Evidence from experimental lakes shows the combination of nutrient enrichment and warming has a synergistic effect on rates of methane bubble production and release.
The new study is published in the Scientific Journal, Nature Climate:
Synergy between nutrients and warming enhances methane ebullition from experimental lakes. Thomas A. Davidson, Joachim Audet, Erik Jeppesen, Frank Landkildehus, Torben L. Lauridsen, Martin Søndergaard & Jari Syväranta, Nature Climate Changevolume 8, pages156–160 (2018)