Description: Das Projekt "Metal Bioavailability to Aquatic Photosynthetic Organisms in Changing Environment (BioChEn)" wird vom Umweltbundesamt gefördert und von Universite de Geneve, Institut F.-A. Forel durchgeführt. The interactions of climate variability and the changes in the surface radiation are anticipated to affect the aquatic biogeochemical cycles and thus to increase the uncertainty in predicting environmental risks associated with chemical pollution. Therefore the understanding of the processes that govern the contaminant (e.g. toxic metal) interactions with different biotic and abiotic components in changing environment is of crucial importance for development of the predictive models for environmental risk assessment and sustainable water quality in 21st century. The present project address the major question of how the interacting effects of toxic metals, increased solar radiation and natural organic matter (NOM) alterations will impact the photosynthetic organisms in surface waters. The photosynthetic organisms, phytoplankton and macrophytes, are major players in the surface water primary productivity and represent the basis of the aquatic food chain. The following key questions will be addressed: (i) To what extent increased solar radiation affect the speciation of metal - NOM complexes?; (ii) How does the combination of enhanced solar radiation and NOM - alteration affect metal bioavailability?; (iii) What would be consequences for the photosynthetic organisms in the surface waters? The project outcomes are expected to contribute significantly in the filling of the existing gaps in the knowledge and reducing the uncertainty, concerning the combined action of chemical and other environmental stressors on the two major groups of the aquatic primary producers.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Biogeochemie ? Makrophyten ? Phytoplankton ? Schadstoffbelastung ? Schadstoffwirkung ? Klimavariabilität ? Schmutzstoff ? Stress ? Organisches Material ? Wirkung ? Metall ? Wasserqualität ? Umweltrisikobewertung ? Bewässerung ? Bewertung ? Bioverfügbarkeit ? Chemikalien ? Rechtsverfahren ? Gewässerqualität ? Oberflächengewässer ? Toxizität ? Umweltgefährdung ? Wasser ? Wirkung ? Umwelt ? Nahrungskette ? Organismen ? Produktivität ? Risiko ? Solarstrahlung ? Lebensmittel ? Strahlung ? Primärproduktion ? FRAGE ? Vermehrung ? GEGENWART ? GELOEST ? GEMISCHT ? GRUPPE ? MISCHUNG ? NACHHALTIG ? ZUSCHUETTUNG ? BESTEHEND ? Toxische Metalle ? BESTANDTEIL ? OBERFLAECHE ? PRODUZENT ? VERARBEITEN ? ENTWICKLUNG ? PROJEKT ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2011-09-01 - 2014-08-31
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