Thirteenth International Seaweed Symposium

One: Plenary Lectures.- Seaweeds, then and now.- Seaweeds and biotechnology - inseparable companions.- Two: Minisymposia.- Population and community effects of seaweed harvesting.- An approach to determining the ecological effects of seaweed harvesting a summary.- Ecological impact of marine plant harvesting in the northwest Atlantic: a review.- The harvesting of macroalgae in New Zealand.- Ecological effects of seaweed harvesting in the Gulf of California and Pacific Ocean off Baja California and California.- Ecological effects of harvesting Lessonia (Laminariales, Phaeophyta) in central Chile.- Functional seaweed morphology and relation to seaweed productivity.- Productivity and nutrient relationships in psammophytic versus epilithic forms of Bryopsidales (Chlorophyta): comparisons based on a short-term physiological assay.- Form variation and productivity of an intertidal foliose Gigartina species (Rhodophyta) in relation to wave exposure.- A form-function analysis of photon capture for seaweeds.- Application of the functional-form model to the culture of seaweeds.- Advances in North Americanseaweed culture.- The use of Gracilaria tikvahiae (Gracilariales, Rhodophyta) as a model system to understand the nitrogen nutrition of cultured seaweeds.- Nori cultivation in North America: growth of the industry.- Antiviral carbohydrates from marine red algae.- Taxonomy of economically important seaweeds.- Restriction enzyme analysis of variation and taxonomy in the kelp genus Laminaria (Laminariales, Phaeophyta).- Recent approaches to the taxonomy of the Gracilariaceae (Gracilariales, Rhodophyta) and the Gracilaria verrucosa problem.- Taxonomy of phyllophoroid algae: the implications of life history.- New and old problems in the taxonomy of the Gelidiales (Rhodophyta).- Protoplast and tissue culture: application to the seaweed industry.- The effects of the physical characteristics of the culture medium on the development of red seaweeds in tissue culture.- Production of bioflavor by regeneration from protoplasts of Ulva pertusa (Ulvales, Chlorophyta).- Parasexual fusion products in green algae: Enteromorpha and Ulvaria (Ulvales, Chlorophyta).- Protoplast isolation and fusion in Porphyra (Bangiales, Rhodophyta).- Three: Contributed Papers and Posters.- Taxonomy.- Variation in nucler DNA base composition (mol% G + C) in three orders of marine green algae.- Diagnoses and key to the genera of the Gracilariaceae (Gracilariales, Rhodophyta).- An evaluation of species relationships in the Porphyra perforata complex (Bangiales, Rhodophyta) using starch gel electrophoresis.- Ecology.- Ecological aspects of Sargassum muticum (Fucales, Phaeophyta) in Baja California, Mexico: reproductive phenology and epiphytes.- A simulation model for an Iridaea splendens (Gigartinales, Rhodophyta) population in Vancouver, Canada.- Effects of acid wastes from titanium dioxide production on biomass and species richness of benthic algae.- Competitive interactions between Fucus spiralis L. and F. vesiculosus L. (Fucales, Phaeophyta).- Canopy characteristics of the brown alga Sargassum muticum (Fucales, Phaeophyta) in Lake Grevelingen, southwest Netherlands.- Viability and dissemination of spermatia of Gracilaria verrucosa (Gracilariales, Rhodophyta).- Growth and size distribution of some large brown algae in Ohori, east coast of Korea.- Abundance changes in Laminaria setchellii and Pterygophora californica (Laminariales, Phaeophyta) near the Diablo Canyon Power Plant.- Relation between size and age of holdfasts in Ecklonia stolonifera Okamura (Laminariales, Phaeophyta) in northern Honshu, Japan.- Relationship between cover of Chondrus crispus (Gigartinales, Rhodophyta) and Phymatolithon (Corallinales, Rhodophyta) on friable rock substrata.- Seasonal growth, density, reproductive phenology and agar quality of Gracilaria sordida (Gracilariales, Rhodophyta) at Mokomoko Inlet, New Zealand.- Annual growth rate of the calcareous red alga Lithothamnion corallioides (Corallinales, Rhodophyta) in the Bay of Brest, France.- Planktonic bloom of an introduced species of Polysiphonia (Ceramiales, Rhodophyta) along the coast of North Carolina, USA.- Settlement of seaweeds on coastal structures.- Resources.- Economically important seaweeds in Mar Piccolo, Taranto (southern Italy): a survey.- Current state of seaweed resources in Spain.- Utilized and potentially utilizable seaweeds on the Namibian coast: biogeography and accessibility.- European bioconversion projects and realizations for macroalgal biomass: Saint-Cast-Le-Guildo (France) experiment.- Resources and possibilities for exploitation of North Adriatic seaweeds.- Annual net primary production calculated from eastern Canadian Irish moss fishery data.- Saldanha Bay, South Africa: recovery of Gracilaria verrucosa (Gracilariales, Rhodophyta).- Seasonality of standing crop of a Sargassum (Fucales, Phaeophyta) bed in Bolinao, Pangasinan, Philippines.- Seaweeds of potential economic importance in Kenya: field survey and future prospects.- Cultivation, tissue culture and strain selection.- Cultivation of Gracilaria verrucosa (Gracilariales, Rhodophyta) Strain G-16 for agar.- Some effects of plant growth regulators on tissue cultures of the marine red alga Agardhiella subulata (Gigartinales, Rhodophyta).- Culture and growth of Lessonia trabeculata (Phaeophyta, Laminariales) juvenile sporophytes in La Herradura de Guayacan Bay, northern Chile.- A model of seaweed growth in an outdoor culture in Israel.- Callus formation in Ecklonia cava Kjellman (Laminariales, Phaeophyta).- Growth, photosynthesis and agar in wild-type strains of Gracilaria verrucosa and G. conferta (Gracilariales, Rhodophyta), as a strain selection experiment.- Isolation and genetic characterization of self-sterile mutants in a monoecious red alga Gelidium vagum (Gelidiales, Rhodophyta).- Estimation of the degree of self-fertilization in Porphyra yezoensis (Bangiales, Rhodophyta).- The mass culture of Dunaliella viridis (Volvocales, Chlorophyta) for oxygenated carotenoids : laboratory and pilot plant studies.- Digestion of seaweeds by the marine amoeba Trichosphaerium.- Evaluation of dye-based assay for mannuronan 5?-epimerase.- Field and culture studies of species of Gelidium (Gelidiales, Rhodophyta) from their northern limit of distribution in Europe.- Notes on the life histories of Boergesenia and Valonia (Siphonocladales, Chlorophyta).- Recent progress in the use of processed microalgae in aquaculture.- Cultivation of Macrocystis integrifolia (Laminariales, Phaeophyta) in southeastern Alaskan waters.- Conchospore production and seasonal occurrence of some Porphyra species (Bangiales, Rhodophyta) in Washington State.- The life cycle of Laminaria abyssalis (Laminariales, Phaeophyta) in culture.- Physiology.- Ammonium uptake by Chondrus crispus Stackhouse (Gigartinales, Rhodophyta) in culture.- Comparative photosynthetic studies of Ecklonia cava (Laminariales, Phaeophyta) bladelets with and without zoosporangial sori.- Physiological responses of Pterocladia and Gelidium (Gelidiales, Rhodophyta) from the Azores, Portugal.- Toxicity of sewage-contaminated sediment cores to Macrocystis pyrifera (Laminariales, Phaeophyta) gametophytes determined by digital image analysis.- Activities of Corallina (Corallinales) and other Rhodophyta polymers in the modulation of calcification.- Effect of ammonium on growth and carrageenan content in Kappaphycus alvarezii (Gigartinales, Rhodophyta).- Growth and reproductive responses of Laminaria longicruris (Laminariales, Phaeophyta) to nutrient enrichment.- Chemical composition.- Content of arachidonic and eicosapentaenoic acids in polar lipids from Gracilaria (Gracilariales, Rhodophyta).- The farmed Eucheuma species (Gigartinales, Rhodophyta) in Danajon Reef, Philippines: car-rageenan properties.- Determination of the composition of the fibrillar part of Gracilaria verrucosa (Gracilariales, Rhodophyta) cell wall in order to prepare protoplasts.- Influence of tissue source and growth rates on dry weight and carrageenan composition of Chondrus crispus (Gigartinales, Rhodophyta).- Preliminary approach to the characterization and seasonal variation of carrageenans from four Rhodophyceae on the Normandy coast (France).- Agars from Gelidium rex (Gelidiales, Rhodophyta).- Studies on the yield and gel strength of agar from Gracilaria domingensis Sonder ex Kuetzing (Gracilariales, Rhodophyta) following the addition of calcium.- The effect of a liquid seaweed extract from Ascophyllum nodosum (Fucales, Phaeophyta) on the two-spotted red spider mite Tetranychus urticae.- Some common properties of lectins from marine algae.- Characterization of an agar fraction extracted from Gracilaria dura (Gracilariales, Rhodophyta).- Sugar constituents of fucose-containing polysaccharides from various Japanese brown algae.- Antitumor activity of marine algae.- Chemical screening of Brazilian marine algae producing carrageenans.- Enzymatic degradation of alginate by marine fungi.- Ultrastructure of the cell wall of Gracilaria cf. verrucosa (Gracilariales, Rhodophyta): effects of steam explosion.- Chemical structure.- Contribution on the content and nature of the phycocolloid from Kallymenia reniformis (Cryptonemiales, Rhodophyta).- Infrared analysis of eleven carrageenophytes from Baja California, Mexico.- The xylogalactan sulfate from Chondria macrocarpa (Ceramiales, Rhodophyta).- Eicosanoids from the Rhodophyta: a new metabolism in the algae.- Use of solid and gel state 13C NMR spectroscopy for differentiation between agarophytes and carrageenophytes.- Sulfated galactans from the red seaweed Nothogenia fastigiata (Nemaliales, Rhodophyta).- Agaroids from New Zealand members of the Gracilariaceae (Gracilariales, Rhodophyta) - a novel dimethylated agar.- A study of the phycocolloids from Gelidium madagascariense and Eucheuma denticulatum (Rhodophyta) collected on the south coasts of Madagascar.- Molecular biology.- Control and heterologous expression in Escherichia coli of the Klebsiella pneumoniae gene encoding alginate lyase.- Taxonomic Index.- Author Index.