Song, H., J. Marshall, M.J. Follows, S. Dutkiewicz, and G. Forget. Source waters for the highly productive Patagonian shelf in the southwestern Atlantic. Journal of Marine Systems – early online edition.
The elemental composition of organic matter is remarkably constant throughout the world’s oceans, but phytoplankton are known to take up nutrients and carbon in quite variable ratios depending on light and nutrient conditions.
In a paper published online in the journal Global Biogeochemical Cycles last month, Darwin Project researchers David Talmy (MIT), Christopher Hill (MIT), Anna Hickman (Univ. of Southampton, England), and Mick Follows (MIT), in a collaboration with Adam Martiny (Univ. of California, Irvine), report on their work seeking to understand what ecosystem factors could cause the elemental composition of organic matter to remain stable and relatively constant (homeostatic), even when the phytoplankton can have quite variable composition. Continue reading
Ben A. Ward and Michael J. Follows (2016), Marine Mizotrophy Increases Trophic Transfer Efficiency, Mean Organism Size, and Vertical Carbon Flux, PNAS – early online edition.
Dutkiewicz, S., J.J. Morris, M.J. Follows, J. Scott, O. Levitan, S.T. Dyhrman, and I. Berman-Frank, 2015, Impact of Ocean Acidification on the Structure of Future Phytoplankton Communities. Nature Climate Change, doi: 10.1038/nclimate2722
Villar, E., Farrant, G.K., Follows, M.J., et al, 2015, Environmental characteristics of Agulhas rings affect interocean plankton transport. Science, Vol. 348 no. 6237, doi: 10.1126/science.1261447
Alexandra Z. Worden, Michael J. Follows, Stephen J. Giovannoni, Susanne Wilken, Amy E. Zimmerman, and Patrick J. Keeling (2015) Rethinking the marine carbon cycle: Factoring in the multifarious lifestyles of microbes. Science 13 February 2015: Vol. 347 no. 6223, doi: 10.1126/science.1257594
Talmy, D., J. Blackford, N. J. Hardman-Mountford, L. Polimene, M.J. Follows, and R.J. Geider (2014) Flexible C : N ratio enhances metabolism of large phytoplankton when resource supply is intermittent. Biogeosciences, 11, 4881-4895, doi: 10.5194/bg-11-4881-2014
In their new competition theory paper, appearing in the 2014 issue of Biogeosciences, Dutkiewicz et al examine the sensitivity of the biogeography of nitrogen fixers to a warming climate and increased aeolian iron deposition in the context of a global earth system model. Continue reading
The nitrogen cycle is fundamental to Earth’s biogeochemistry. Yet major quantitative uncertainties remain, particularly regarding the global oceanic nitrogen fixation rate. Continue reading
Dutkiewicz, S., Ward, B. A., Scott, J. R., and Follows, M. J. (2014) Understanding predicted shifts in diazotroph biogeography using resource competition theory, Biogeosciences, 11, 5445-5461, doi: 10.5194/bg-11-5445-2014.