Helen Hill | Darwin Project
Microbes mediate the global marine cycles of elements, modulating atmospheric CO2 and helping to maintain the oxygen we all breath yet there is much about them scientists still don’t understand. Now, an award from the Simons Foundation will give researchers from the Darwin Project access to bigger, better computing resources to model these communities and probe how they work. Continue reading
Leaving the cold of a New England February behind, the Darwin team will be in full attendance at this year’s Ocean Sciences conference taking place February 23-28 in Honolulu, Hawaii.
Idealized equilibrium models have attributed the observed size structure of marine communities to the interactions between nutrient and grazing control. In a new paper in the Journal of Plankton Research Ben Ward and co-authors Stephanie Dutkiewicz and Mick Follows examine this theory in a more realistic context using a size-structured global ocean food-web model, together with a much simplified version of the same model for which equilibrium solutions are readily obtained.
Ward, B.A., S. Dutkiewicz, and M.J. Follows (2013), Top-down and bottom-up controls in a global size-structured plankton food-web model, Journal of Plankton Research , 0, 1-17, doi: 10.1093/plankt/fbt097
Fiksen, O., M.J. Follows and D.L. Aksnes (2013), Trait-based models of nutrient uptake in microbes extend the Michaelis-Menten framework, Limnology and Oceanography, vol. 58, pp. 193, doi: 10.4319/lo.2013.58.1.0193
Barton, A.D., Z.V. Finkel, B.A. Ward, D.G. Johns and M.J. Follows (2013), The roles of cell size and trophic strategy in North Atlantic diatom and dinoflagellate communities. Limnology and Oceanography, 58(1), 2013, 254-266, doi: 10.4319/lo.2013.58.1.0254
Kempes, C.P., S. Dutkiewicz, and M.J. Follows (2012), Growth, metabolic partitioning, and the size of microorganisms. Proceedings of the National Academy of Science, 109, 495-500, doi: 10.1073/pnas.1115585109
In this article, featured in the July issue of Microbe magazine, Darwin Project researcher Stephanie Dutkiewicz explains how, when used properly, models provide valuable insights into complex systems and sometimes yield surprising, even counterintuitive outcomes.
Dutkiewicz, S. (2012), Power in Modeling Virtual Marine Microbes, Microbes magazine, 7, 314-319, LINK
Ward, B.A., S. Dutkiewicz, O. Jahn, and M.J. Follows (2012), A size structured food-web model for the global ocean: Linking physiology, ecology and biogeography, Limnology and Oceanography, 57, 1877-1891, doi: 10.4319/lo.2012.57.6.1877