Percy FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa.
Percy FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa.
Mar Pollut Bull. 2014 Dec 15;89(1-2):16-19. doi: 10.1016/j.marpolbul.2014.10.043. Epub 2014 Nov 4.
Only 52 litter items (>1cm diameter) were observed in 10,467 km of at-sea transects in the African sector of the Southern Ocean. Litter density north of the Subtropical Front (0.58 items km(-2)) was less than in the adjacent South Atlantic Ocean (1-6 items km(-2)), but has increased compared to the mid-1980s. Litter density south of the Subtropical Front was an order of magnitude less than in temperate waters (0.032 items km(-2)). There was no difference in litter density between sub-Antarctic and Antarctic waters either side of the Antarctic Polar Front. Most litter was made of plastic (96%). Fishery-related debris comprised a greater proportion of litter south of the Subtropical Front (33%) than in temperate waters (13%), where packaging dominated litter items (68%). The results confirm that the Southern Ocean is the least polluted ocean in terms of drifting debris and suggest that most debris comes from local sources.
在南大洋的非洲海域，我们在 10467 公里的海上横断面上仅观察到 52 个垃圾（>1 厘米直径）。副热带锋以北的垃圾密度（0.58 个/km²）小于相邻的南大西洋（1-6 个/km²），但与 20 世纪 80 年代中期相比有所增加。副热带锋以南的垃圾密度比温带水域低一个数量级（0.032 个/km²）。在南极极锋两侧的亚南极和南极水域，垃圾密度没有差异。96%的垃圾是塑料制成的。与渔业相关的碎片在副热带锋以南的垃圾中占比（33%）大于温带水域（13%），在温带水域，包装占垃圾的主导地位（68%）。研究结果证实，就漂流碎片而言，南大洋是污染最少的海洋，并表明大多数碎片来自当地来源。
