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Metal Bioavailability to Aquatic Photosynthetic Organisms in Changing Environment (BioChEn)

Titel Englisch Metal Bioavailability to Aquatic Photosynthetic Organisms in Changing Environment (BioChEn)
Gesuchsteller/in Slaveykova-Startcheva Vera
Nummer 134627
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Institut F.-A. Forel Université de Genève
Hochschule Universität Genf - GE
Hauptdisziplin Andere Gebiete der Umweltwissenschaften
Beginn/Ende 01.09.2011 - 31.12.2014
Bewilligter Betrag 190'762.00
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Alle Disziplinen (2)

Disziplin
Andere Gebiete der Umweltwissenschaften
Andere Gebiete der Erdwissenschaften

Keywords (6)

metal speciation dynamics; bioavailability; toxicity; solar radiation; combined stress; dissolved organic matter

Lay Summary (Englisch)

Lead
Lay summary

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.

Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

Verantw. Gesuchsteller/in und weitere Gesuchstellende

Mitarbeitende

Publikationen

Publikation
Interactive effects of copper oxide nanoparticles and light to green alga Chlamydomonas reinhardtii
(2016), Interactive effects of copper oxide nanoparticles and light to green alga Chlamydomonas reinhardtii, in Aquatic Toxicology, 170, 120-128.
Effects of copper-oxide nanoparticles, dissolved copper and ultraviolet radiation on copper bioaccumulation, photosynthesis and oxidative stress in the aquatic macrophyte Elodea nuttallii
(2015), Effects of copper-oxide nanoparticles, dissolved copper and ultraviolet radiation on copper bioaccumulation, photosynthesis and oxidative stress in the aquatic macrophyte Elodea nuttallii, in Chemisphere, 128, 56-61.
Lead bioavailability to freshwater microalgae in the presence of dissolved organic matter: contrasting effect of model humic substances and marsh water fractions obtained by ultrafiltration
(2015), Lead bioavailability to freshwater microalgae in the presence of dissolved organic matter: contrasting effect of model humic substances and marsh water fractions obtained by ultrafiltration, in Aquatic geochemistry, 21, 217-230.
Photo-transformation of pedogenic humic acid and consequences for Cd(II), Cu(II) and Pb(II) speciation and bioavailability to green microalga
(2015), Photo-transformation of pedogenic humic acid and consequences for Cd(II), Cu(II) and Pb(II) speciation and bioavailability to green microalga, in Chemosphere, 138, 908-915.
Antagonistic and synergistic effects of light irradiation on the effects of copper on Chlamydomonas reinhardtii
(2014), Antagonistic and synergistic effects of light irradiation on the effects of copper on Chlamydomonas reinhardtii, in Aquatic toxicology, 155, 275-282.
Optimization of the C11-BODIPY581/591 Dye for the Determination of Lipid Oxidation in Chlamydomonas reinhardtii by Flow Cytometry
(2013), Optimization of the C11-BODIPY581/591 Dye for the Determination of Lipid Oxidation in Chlamydomonas reinhardtii by Flow Cytometry, in Cytometry A , 83(10), 952-961.
The Environmental Significance of Natural Nanoparticles
(2013), The Environmental Significance of Natural Nanoparticles, in Nature Education Knowledge , 4(8), 7.
Trace metal behavior in surface waters : emphasis on dynamic speciation, sorption processes and bioavailability
(2013), Trace metal behavior in surface waters : emphasis on dynamic speciation, sorption processes and bioavailability, in Archives des sciences, 65, 119-142.
Effects of extraction methods on the composition and molar mass distributions of exopolymeric substances of the bacterium Sinorhizobium meliloti
(2012), Effects of extraction methods on the composition and molar mass distributions of exopolymeric substances of the bacterium Sinorhizobium meliloti, in Bioresourse Technology , 114, 603-609.

Wissenschaftliche Veranstaltungen

Aktiver Beitrag

Titel Art des Beitrags Titel des Artikels oder Beitrages Datum Ort Beteiligte Personen
24th Annual Meeting SETAC Europe, Basel Poster Combined effects of copper and UVB radiation in single and multi-species algal assays 11.05.2014 Basel, Schweiz Slaveykova-Startcheva Vera; Cheloni Giulia;
VI All-Russian Congress of young biologists “SymBoSE-Russia-2013” Vortrag im Rahmen einer Tagung Interactions of vital and toxic elements with biotic and abiotic components in the aquatic systems 19.08.2013 Irkutsk, Russia, Russland Slaveykova-Startcheva Vera;
16th International Symposium on Field- and Flow-based Separations Vortrag im Rahmen einer Tagung Environmental flow field-flow fractionation coupled to ICP-MS for probing bioavailability potential of metal containing contaminants 30.06.2013 Pau, france, Frankreich Slaveykova-Startcheva Vera;
SENSE research school Speciation and bioavailability Vortrag im Rahmen einer Tagung Copper speciation and bioavailability to microalgae under realistic light conditions 07.06.2013 University of Wageningen, The Netherlands, Niederlande Cheloni Giulia;
23th Annual Meeting SETAC Europe Poster Understanding the role of DOM on metal bioavailability - a prerequisite for the narrowing the gap in lab-to-field extrapolation 12.05.2013 Glasgow, Grossbritannien und Nordirland Slaveykova-Startcheva Vera; Cosio Claudia; Cheloni Giulia;
23th Annual Meeting SETAC Europe Vortrag im Rahmen einer Tagung Combined exposure of Chlamydomonas reinhardtii to copper and solar-simulated radiation 12.05.2013 Glasgow, UK, Grossbritannien und Nordirland Cheloni Giulia; Slaveykova-Startcheva Vera; Cosio Claudia;
10th Swiss Geoscience Meeting Vortrag im Rahmen einer Tagung Zooming in on trace metal bioavailability to phytoplankton in surface waters 16.11.2012 Bern, Schweiz Slaveykova-Startcheva Vera;
International summer school for young researchers “Ecology of large water bodies and their watershed basins” Vortrag im Rahmen einer Tagung Interactions of toxic elements with biotic and abiotic components in the aquatic systems – ecotoxicological perspective 22.07.2012 Lake Baikal, B. Koty, Russia, Russland Cheloni Giulia; Slaveykova-Startcheva Vera;
Association for the Sciences of Limnology and Oceanography ASLO Aquatic Sciences Meeting Vortrag im Rahmen einer Tagung Size distributions of metal-colloidal organic matter complexes and metal availability to aquatic phytoplankton 08.07.2012 Lake Biwa, Otsu, Shiga, Japan, Japan Slaveykova-Startcheva Vera;


Selber organisiert

Titel Datum Ort
LAKE ECOLOGY AND TEMPORAL DYNAMICS 23.08.2014 Evian-les-Bains, Frankreich
“Ecology of large water bodies and their watershed basins” 24.08.2013 Bolshie Koty, Russia, Russland

Kommunikation mit der Öffentlichkeit

Kommunikation Titel Medien Ort Jahr
Referate/Veranstaltungen/Ausstellungen Jetez-vous à l'eau! Portes ouvertes à l'Institut Forel Westschweiz 2012
Referate/Veranstaltungen/Ausstellungen Journée « Futur en tous genres » Westschweiz 2012

Verbundene Projekte

Nummer Titel Start Förderungsinstrument
118989 Role of dissolved organic matter on metal speciation and biouptake by aquatic phytoplankton under condition of increased UV-B radiation 01.06.2008 SNF-Förderungsprofessuren
157173 Assessing metal bioavailability through transcriptome response in aquatic primary producers (continuation) 01.03.2015 Projektförderung (Abt. I-III)
138254 Assessing metal bioavailability through transcriptome response in aquatic primary producers 01.03.2012 Resource not found: 'ae7a8456-d388-4614-91fa-9226a7c1e277'
152897 Phytoplankton responses to trace metals in complex environment 01.01.2015 Projektförderung (Abt. I-III)

Abstract

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 underlying mechanisms 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 focuses on the metal bioavailability as a mechanistic concept allowing to quantitatively linking the physical and chemical processes in the medium surrounding biota to the induced biological effects. A unique array of novel and powerful technologies will be used to determine how the interacting effects of toxic metals, increased solar radiation and dissolved organic matter (DOM) alterations will impact the photosynthetic organisms in surface waters. The photosynthetic organisms 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 kinetic and size speciation of metal - DOM complexes of red-ox sensitive and insensitive metals?; (ii) How does the combination of enhanced solar radiation and DOM - alteration affect metal bioavailability?; (iii) What would be consequences for the photosynthetic organisms in the surface waters? Laboratory work investigating the impact of solar radiation on metal bioavailability and effect on phytoplankton and macrophyte will provide useful insights at a mechanistic level; the proposed small scale simulations in a microcosm will increase our understanding of complex parameters controlling bioavailability and its effect photosynthetic organisms in freshwaters. 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.
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