Aquatic biomonitoring has become an essential task in Europe and many other regions as a consequence of strong anthropogenic pressures affecting the health of lakes, rivers, oceans and groundwater. A typical assessment of the environmental quality status, such as it is required by European but also North American and other legislation, relies on matching the composition of assemblages of organisms identified using morphological criteria present in aquatic ecosystems to those expected in the absence of anthropogenic pressures. Through decade-long and difficult intercalibration exercises among networks of regulators and scientists in European countries, a pragmatic biomonitoring approach was developed and adopted, which now produces invaluable information. Nonetheless, this approach is based on several hundred different protocols, making Next-Generation Biomonitoring of Aquatic Ecosystems
In several countries, the transfer of legal rights to rivers is being discussed as an approach for more effective water resources management. But what could this transfer mean in terms of a healthy river? We address this question by identifying the ecological requirements for naturally functioning rivers and then explore the demands which these requirements impose on society, the current policy responses to these requirements and whether the transfer of rights to the river could facilitate the preservation of healthy freshwater ecosystems.
AbstractApplication of floating solar panels is especially suited for the Netherlands, given the limited availability of land (surface area). Evides water company owns and operates several open storage reservoirs which can be used for installation of these panels, but the installations could affect the local environment, naturally occurring processes and water quality. In this research we evaluate leaching of various substances and possible effects based on a theoretical approach following the Analysis of Microbiological Safety of Drinking water (AMSD method). Besides the water quality issues, the ongoing research at Evides will focus on the effect of the floating solar installation on algae, microbiological and chemical parameters, birds, aquatic flora and fauna, and also look into possibilities of applying alternative storage possibilities using hydrogen.
Identifications were accomplished by comparison of the unknowns with authentic samples, using infrared spectra, retention times on two glc columns and, in a number of cases, mass spectra. One-hundred and twelve constituents were found for the first time. On 81 of them the authors have already reported in the form of a preliminary communication. The present article contains experimental details on the entire work.
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