Journal
MARINE POLLUTION BULLETIN
Volume 119, Issue 1, Pages 48-63Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2017.03.034
Keywords
Marine debris; Marine litter; Modelling; Transboundary; Estuarine complex
Funding
- Federal Institute of Parana (IFPR, Paranagua campus)
- Coastal and Oceanic Systems Graduate Program (PGSISCO)
- Center of Marine Studies of Federal University of Parana (UFPR)
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Marine debris' transboundary nature and new strategies to identify sources and sinks in coastal areas were investigated along the Paranagua estuarine gradient (southern Brazil), through integration of hydrodynamic modelling, ground truthing estimates and regressive vector analysis. The simulated release of virtual particles in different parts of the inner estuary suggests a residence time shorter than 5 days before being exported through the estuary mouth (intermediate compartment) to the open ocean. Stranded litter supported this pathway, with beaches in the internal compartment presenting proportionally more items from domestic sources, while fragmented items with unknown sources were proportionally more abundant in the oceanic beaches. Regressive vector analysis reinforced the inner estuarine origin of the stranded litter in both estuarine and oceanic beaches. These results support the applicability of simple hydrodynamic models to address marine debris' transboundary issues in the land sea transition zone, thus supporting an ecosystem transboundary (and not territorial) management approach. (C) 2017 Elsevier Ltd. All rights reserved.
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