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Sedimentation processes of legacy and emerging organic micropollutants in the Kongsfjord-Krossfjord systems in a climate change scenario (SED-POPs)
IADC_id: 168
active
Call year: 2020
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Project description:
Arctic fjord ecosystems are intimately linked to sea/ice dynamics and inputs of glacial melting waters; these complex processes may be perturbed by global warming, ocean acidification, loss of sea-ice and anthropogenic pressure on local and global scale. The impact of human activities on the marine ecosystems involves the continuous release of hundreds of thousands of “old” and “new” organic pollutants, but there is only little knowledge on their distribution and final fate in the Arctic regions. The project aims at improving our understanding of the main physico-chemical variations in Kongsfjorden-Krossfjorden systems (Svalbard, Norway) related to anthropogenic pollution and climate change, focusing on the distribution of legacy persistent and emerging organic pollutants through the water column, with particular attention to their transport and deposition in suspended matter and bottom sediment. Comparative research on fjord systems, currently less impacted than Kongsfjorden, such as the Krossfjorden, will be a key task to deepen the knowledge of the effects of global change on both large-scale circulation of pollutants and local inputs in the Arctic environment. Sampling of water column, suspended particles and surface sediments over different seasons, are aimed at determining the influence of ice melting in sedimentation fluxes and contamination dynamics: different classes of legacy and emerging organic micro-pollutants will be considered (i.e. PAHs, PCBs, Current Use Pesticides, pharmaceutical residues, including antibiotics, Personal Care Products PCPs, endocrine disrupting compounds-EDCs, PFAAs) in water, suspended particles and surface sediments, together with the determination of grain size, Corg, Ntot, C/N ratio, ?13C and ?15N. Sediment will be analysed for selected classes of organic contaminants as tracers of long-term human impacts, evolution of the contaminant fluxes through time and to estimate TSM (total suspended matter), POC and total Nitrogen.
National/International Cooperation:
University of Siena, Dept. of Environmental Science; The Arctic University of Norway, University of Tromso; the British Antarctic Survey-BAS
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