Journal Article 4 heartwood Methane 3 OP0UW79H66 3 Research Support, Non-U.S. Gov't 3 sapwood 3 Research Support, U.S. Gov't, Non-P.H.S. 2 mehr ... Soil 2 059QF0KO0R 1 Allometry 1 Archaea 1 CO2 reduction pathway 1 Populus 1 Populus deltoides 1 Water 1 annual variability 1 carbon allocation 1 conduit widening 1 drained soils 1 hydraulic conductance 1 hydraulic model 1 in situ methane (CH4) flux 1 methanogenesis 1 methanogens 1 methanotrophs 1 methylotrophic methanogenesis 1 poplar (Populus davidiana) 1 sapflow 1 stem CH4 emission 1 temperate forest 1 weniger ...