Chironomid analysis in northern Quebec and arctic Canada

为了更好地量化温度随时间的变化，将创建一个模型，使用保存在湖泊沉积物中的昆虫(摇蚊)幼虫来量化温度。这些幼虫将在从魁北克南部到埃尔斯米尔岛的190个湖泊中进行采样。每个分类群将被赋予一个最适温度，这些最适温度将被用来创建一个温度重建的定量模型。将从南北断面的许多湖泊中提取沉积物岩心，利用沉积物中保存的摇蚊群落重建过去1万年的温度。这些数据将显示气候随时间的自然变化，以及自人类活动开始以来观察到的变化。

To better quantify the changes of temperature through time, a model will be created to quantify temperature using the larvae of insects (chironomids) preserved in lake sediments. These larvae will be sampled in 190 lakes from southern Quebec to Ellesmere Island. Each taxa will be attributed a temperature optimum and these optima will be used to create a quantitative model for temperature reconstruction. Sediment cores will be extracted from many lakes in a north-south transect to reconstruct the temperature during the last 10 000 years using the communities of chironomids preserved in the sediments. The data will indicate the natural variation of climate through time, as well as the changes observed since anthropogenic activities have started.