Contents Committees of the International Gelidium Workshop Sponsors Opening addresses Foreword Taxonomy Intrageneric differences in cystocarp structure in Gelidium and Pterocladia by B. Santelices Seaweed resources Worldwide distribution of commercial resources of seaweeds including Gelidium by D. J. McHugh Ecology and management Production ecology of Gelidium by B. Santelices Biological criteria for the exploitation of the commercially important species of Gelidium in Spain by J. A. Juanes & A. Borja Gelidium pristoides in South Africa by R. J. Anderson, R. H. Simons, N. G. Jarman & G. J. Levitt Ecological-physiology Field studies and growth experiments on Gelidium latifolium from Asturias (northern Spain) by J. M. Rico Photosynthesis of Gelidium sesquipedale : effects of temperature and light on pigment concentration, C/N ratio and cell-wall polysaccharides by M. Torres, F. X. Niell & P. Algarra Physiological basis for the cultivation of the Gelidiaceae by B. A. Macler & J. R. Zupan Cultivation Gelidium cultivation in the sea by R. A. Melo, B. W. W. Harger & M. Neushul Spray system for re-attachment of Gelidium sesquipedale. (Clem.) Born. et Thur. (Gelidiales: Rhodophyta) by J. M. Salinas Artificial sporeling and field cultivation of Gelidium in China by X. G. Fei & L. J. Huang General principles of on-shore cultivation of seaweeds: effects of light on production by J. L. McLachlan viii Agars and utilization Chemical structure and physico-chemical properties of agar by M. Lahaye & C. Rochas Agars from Chilean Gelidiaceae by B. Matsuhiro & C. C. Urzuta Agar and agarose biotechnological applications by R. Amisén Biotechnology Genetic alleviation of the self-fertilization complication when hybridizing monoecious Gelidium vagum by J. P. van der Meer & M. U. Patwary Actual, potential and speculative applications of seaweed cellular biotechnology: some specific comments on Gelidium by G. Garcia-Reina, J. L. Gomez-Pinchetti, D. R. Robledo & P. Sosa PIII ao ocr 0 ed sine WN SEES Aver eK ok ae hee ckes pan eee ee 195