<style face="normal" font="default" size="100%">Ice-based freshwater ecosystems</style>

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<style face="normal" font="default" size="100%">Ice-based freshwater ecosystems</style>

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<style face="normal" font="default" size="100%">Inorganic Nitrogen Uptake and Regeneration in Perennially Ice-Covered Lakes Fryxell and Vanda, Antarctica</style>