Peat profiles of Lake Faulersee

Remains of chironomid larvae from cores of the ancient Lake Faulersee in northern Germany were examined. Pollen, radiocarbon datings, and geochemical data were used to develop the chronology of the Late-Glacial Period in Lake Faulersee and to validate interpretations made by chironomid data. Factors influencing the composition of the subfossil chironomid assemblages were assessed. Our data indicate fluctuations of temperature, lake-level, and trophic state in the Late-Glacial. Furthermore, we explain a discontinuous sequence found in the cores of Lake Faulersee pertaining to a refilling event about 5,800 cal years before present (BP).

本研究对德国北部古福勒湖（Lake Faulersee）岩芯中的摇蚊幼虫（chironomid larvae）残骸开展了系统分析。研究借助孢粉、放射性碳测年与地球化学数据，构建了福勒湖晚冰期的年代序列，并对基于摇蚊数据得出的古环境解译结果进行了验证。本研究同时评估了影响亚化石摇蚊组合（subfossil chironomid assemblages）组成的各类驱动因素。研究数据显示，晚冰期区域的温度、湖水位及营养状态均存在显著波动。此外，本研究对福勒湖岩芯中发现的不连续沉积序列进行了解析，该序列对应约5800个校准年前（cal BP）的湖泊重新充填事件。