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The California State University


  • Smith, J., A.G. Gellene, K.A. Hubbard, H.A. Bowers, R.M. Kudela, K. Negrey and D.A. Caron. 2017. Pseudo-nitzschia species composition affects domoic acid in the phytoplankton during two consecutive years in the Southern California Bight. Journal of Plankton Research 40: 29-45.

  • Ryan, J.P., R.M. Kudela, J.M. Birch, M. Blum, H.A. Bowers, F.P. Chavez, G.J. Doucette, K. Hayashi, R. Marin, C.M. Mikulski, J.T. Pennington, C.A. Scholin, G.J. Smith, A. Woods and Y. Zhang. 2017. Causality of an extreme harmful algal bloom in Monterey Bay, California during the 2014-2016 northeast Pacific warm anomaly. Geophysical Research Letters 44.

  • Bowers, H., R. Marin, J.M. Birch and C.A. Scholin. 2017. Sandwich hybridization probes for the detection of Pseudo-nitzschia (Bacillariophyceae) species: an update to existing probes and a description of new probes. Hamrful Algae 70: 37-51.

  • . 2017. Sensors for Monitoring of Harmful Algae, Cyanobacteria and their Toxins. Technical Report No. WS01-17. Alliance for Coastal Technologies, .

  • Bowers, H., R. Marin III, J. Birch, C.A. Scholin and G. Doucette. 2016. Recovery and identification of Pseudo-nitzschia (Bacillariophyceae) frustules from natural samples acquired using the environmental sample processor (ESP). Journal of Phycology 52: 135-140.

  • Hanif, A., W. Dyson, H. Bowers, J. Pitula, G. Messick, R. Jagus and E. Schott. 2013. Variation in spatial and temporal incidence of the crustacean pathogen Hematodinium perezi in environmental samples from Atlantic Coastal Bays. Aquatic Biosystems 9: 11-11.

  • Thessen, A.E., L.M. Clough, A. Whiting, H. Bowers and G. Boyer. 2012. A recurring toxic marine cyanobacteria bloom above the Arctic Circle. Harmful Algae News 46: 12-15.

  • Bowers, H., A. Brutemark, W. Carvalho and E. Graneli. 2010. COMBINING FLOW CYTOMETRY AND REAL-TIME PCR METHODOLOGY TO DEMONSTRATE CONSUMPTION BY PRYMNESIUM PARVUM. Journal of the American Water Resources Association 46: 133-143.

  • Bowers, H., A. Brutemark, W. Carvalho and E. GranĂ©li. 2010. Combining Flow Cytometry and Real-Time PCR Methodology to Demonstrate Consumption byPrymnesium parvum. JAWRA Journal of the American Water Resources Association 46: 133-143.

  • Bowers, H., G. Messick, A. Hanif, R. Jagus, L. Carrion, O. Zmora and E. Schott. 2010. Physicochemical properties of double-stranded RNA used to discover a reo-like virus from blue crab Callinectes sapidus. Diseases of Aquatic Organisms 93: 17-29.

  • Thessen, A., H.A. Bowers and D. Stoecker. 2009. Intra- and inter-species differences in Pseudo-nitzschia growth and toxicity while utilizing different nitrogen sources. Harmful Algae 8: 792-810.

  • Riisberg, I., R. Orr, R. Kluge, K. Shalchian-Tabrizi, H. Bowers, V. Patil, B. Edvardsen and K. Jakobsen. 2009. Seven Gene Phylogeny of Heterokonts. Protist 160: 191-204.

  • Hall, N., R. Litaker, E. Fensin, J. Adolf, H. Bowers, A. Place and H. Paerl. 2008. Environmental Factors Contributing to the Development and Demise of a Toxic Dinoflagellate ( Karlodinium veneficum ) Bloom in a Shallow, Eutrophic, Lagoonal Estuary. Estuaries and Coasts 31: 402-418.

  • Bowers, H. 2008. Development and application of real-time PCR assays for the study of harmful algal bloom (HAB) species. .

  • Burkholder, J., G. Hallegraeff, G. Melia, A. Cohen, H. Bowers, D. Oldach, M. Parrow, M. Sullivan, P. Zimba and E. Allen. 2007. Phytoplankton and bacterial assemblages in ballast water of U.S. military ships as a function of port of origin, voyage time, and ocean exchange practices. Harmful Algae 6: 486-518.

  • Morris, J., L. Grattan, L. Wilson, W. Meyer, R. McCarter, H. Bowers, J. Hebel, D. Matuszak and D. Oldach. 2006. Occupational Exposure to Pfiesteria Species in Estuarine Waters Is Not a Risk Factor for Illness. Environmental Health Perspectives 114: 1038-1043.

  • Bowers, H., T. Trice, R. Magnien, D. Goshorn, B. Michael, E. Schaefer, P. Rublee and D. Oldach. 2006. Detection of Pfiesteria spp. by PCR in surface sediments collected from Chesapeake Bay tributaries (Maryland). Harmful Algae 5: 342-351.

  • Bowers, H., C. Tomas, T. Tengs, J. Kempton, A. Lewitus and D. Oldach. 2006. RAPHIDOPHYCEAE [CHADEFAUD EX SILVA] SYSTEMATICS AND RAPID IDENTIFICATION. Journal of Phycology 42: 1333-1348.

  • Tengs, T., H. Bowers, H. Glasgow, J. Burkholder and D. Oldach. 2003. Identical ribosomal DNA sequence data from Pfiesteria piscicida (Dinophyceae) isolates with different toxicity phenotypes. Environmental Research 93: 88-91.

  • Bowers, H., T. Tengs, H. Glasgow, J. Burkholder, P. Rublee and D. Oldach. 2002. Development of real-time PCR assays for rapid detection of Pfiesteria piscicida and related dinoflagellates (vol 66, pg 4641, 2000). Applied and Environmental Microbiology 68: 3180-3180.

  • Jakobsen, K., T. Tengs, A. Vatne, H. Bowers, D. Oldach, J. Burkholder, J. Howard B. Glasgow, P. Rublee and D. Klaveness. 2002. Discovery of the toxic dinoflagellate Pfiesteria in northern European waters. Proceedings of the Royal Society of London. Series B: Biological Sciences 269: 211-214.

  • Rublee, P., J. Kempton, E. Schaefer, C. Allen, J. Harris, D. Oldach, H. Bowers, T. Tengs, J. Burkholder and H. Glasgow. 2001. Use of molecular probes to assess geographic distribution of Pfiesteria species. Environmental Health Perspectives 109: 765-767.

  • Tengs, T., H. Bowers, A. Ziman, D. Stoecker and D. Oldach. 2001. Genetic polymorphism in Gymnodinium galatheanum chloroplast DNA sequences and development of a molecular detection assay. Molecular Ecology 10: 515-523.

  • Oldach, D., C. Delwiche, K. Jakobsen, T. Tengs, E. Brown, J. Kempton, E. Schaefer, H. Bowers, H. Glasgow and J. Burkholder. 2000. Heteroduplex Mobility Assay-Guided Sequence Discovery. Proceedings of the National Academy of Sciences of the United States of America 97: 4303-4308.

  • Bowers, H., T. Tengs, H. Jr, J. Burkholder, P. Rublee and D. Oldach. 2000. Development of Real-Time PCR Assays for Rapid Detection of Pfiesteria piscicida and Related Dinoflagellates. Applied and Environmental Microbiology 66: 4641-4648.

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Educational Background

  • 2008 – PhD, University of Kalmar, Sweden (Aquatic Ecology)

  • 2000 – MS, Johns Hopkins University, Maryland (Environmental Science)

  • 1995 – BS, Salisbury State University, Maryland (Biology)

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  • Advancing portable detection capabilities of Harmful Algal Bloom species in California waters

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Positions & Honors

  • 2018-2021 – co-Chair, National Harmful Algal Bloom Committee (elected)

  • 2016-2018 – member, National Harmful Algal Bloom Committee

  • 2012-2016 – post-doc fellow, Monterey Bay Aquarium Research Institute

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