Proceedings of the Fifth International Seaweed Symposium, Halifax, August 25–28, 1965

Contents

Foreword

List of Active Members

Special Lectures

Some Recent Studies in the Polysaccharides of Agarophytes

Localization and Structure of Alginate Gels

The Physiological Ecology of Some New Zealand Seaweeds

The Seaweed Industry of the Future

Original Communications

I. Biology

In Situ Studies of Spore Production and Dispersal in the Giant Kelp, Macrocystis

The Life Cycle of Acrochaetium Liagorae Borg

Distribution of Marine Algae in the Bay of Fundy, New Brunswick, Canada

Effect of Tannins Excreted from Phaeophyta on Planktonic Animal Survival in Tide Pools

Juvenile Stages in the Genus Porphyra

Preliminary Report in the Marine Vegetation of the Antarctic Peninsula

Winter Observations on Species of Porphyra from Halifax County, Nova Scotia

Algues De La Côte Atiantique Portuguaise

Observations in the Marine Algal Flora of Barbados

A Two-Stage Sampling Method of Estimating Seaweed Quantities

The Place of Seaweeds in A General Evolutionary Theory For Plants

Algal Colonization After Removal of Echinus

Ecological Relationships Between Giant Kelp and Sea Urchins in Southern California

in the Occurrence of Unilocular Sporangia in the Life-History of Scytosiphon Lomentaria

Connective Tissue Stimulation in Guinea Pigs by Polysaccharides Derived from Marine Algae

Correlated Light and Electron Microscope Studies of the Cell Walls of Fucus

Sublittoral Surveying For Commercial Seaweeds in Northumberland Strait

The Occurrence of Chitan, a ß-(l->4)-Linked 2-Acetamido-2-Deoxy-D-Glucan, in Diatoms

Apical Dominance in Fucus Vesiculosus

Development of Zoospores in Ralfsia-Like Thallus, With Special Reference to the Life Cycle of the Scytosiphonales

The Gametophyte of Padina in the Mediterranean

Persistent, Vertical-Migration Rhythms in Benthic Microflora. V. The Effect of Artificially Imposed Light and Dark Cycles

in the Species and Distribution of Gelidium in Japan

Antifouling in Sargassum Natans: Re-Recognition of Tannin Activity

Variation in the Genus Polysiphonia Greville

The Occurrence of Benthic Marine Algae Under Shore Fast-Ice in the Western Ross Sea, Antarctica

II. - Chemistry

Dimethyl-ß-Propriothetin: Determination by Reactor Gas-Liquid Chromatography Occurrence in Algae, and Implications in Fisheries

The Repeating Structure of Some Polysaccharide Sulphates from Red Seaweeds

The Evaluation of Some Red Marine Algae as a Source of Carrageenan

Aspects of Rhodophycean Photosynthesis

The Constitution of Laminarin

Structural Studies in the Water-Soluble Polysaccharide from the Green Seaweed Viva Lactuca. IV. Smith Degradation

A Study in the Constitution of Alginic Acid by Partial Acid Hydrolysis

A Novel Brominated Phenolic Derivative from Polysiphonia Lanosa

Tocopherol Determination in Seaweeds

Preparation and Structural Investigation of Ascophyllan

Physico-Chemical Studies on Chitan (Pure Crystalline ß-(l->4)-Linked 2-Acetamido-2-Deoxy-D-Glucan)

Studies in the Solubility of Alginic Acid from Ascophyllwn Nodosum at Low pH

The Location of the Sulphate Half-Ester Groups in Furcellaran and λ-Carrageenan

Agarose and Agaropectin in Gelidium and Gracilaria Agar

Polysaccharides from Corallina Officinalis

The Enzymatic Hydrolysis of λ-Carrageenan With λ-Carrageenase from Pseudomonas Carrageenovora

The Purification and Properties of An Agarase from A Marine Bacterium, Pseudomonas Atlantica

The Chemical Nature of the Insoluble Residue After Severe Extraction in Some Rhodophyceae and Phaeophyceae

III. - Applications

Some Properties of Seaweed Manures

Growth of Higher Plants in Response To Feeding With Seaweed Extracts

An Experimental Contribution To The Clinical Use of An Algal Phytocouoid (Algasol T331) in Oncology

Seaweeds As Radioactivity Indicators of Marine Environment

A Report on Alginic Acid As A Tablet Disintegrant

About The Milk Reactivity of Several Red Seaweed Extracts

The Use of Gelled Alginates For Controlling The Flow of Water in Porous Ground

Seaweed Meal As A Source of Minerals and Vitamins in Rations For Dairy Cows and Bacon Pigs

Suppression of Intestinal Absorption of Radiostrontium by Substances Occurring in Phaeophyceae

The Effect of Hydrolyzed Seaweed on Certain Plant Pests and Diseases

Author Index

Subject Index