2023
DOI: 10.1029/2023jg007515
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Distinct Modes of Aged Soil Carbon Export in a Large Tropical Lake Basin Identified Using Bulk and Compound‐Specific Radiocarbon Analyses of Fluvial and Lacustrine Sediment

Abstract: The 14C content of sedimentary organic matter and specific organic molecules provide valuable information on the source and age of organic matter stored in sediments, but these data are limited for tropical fluvial and lake sediments. We analyzed 14C in bulk organic matter, palmitic acid (C16), and long‐chain n‐alkanoic acids (C24, C26, C28), within fluvial and lake sediments in the catchment of Lake Izabal, a large tectonic lake basin in Guatemala. We combined these measurements with bulk and compound‐specifi… Show more

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