Anticyclonic eddies increase accumulation of microplastic in the North Atlantic subtropical gyre
Anticyclonic eddies increase accumulation of microplastic in the North Atlantic subtropical gyre
Birgit Westermayr Laurent Brach, Patrick Deixonne, Marie-France Bernard, Edmée Durand, Marie-Christine Desjean, Emile Perez, Erik van Sebille,
Alexandra ter Halle,
Anticyclonic eddies increase accumulation of microplastic in the North Atlantic subtropical gyre,
Marine Pollution Bulletin,Volume 126, 2018, Pages 191-196, ISSN 0025-326X,
Abstract:
There are fundamental gaps in our understanding of the fates
of microplastics in the ocean, which must be overcome if the severity of
this pollution is to be fully assessed. The predominant pattern is high
accumulation of microplastic in subtropical gyres. Using in situ
measurements from the 7th Continent expedition in the North Atlantic
subtropical gyre, data from satellite observations and models, we show
how microplastic concentrations were up to 9.4 times higher in an
anticyclonic eddy explored, compared to the cyclonic eddy. Although our
sample size is small, this is the first suggestive evidence that
mesoscale eddies might trap, concentrate and potentially transport
microplastics. As eddies are known to congregate nutrients and
organisms, this phenomenon should be considered with regards to the
potential impact of plastic pollution on the ecosystem in the open
ocean.
https://doi.org/10.1016/j.marpolbul.2017.10.077.(http://www.sciencedirect.com/science/article/pii/S0025326X17309232)
https://drive.google.com/open?id=1PeGCQ8RoCuVwY2qCvwcKa05F9vSVcBJt
