Peipei Wu, Stephanie Dutkiewicz, Erwan Monier, and Yanxu Zhang (2021), Bottom-Heavy Trophic Pyramids Impair Methylmercury Biomagnification in the Marine Plankton Ecosystems, Environmental Science & Technology, doi: 10.1021/acs.est.1c04083 Continue reading Bottom-Heavy Trophic Pyramids Impair Methylmercury Biomagnification in the Marine Plankton Ecosystems
Category Archives: Top-Down Control
Subhendu Chakraborty, Ken H. Andersen, André W. Visser, Keisuke Inomura, Michael J. Follows & Lasse Riemann (2021), Quantifying nitrogen fixation by heterotrophic bacteria in sinking marine particles, Nature Communications, doi: 10.1038/s41467-021-23875-6
Continue reading Quantifying nitrogen fixation by heterotrophic bacteria in sinking marine particles
B.B. Cael, Kelsey Bisson, Maureen Conte, Manon T. Duret, Christopher L. Follett, Stephanie A. Henson, Makio C. Honda, Morten H. Iversen, David M. Karl, Richard S. Lampitt, Colleen B. Mouw, Frank Muller‐Karger, Corinne A. Pebody, Kenneth L. Smith Jr., David Talmy (2021), Open ocean particle flux variability from surface to seafloor, Geophysical Research Letters, doi: 10.1029/2021GL092895 Continue reading Open ocean particle flux variability from surface to seafloor
Study reveals uncertainty in how much carbon the ocean absorbs over time
Climate projections could be off by five years, Darwin Group researchers find. Continue reading Study reveals uncertainty in how much carbon the ocean absorbs over time
B. B. Cael, Emma L. Cavan, and Gregory L. Britten (2021), Reconciling the size-dependence of marine particle sinking speed, Geophysical Research Letters, doi: 10.1029/2020GL091771
Continue reading Reconciling the size-dependence of marine particle sinking speed
Seeding Oceans with Iron may not Impact Climate Change
Darwin Project study led by Jonathan Lauderdale finds Earth’s oceans contain just the right amount of iron; adding more may not improve their ability to absorb carbon dioxide. Continue reading Seeding Oceans with Iron may not Impact Climate Change
Ruifeng Zhang, Rachel L. Kelly, Kathryn M. Kauffman, Amber K. Reid, Jonathan M. Lauderdale, Michael J. Follows, Seth G. John (2019), Growth of marine Vibrio in oligotrophic environments is not stimulated by the addition of inorganic iron, Earth and Planetary Science Letters, doi: 10.1016/j.epsl.2019.04.002 Continue reading Growth of marine Vibrio in oligotrophic environments is not stimulated by the addition of inorganic iron
Phytoplankton & Chips
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 Phytoplankton & Chips
Darwin goes to Ocean Sciences 2014
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.
Size Structure: exploring nutrient versus grazing control
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.
Continue reading Size Structure: exploring nutrient versus grazing control