رسالة جامعية
Bioavailability and impact of sediment-bound endocrine disrupting chemicals on fish in context of flood events
| العنوان: | Bioavailability and impact of sediment-bound endocrine disrupting chemicals on fish in context of flood events |
|---|---|
| المؤلفون: | Müller, Anne-Katrin |
| المساهمون: | Hollert, Henner, Schäffer, Andreas, Segner, Helmut |
| المصدر: | Aachen 1 Online-Ressource (XIV, 178 Seiten) : Illustrationen, Diagrame (2020). doi:10.18154/RWTH-2020-04225 = Dissertation, RWTH Aachen University, 2020 |
| سنة النشر: | 2020 |
| المجموعة: | RWTH Aachen University: RWTH Publications |
| مصطلحات موضوعية: | info:eu-repo/classification/ddc/570, endocrine disruptors, estrogen activity, flood events, remobilization, sediment |
| جغرافية الموضوع: | DE |
| الوصف: | To date, numerous studies worldwide have demonstrated that sediments function as a sink for a great variety of environmental pollutants, among them are substances interfering with the endocrine system, so called endocrine disrupting chemicals (EDCs). Estrogenic activity evaluated in sediment samples across Europe via in vitro bioassays ranged from 0.02 up to 55 ng 17β-estradiol (E2) equivalents/g sediment. This is of particular concern since it is well documented that waterborne exposure to even low ng/L concentrations of EDCs can impair the reproduction of freshwater fish species. Feminization of male fish is one of the most notable adverse impacts of exposure to EDCs and the production of the female egg yolk protein vitellogenin (vtg) has been observed to coincide with impairment of gonadal development evident as intersex and, ultimately, reproductive failure. In contrast, little is known about the bioavailability and effects of sediment-associated EDCs on fish. Particularly when sediments are perturbed, e.g., during flood events, sediment-bound substances may become bioavailable. During the past decades, several extreme flood events have occurred in central Europe, including Germany. The likelihood and intensity of flood events have been predicted to increase as a result of global climate change. As consequence, the European Parliament established the Directive 2007/60/EC on the assessment and management of flood risk. In order to minimize adverse consequences of flood events to humans and the environment part of such risk assessment is the evaluation of potential sources of environmental pollution as result of flooding. The main objectives of the present thesis, as part of the interdisciplinary Project House Water - a project supported by the German Excellence initiative - , were to (i) investigate the bioavailability of sediment-bound EDCs under flood-like conditions when the sediment is subject to suspension; (ii) evaluate the uptake of sediment-bound EDCs during such a simulated flood event into fish and ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| العلاقة: | https://publications.rwth-aachen.de/record/787719Test; https://publications.rwth-aachen.de/search?p=id:%22RWTH-2020-04225%22Test |
| الإتاحة: | https://doi.org/10.18154/RWTH-2020-04225Test https://publications.rwth-aachen.de/record/787719Test https://publications.rwth-aachen.de/search?p=id:%22RWTH-2020-04225%22Test |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.6F767C63 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |