Sonke Johnsen

Professor in the Department of Biology

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

Education

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

  • B.A., Swarthmore College 1988

Zylinski, S, and Johnsen, S. "Visual cognition in deep-sea cephalopods: What we don’t know and why we don’t know it." In Cephalopod Cognition, 223-241. January 1, 2014. Full Text

Marshall, J, and Johnsen, S. "Camouflage in marine fish." In Animal Camouflage: Mechanisms and Function, 186-211. January 1, 2011. Full Text

Marshall, J, and Johnsen, S. "Fluorescence as a means of colour signal enhancement." Philosophical transactions of the Royal Society of London. Series B, Biological sciences 372, no. 1724 (July 2017). (Review) Full Text

Cronin, TW, and Johnsen, S. "Extraocular, Non-Visual, and Simple Photoreceptors: An Introduction to the Symposium." Integrative and comparative biology 56, no. 5 (November 2016): 758-763. Full Text

Speiser, DI, Gagnon, YL, Chhetri, RK, Oldenburg, AL, and Johnsen, S. "Examining the Effects of Chromatic Aberration, Object Distance, and Eye Shape on Image-Formation in the Mirror-Based Eyes of the Bay Scallop Argopecten irradians." Integrative and comparative biology 56, no. 5 (November 2016): 796-808. Full Text

Tedore, C, and Johnsen, S. "Disentangling the visual cues used by a jumping spider to locate its microhabitat." The Journal of experimental biology 219, no. Pt 15 (August 2016): 2396-2401. Full Text

Johnsen, S, Gagnon, YL, Marshall, NJ, Cronin, TW, Gruev, V, and Powell, S. "Polarization vision seldom increases the sighting distance of silvery fish." Current biology : CB 26, no. 16 (August 2016): R752-R754. (Letter) Full Text

Wilkins, L, Marshall, NJ, Johnsen, S, and Osorio, D. "Modelling colour constancy in fish: implications for vision and signalling in water." The Journal of experimental biology 219, no. Pt 12 (June 2016): 1884-1892. Full Text

Johnsen, S. "How to measure color using spectrometers and calibrated photographs." The Journal of experimental biology 219, no. Pt 6 (March 2016): 772-778. (Review) Full Text

Zylinski, S, Osorio, D, and Johnsen, S. "Cuttlefish see shape from shading, fine-tuning coloration in response to pictorial depth cues and directional illumination." Proceedings. Biological sciences 283, no. 1826 (March 2016): 20160062-. Full Text

Caves, EM, Frank, TM, and Johnsen, S. "Spectral sensitivity, spatial resolution and temporal resolution and their implications for conspecific signalling in cleaner shrimp." The Journal of experimental biology 219, no. Pt 4 (February 2016): 597-608. Full Text Open Access Copy

Pages

Long-range Geomagnetic Navigation in Sea Turtles: An Interdisciplinary Approach to awarded by University of North Carolina - Chapel Hill (Principal Investigator). 2014 to 2018

Bioluminescence in the Deep-sea Benthos II awarded by Nova Southeastern University (Principal Investigator). 2015

Dynamic Camouflage in Benthic and Pelagic Cephalopods: awarded by Office of Naval Research (Principal Investigator). 2009 to 2015

Collaborative Research: Midwater animal models: Optical measurement of metabolic transitions awarded by National Science Foundation (Principal Investigator). 2009 to 2013

Operation Deep-Scope 2007: Characterization of cliff ecosystems using new technologies awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2007 to 2009

Collaborative Research: Transparency: Ultrastructural and biochemical specialization in muscular and ocular tissues awarded by National Science Foundation (Principal Investigator). 2005 to 2009

Selective Invisibility Based on the Differing Temporal Resolutions of Sea Turtles and Billfish Under Low Light Condition awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2005 to 2006

Mathematical Model of the Visual Abilities of Sea Turtles and Pelagic Fishes awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2003