Ocean Acidification & Harmful Algal Blooms: Defining a Research Agenda

A virtual workshop August 11-13th, 2020

Hosted by NOAA's National Centers for Coastal Ocean Science and Ocean Acidification Program

During June and July a webinar series set the foundation for the workshop - a recording of all of the presentations can be found below!

Contact elizabeth.turner@noaa.gov with any questions about the workshop or webinars!


This workshop aimed to determine a few tractable OA-HAB research priorities for potential  inclusion in an upcoming RFP during our time together by identifying:  

  • gaps in OA-HAB research; and
  • potential useful research products that incorporate OA-HAB interactions

  • view AGENDA 



    June 17th                          2pmET

                               June 24th  1:30pmET     

    June 26th    1:00pmET


    June 29th  1:00pmET


      July 8th           1:00pmET

                                            July 10th   1::30pmET

                                    July 13th    2:00pmET

      July 15th    2:00pmET


    Chris Gobler, Stonybrook University

    Raphe Kudela, University of California Santa Cruz

    Hans Paerl, University of North Carolina

    Clarissa Anderson, University of California San Diego; Samantha Siedlecki, University of Connecticut; Jan Newton University of Washington

    Beth Stauffer, University of Louisiana

    Regan Errera, Great Lakes Environmental Research Laboratory

    Melissa McCutcheon, Texas A&M Corpus Christi\

    Kris Holderied, NOAA National Centers for Coastal Ocean Science


    HABs and ocean acidification: Additive, synergistic, antagonistic, or otherwise?

    Synergies Between OAH and HAB Networks: California as a Case Study

    Acidification, eutrophication and HABs in estuarine waters:  What do long-term data tell us?

    Modeling and Forecasting OA and HABs to meet stakeholders needs – Regional Perspectives                                                                                                                                                                                                                                                                                                                                                                    

    A marginal sea of variability in ocean acidification and harmful algal blooms in the Gulf of Mexico

    Acidification and Harmful Algal Blooms in the Great Lakes                                                                  

                                                                                                 Effects of Ocean Acidification on HABs: A review of what we do and don't know

    Alaska Acidification and HABs: Networking and coastal variability


    HABs and ocean acidification: Additive, synergistic, antagonistic, or otherwise?

    Presented by: Chris Gobler, Stony Brook University, June 17th, 2020

    Wednesday, June 17, 2020

    Harmful algal blooms and ocean acidification have emerged as two expanding threats to coastal ecosystems.  While climate-change driven ocean acidification is expected to alter marine ecosystems through this century, the dynamic nature of carbon cycling in coastal zones can lead to seasonal and diel changes in pH and CO2 concentrations that can exceed changes expected for open ocean ecosystems by the end of the century.  Harmful algal blooms occur in these dynamic coastal zones and several HAB species and/or strains respond to increased COconcentrations with increases in growth rate and/or cellular toxin content, while others are unaffected. Beyond the effects of altered C concentrations and speciation on HABs, changes in pH in natural waters are also likely to have profound effects on algal physiology.  Regardless of how acidification affects HABs, it is a clear environmental threat to a suite of calcifying invertebrates as well as other marine organisms including early life stage fish.  While HABs and acidification co-occur on coastal zones, their combined effects on marine life are very poorly understood.  This talk will explore interactions between ocean acidification and HABs and implications of their co-occurrence for ocean organisms.


        PDF of the presentation

        View the recording and complete the post webinar questionnaire


    Categories: HAB_OA_Workshop |  Tags:

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