Published

Sampling with a Trace Metal-clean rosette.
Credit: K. Barbeau lab

Iron supply in the CCE LTER region not only impacts carbon production and export associated with mesoscale circulation features. It also influences phytoplankton growth and species composition at the subsurface chlorophyll maximum layer (SCML), which is a widespread feature during spring and summer. Consistent with regional climate indices, biogeochemical proxies for iron limitation revealed increasing frequency of iron limitation at SCMLs in the California Current system. These results are relevant to upwelling systems worldwide.

 

Learn more

  1. Hogle SL, et al. 2018. Pervasive iron limitation at subsurface chlorophyll maxima of the California Current. PNAS. doi: 10.1073/ pnas.1813192115
  2. Landry MR et al. 2012. Pelagic community responses to a deep-water front in the California Current Ecosystem: overview of the A-Front Study. Journal of Plankton Research. doi: 10.1093/plankt/fbs025 (entire issue of 8 articles devoted to CCE-LTER’s A-Front study)
  3. Stukel MR et al. 2017. Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction. PNAS. doi: 10.1073/ pnas.1609435114

Contact

Mark Ohman
mohman@ucsd.edu

Posted:  July 15, 2020