1 / 9

Arrigo (2005) Marine Microorganisms and Global Nutrient Cycles Nature 437: 349-355

Arrigo (2005) Marine Microorganisms and Global Nutrient Cycles Nature 437: 349-355. Issues: Redfield stoichiometry Co-limitation N 2 -Fixation Anammox. What is N*?. The solid line shows the linear equation P = 1/16 N + 0.345 (equivalent to N* = 0) Values to the right have

leroy
Download Presentation

Arrigo (2005) Marine Microorganisms and Global Nutrient Cycles Nature 437: 349-355

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Arrigo (2005) Marine Microorganisms and Global Nutrient Cycles Nature 437: 349-355 Issues: Redfield stoichiometry Co-limitation N2-Fixation Anammox

  2. What is N*? The solid line shows the linear equation P = 1/16 N + 0.345 (equivalent to N* = 0) Values to the right have positive N*, to the left have negative N* N* is defined as N* = [NO3] – 16 x [PO4] +2.9 PO4 versus Nitrate (GEOSECS data) Insert shows the effect of nitrification, photosynthesis, N2 fixation and denitrification.

  3. N* is defined as N* = [NO3] – 16 x [PO4] +2.9

  4. From Pahlow and Riebesell (2000) Science 287: 831 Does the Redfield ratio vary on geological timescales?

More Related