Harland Rex, Nordberg Kjell, Filipsson Helena L
DinoData Services, 50 Long Acre, Bingham, Nottingham NG13 8AH, UK.
Sci Total Environ. 2006 Feb 15;355(1-3):204-31. doi: 10.1016/j.scitotenv.2005.02.030. Epub 2005 Jun 9.
This high-resolution study of the latest Holocene dinoflagellate cyst record from Gullmar Fjord, on the west coast of Sweden, provides evidence for the recognition of two major dinoflagellate communities within the fjord over the last 85 years. These communities may have their origins with the history of cultural eutrophication within the region, but are more likely to be associated with the wider phenomenon of the North Atlantic Oscillation and/or the complex hydrographical response of the fjord to various changing climatic environments between 1915 and 1999. The changing dinoflagellate cyst populations are compared in detail with the many hydrographical parameters available from this well studied fjord with its long instrumental records. Indeed the dinoflagellate cysts fail to demonstrate a convincing ongoing eutrophication record for the fjord but do show a major change in the cyst assemblages at about 1969/1970 at a time when the NAO was changing from a negative phase to the present-day positive phase. Gullmar Fjord is important in the history of dinoflagellate cyst studies, being the site of the 1954 study by Erdtman in which viable cysts, produced within the phytoplankton, were first documented within the water column.
这项对瑞典西海岸古尔马峡湾最新全新世甲藻孢囊记录的高分辨率研究，为识别该峡湾在过去85年里的两个主要甲藻群落提供了证据。这些群落可能起源于该地区的文化富营养化历史，但更有可能与北大西洋涛动这一更广泛的现象和/或1915年至1999年间峡湾对各种变化的气候环境的复杂水文响应有关。将变化的甲藻孢囊种群与从这个经过充分研究且有长期仪器记录的峡湾获得的许多水文参数进行了详细比较。事实上，甲藻孢囊未能证明该峡湾有令人信服的持续富营养化记录，但确实显示出在1969/1970年左右，当北大西洋涛动从负相位转变为当前正相位时，孢囊组合发生了重大变化。古尔马峡湾在甲藻孢囊研究历史中很重要，它是1954年埃尔德曼研究的地点，在该研究中首次记录了浮游植物产生的活孢囊出现在水柱中。
