Sonke Johnsen
Professor of Biology
Education
Ph.D., University of North Carolina - Chapel Hill 1996
B.A., Swarthmore College 1988
Johnsen, S., and W. M. Kier. “Shade-seeking behaviour under polarized light by the brittlestar Ophioderma brevispinum (Echinodermata: Ophiuroidea).” Journal of the Marine Biological Association of the United Kingdom 79, no. 4 (August 1, 1999): 761–63. https://doi.org/10.1017/S0025315498000940. Full Text
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. https://doi.org/10.1007/s002270050559. 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. https://doi.org/10.1006/jtbi.1999.0948. Full Text
Johnsen, S., E. J. Balser, and E. A. Widder. “Light-emitting suckers in an octopus.” Nature 398, no. 6723 (March 11, 1999): 113–14. https://doi.org/10.1038/18131. 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. https://doi.org/10.2307/1542994. 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. https://doi.org/10.2307/1543145. 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. https://doi.org/10.1017/S0025315400041758. Full Text
Johnsen, S. “Identification and localization of a possible rhodopsin in the echinoderms Asterias forbesi (Asteroidea) and Ophioderma brevispinum (Ophiuroidea).” The Biological Bulletin 193, no. 1 (August 1997): 97–105. https://doi.org/10.2307/1542739. Full Text
Johnsen, S. “Extraocular sensitivity to polarized light in an echinoderm.” The Journal of Experimental Biology 195 (October 1994): 281–91.
Johnsen, S., and W. M. Kier. “Intramuscular crossed connective tissue fibres: skeletal support in the lateral fins of squid and cuttlefish (Mollusca: Cephalopoda).” Journal of Zoology 231, no. 2 (January 1, 1993): 311–38. https://doi.org/10.1111/j.1469-7998.1993.tb01921.x. Full Text