The use of dinoflagellate cysts to separate human-induced from natural variability in the trophic state of the Po River discharge plume over the last two centuries.
The use of dinoflagellate cysts to separate human-induced from natural variability in the trophic state of the Po River discharge plume over the last two centuries.
复制标题
使用甲藻包囊来区分过去两个世纪以来波河排放羽流的营养状态中人为引起的变化和自然变化。
DOI：
10.1016/j.marpolbul.2011.10.012
复制
发表时间：
2012
影响因子：
5.8
通讯作者：
G. Versteegh
中科院分区：
文献类型：
--
作者：
K. Zonneveld;Liang Chen;Rehab Elshanawany;H. Fischer;Mirja Hoins;M. I. Ibrahim;D. Pittauerová;G. Versteegh
为了深入了解自然和/或人为引起的变化，在过去的两个世纪的Po河排放羽流的远端部分的营养状态，高时间分辨率甲藻孢囊记录建立在三个网站。孢囊生产率似乎反映了河流排放的自然变化，而孢囊协会反映了上层沃茨的营养状态，这反过来又与农业发展有关。早在1890年和1920年发现的Lingulodinium machaerophorum和Stelladinium stellatum的丰度增加对应于意大利工业革命的开始以及整个欧洲氨的第一次化学生产和分散。1955年后，这些物种和Polykrikos schwartzii，Brigantedinium spp.和Pentapharsodinium dalei对应于农业诱导的肥大状况的改变。自1987年以来，水质略有改善。
To obtain insight into the natural and/or human-induced changes in the trophic state of the distal portion of the Po River discharge plume over the last two centuries, high temporal resolution dinoflagellate cyst records were established at three sites. Cyst production rates appear to reflect the natural variability in the river’s discharge, whereas cyst associations reflect the trophic state of the upper waters, which in turn can be related to agricultural development. The increased abundances of Lingulodinium machaerophorum and Stelladinium stellatum found as early as 1890 and 1920 correspond to the beginning of the industrial revolution in Italy and the first chemical production and dispersion of ammonia throughout Europe. After 1955, the increased abundances of these species and of Polykrikos schwartzii, Brigantedinium spp. and Pentapharsodinium dalei correspond to agriculturally induced alterations of the hypertrophic conditions. A slight improvement in water quality can be observed from 1987 onward.