Characterisation of methanogenic and methanotrophic communities in the brazilian antarctic station wastewater, and samples from martel inlet, King George Island, Antarctica - Nakayama, Cristina Rossi; Kuhn, E.; Vieira Araújo, A. C.; Vazoller, R. F.; Pellizari, Vivian Helena (International Symposium on Microbial Ecology, 2008)