Sonke Johnsen

Professor of Biology

301 Bio Sci Bldg, Durham, NC 27708
Campus Box: 
Duke Box 90338, Durham, NC 27708-0338
(919) 660-7321


  • Ph.D., University of North Carolina at Chapel Hill 1996

  • B.A., Swarthmore College 1988

Widder, E. A., S. Johnsen, S. A. Bernstein, J. F. Case, and D. J. Neilson. “Thin layers of bioluminescent copepods found at density discontinuities in the water column.” Marine Biology 134, no. 3 (August 1, 1999): 429–37. Full Text

Johnsen, S., and E. A. Widder. “The physical basis of transparency in biological tissue: Ultrastructure and the minimization of light scattering.” Journal of Theoretical Biology 199, no. 2 (July 21, 1999): 181–98. Full Text

Johnsen, S., E. J. Balser, and E. A. Widder. “Light-emitting suckers in an octopus [3].” Nature 398, no. 6723 (March 11, 1999): 113–14. Full Text

Johnsen, S., E. J. Balser, E. C. Fisher, and E. A. Widder. “Bioluminescence in the deep-sea cirrate octopod Stauroteuthis syrtensis verrill (Mollusca: Cephalopoda).” Biological Bulletin 197, no. 1 (January 1, 1999): 26–39. Full Text

Johnsen, S., and E. A. Widder. “Transparency and visibility of gelatinous zooplankton from the Northwestern Atlantic and Gulf of Mexico.” Biological Bulletin 195, no. 3 (January 1, 1998): 337–48. Full Text

Johnsen, S., and W. M. Kier. “Damage due to solar ultraviolet radiation in the brittlestar Ophioderma brevispinum (Echinodermata: Ophiuroidea).” Journal of the Marine Biological Association of the United Kingdom 78, no. 2 (January 1, 1998): 681–84. Full Text

Johnsen, S. “Extraocular sensitivity to polarized light in an echinoderm..” The Journal of Experimental Biology 195 (October 1994): 281–91.

Kauffman, S. A., and S. Johnsen. “Coevolution to the edge of chaos: coupled fitness landscapes, poised states, and coevolutionary avalanches..” Journal of Theoretical Biology 149, no. 4 (April 1991): 467–505. Full Text