Microplastic concentrations in two Oregon bivalve species: Spatial, temporal, and species variability

Limnology and Oceanography Letters
By: , and 

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Abstract

Microplastics are an ecological stressor with implications for ecosystem and human health when present in seafood. We quantified microplastic types, concentrations, anatomical burdens, geographic distribution, and temporal differences in Pacific oysters (Crassostrea gigas) and Pacific razor clams (Siliqua patula) from 15 Oregon coast, U.S.A. sites. Microplastics were present in organisms from all sites. On average, whole oysters and razor clams contained 10.95 ± 0.77 and 8.84 ± 0.45 microplastic pieces per individual, or 0.35 ± 0.04 pieces g−1 tissue and 0.16 ± 0.02 pieces g−1 tissue, respectively. Contamination was quantified but not subtracted. Over 99% of microplastics were fibers. Material type was determined using Fourier‐transform infrared spectroscopy. Spring samples contained more microplastics than summer samples in oysters but not razor clams. Our study is the first to document microplastics in Pacific razor clams and provides important coast‐wide data to compare microplastic burden across species, seasons, and sites.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Microplastic concentrations in two Oregon bivalve species: Spatial, temporal, and species variability
Series title Limnology and Oceanography Letters
DOI 10.1002/lol2.10124
Volume 5
Issue 1
Year Published 2020
Language English
Publisher Wiley
Contributing office(s) Washington Water Science Center
Description 12 p.
First page 54
Last page 65
Country United States
State Oregon
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