GEOCHEMICAL ANALYSIS TO DETERMINE THE SOURCES OF LAKE SEDIMENTS FROM AMANDA BAY, EAST ANTARCTICA

doi:10.3724/SP.J.1084.2012.00384

Abstract

Abstract: Two short lake sediment cores EPI and PI were collected at N island, Amanda Bay, East Antarctica during 2007-2008 seasons. The lithology and sedimentology of EPI profile indicate that it was a dominance of peat deposit. The PI sediments were composed of black mud, contained many penguin feathers and bones, and had a strong and unpleasant smell of penguin guano. Elemental concentrations were analyzed on the sediments of EPI and PI, local bedrock and lake algae. The results indicate that elemental concentrations in the sediments of EPI were contributed mainly from bedrock and lake algae. The abundance of TC, TN, TP, Cu, Zn, Hg and Se in PI sediments were much higher than those in local bedrock, they were mainly from emperor penguin guano input while element Pb was contributed mainly from geochemical background. For the first time, this study demonstrates that emperor penguin transports a lot of marine-derived nutrients as well as much heavy metal pollutants onto lake ecosystems.

Key words: Amanda Bay, emperor penguin, guano, lake sediment, geochemical analysis, East Antarctica

Huang Tao, Sun Liguang. GEOCHEMICAL ANALYSIS TO DETERMINE THE SOURCES OF LAKE SEDIMENTS FROM AMANDA BAY, EAST ANTARCTICA[J]. ADVANCES IN POLAR SCIENCE, 2012, 24(4): 384-390.

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