Sources of dissolved methane in Lake Biwa

  title={Sources of dissolved methane in Lake Biwa},
  author={Jun Murase and Yuji Sakai and Atsuko Sugimoto and Kenji Okubo and Mitsuru Sakamoto},
The spatial distribution and seasonal variation in the concentration and carbon isotopic composition of dissolved methane in a river–lake ecosystem were studied in Lake Biwa, Japan, and its tributary rivers. Methane concentrations in all subsystems examined were supersaturated with respect to the atmosphere. The epilimnion showed higher concentrations of dissolved methane than the hypolimnion in the pelagic zone. Peak methane concentrations were observed at the thermocline. The largest amount… CONTINUE READING
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