High resolution palaeoenvironmental reconstruction from Lake Suigetsu, Japan (IAP2-18-54)

水越湖现有的古环境资料主要是基于孢粉调查。然而，植物物种的响应（以及它们产生的花粉记录）往往滞后于引起气候变化（在10年到100年的尺度上）。因此，拟议中的博士研究生将专注于两个互补的古环境代用指标——生物标志物化合物特异性同位素分析（包括dD分析和提取硅藻（d18O）的稳定同位素分析），这两个代用指标可能对气候扰动表现出更大的敏感性（即更快的反应）。

The existing palaeoenvironmental data from Lake Suigetsu are primarily based upon palynological investigation. However, the response of plant species (and hence the pollen records that they produce) often lags behind the causative climatic changes (at a ~decadal to centennial scale). This proposed PhD studentship will therefore focus on two complementary palaeoenvironmental proxies that might be expected to demonstrate greater sensitivity (i.e. more rapid response) to climatic perturbation - biomarker compound specific isotope analysis (including dD analysis and stable isotopic analysis on extracted diatoms (d18O).