Umweltbundesamt
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