Plant-mediated CH 4 transport and contribution of photosynthates to methanogenesis at a boreal mire: a 14 C pulse-labeling study

By M. Dorodnikov, K. Knorr, Y. Kuzyakov, M. Wilmking. 2011

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Abstract. Plant-mediated methane (CH4) transport and the contribution of recent photosynthates to methanogenesis were studied on two dominating vascular plant species – Eriophorum vaginatum and Scheuchzeria palustris – at three types of microrelief forms (hummocks – E. hummocks, lawns – E. lawns and hollows – S. hollows) of a boreal natural minerogenic, oligotrophic fen in Eastern Finland. 14C-pulse labeling of mesocosms with shoots isolated from entire belowground peat under controlled conditions allowed estimation of plant-mediated CH4 flux and contribution of recent (14C) photosynthates to total CH4. The results showed (i) CH4 flux increased in the order E. hummocks ≤ E. lawns

Subfields: Atmospheric Science, Ecology, Soil Science

View Paper: https://www.semanticscholar.org/paper/88ee18ef38f709c7b669aeffd17effbb64d84007