Science. 1979 Jan 12;203(4376):168-71. doi: 10.1126/science.203.4376.168.
Benthic foraminiferal faunas in a piston core from 3331 meters at 44 degrees N on the Mid-Atlantic Ridge show striking variations in the relative abundance of species. Uvigerina peregrina, which is broadly distributed today in the South Atlantic and in the Pacific in water that has been long isolated from the surface, is absent in the North and Equatorial Atlantic at depths occupied by highly oxygenated North Atlantic deep water. This species dominated the fauna at this site for much of the past 150,000 years. It is suggested that North Atlantic deepwater production was much reduced or eliminated at times of Uvigerina peregrina abundance, as a result of cooling and stratification of the Norwegian Sea surface, coincident with the times of the southward migration of the polar front in the North Atlantic.
在中大西洋脊北纬 44 度 3331 米的岩芯中，底栖有孔虫动物群的物种相对丰度呈现出显著的变化。今天，在南大西洋和太平洋的远离表层的水域中广泛分布的漂泊有孔虫（Uvigerina peregrina），在北大西洋和赤道大西洋的高含氧的北大西洋深层水域所占据的深度处却不存在。在过去的 15 万年中，该物种在很大程度上主导了该地点的动物群。有人认为，北大西洋深层水的产量在漂泊有孔虫丰度较高的时期减少或停止了，这是因为挪威海表面冷却和分层的结果，与北大西洋极锋向南迁移的时期相吻合。
