Katja Fennel
Institute for Marine and Coastal Sciences

 & Department of Geological Science
Rutgers University

71 Dudley Road
New Brunswick, NJ 08901

Rm 214C


Telephone: (732) 932-6555 x267
Fax: (732) 932-8578

E-mail Address:     




Diploma, University Rostock, Germany (Mathematics), 1994
Ph.D., University Rostock, Germany (Marine Biology), 1998


Research Interests:


Dynamics of marine ecosystems;
Coupled physical/biological models;
Mesoscale processes;
Parameter optimization by data assimilation;
Biogeochemical cycles



Numerical Modeling of Coupled Systems (course 16:712:604; Spring 2005) – view a summary of students projects here

Introduction to Oceanography (course 01:460:120 co-listed as 11:628:120; Spring 2006)


Publications (peer-reviewed):


1)       Rothstein,  L.M., Cullen, J.J., Abbott, M., Chassignet, E., Denman, K., Doney, S., Ducklow, H., Fennel, K., Follows, M., Haidvogel, D., Hoffman, E., Karl, D., Kindle, J., Lima, I., Maltrud, M., McClain, C., McGillicuddy, D., Olascoaga, J., Spitz, Y., Wiggert, J., Yoder, J. (2006)

Modeling Ocean Ecosystems: The PARADIGM Program.

Oceanography 19(1):16-45


2)       Berman-Frank, I., Chen, Y., Gao, Y., Fennel, K., Follows, M., Milligan, A., Falkowski, P.G.

Feedbacks between the Nitrogen, Carbon and Oxygen Cycles.

(submitted for Nitrogen in the Marine Environment, edited by Mulholland, M., Carpenter, E., Capone, D., Bronk, D.)


3)       Falkowski, P.G., Katz, M.E., Milligan, A., Fennel, K., Cramer, B., Pierre Aubry, M., Berner, R., Zapol, W.M. (2005)

The rise of atmospheric oxygen levels over the past 205 million years and the evolution of large placental mammals.

Science 309:2202-2204

Read commentary in Nature, and CNN coverage here


4)       Fennel, K., Wilkin, J., Levin, J., Moisan, J., O’Reilly, J., Haidvogel, D.

Nitrogen cycling in the Mid Atlantic Bight and implications for the North Atlantic nitrogen budget: Results from a three-dimensional model.

Global Biogeochemical Cycles 20, GB3007, doi:10.1029/2005GB002456.


5)       Fennel, K., Follows, M., Falkowski, P.G. (2005)

The Co-evolution of the nitrogen, carbon and oxygen cycles in the Proterozoic Ocean.

American Journal of Science 305:526-545

Read German and Austrian press coverage in Sϋddeutsche Zeitung, 101 May 3, 2005 and Der Standard, May 5, 2005


6)       Fennel, K., Collier, R., Larson, G., Crawford, G., Boss, E.

The seasonal cycle of nutrients and plankton in Crater Lake, OR.

Hydrobiologia (in press)


7)       Boss, E., Collier, R., Larson, G., Fennel, K., Pegau, W. S.

Measurements of spectral optical properties and their relation to biogeochemical variables and processes in Crater Lake, Crater Lake National Park, OR.

Hydrobiologia (in press)


8)       Katz, M.E., Wright, J.D., Miller, K.G., Cramer, B.S., Fennel, K., Falkowski P.G. (2005)

Biological Overprint of the Geological Carbon Cycle.

Marine Geology 217(3-4):323-338

9)       Fennel, K., and E. Boss (2003)
Subsurface maxima of phytopankton and chlorophyll--Steady state solutions from a simple model.
Limnology & Oceanography 48(4), p.1521-1534

10)   Fennel, K., M.R. Abbott, Y.H. Spitz, J.G. Richman and D.M. Nelson (2003)
Modeling controls of phytoplankton production in the southwest Pacific sector of the Southern Ocean.
Deep-Sea Research II 50, p.769-798

11)   Fennel, K., M.R. Abbott, Y.H. Spitz, J.G. Richman and D.M. Nelson (2003)
Impacts of iron control on phytoplankton production in the modern and glacial Southern Ocean.
Deep-Sea Research II, 50 p.833-851

12)   Fennel, K., Y.H. Spitz, R.M. Letelier, M.R. Abbott and D.M. Karl (2002)
A deterministic model for N2 fixation at Station ALOHA in the subtropical North Pacific Ocean.
Deep-Sea Research II 49, p.149-174

13)   Fennel, K., M. Losch, J. Schröter and M. Wenzel (2001)
Testing a marine ecosystem model: Sensitivity analysis and parameter optimization.
Journal of Marine Systems 28/1-2, p.45-63

14)   Fennel, K. (2001)
The generation of phytoplankton patchiness by mesoscale current patterns.
Ocean Dynamics 52, p.58-70
Springer-Verlag is copyright holder. Original article made available via http://link.springer.de/.

15)   Humborg, C., K. Fennel, M. Pastuszak and W. Fennel (2000)
A box model approach for the long-term assessment of estuarine eutrophication, Szczecin Lagoon, southern Baltic.
Journal of Marine Systems 25, p.387-403

16)   Fennel, K. (1999)
Interannual and Regional Variability of Chemical-biological Variables in a Coupled 3-D Model of the Western Baltic.
Hydrobiologia 393, p.25-33

17)   Fennel, K. (1999)
Convection and the timing of phytoplankton spring blooms in the western Baltic Sea.
Estuarine Coastal and Shelf Science 49, p.113-128

18)   Fennel, K., and T. Neumann (1998)
A Coupled physical-chemical-biological Model for the Western Baltic.
In: Harff, J., W. Lemke & K. Stattegger (eds.). Computerized Modeling of Sedimentary Systems, Springer Berlin,