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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Environmental Sources Marine & Wildlife Sign in to save

Distribution of small plastic fragments floating in the western Pacific Ocean from 2000 to 2001

Fisheries Science 2016 17 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Keiichi Uchida, Ryuichi Hagita, Toshifumi Hayashi, Tadashi Tokai

Summary

Researchers sampled plastic fragments floating in the western Pacific Ocean from 2000 to 2001, finding the highest concentrations in subtropical regions between 20-30 degrees latitude south and north of the equator. The study provides early baseline data on the distribution of small floating plastic in Pacific surface waters before the problem received widespread scientific attention.

Study Type Environmental

Sampling was conducted at 31 sites in the western Pacific Ocean from 2000 to 2001 with the aim of collecting plastic fragments with a neuston net (mesh size 1.00 mm × 1.64 mm). Small plastic fragments including microplastics (small fragments in the size range of 1.1–41.8 mm) were collected at multiple survey sites. Waters with high densities of small fragments were observed between 20°N and 30°N to the south of Japan and between 20S and 30S to the northeast of New Zealand (maxima of 6.63 × 102 and 2.03 × 102 pieces/ha, respectively). These waters are located to the west of the Ekman convergence zones related to trade winds in the subtropical gyres of the North and South Pacific Oceans. Nearly no small plastics were observed in the tropical circulation of the western Pacific Ocean.

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