Nitrogen Uptake and Assimilation

Further complications in interpreting uptake data in the context of new production arise when one considers that water column regeneration of NOs (i.e.. 

Subpolar NE nitrogen Summer 0—25 m warm core ww 2.1-29.1 0.42-10 Boyd et ah, 1997 

North Atlantic Fall Euphotic zone ww 0.1-2.5 0.2-4.0 0.1-2.5 Varela et ah, 2005 

Atlantic Winter-bloom Euphotic zone ww 15-170 12 Lipschultz, 2001 

Atlantic Spring and Summer Euphotic zone ww 0.2-5.3 0.4-5.3 MulhoUand, unpublished 

---

Priscu, J. C., Pahnisano, A. C., Priscu, L. R., Sullivan, C. W. (1989). Temperature dependence of inorganic nitrogen uptake and assimilation in Antarctic sea-ice microalgae. Polar Biol. 9, 443—446. 

Cohen, R. A., and Fong, P. (2004b). Nitrogen uptake and assimilation in Enteromorpha intestinalis (L.) Link (Chlorophyta) Using N to determine preference during simultaneous pulses of nitrate and ammonium. J. Exp. Mar. Biol. Ecol. 309, 67—77. 

---