Published

Credit: Seth Danielson

Credit: Seth Danielson

Modeling at NGA LTER investigates how the complex interplay between the strongly seasonal freshwater discharge at the coast and offshore eddies controls horizontal gradients of limiting nutrients (nitrate and iron). This work builds on previous modeling studies in the region that utilized Seward Line observations to improve the accuracy of simulated physical and biogeochemical fields. Moreover, previous models quantified the importance of eddy induced entrainment of shelf iron to offshore primary production, which extends to phyto- and zooplankton community structure.

Learn more

  1. Coyle, KO et al. 2013. Zooplankton biomass, advection and production on the northern Gulf of Alaska shelf from simulations and field observations. J. Mar. Sys. doi: 10.1016/j.jmarsys.2013.04.018
  2. Fiechter, J. et al. 2011. A data assimilative, coupled physical-biological model for the Coastal Gulf of Alaska. Dyn. Atm. Oceans. doi: 10.1016/j. dynatmoce.2011.01.002
  3. Fiechter, J. and Moore, A.M. 2012. Iron limitation impact on eddy-induced ecosystem variability in the coastal Gulf of Alaska. J. Mar. Sys. doi: 10.1016/j.jmarsys.2011.09.012

Contact

Russell Hopcroft
rrhopcroft@alaska.edu

Posted:  July 10, 2020