Zackary Johnson | Scholars@Duke

Zackary Johnson
Arthur P. Kaupe Assistant Professor of Molecular Biology in Marine Science

Our group broadly studies the abundance, diversity and activity of marine microbes. We are biological oceanographers , marine molecular ecologists , marine microbiologists and biogeochemists. Our research focuses on the marine cyanobacteria Prochlorococcus , the most abundant phytoplankton in the open oceans and an excellent model marine microbe, as well as the biotechnological applications of marine microalgae. We are at the Marine Laboratory as part of the Nicholas School of the Environment at Duke University .

Current Appointments & Affiliations

Arthur P. Kaupe Assistant Professor of Molecular Biology in Marine Science, Marine Science and Conservation, Nicholas School of the Environment 2012
Associate Professor of Biological Oceanography and Marine Bi, Marine Science and Conservation, Nicholas School of the Environment 2017
Faculty Network Member of The Energy Initiative, Duke University Energy Initiative, Initiatives 2012

Contact Information

135 Duke Marine Lab Rd., Duke Marine Laboratory, Beaufort, NC 28516
zackary.johnson@duke.edu (252) 504-7543
Johnson Lab Webpage

Background
Education, Training, & Certifications
- Ph.D., Duke University 2004
- B.S., Massachusetts Institute of Technology 1994
Duke Appointment History
- Assistant Professor of Biological Oceanography and Marine Biotechnology, Marine Science and Conservation, Nicholas School of the Environment 2009 - 2017
- Assistant Professor in the Department of Biology, Biology, Trinity College of Arts & Sciences 2014 - 2017
Recognition
In the News
- AUG 14, 2015
  
  New Duke-Led Consortium To Focus On Creating Food And Fuel From Algae
Research
Selected Grants
- Marine Algae Industrialization Consortium (MAGIC): Combining biofuel and high-value bioproducts to meet the RFS awarded by Department of Energy 2015 - 2019
- Collaborative Research: Ocean Acidification: microbes as sentinels of adaptive responses to multiple stressors awarded by National Science Foundation 2015 - 2017
- Large-Scale Production of Fuels and Feed from Marine Microalgae awarded by Cornell University 2011 - 2015
- Collaborative Research: Seasonal and Decadal Changes in Temperature Drive Prochlorococcus Ecotype Distribution Patterns awarded by National Science Foundation 2010 - 2015
- MRI-R-2: Acquisition of High-Speed Sorting Flow Cytometer for Multi-User Environmental Microbiology Research awarded by National Science Foundation 2010 - 2012
Publications & Artistic Works
Selected Publications
- Journal Articles
  - He, Y, Sen, B, Shang, J, He, Y, Xie, N, Zhang, Y, Zhang, J, Johnson, ZI, and Wang, G. "Seasonal influence of scallop culture on nutrient flux, bacterial pathogens and bacterioplankton diversity across estuaries off the Bohai Sea Coast of Northern China." Marine pollution bulletin (August 2, 2017). Full Text
  - Loftus, SE, and Johnson, ZI. "Cross-study analysis of factors affecting algae cultivation in recycled medium for biofuel production." Algal Research 24 (June 2017): 154-166. Full Text
  - Ward, CS, Yung, C-M, Davis, KM, Blinebry, SK, Williams, TC, Johnson, ZI, and Hunt, DE. "Annual community patterns are driven by seasonal switching between closely related marine bacteria." The ISME journal 11, no. 6 (June 2017): 1412-1422. Full Text
  - Liu, Y, Singh, P, Liang, Y, Li, J, Xie, N, Song, Z, Daroch, M, Leng, K, Johnson, ZI, and Wang, G. "Abundance and Molecular Diversity of Thraustochytrids in Coastal Waters of Southern China." FEMS microbiology ecology (May 18, 2017). Full Text
  - Greene, C, Huntley, M, Archibald, I, Gerber, L, Sills, D, Granados, J, Tester, J, Beal, C, Walsh, M, Bidigare, R, Brown, S, Cochlan, W, Johnson, Z, Lei, XG, Machesky, S, Redalje, D, Richardon, R, Kiron, V, and Corless, V. "Marine Microalgae: Climate, Energy, and Food Security from the Sea." Oceanography 29, no. 4 (December 4, 2016). Full Text
  - Walsh, MJ, Gerber Van Doren, L, Sills, DL, Archibald, I, Beal, CM, Lei, XG, Huntley, ME, Johnson, Z, and Greene, CH. "Algal food and fuel coproduction can mitigate greenhouse gas emissions while improving land and water-use efficiency." Environmental Research Letters 11, no. 11 (November 1, 2016): 114006-114006. Full Text
  - Larkin, AA, Blinebry, SK, Howes, C, Lin, Y, Loftus, SE, Schmaus, CA, Zinser, ER, and Johnson, ZI. "Niche partitioning and biogeography of high light adapted Prochlorococcus across taxonomic ranks in the North Pacific." The ISME journal 10, no. 7 (July 2016): 1555-1567. Full Text
  - McMurray, SE, Johnson, ZI, Hunt, DE, Pawlik, JR, and Finelli, CM. "Selective feeding by the giant barrel sponge enhances foraging efficiency." Limnology and Oceanography 61, no. 4 (July 2016): 1271-1286. Full Text
  - Yung, C-M, Ward, CS, Davis, KM, Johnson, ZI, and Hunt, DE. "Insensitivity of Diverse and Temporally Variable Particle-Associated Microbial Communities to Bulk Seawater Environmental Parameters." Applied and environmental microbiology 82, no. 11 (June 2016): 3431-3437. Full Text
  - Chandler, JW, Lin, Y, Gainer, PJ, Post, AF, Johnson, ZI, and Zinser, ER. "Variable but persistent coexistence of Prochlorococcus ecotypes along temperature gradients in the ocean's surface mixed layer." Environmental microbiology reports 8, no. 2 (April 2016): 272-284. Full Text
  - Morris, JJ, Johnson, ZI, Wilhelm, S, and Zinser, ER. "Contribution to the Themed Section: Scaling from individual lankton to marine ecosystems Diel regulation of hydrogen peroxide defenses by open ocean microbial communities." JOURNAL OF PLANKTON RESEARCH 38, no. 4 (2016): 1103-1114. Full Text Link to Item
  - Huntley, ME, Johnson, ZI, Brown, SL, Sills, DL, Gerber, L, Archibald, I, Machesky, SC, Granados, J, Beal, C, and Greene, CH. "Demonstrated large-scale production of marine microalgae for fuels and feed." Algal Research 10 (July 2015): 249-265. Full Text
  - Yung, C-M, Vereen, MK, Herbert, A, Davis, KM, Yang, J, Kantorowska, A, Ward, CS, Wernegreen, JJ, Johnson, ZI, and Hunt, DE. "Thermally adaptive tradeoffs in closely related marine bacterial strains." Environmental microbiology 17, no. 7 (July 2015): 2421-2429. Full Text
  - Ribalet, F, Swalwell, J, Clayton, S, Jiménez, V, Sudek, S, Lin, Y, Johnson, ZI, Worden, AZ, and Armbrust, EV. "Light-driven synchrony of Prochlorococcus growth and mortality in the subtropical Pacific gyre." Proceedings of the National Academy of Sciences of the United States of America 112, no. 26 (June 15, 2015): 8008-8012. Full Text
  - Yates, K, Turley, C, Hopkinson, B, Todgham, A, Cross, J, Greening, H, Williamson, P, Van Hooidonk, R, Deheyn, D, and Johnson, Z. "Transdisciplinary Science: A Path to Understanding the Interactions Among Ocean Acidification, Ecosystems, and Society." Oceanography 25, no. 2 (June 1, 2015): 212-225. Full Text
  - Dupont, CL, McCrow, JP, Valas, R, Moustafa, A, Walworth, N, Goodenough, U, Roth, R, Hogle, SL, Bai, J, Johnson, ZI, Mann, E, Palenik, B, Barbeau, KA, Venter, JC, and Allen, AE. "Genomes and gene expression across light and productivity gradients in eastern subtropical Pacific microbial communities." The ISME Journal 9, no. 5 (May 2015): 1076-1092. Full Text
  - Huntley, ME, Johnson, ZI, Brown, SL, Sills, DL, Gerber, L, Archibald, I, Machesky, SC, Granados, J, Beal, C, and Greene, CH. "Corrigendum to "Demonstrated large-scale production of marine microalgae for fuels and feed" [Algal Res. 10 (July 2015) 249-265] DOI: 10.1016/j.algal.2015.04.016." Algal Research 11 (January 1, 2015): 379-380. Full Text
  - Huntley, ME, Johnson, ZI, Brown, SL, Sills, DL, Gerber, L, Archibald, I, Machesky, SC, Granados, J, Beal, C, and Greene, CH. "Corrigendum to "Demonstrated large-scale production of marine microalgae for fuels and feed" [Algal Res. 10 (July 2015) 249-265] DOI: 10.1016/j.algal.2015.04.016." Algal Research 11 (2015): 379-380. Full Text
  - Johnson, ZI, and Martiny, AC. "Techniques for quantifying phytoplankton biodiversity." Annual review of marine science 7 (January 2015): 299-324. (Review) Full Text
  - Kopf, A, Bicak, M, Kottmann, R, Schnetzer, J, Kostadinov, I, Lehmann, K, Fernandez-Guerra, A, Jeanthon, C, Rahav, E, Ullrich, M, Wichels, A, Gerdts, G, Polymenakou, P, Kotoulas, G, Siam, R, Abdallah, RZ, Sonnenschein, EC, Cariou, T, O'Gara, F, Jackson, S, Orlic, S, Steinke, M, Busch, J, Duarte, B, Caçador, I, Canning-Clode, J, Bobrova, O, Marteinsson, V, Reynisson, E, Loureiro, CM, Luna, GM, Quero, GM, Löscher, CR, Kremp, A, DeLorenzo, ME, Øvreås, L, Tolman, J, LaRoche, J, Penna, A, and Frischer, M et al. "The ocean sampling day consortium." GigaScience 4 (January 2015): 27-. Full Text Open Access Copy
  - Jiao, N, Luo, T, Zhang, R, Yan, W, Lin, Y, Johnson, ZI, Tian, J, Yuan, D, Yang, Q, Zheng, Q, Sun, J, Hu, D, and Wang, P. "Presence of Prochlorococcus in the aphotic waters of the western Pacific Ocean." Biogeosciences 11, no. 8 (2014): 2391-2400. Full Text
  - Wang, X, Singh, P, Gao, Z, Zhang, X, Johnson, ZI, and Wang, G. "Distribution and diversity of planktonic fungi in the West Pacific Warm Pool." PloS one 9, no. 7 (January 2014): e101523-. Full Text
  - Johnson, ZI, and Johnston, DW. "Smartphones: Powerful Tools for Geoscience Education." Eos, Transactions American Geophysical Union 94, no. 47 (November 19, 2013): 433-434. Full Text
  - Bittar, TB, Lin, Y, Sassano, LR, Wheeler, BJ, Brown, SL, Cochlan, WP, and Johnson, ZI. "Carbon allocation under light and nitrogen resource gradients in two model marine phytoplankton." Journal of Phycology (2013). Full Text
  - Bittar, TB, Lin, Y, Sassano, LR, Wheeler, BJ, Brown, SL, Cochlan, WP, and Johnson, ZI. "Carbon allocation under light and nitrogen resource gradients in two model marine phytoplankton¹." Journal of Phycology 49, no. 3 (2013): 523-535. Full Text
  - Hunt, DE, Lin, Y, Church, MJ, Karl, DM, Tringe, SG, Izzo, LK, and Johnson, ZI. "Relationship between abundance and specific activity of bacterioplankton in open ocean surface waters." Appl Environ Microbiol 79, no. 1 (January 2013): 177-184. Full Text Link to Item
  - Johnson, ZI, Wheeler, BJ, Blinebry, SK, Carlson, CM, Ward, CS, and Hunt, DE. "Dramatic variability of the carbonate system at a temperate coastal ocean site (Beaufort, North Carolina, USA) is regulated by physical and biogeochemical processes on multiple timescales. (Published online)" PLoS One 8, no. 12 (2013): e85117-. Full Text Open Access Copy Link to Item
  - Lin, Y, Gazsi, K, Lance, VP, Larkin, AA, Chandler, JW, Zinser, ER, and Johnson, ZI. "In situ activity of a dominant Prochlorococcus ecotype (eHL-II) from rRNA content and cell size." Environmental Microbiology (2013). Full Text
  - Lin, Y, Gazsi, K, Lance, VP, Larkin, AA, Chandler, JW, Zinser, ER, and Johnson, ZI. "In situ activity of a dominant Prochlorococcus ecotype (eHL-II) from rRNA content and cell size." Environmental Microbiology 15, no. 10 (2013): 2736-2747. Full Text
  - Ferrón, S, Ho, DT, Johnson, ZI, and Huntley, ME. "Air-water fluxes of N₂O and CH₄ during microalgae (Staurosira sp.) cultivation in an open raceway pond." Environmental Science and Technology 46, no. 19 (2012): 10842-10848. Full Text
  - Ringuet, S, Sassano, L, and Johnson, ZI. "Erratum: A suite of microplate reader-based colorimetric methods to quantify ammonium, nitrate, orthophosphate and silicate concentrations for aquatic nutrient monitoring (Journal of Environmental Monitoring (2011) 13 (370-376) DOI: 10.1039/c0em00290a)." Journal of Environmental Monitoring 14, no. 12 (2012): 3305--. Full Text
  - Ritchie, AE, and Johnson, ZI. "Abundance and genetic diversity of aerobic anoxygenic phototrophic bacteria of coastal regions of the pacific ocean." Applied and Environmental Microbiology 78, no. 8 (2012): 2858-2866. Full Text
  - Rowe, JM, Debruyn, JM, Poorvin, L, Lecleir, GR, Johnson, ZI, Zinser, ER, and Wilhelm, SW. "Viral and bacterial abundance and production in the Western Pacific Ocean and the relation to other oceanic realms." FEMS Microbiology Ecology 79, no. 2 (2012): 359-370. Full Text
  - O'Kelly, C, Brown, S, Bidigare, R, Johnson, Z, Messer, A, Trapido-Rosenthal, H, and Wheeler, J. "CORRELATED MORPHOLOGICAL AND MOLECULAR DATA ESTABLISH THE POLYPHYLY OF NANODIATOMS PREVIOUSLY ASSIGNED TO NANOFRUSTULUM SHILOI." JOURNAL OF PHYCOLOGY 47 (September 2011): S88-S88. Link to Item
  - Morris, JJ, Szul, MJ, Johnson, ZI, Keller, M, and Zinser, ER. "EVOLUTION TOWARDS DEPENDENCY FOR A FREE-LIVING ORGANISM: HETEROTROPHIC "HELPERS" INCREASE RESISTANCE OF PROCHLOROCOCCUS TO ECOLOGICALLY RELEVANT CONCENTRATIONS OF HYDROGEN PEROXIDE." JOURNAL OF PHYCOLOGY 47 (February 2011): 5-5. Link to Item
  - Morris, JJ, Johnson, ZI, Szul, MJ, Keller, M, and Zinser, ER. "Dependence of the cyanobacterium Prochlorococcus on hydrogen peroxide scavenging microbes for growth at the ocean's surface." PLoS ONE 6, no. 2 (2011). Full Text
  - Morris, JJ, Johnson, ZI, Szul, MJ, Keller, M, and Zinser, ER. "Dependence of the cyanobacterium Prochlorococcus on hydrogen peroxide scavenging microbes for growth at the ocean's surface." PLoS ONE 6, no. 2 (2011). Full Text
  - Ringuet, S, Sassano, L, and Johnson, ZI. "A suite of microplate reader-based colorimetric methods to quantify ammonium, nitrate, orthophosphate and silicate concentrations for aquatic nutrient monitoring." Journal of Environmental Monitoring 13, no. 2 (2011): 370-376. Full Text
  - Wang, G, and Johnson, ZI. "Impact of parasitic fungi on the diversity and functional ecology of marine phytoplankton." (January 1, 2011): 205-222. (Chapter)
  - Gao, Z, Johnson, ZI, and Wang, G. "Molecular characterization of the spatial diversity and novel lineages of mycoplankton in Hawaiian coastal waters." ISME Journal 4, no. 1 (2010): 111-120. Full Text
  - Johnson, ZI, Shyam, R, Ritchie, AE, Mioni, C, Lance, VP, Murray, JW, and Zinser, ER. "The effect of iron-and light-limitation on phytoplankton communities of deep chlorophyll maxima of the western Pacific Ocean." Journal of Marine Research 68, no. 2 (2010): 283-308. Full Text
  - Marchetti, A, Varela, D, Lance, VP, Johnson, ZI, and Armbrust, EV. "Iron and silic acid controls on phytoplankton composition and productivity assessed by Si, C, and N utilization in the central equatorial Pacific Ocean." Limnology and Oceanography 55 (2010): 11-29. (Academic Article) Link to Item
  - Marchetti, A, Varela, DE, Lance, VP, Johnson, Z, Palmucci, M, Giordano, M, and Armbruste, EV. "Iron and silicic acid effects on phytoplankton productivity, diversity, and chemical composition in the central equatorial Pacific Ocean." Limnology and Oceanography 55, no. 1 (2010): 11-29.
  - Johnson, ZI, and Lin, Y. "Prochlorococcus: Approved for export." Proceedings of the National Academy of Sciences of the United States of America 106, no. 26 (2009): 10400-10401. Full Text
  - Zinser, ER, Lindell, D, Johnson, ZI, Futschik, ME, Steglich, C, Coleman, ML, Wright, MA, Rector, T, Steen, R, McNulty, N, Thompson, LR, and Chisholm, SW. "Choreography of the transcriptome, photophysiology, and cell cycle of a minimal photoautotroph, Prochlorococcus." PLoS ONE 4, no. 4 (2009). Full Text
  - Hiscock, MR, Lance, VP, Apprill, AM, Bidigare, RR, Johnson, ZI, Mitchell, BG, Jr, WOS, and Barber, RT. "Photosynthetic maximum quantum yield increases are an essential component of the Southern Ocean phytoplankton response to iron." Proceedings of the National Academy of Sciences of the United States of America 105, no. 12 (2008): 4775-4780. Full Text
  - Morris, JJ, Kirkegaard, R, Szul, MJ, Johnson, ZI, and Zinser, ER. "Facilitation of robust growth of Prochlorococcus colonies and dilute liquid cultures by "helper" heterotrophic bacteria." Applied and Environmental Microbiology 74, no. 14 (2008): 4530-4534. Full Text
  - Johnson, ZI, and Sheldon, TL. "A high-throughput method to measure photosynthesis-irradiance curves of phytoplankton." Limnology and Oceanography: Methods 5, no. 11 (November 1, 2007): 417-424. Full Text
  - Johnson, ZI, and Sheldon, TL. "A high-throughput method to measure photosynthesis-irradiance curves of phytoplankton." Limnology and Oceanography: Methods 5, no. NOV (2007): 417-424.
  - Zinser, ER, Johnson, ZI, Coe, A, Karaca, E, Veneziano, D, and Chisholm, SW. "Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean." Limnology and Oceanography 52, no. 5 (2007): 2205-2220.
  - Johnson, ZI, Zinser, ER, Coe, A, McNulty, NP, Woodward, EMS, and Chisholm, SW. "Niche partitioning among Prochlorococcus ecotypes along ocean-scale environmental gradients." Science 311, no. 5768 (2006): 1737-1740. Full Text
  - Tolonen, AC, Aach, J, Lindell, D, Johnson, ZI, Rector, T, Steen, R, Church, GM, and Chisholm, SW. "Global gene expression of Prochlorococcus ecotypes in response to changes in nitrogen availability." Molecular Systems Biology 2 (2006). Full Text
  - Zinser, ER, Coe, A, Johnson, ZI, Martiny, AC, Fuller, NJ, Scanlan, DJ, and Chisholm, SW. "Prochlorococcus ecotype abundances in the North Atlantic ocean as revealed by an improved quantitative PCR method." Applied and Environmental Microbiology 72, no. 1 (2006): 723-732. Full Text
  - Gopalakrishna, VV, Johnson, Z, Salgaonkar, G, Nisha, K, Rajan, CK, and Rao, RR. "Observed variability of sea surface salinity and thermal inversions in the Lakshadweep Sea during contrast monsoons." Geophysical Research Letters 32, no. 18 (2005): 1-4. Full Text
  - Lindell, D, Jaffe, JD, Johnson, ZI, Church, GM, and Chisholm, SW. "Photosynthesis genes in marine viruses yield proteins during host infection." Nature 438, no. 7064 (2005): 86-89. Full Text
  - Coale, KH, Johnson, KS, Chavez, FP, Buesseler, KO, Barber, RT, Brzezinski, MA, Cochlan, WP, Millero, FJ, Falkowski, PG, Bauer, JE, Wanninkhof, RH, Kudela, RM, Altabet, MA, Hales, BE, Takahashi, T, Landry, MR, Bidigare, RR, Wang, X, Chase, Z, Strutton, PG, Friederich, GE, Gorbunov, MY, Lance, VP, Hilting, AK, Hiscock, MR, Demarest, M, Hiscock, WT, Sullivan, KF, Tanner, SJ, Gordon, RM, Hunter, CN, Elrod, VA, Fitzwater, SE, Jones, JL, Tozzi, S, Koblizek, M, Roberts, AE, Herndon, J, and Brewster, J et al. "Southern Ocean Iron Enrichment Experiment: Carbon Cycling in High- and Low-Si Waters." Science 304, no. 5669 (2004): 408-414. Full Text
  - Johnson, ZI, and Chisholm, SW. "Properties of overlapping genes are conserved across microbial genomes." Genome Research 14, no. 11 (2004): 2268-2272. (Academic Article) Full Text Link to Item
  - Johnson, ZI, and Chisholm, SW. "Properties of overlapping genes are conserved across microbial genomes." Genome Research 14, no. 11 (2004): 2268-2272. Full Text
  - Johnson, ZI. "Development and application of the Background Irradiance Gradient - Single Turnover Fluorometer (BIG-STf)." Marine Ecology Progress Series 283 (2004): 73-80. (Academic Article) Link to Item
  - Johnson, ZI. "Description and application of the background irradiance gradient-single turnover fluorometer (BIG-STf)." Marine Ecology Progress Series 283 (2004): 73-80.
  - Lindell, D, Sullivan, MB, Johnson, ZI, Tolonen, AC, Rohwer, F, and Chisholm, SW. "Transfer of photosynthesis genes to and from Prochlorococcus viruses." Proceedings of the National Academy of Sciences of the United States of America 101, no. 30 (2004): 11013-11018. Full Text
  - Johnson, Z, and Barber, RT. "The low-light reduction in the quantum yield of photosynthesis: Potential errors and biases when calculating the maximum quantum yield." Photosynthesis Research 75, no. 1 (2003): 85-95. Full Text
  - Rocap, G, Larimer, FW, Lamerdin, J, Malfatti, S, Chain, P, Ahlgren, NA, Arellano, A, Coleman, M, Hauser, L, Hess, WR, Johnson, ZI, Land, M, Lindell, D, Post, AF, Regala, W, Shah, M, Shaw, SL, Steglich, C, Sullivan, MB, Ting, CS, Tolonen, A, Webb, EA, Zinser, ER, and Chisholm, SW. "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche differentiation." Nature 424, no. 6952 (2003): 1042-1047. Full Text
  - Johnson, Z, Bidigare, RR, Goericke, R, Marra, J, Trees, C, and Barber, RT. "Photosynthetic physiology and physicochemical forcing in the Arabian Sea, 1995." Deep-Sea Research Part I: Oceanographic Research Papers 49, no. 3 (2002): 415-436. Full Text
  - Barber, RT, Marra, J, Bidigare, RC, Codispoti, LA, Halpern, D, Johnson, Z, Latasa, M, Goericke, R, and Smith, SL. "Primary productivity and its regulation in the Arabian Sea during 1995." Deep-Sea Research Part II: Topical Studies in Oceanography 48, no. 6-7 (2001): 1127-1172. Full Text
  - Johnson, Z, and Howd, P. "Marine photosynthetic performance forcing and periodicity for the Bermuda Atlantic Time Series, 1989-1995." Deep-Sea Research Part I: Oceanographic Research Papers 47, no. 8 (2000): 1485-1512. Full Text
  - Johnson, Z, Landry, ML, Bidigare, RR, Brown, SL, Campbell, L, Gunderson, J, Marra, J, and Trees, C. "Energetics and growth kinetics of a deep Prochlorococcus spp. population in the Arabian Sea." Deep-Sea Research Part II: Topical Studies in Oceanography 46, no. 8-9 (1999): 1719-1743. Full Text
  - Barber, RT, Borden, L, Johnson, Z, Marra, J, Knudson, C, and Trees, CC. "Ground truthing modeled k_PAR and on-deck primary productivity incubations with in-situ observations." Proceedings of SPIE - The International Society for Optical Engineering 2963 (1997): 834-839. Full Text
  - Bidigare, RR, Latasa, M, Johnson, Z, Barber, RT, Trees, CC, and Balch, WM. "Observations of a Synechococcus-dominated cyclonic eddy in open-oceanic waters of the Arabian Sea." Proceedings of SPIE - The International Society for Optical Engineering 2963 (1997): 260-265. Full Text
  - Johnson, Z. "Modeled inherent scattering properties of small light-limited phytoplankton: Implications for deep phytoplankton size class distributions." Proceedings of SPIE - The International Society for Optical Engineering 2963 (1997): 862-867. Full Text
  - Marra, J, Barber, RT, Trees, CC, Johnson, Z, and Kinkade, C. "Primary production and irradiance during an intermonsoon cruise to the Arabian Sea (November, 1995)." Proceedings of SPIE - The International Society for Optical Engineering 2963 (1997): 302-307. Full Text
Teaching & Mentoring
Recent Courses
- BIOLOGY 293A: Research Independent Study 2017
- BIOLOGY 369LA: Biological Oceanography 2017
- BIOLOGY 493: Research Independent Study 2017
- BIOLOGY 704LA: Biological Oceanography 2017
- ENVIRON 369LA: Biological Oceanography 2017
- ENVIRON 393A: Research Independent Study 2017
- ENVIRON 593: Independent Studies and Projects 2017
- ENVIRON 704LA: Biological Oceanography 2017
- ENVIRON 899: Master's Project 2017
- EOS 273LA: Biological Oceanography 2017
- EOS 393A: Research Independent Study 2017
- EOS 704LA: Biological Oceanography 2017
- ENVIRON 849A: Doctoral Student Seminar and Professional Development 2016
- EOS 394A: Research Independent Study 2016
- BIOLOGY 493A: Research Independent Study 2015
- BIOLOGY 579LA: Biological Oceanography 2015
- ENVIRON 579LA: Biological Oceanography 2015
- EOS 579LA: Biological Oceanography 2015
Scholarly, Clinical, & Service Activities
Outreach & Engaged Scholarship
- Bass Connections Faculty Team Member. Ocean Energy: Products and Pollutants. August 2017 - May 2018 2017 - 2018

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Education, Training, & Certifications

Duke Appointment History

In the News

Selected Grants

Selected Publications

Journal Articles

Recent Courses

Outreach & Engaged Scholarship