Abstract: According to palaeoclimatic and modern instrumental data,numerous studies have indicated that the Arctic climate has undergone a significant warming during the past 100 years,and this may lead to significant impact on the fragile lake ecosystem. In this study,we collected a lake sediment core from the Ny-lesund of Svalbard and determined the concentrations of four pigments including chlorophyll derivatives,total carotenoids,oscillaxanthin and myxoxanthophyll in the sediments. Combined with other physical a...

Key words: Arctic, lake sediments, pigments, primary productivity, climate change