Distribution of algae on tropical rocky shores: Spatial and temporal patterns of non-coralline encrusting algae in Hong Kong

摘要: Encrusting algae have been described as dominant space occupying species on rocky shores around the world. Despite their abundance, however, most studies classify under generic names (e.g. Ralfsia sp.) or a functional group encrusting algae), thereby underestimating number of present and ecological importance. Studies six varying exposure, in Hong Kong, recorded eight common algae. The greatest abundance was intermediate where four distinct zonation bands could be identified; cyanobacterial “Kyrtuthrix-Zone” upper midlittoral, “Bare-Zone” below this, “Mixed-Zone” lower midlittoral “Coralline-Zone” infralittoral fringe. Abundance declined greater exposure to wave action, bivalves barnacles were competitively dominant. Certain found exposed Dermocarpa sp. Hildenbrandia occidentalis), while others preferred more sheltered prototypus Kyrtuthrix maculans). With exception some crusts, always towards low shore, an area decreased physical stress increased herbivore density. Zonation patterns showed seasonal variation associated with monsoonal climate Kong. Most during cool season, summer months cover vertical extent relation temperatures, although K. maculans summer. On Kong shores, high richness exhibit within-functional spatial temporal which is mediated by herbivory seasonal, stresses.