It is found in lakes , ponds , freshwater sediment and marshy ground .
Methylomonas methanica is a Gram - negative bacterium that obtains its carbon and energy from methane , a metabolic process called methanotrophy .
Methylomonas methanica is found in lakes , ponds , freshwater sediment and marshy ground .
Methylomonas methanica is a Gram - negative bacterium that obtains its carbon and energy from methane , a metabolic process called methanotrophy .