ICES-IOC Working Group on Harmful Algal Blooms Dynamics The report of the International Council for the Exploration of the Sea (ICES) and Intergovernmental Oceanographic Commission of UNESCO (IOC) Working Group on Harmful Algal Bloom Dy namics (ICES-IOC WGHABD) is now available on the ICES website (http:// www.ices.dk/community/groups/Pages/WGHABD.aspx). ICES-IOC WGHABD met on three occasions to address 11 terms of reference (ToRs) during the three year reporting period; April 2015 (hosted by Teresa Moita and Alexandra Silva, IPMA, Lisbon, Portugal), April 2016 (hosted by Raffaele Siano, IFREMER, Brest, France), and April 2017 (hosted by Anke Kremp, SYKE, Helsinki, Finland (Fig. 1)). Three terms of reference contributed to the work of the IOC Intergovernmental Panel on Harmful Algal Blooms (IOC IPHAB). A manuscript on fish killing algae produced by ICES-IOC WGHABD will feed into the IPHAB task team on fish killing algae. ICES-IOC WGHABD have updated and quality controlled data in the IOC-ICES-PICES Harmful Algal Event Database (HAEDAT). Maps showing the regional distribution of harmful algal events presented at ICESIOC WGHABD using data from HAEDAT from 2014 2016 are included in the report. ICES-IOC WGHABD is producing a Harmful Algal Event status report for the ICES area during 2018. This status report will be the ICES contribution to the Global HAB Status Report currently in production (see article by Hallegraeff et al. in this issue). A dynamic range of new findings were presented each year with summaries included in ICES-IOC WGHABD annual reports from 2015 - 2017. These presentations encompassed studies performed with the latest technologies or approaches and include the use of technologies such as the Imaging Flow Cytobot to examine HABs in the USA and Sweden, citizen science in France, the use of sediment cores to reconstruct the history of toxic Nodularia spumigena blooms in the Baltic Sea and Oslofjorden, development of early warning systems in the UK and social unrest in Chile as a result of HABs. ICES-IOC WGHABD also reviewed the OSPAR JAMP Eutrophication Guidelines on phytoplankton species composition and participated in the subsequent advisory drafting group ADGJAMP during 2015. The WG also contributed to the organization of the ICES-PICES-IOC scientific symposium on climate change and harmful algal blooms held 19 22nd May 2015, Gothenburg, Sweden. More than 60 scien- tists from across the globe participated. A major output of this symposium is the peer reviewed publication, Wells, M.L. et al., (2015). Harmful algal blooms and climate change: Learning from the past and present to forecast the future. Harmful Algae, 49:6893. The WG also reviewed the use of molecular probes, qPCR methods targeting toxin producing genes and metabarcoding of HABs, as well as the state of knowledge of BMAA, the amino compound ß-methylamino alanine. The dynamics of Gymnodinium catenatum in the Iberian Peninsula, Alexandrium minutum in the Bay of Brest and A. ostenfeldii and cyanobacteria in the Baltic were also reviewed with summaries of presentations included in ICES-IOC WGHABD annual reports. The next meeting of ICES-IOC WGHABD will take place from 23rd 26th April 2018, hosted by Dr Margarita Fernandez Tejedor from IRTA, Sant Carles de la Ràpita, Tarragona, Spain. Authors Eileen Bresnan, Marine Scotland Science, Marine Laboratory, Aberdeen, U.K. Henrik Enevoldsen, Head, IOC Science and Communication Centre on Harmful Algae, Copenhagen, Denmark. Email: Eileen.Bresnan@gov.scot h.enevoldsen@unesco.org Fig. 1. Participants at the ICES-IOC WGHABD hosted by Dr. Anke Kremp at SYKE, Helsinki, Finland, April 2017. 10 HARMFUL ALGAE NEWS NO. 58 / 2017 Harmful Algae News An IOC Newsletter on Toxic Algae and Algal Blooms No. 58 - November 2017 www.ioc-unesco.org/hab Call to Contribute to Global Harmful Algal Bloom Status Reporting From 25 to 28 September 2017 sixteen HAB experts from 13 countries gathered at the headquarters of the IOC IODE (Inte the first of which will be launched in Nantes. Follow the development of the Global HAB Status Report at http://haedat. iode.org/ and see who is involved and how you may engage. Acknowledgements We thank Ward Appeltans and Pieter Provoost at the IOC/IODE Project Office for hospitality and technical PSP# # # # # # DSP# # # # # # AZP# ! ! ! Fig. 4. Maps showing the incidence of PSP, DSP and AZP during the period 2014 to 2016 in the North Atlantic as reported by the ICES-IOC WG HABD. Areas such as Northern Canada and Greenland are not routinely sampled and countries with pink borders have sti Pelagic Sargassum reaching Serranilla Bank, Caribbean Colombia, may pose a risk to baby turtles Fig. 1. Location of Serranilla Bank in the Caribbean Sea (Photo Wikipedia) Floating Sargassum has been known from centuries to occur in the Atlantic Ocean, in a region named the Sargasso Sea. Floating S NEW!! Harmful Algal Blooms (HABs) and Desalination: A Guide to Impacts, Monitoring, and Management Manuals and Guides 78 Harmful Algal Blooms (HABs) and Desalination: A Guide to Impacts, Monitoring, and Management Fig. 3. Sargassum accumulation as a thick mat on the nesting beach Edited by: Dona A red tide event associated with the dinoflagellate Karenia mikimotoi in the Firth of Clyde, Scotland Fig. 1. Maximum abundance of K. mikimotoi by month and year for monitoring sites in Scottish coastal waters. The densest bloom observed exceeded 4 million cells per litre in July 2016. The potenti Fig. 5. Theoretical effect of the K. mikimotoi bloom on background dissolved oxygen concentration (black horizontal dashed line: Firth of Clyde summer averaged SEPA data 2005-2015). Cell density was sufficient to cause hypoxia on 3 occasions at 4.59mg L-1[8] or once at 2mg L-1 (grey dashed lines). A First evidence of high saxitoxin concentration in Crassostrea iridiscens associated with Gymnodinium catenatum blooms at Banderas Bay, Jalisco México Fig. 1. Location of sampling stations in Banderas Bay Jalisco México during Gymnodinium catenatum bloom from March to June of 2017. Banderas Bay has Fig. 2. High saxitoxin concentration in Crassostrea iridiscens associated with Gymnodinium catenatum blooms in Banderas Bay, Jalisco México. Fig. 4. Micrographs of live cells of Gymnodinium catenatum from Banderas Bay at 400x (a) and 200x (b); Seawater discoloration due to a G. catenatum patch duri ICES-IOC Working Group on Harmful Algal Blooms Dynamics The report of the International Council for the Exploration of the Sea (ICES) and Intergovernmental Oceanographic Commission of UNESCO (IOC) Working Group on Harmful Algal Bloom Dy namics (ICES-IOC WGHABD) is now available on the ICES website ( SEAFDEC-MFRD Regional Training Course in Malaysia Harmful algal blooms (HAB) and their socio-economic impacts are recognized internationally due to the negative impacts from HABs on the the coastal ecosystem, safety and security of food and drinking water, and human health hazards. Some incidents an Forthcoming events Workshop on morpho-molecular methods for the study of dinoflagellate cysts ICES-IOC-IMO Working Group on Ballast and Other Ship Vectors 5-7 March 2018 Monday 12th and Tuesday 13th February 2018 Location: Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand Organi the 18th international conference on harmful algae from ecosystems to socio-ecosystems SAVE the date! FATMA GUELLATI/UPMC-UNIV BADJI MOKHTAR Minyvel Environnement/Phenomer Nicolas Chomérat/IFREmer Véronique Séchet/IFREmer Olivier BARBAROUX/IFREmer Stéphane LESBATS/IFREmer Olivier DUG Rex Munday in Memoriam Dr Rex Munday, an internationally renowned toxicologist, sadly passed away on the 20th July this year. His wife Christine, daughter Sarah (Finch) and son John were with him. Rex published with all his family at different times, an example being the paper Munday, Munday and Mun Rex Mundays HAB research highlights Discovery of Tetrodotoxin in grey side-gilled sea slugs: Rex had a sharp wit, best illustrated with an anecdote from 2013. We had collected hundreds of samples to explain why dogs were dying on Auckland beaches and sent twelve to Rex for toxicity screening using l ! Oostende OBIS/HAEDAT training workshop participants. Eds-in-chief Beatriz Reguera, IEO, Vigo, Spain Eilen Bresnan, MARLAB, Scotland, UK Regional Editors Caribbean: Ernesto Mancera jemancerap@unal.edu.co Europe: Philip Hess Philipp.Hess@ifremer.fr India: K.B. Padmakumar kbpadmakumar@gmail.c