The Proceedings of the 19th International Seaweed Symposium provides an invaluable reference to a wide range of fields in applied phycology. Papers cover topics as diverse as the systematics, ecology, physiology, integrated multitrophic aquaculture, commercial applications, carbohydrate chemistry and applications, harvesting biology, cultivation of seaweeds and microalgae and more. Contributions from all parts of the world give the volume exceptional relevance in an increasingly global scientific and commercial climate. Like its predecessors, this volume provides a benchmark of progress in all fields of applied seaweed science and management, and will be referred to for many years to come.

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Advances in cultivation of Gelidiales.- Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery.- Cultivation of the green alga, Codium fragile (Suringar) Hariot, by artificial seed production in Korea.- Distribution and symptoms of epiphyte infection in major carrageenophyte-producing farms.- The occurrence of pinhole disease in relation to developmental stage in cultivated Undaria pinnatifida (Harvey) Suringar (Phaeophyta) in Korea.- The potential for seaweed resource development in subarctic Canada; Nunavik, Ungava Bay.- The characterization of color mutations in Bangiaceae (Bangiales, Rhodophyta).- Public health and carrageenan regulation: a review and analysis.- Effect of alkali treatment time and extraction time on agar from Gracilaria vermiculophylla.- Effects of extraction parameters on gel properties of carrageenan from Kappaphycus alvarezii (Rhodophyta).- Gel-forming structures and stages of red algal galactans of different sulfation levels.- Carrageenan of Eucheuma isiforme (Solieriaceae, Rhodophyta) from Nicaragua.- Some properties of alginate gels derived from algal sodium alginate.- Growth and carrageenan quality of Kappaphycus striatum var. sacol grown at different stocking densities, duration of culture and depth.- Purification and characterization of a N-acetylglucosaminidase produced by Talaromyces emersonii during growth on algal fucoidan.- Essential role of seaweed cultivation in integrated multi-trophic aquaculture farms for global expansion of mariculture: an analysis.- Opportunities and challenges for the development of an integrated seaweed-based aquaculture activity in Chile: determining the physiological capabilities of Macrocystis and Gracilaria as biofilters.- Integrated seaweed cultivation on an abalone farmin South Africa.- Determining the most appropriate feeding regime for the South African abalone Haliotis midae Linnaeus grown on kelp.- Palm oil mill effluent (POME) cultured marine microalgae as supplementary diet for rotifer culture.- Seaweed micropropagation techniques and their potentials: an overview.- Seaweed protoplasts: status, biotechnological perspectives and needs.- Preparation of protoplasts from Laminaria japonica using native and recombinant abalone alginate lyases.- Protoplast isolation and regeneration from Gracilaria changii (Gracilariales, Rhodophyta).- Callus induction and micropropagation improved by colchicine and phytoregulators in Kappaphycus alvarezii (Rhodophyta, Solieriaceae).- Bioactive volatile compounds from marine algae: feeding attractants.- Liquid seaweed extracts identified using 1H NMR profiles.- The use of HRMAS NMR spectroscopy to study the in vivo intracellular carbon/nitrogen ratio of Solieria chordalis (Rhodophyta).- Growth, pigments, UV-absorbing compounds and agar yield of the economic red seaweed Gracilaria lemaneiformis (Rhodophyta) grown at different depths in the coastal waters of the South China Sea.- Changes of growth characteristics and free amino acid content of cultivated Porphyra yezoensis Ueda (Bangiales Rhodophyta) blades with the progression of the number of harvests in a nori farm.- Environment determines nitrogen content and stable isotope composition in the sporophyte of Undaria pinnatifida (Harvey) Suringar.- Antioxidant activities of phlorotannins isolated from Japanese Laminariaceae.- Algicidal activity of polyunsaturated fatty acids derived from Ulva fasciata and U. pertusa (Ulvaceae, Chlorophyta) on phytoplankton.- Potential use of seaweeds in the laying hen ration to improve the quality of n-3 fatty acidenriched eggs.- Physiological differences in the growth of Sargassum horneri between the germling and adult stages.- Effects of temperature, photosynthetic photon flux density, photoperiod and O2 and CO2 concentrations on growth rates of the symbiotic dinoflagellate, Amphidinium sp..- Photosynthetic and respiratory responses of Gracilaria vermiculophylla (Ohmi) Papenfuss collected from Kumamoto, Shizuoka and Iwate, Japan.- In situ study of relative electron transport rates in the marine macroalga Fucus vesiculosus in the Baltic Sea at different depths and times of year.- Effects of photon flux density and agricultural fertilizers on the development of Sarcothalia crispata tetraspores (Rhodophyta, Gigartinales) from the Strait of Magellan, Chile.- Effects of kinetin and nitrogen on growth rates, pigment and protein contents in wild and phycoerythrin-deficient strains of Hypnea musciformis (Rhodophyta).- Rapid and slow modulation of nitrate reductase activity in the red macroalga Gracilaria chilensis (Gracilariales, Rhodophyta): influence of different nitrogen sources.- Molecular characterization of four genes involved in sulfur metabolism in Porphyra purpurea (Roth) C. Agardh.- Floating period of Sargassacean thalli estimated by the change in density.- Abundance of drifting seaweeds in eastern East China Sea.- Diversity, biomass and distribution pattern of Sargassum beds in the S...