Guest lectures by Shari Yvon-Lewis:

The role of the Oceans in biogeochemical cycling, I, lecture material (large pdf-file !)

The role of the Oceans in biogeochemical cycling, IIa, lecture material, and IIb, lecture material (large pdf-file !)

Homeworks assigments (to be handed in on Thursday, November 3):

a) Required Reading: Chapter 9, The Oceans, of the textbook
b)  Tasks:

• Ocean mixing transports nutrients and carbon. Summarize what drives ocean vertical mixing, how long it takes (residence times), and why this matters for ocean primary productivity and carbon storage.  4 pts
  
• What organisms dominate ocean primary productivity and where in the ocean (vertically and horiziontally) does most of that happen?  3 pts
• Nutrient use efficiency in the thermocline is very high. Which are the most limiting nutrients in the ocean? What general vertical profile do they show in the thermocline and below. Why? How is this connected to increased productivity in the North Atlantic or along the California coast, or in the Benguela current?  3 pts