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Veröffentlichung Hygienisch-mikrobiologische Untersuchungen eines Fließgewässers (Weiße Elster) im Einzugsgebiet eines Badegewässers (Talsperre Pirk)(2016) Feuerpfeil, Irmgard; Hummel, Annette; Mehlis, Anika; Renner, PeterÜber einen Zeitraum von ca. zwei Jahren wurde die mikrobiologische Belastung eines Flusses im Einzugsgebiet einer Talsperre, die als Badegewässer genutzt wird, untersucht. Dieser Flussbereich ist Vorfluter für drei Kläranlagen. Untersucht wurden die Parameter E. coli, coliforme Bakterien, intestinale Enterokokken, Clostridium perfringens (C. perfringens), somatische Coliphagen, Campylobacter, Adenoviren, Cryptosporidium-Oocysten und Giardia-Cysten. Durch die Abflüsse der Kläranlagen und auch andere diffuse Einleitungen sowie Abschwemmungen von landwirtschaftlichen Nutzflächen ist die Belastung des Flusses mit Krankheitserregern hoch. Die Wasserqualität an der Badestelle der Talsperre hingegen ist gut, lediglich Adenovirus- DNA kommt manchmal in höheren Konzentrationen vor. Die Befunde sprechen für ein hohes Selbstreinigungspotenzial der Talsperre, insbesondere in ihrer vergleichsweise flachen Vorsperre.
Quelle: http://www.dwa.deVeröffentlichung Metadata describing the Kharaa Yeröö River Basin Water Quality Database(2018) Hofmann, Jürgen; Ibisch, Ralf; Karthe, Daniel; Schweitzer, ChristianIn the framework of the BMBF funded project on Integrated Water Resources Management in Central Asia (Model region Mongolia, MOMO project, www.iwrm-momo.de) the objectives focused on supplementing, validating and extending the existing surveillance monitoring to the entire river basin for the time series 2006-2017. The MOMO monitoring programme was set up in order to observe seasonal variation in various water quality parameters along the main river course and its tributaries. A detailed sampling survey was carried out along the Kharaa River in the spring, summer and autumn of 2006 to 2017, extending from the headwaters in the Khentii Mountains to the outlet of the river basin. An additional continuous monthly monitoring programme for surface water quality was carried out upstream (Deed Guur) and downstream of Darkhan city (Buren Tolgoi) including the outlet of WWTP Darkhan in the time between 2007 and 2017. This strategy provides information for the efficient and effective design of future monitoring programmes with a focus on operational or investigative issues. The types of water sampling programmes included initial surveys as well as investigative and operational monitoring, point-source characterization, intensive surveys, fixed-station-network monitoring, groundwater monitoring, and special surveys involving chemical and biological monitoring. The water analyses have a focus on nutrients, heavy metals and metalloids, chloride, boron and the main physical water parameters. The dataset comprises also fluvial sediment analyses on heavy metals. In addition in 2017 a special hygienic monitoring (total coliforms, E. coli and fecal coliforms) has been carried out and was included in this database.Veröffentlichung Linking the Remote Sensing of Geodiversity and Traits Relevant to Biodiversity-Part II: Geomorphology, Terrain and Surfaces(2020) Lausch, Angela; Schaepman, Michael E.; Skidmore, Andrew; Schweitzer, ChristianThe status, changes, and disturbances in geomorphological regimes can be regarded as controlling and regulating factors for biodiversity. Therefore, monitoring geomorphology at local, regional, and global scales is not only necessary to conserve geodiversity, but also to preserve biodiversity, as well as to improve biodiversity conservation and ecosystem management. Numerous remote sensing (RS) approaches and platforms have been used in the past to enable a cost-effective, increasingly freely available, comprehensive, repetitive, standardized, and objective monitoring of geomorphological characteristics and their traits. This contribution provides a state-of-the-art review for the RS-based monitoring of these characteristics and traits, by presenting examples of aeolian, fluvial, and coastal landforms. Different examples for monitoring geomorphology as a crucial discipline of geodiversity using RS are provided, discussing the implementation of RS technologies such as LiDAR, RADAR, as well as multi-spectral and hyperspectral sensor technologies. Furthermore, data products and RS technologies that could be used in the future for monitoring geomorphology are introduced. The use of spectral traits (ST) and spectral trait variation (STV) approaches with RS enable the status, changes, and disturbances of geomorphic diversity to be monitored. We focus on the requirements for future geomorphology monitoring specifically aimed at overcoming some key limitations of ecological modeling, namely: the implementation and linking of in-situ, close-range, air- and spaceborne RS technologies, geomorphic traits, and data science approaches as crucial components for a better understanding of the geomorphic impacts on complex ecosystems. This paper aims to impart multidimensional geomorphic information obtained by RS for improved utilization in biodiversity monitoring. © 2020 by the authors.Veröffentlichung Microplastics in the Danube River Basin: a first comprehensive screening with harmonized analytical approach(2022) Braun, Ulrike; Bannick, Claus Gerhard; Bednarz, Marius; Kerndorf, Alexander; Lukas, Marcus; Obermaier, Nathan; Ricking, MathiasIn this study, carried out within the Joint Danube Survey 4, a comprehensive microplastic screening in the water column within a large European river basin from its source to estuary, including major tributaries, was realized. The objective was to develop principles of a systematic and practicable microplastic monitoring strategy using sedimentation boxes for collection of suspended particulate matter followed by its subsequent analysis using thermal extraction desorption-gas chromatography/mass spectrometry. In total, 18 sampling sites in the Danube River Basin were investigated. The obtained suspended particulate matter samples were subdivided into the fractions of >100 mikrom and <100 mikrom and subsequently analyzed for microplastic mass contents. The results showed that microplastics were detected in all samples, with polyethylene being the predominant polymer with maximum contents of 22.24 mikrog/mg, 3.23 mikrog/mg for polystyrene, 1.03 mikrog/mg for styrene-butadiene-rubber, and 0.45 mikrog/mg for polypropylene. Further, polymers such as different sorts of polyester, polyacrylates, polylactide, and natural rubber were not detected or below the detection limit. Additional investigations on possible interference of polyethylene signals by algae-derived fatty acids were assessed. In the context of targeted monitoring, repeated measurements provide more certainty in the interpretation of the results for the individual sites. Nevertheless, it can be stated that the chosen approach using an integrative sampling and determination of total plastic content proved to be successful. © 2022 The Authors