Meeting of the GlobalHAB Scientific Steering Committee, Glasgow, Scotland, May 2022 On May 14th -15th, 2022, the Scientific Steering Committee (SSC) of the IOCSCOR programme, GlobalHAB, celebrated its first hybrid meeting in Glasgow, UK, following virtual meetings throughout the Covid19 pandemic. The GlobalHAB programme was launched in 2016 and the first SSC membership was partially renewed through a virtual meeting in May 2020. Since then, periodic meetings were held virtually in order to manage and make progress on implementing the programmes terms of reference and action items. Unfortunately, not all members of the SSC could travel to Glasgow, and therefore joined virtually (picture below). The SSC meeting, co-sponsored by IOC-SCOR GlobalHAB, NOAA National Centers for Coastal Ocean Science (NCCOS), the U.S. Integrated Ocean Observing System (IOOS) and the EuroMarine European Research Network, was held following the Workshop on Modelling and Prediction held on May 9-13, 2022 at the University of Strathclyde. The outputs of the workshop are currently being processed and reviewed and will be soon made available to the international community. After being postponed for the last two years during the pandemic, participants were delighted to finally attend the Workshop to present and discuss various aspects of modelling and prediction of HABs. A series of webinars were conducted in 2021 as a preparatory activity for this workshop. The SSC reviewed the forthcoming activities that had been also postponed in the 2020-2021 period.. These activities include: l l 20 The GlobalHAB symposium on automated in situ observations of plankton, to be held in Kristineberg Marine Research Station, Sweden, this August 2022, coordinated by Bengt Karlson. The Workshop on Sargassum, in preparation now, to be held in Mexico, coordinated by Brigitta van Tussenbroek and the GlobalHAB Subcommittee on Sargassum. l l The qPCR workshop organized by Raffaele Siano which aims at promoting the use of eDNA approaches in monitoring harmful algae and specifically the use of qPCR for species detection. The workshop will convey international experts on HAB qPCR approaches in order to foresee to which extent eDNA and qPCR can be used in HAB monitoring. Virtual meetings will be organised before the in person meeting in 2023. A workshop on solutions to control HABs in marine and estuarine waters co-organized by Vera Trainer and Marc Suddleson in coordination with PICES and ISSHA. This workshop will build on lessons learned from freshwater HAB control. The SSC also analyzed the objectives of the 13 Themes that structure GlobalHAB to identify new activities for the last period of the programme, i.e. from 2023 to 2025. One objective of this new period is to engage the international community working on HAB research through projects endorsement. The GlobalHAB programme was implemented to serve scientists and resource managers covering the full breadth of marine and freshwater harmful algal bloom research. Endorsement by GlobalHAB can help foster international collaborations that are fundamental for the progress of our knowledge on HABs dynamics, their prediction and mitigation of their impacts. The GlobalHAB SSC has committed itself to increase communication with the international community by encouraging endorsement by GlobalHAB and by strengthening the links with IOC regional groups such as ANSA, FANSA, HANA, WESTPAC, etc. Another objective is to consolidate information on freshwater HAB monitoring programmes, to better understand the global impact of freshwater HABs, data gaps, and trends. Finally, GlobalHAB explored ways to actively participate in the United Nations Decade of Ocean Science for Sustainable Development (2021-2030) and contribute to the UN Sustainable Development Goals, a call for action by all countries poor, rich and middleincome to promote prosperity while protecting the planet. The GlobalHAB endorsement application form available from the webpage. GlobalHAB webpage (www.globalhab.info) or on request from yu.sun@ unesco.org. Members of the SSC at the Merchants House of Glasgow and screenshots during the remote connection. Bottom image, from left to right, first line: Aletta Yñiguez, Elisa Berdalet, Heather Raymond; second line: Clarissa Anderson, Sun Yun, Malin Olofsson, Bengt Karlson, Neil Banas, Raffaele Siano, Dave Clarke. Po Teen Lim (top, right picture), Raphael Kudela (middle, right picture), and Marc Suddleson (not pictured) joined virtually. HARMFUL ALGAE NEWS NO. 70 / 20221 Harmful Algae News An IOC Newsletter on Toxic Algae and Algal Blooms No. 70 - July 2022 https://hab.ioc-unesco.org/ Mar Menor lagoon: an iconic case of ecosystem collapse Content Featured articles Mar Menor lagoon: an iconic case of ecosystem collapse, Juan M Ruiz, Jaime BernardeauEsteller, M Dolo nodosa present in Mar Menor at least in the last decades. Caulerpa contains high levels of toxigenic secondary metabolites and contributes loads of labile organic matter to the sediments. Decomposition of this organic matter fuels anoxic processes and increased levels of reduced carbon, nitrogen and age basin and is a major source of European winter vegetable production. But the transferred water resources, clearly insufficient to sustain such production, had to be complemented with aquifers that had suffered previous overexploitation and became brackish. These brackish aquifers needed treating Fig. 3. Satellite image (Sentinel 2) after torrential rainfall in September 12th and 13th in the Mar Menor watershed. Tons of terrigenous sediments, carbon, nitrogen and phosphorous are dragged by water runoff from agricultural lands into the Mar Menor lagoon (downloaded from https://www. copernicus provided by President and Staff of the harbours Club Nautico Lo Pagán, Club Náutico La Puntica and Centro de Actividades Náuticas (San Pedro del Pinatar, Murcia, Spain). References 1. Ruiz JM et al 2020. Informe de asesoramiento técnico del IEO, 165pp 2. Belando MB et al 2019. Front. Mar. Sci. Conf The Mar Menor Oyster Initiative, a strategy to prevent algal blooms in a eutrophic lagoon in Spain Fig. 1. Map of study in Mar Menor, Murcia, SE Spain Marine ecosystems are exposed to a wide range of pressures including water quality degradation, habitat decline, overfishing and climate change, in flats, located in the south basin of the lagoon. The rationale of this project is to involve all interested stakeholders for successful large-scale restoration programs, which need public and political support, research, and outreach actions [13]. Acknowledgements Project RemediOS is developed with Multi-specific Harmful Algal Bloom in a Chilean Fjord: A dangerous phytoplankton cocktail Fig. 1. Maps of study area showing: left, NW Patagonian fjords; right, Quitralco Fjord Harmful Algal Blooms (HABs) in Southern Chile (Patagonian fjords) have followed the global trend of increasing reports an Fig. 3. Vertical distribution of A) temperature (blue line), salinity (red line) and chlorophyll a (green line); B) Pseudo-nitzschia spp; C) A. catenella; D) D. acuminata; E) P. reticulatum at a sampling station close to the head of Quitralco Fjord on February 22, 2022 reticulatum (18.3 x 103 cells Red Tide Adaptation and Response Network (REARMAR): bridging local, scientific and policy knowledge for smallscale benthic fisheries in the northern Chilean Patagonia Fig. 1. Expansion of Alexandrium catenella-related PSP outbreaks recorded in the last four decades in Chilean Patagonia. Dashed line l l fishermen leaders and fishery and health authorities were considered inappropriate. Several coordination problems arose when an authorized 6,000 loco landing could not be placed on the market because results of laboratory tests detecting toxins slightly above the regulatory limit (80 ug STX eq An unprecedented harmful algae bloom in the beaches of Rio, Brazil Fig. 1. Images acquired by Sentinel-3s Ocean and Land Colour Instrument OLCI, on A) November 16th, 2021; B) December 5th, 2021. The dark water patch indicates the algal bloom. Source: Priscila Kienteca Lange, UFRJ An extensive and Tetraselmis). We speculate that these calm inlets could have possibly been the source of the massive offshore bloom, but further image and data analysis needs to be conducted. The coast of Rio de Janeiro state is subject to coastal upwelling of the South Atlantic Central Water (SACW water mass) at A High Biomass Bloom of a dinoflagellate (Scrippsiella sp.) in a tropical estuary in northern Bahia State, Northeast Brazil A bloom of Scrippsiella sp. was observed in the Rio Real estuary of Northeast Brazil (Figure 1A; 11o 18 28 S; 37o 16 45 W). According to the KöppenGeiger climate classification [ Limnoraphis robusta bloom in Hanabanilla reservoir, central-southern Cuba Fig. 1. Map showing the areas where the Limnoraphis robusta bloom occurred in Hanabanilla reservoir. Harmful cyanobacterial blooms in freshwater ecosystems can form major water discolorations, threaten ecosystem functioning from Hanabanilla was mainly in early vegetative stage. In contrast, some morphological characters which are indicators of later growth stage such as red-brownish trichomes and hormogonia were present in high abundance in a previous L. robusta bloom from Hanabanilla reservoir [5]. L. robusta occurred MixONET, a new SCOR Working Group # 165 on Mixotrophy in the Ocean Traditional and contemporary methods in Biological Oceanography assume a false plant/animal dichotomy for plankton. This dichotomy has been the bedrock of marine science, operationally separating organisms into phototrophic or phagot Maldonado (Canada), Mengmeng Tong (China), Michaela Larsson (Australia), Patricio Diaz (Chile), Robinson Mugo (Kenya), Tina Šilović (France). The first meeting of the working group was held in silico (February 2022) with the second hybrid meeting scheduled to be held in Baiona (Galicia, Spain) in Ju GlobalHAB/EuroMarine Workshop on Modelling and Prediction of Harmful Algal Blooms The typical harmful algal bloom is a regional- or local-scale phenomenon, a perfect storm of environmental conditions, ocean transport and mixing patterns, and microbial ecology. Because of this complexity, prediction Meeting of the GlobalHAB Scientific Steering Committee, Glasgow, Scotland, May 2022 On May 14th -15th, 2022, the Scientific Steering Committee (SSC) of the IOCSCOR programme, GlobalHAB, celebrated its first hybrid meeting in Glasgow, UK, following virtual meetings throughout the Covid19 pandemic. Th The international community is invited to participate in the GlobalHAB programme, through seeking endorsement of relevant research, monitoring, and modelling activities GlobalHAB APPLICATION FORM FOR ENDORSEMENT OF ACTIVITIES AND PROJECTS To be completed in English and emailed to the Chair of the G Is the activity part of, coordinated with, or af4iliated with, other international/regional programs? Yes: ___ No. ____ If yes, give program title: 8. FUNDING Has funding been obtained? Yes: No: (Prospective) source(s): 9. CONTRIBUTION TO UN DECADE OF OCEAN SCIENCE FOR SUSTAINABLE DEVELOPMENT 203 Microbial life cycles Microbial life cycles in a changing ocean in a changing ocean Contributions that address the following topics are welcome: Contributions that address the following topics are welcome: Diversity of microbial life cycles in different habitats and environments Diversity of micr