@article{oai:oacis.repo.nii.ac.jp:00001961,
 author = {Uchida, Keiichi and Hagita, Ryuichi and Hayashi, Toshifumi and Tokai, Tadashi},
 issue = {6},
 journal = {Fisheries Science},
 month = {Oct},
 note = {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 20°S and 30°S to the northeast of New Zealand (maxima of 6.63 × 102 and 2.04 × 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., 2000年から2001年にかけて太平洋西部海域の31地点でニューストンネット（目合1.00mm×1.64mm）によるプラスチック微小片の採集を行った。マイクロプラスチック(5mm以下)を含むプラスチック微小片は，日本の南の北緯20—30度の海域とニュージーランド北東の南緯20—30度の海域で高密度に採集され（各々最高で6.63×102と2.04×102個/ha），これらの海域は北太平洋と南太平洋における亜熱帯循環内の漂流物収束帯の西端に位置する。赤道付近の熱帯循環内の採集点ではほとんど採集されなかった。},
 pages = {969--974},
 title = {Distribution of small plastic fragments floating in the western Pacific Ocean from 2000 to 2001},
 volume = {82},
 year = {2016}
}