Training the next generation.


The theme of this year's 9th US Symposium on Harmful Algae will reflect the shift in the current climate in the field. Harmful algae and its environmental effects are becoming better understood by scientists, and this meeting will hopefully serve as a means to usher in new ideas and ways of researching and treating harmful algae that will be embraced by the next generation of researchers in the field.

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We encourage everyone who works on harmful algae issues to attend the only national conference focused exclusively on HABs. Whether your focus is freshwater or marine systems, microalgae or macroalgae, basic research and monitoring, or policy and management there will be opportunities for you to learn and discuss all facets of HAB studies. Students, established HAB folks, managers and scientists from NGOs, academic institutions, and local, state and federal agencies are invited to join us in Baltimore. Sign up for workshops preceding the meeting that will provide hands-on training opportunities in the identification of HAB species using microscopy, toxin detection techniques, molecular algal species and toxin identification, and the latest analytical tools used in HAB science.


Areas covered at the symposium.


At the 9th US Symposium on Harmful Algae, we hope to provide a comprehensive look at harmful algae and its impacts on the US marine environment. The highlighted topics below will comprise some of the foundations of the symposium. If you feel that there is an important topic area that is not being represented, please let us know in our contact section. 



HAB Ecology 


Environmental conditions influence the physiological state of HAB species, affecting their competitiveness in natural assemblages of phytoplankton, susceptibility to grazers and parasites, and their production of toxins. Studies of HAB physiology, from genes and gene function through community interactions, will be addressed in this session. Presentations may focus on cultured HAB species or natural communities of freshwater, brackish or marine ecosystems.

Emerging Technologies


The symposium will highlight new developments in instrumentation, emerging technologies, and autonomous platforms that can be used to monitor and detect HABs in the context of observing programs (such as, but not limited to, IOOS and GLEON). Presentations that discuss new and emerging methodologies that cover all aspects of freshwater and marine HABs are welcomed.


Fish Kills

harmful algal blooms resulting in fish kills

Studies investigating the toxicity and pathogenicity of freshwater and marine bioactive compounds on human and animal health will be highlighted.

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HAB Modeling


The symposium will include freshwater, brackish and marine HAB modeling, including prediction, forecasting, operational forecasting systems, and hindcasting. Tools and products that support management and mitigation decisions will also be discussed.



The 9th US Symposium on Harmful Algae will be taking place at the Sheraton Inner Harbor Hotel in Baltimore, MD.


Want to host the 10th US HAB?

The National HAB Committee (NHC) is soliciting letters of intent (LOIs) to host the Tenth Symposium on Harmful Algae, to be held in 2019. If you are interested in hosting the next US HAB symposium, please visit the NHC website (link below) for instructions on completing a LOI.  LOIs should be sent to me ( by August 13.  Potential hosts should also plan on giving a brief presentation at the Ninth US HAB symposium this fall.