Abstract:<p>Oxygen dynamics in lakes and reservoirs are changing worldwide due to human activities. Changing hypolimnetic oxygen conditions will substantially alter carbon cycling in aquatic ecosystems, as oxygen dynamics near the sediment-water interface regulate whether carbon inputs will be buried, respired as carbon dioxide, or respired as methane. At the decadal scale, warming temperatures and increased nutrient loads are increasing the prevalence and duration of anoxia. Conversely, at the daily scal… Show more
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