FN Archimer Export Format
PT J
TI Influence of environmental and anthropogenic factors on the composition, concentration and spatial distribution of microplastics: A case study of the Bay of Brest (Brittany, France)
BT 
AF FRERE, L.
   PAUL-PONT, I.
   RINNERT, Emmanuel
   PETTON, Sebastien
   JAFFRE, J
   BIHANNIC, Isabelle
   SOUDANT, P.
   LAMBERT, C.
   HUVET, Arnaud
AS 1:1;2:1;3:2;4:3;5:1;6:1;7:1;8:1;9:3;
FF 1:;2:;3:PDG-REM-RDT-LDCM;4:PDG-RBE-PFOM-PI;5:;6:;7:;8:;9:PDG-RBE-PFOM-PI;
C1 IFREMER, IUEM,IRD, UBO,LEMAR UMR 6539, CNRS, Rue Dumont dUrville, F-29280 Plouzane, France.
   IFREMER, Lab Detect Capteurs & Mesures, Ctr Bretagne, CS 10070, F-29280 Plouzane, France.
   IFREMER, LEMAR UMR 6539, CNRS, UBO,IRD,Ctr Bretagne,CS 10070, F-29280 Plouzane, France.
C2 UBO, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
   ARGENTON
SE PDG-REM-RDT-LDCM
   PDG-RBE-PFOM-PI
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 4.358
TC 263
UR https://archimer.ifremer.fr/doc/00379/48994/49438.pdf
   https://archimer.ifremer.fr/doc/00379/48994/49439.pdf
   https://archimer.ifremer.fr/doc/00379/48994/49440.pdf
   https://archimer.ifremer.fr/doc/00379/48994/51083.pdf
LA English
DT Article
BO Albert Lucas
DE ;Microplastic;Coastal ecosystem;Surface water;Sediment;Raman spectroscopy;Hydrodynamic;Dispersal particle modelling
AB The concentration and spatial distribution of microplastics in the Bay of Brest (Brittany, France) was investigated in two surveys. Surface water and sediment were sampled at nine locations in areas characterized by contrasting anthropic pressures, riverine influences or water mixing. Microplastics were categorized by their polymer type and size class. Microplastic contamination in surface water and sediment was dominated by polyethylene fragments (PE, 53–67%) followed by polypropylene (PP, 16–30%) and polystyrene (PS, 16–17%) microparticles. The presence of buoyant microplastics (PE, PP and PS) in sediment suggests the existence of physical and/or biological processes leading to vertical transfer of lightweight microplastics in the bay. In sediment (upper 5 cm), the percentage of particles identified by Raman micro-spectroscopy was lower (41%) than in surface water (79%) and may explain the apparent low concentration observed in this matrix (0.97 ± 2.08 MP kg−1 dry sediment). Mean microplastic concentration was 0.24 ± 0.35 MP m−3 in surface water. We suggest that the observed spatial MP distribution is related to proximity to urbanized areas and to hydrodynamics in the bay. A particle dispersal model was used to study the influence of hydrodynamics on surface microplastic distribution. The outputs of the model showed the presence of a transitional convergence zone in the centre of the bay during flood tide, where floating debris coming from the northern and southern parts of the bay tends to accumulate before being expelled from the bay. Further modelling work and observations integrating (i) the complex vertical motion of microplastics, and (ii) their point sources is required to better understand the fate of microplastics in such a complex coastal ecosystem. 
PY 2017
PD JUL
SO Environmental Pollution
SN 0269-7491
PU Elsevier Sci Ltd
VL 225
UT 000401679200023
BP 211
EP 222
DI 10.1016/j.envpol.2017.03.023
ID 48994
ER

EF