Do invasive quagga mussels alter CO 2 dynamics in the Laurentian Great Lakes

摘要: The Laurentian Great Lakes have experienced unprecedented ecological and environmental changes, especially after the introduction of invasive quagga mussel (Dreissena rostriformis bugensis). While impacts on functions been widely recognized, response carbon dynamics to species remains largely unknown. We report new CO2 data showing significant increases in pCO2 (up 800 μatm Lake Michigan) emission fluxes most compared those prior or during early stage colonization mussels. increased supersaturation is prominent Huron Michigan, followed by Ontario Erie, but no evident change was observed Superior. This trend mirrors infestation extent mussels consistent with decline primary production increase water clarity pre- post-Dreissena introduction, revealing a close linkage between dynamics. become source atmosphere, emitting >7.7 ± 1.0 Tg-C annually, which higher than organic burial rate global inland-seas attesting role regional/global budget cycling.