Seasonal changes in the D / H ratio of fatty acids of pelagic microorganisms in the coastal North Sea - Heinzelmann, S. M.; Bale, N. J.; Villanueva, L.; Sinke-Schoen, D.; Philippart, C. J. M.; Sinninghe Damsté, J. S.; Schouten, S.; van der Meer, M. T. J. (Biogeosciences, 2016)