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, NJ, Powell, SB, Cronin, TW, Caldwell, RL, Johnsen, S, Gruev, V, Chiou, T-HS, Roberts, NW, and How, MJ. "Polarisation signals: a new currency for communication." The Journal of Experimental Biology 222, no. Pt 3 (February 7, 2019). (Review) Full Text
Ritschard, EA, Fitak, RR, Simakov, O, and Johnsen, S. "Genomic signatures of G-protein-coupled receptor expansions reveal functional transitions in the evolution of cephalopod signal transduction." Proceedings. Biological Sciences 286, no. 1897 (February 2019): 20182929-null. Full Text
Foster, JJ, Kirwan, JD, El Jundi, B, Smolka, J, Khaldy, L, Baird, E, Byrne, MJ, Nilsson, D-E, Johnsen, S, and Dacke, M. "Orienting to polarized light at night - matching lunar skylight to performance in a nocturnal beetle." The Journal of Experimental Biology 222, no. Pt 2 (January 28, 2019). Full Text
Schweikert, LE, Fitak, RR, Caves, EM, Sutton, TT, and Johnsen, S. "Spectral sensitivity in ray-finned fishes: diversity, ecology and shared descent." The Journal of Experimental Biology 221, no. Pt 23 (November 27, 2018). Full Text
Schweikert, LE, Caves, EM, Solie, SE, Sutton, TT, and Johnsen, S. "Variation in rod spectral sensitivity of fishes is best predicted by habitat and depth." Journal of Fish Biology (November 4, 2018). Full Text
Fitak, RR, Caves, EM, and Johnsen, S. "Orientation in Pill Bugs: An Interdisciplinary Activity to Engage Students in Concepts of Biology, Physics & Circular Statistics." American Biology Teacher 80, no. 8 (October 1, 2018): 608-618. Full Text
Caves, EM, Green, PA, Zipple, MN, Peters, S, Johnsen, S, and Nowicki, S. "Categorical perception of colour signals in a songbird." Nature 560, no. 7718 (August 2018): 365-367. Full Text
Dreyer, D, Frost, B, Mouritsen, H, Günther, A, Green, K, Whitehouse, M, Johnsen, S, Heinze, S, and Warrant, E. "The Earth's Magnetic Field and Visual Landmarks Steer Migratory Flight Behavior in the Nocturnal Australian Bogong Moth." Current Biology : Cb 28, no. 13 (July 2018): 2160-2166.e5. Full Text
Fitak, RR, and Johnsen, S. "Green sea turtle (Chelonia mydas) population history indicates important demographic changes near the mid-Pleistocene transition." Marine Biology 165, no. 7 (July 1, 2018). Full Text
Fitak, RR, Schweikert, LE, Wheeler, BR, Ernst, DA, Lohmann, KJ, and Johnsen, S. "Near absence of differential gene expression in the retina of rainbow trout after exposure to a magnetic pulse: implications for magnetoreception." Biology Letters 14, no. 6 (June 2018). Full Text
Johnsen, S, and Ruxton, GD. "Join Now! The increased visibility of large groups of aquatic and aerial organisms is far outweighed by the benefits of aggregation." March 2017.
Thomas, KN, Vecchione, M, and Johnsen, S. "What big eyes you have: Eye allometry and visual range in deep-sea cephalopods." March 2017.
Caves, EM, Chen, CC, and Johnsen, S. "Coarse vision isn't useless vision: cleaner shrimp use monochromatic, low-resolution vision to detect client fish." March 2017.
Bagge, LE, and Johnsen, S. "Anti-reflective invisibility cloak: monolayers of spheres reduce cuticle reflectance in hyperiid amphipods." March 2017.
Thomas, KN, Robison, BH, and Johnsen, S. "The perks of being cock-eyed: Orientation and visual characteristics of histioteuthid squids." March 2016.
Johnsen, S, Gagnon, YL, Marshall, NJ, and Cronin, TW. "Another beautiful hypothesis slain by an ugly fact: Polarization vision does not increase the sighting distance of silvery fish." March 2016.
Bagge, LE, Kinsey, ST, and Johnsen, S. "The limits of an invisibility cloak: transparent shrimp become opaque after multiple tail-flipping escapes." March 2016.
Brandley, N, Caves, E, and Johnsen, S. "Do warning signals exploit an evolutionary constraint on insect visual acuity?." March 2016.
Johnsen, S. "What Next? Unanswered questions about extraocular photoreception and how we might answer them." March 2016.
Caves, EM, Brandley, NC, and Johnsen, S. "Visual acuity in fish: the effects of eye morphology, environment, and ecology." March 2016.
The International Human Frontier Science Program Organization awarded by International Human Frontier Science Program Organization (Principal Investigator). 2018 to 2021
The Sigsbee Deep Expedition- Exploration of light in the water column below 1000m awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2017 to 2020
Long-range Geomagnetic Navigation in Sea Turtles: An Interdisciplinary Approach to awarded by University of North Carolina - Chapel Hill (Principal Investigator). 2014 to 2019
Cleaner Shrimp and Client Fish: Combining Phylogenetics and Visual Ecology to Understand the Evolution of Mutualistic Interactions awarded by National Geographic Society (Principal Investigator). 2015 to 2016
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