12th International Conference on Harmful Algae

INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 20063. Taxonomy – the species conceptRoom: will be announcedConvener: Jacob LarsenThe species concept in different groups of protists will be introduced by invitedspeakers. During the session, we would like to stimulate a discussion of the speciesconcept in the different groups of harmful algae: are cryptic species a commonphenomenon? How are species defined in the future, by DNA bar codes or? Isspecies distribution restricted only by temperature?Professor Tom Fenchel, University of Copenhagen, will give a generalintroduction to the species concept in protists while other speakers will talkspecifically about different groups of harmful algae, e.g. Karenia and Dinophysis.4. Toxicology of Toxin AnaloguesROOM: will be announcedConvener: Phillip Hess and John RamsdellThe potential or known toxicity of toxin analogues is an issue of complexity. Anumber of organizations (incl. the EU) are active in the Codex Alimentarius work toclarify guidelines for national regulatory measures for toxin analogues.The symposium will, after a few short introductory remarks, be an open discussionand exchange of new knowledge and viewpoints. We hope to obtain a state-of-theartof current knowledge on toxicity of analogues, to discuss the TEF concept, as wellas additivity and QSARs.This symposium should particularly attract chemists, pharmacologists andtoxicologists5. HABs and Clay Flocculation: Some Species, Some Places, but not a SilverBulletROOM: will be announcedModerators:Mario R. Sengco, Smithsonian Environmental Research CenterKevin G. Sellner, Chesapeake Research Consortium, Inc.For over a decade, natural clays have been used to control HABs in Japan, China,and South Korea, to minimize their impacts on aquaculture. Clays have also beenused in Australia to treat Microcystis blooms in rivers and streams, and to removephosphorus from the water column. In the U.S., clays have been shown to beeffective against a number of marine and brackish-water species, although moststudies have focused on Karenia brevis and its toxins in Florida waters. Otherstudies have also been conducted in Sweden, Hong Kong, and the Philippines.Despite the growing number of investigations into the use of clays to control HABs,there has been little effort to consolidate our current understanding about theeffectiveness of clays, the impacts of clay dispersal on water quality and the benthicenvironment, the cost of treatment, and the practical considerations of clay84