Note
In sea-grass meadows of Islas Los Roques, Venezuela, densities of turtle grass (Thalassia testudinum (König)) and the understory of calcareous green algae (Halimeda opuntia (Linnaeus)) were manipulated in nine experimental treatments and controls to examine the influence of both quantitative (biomass and total surface area) and qualitative (architectural) aspects of habitat complexity on crustacean assemblages. Small, motile epifaunal crustaceans quickly colonized manipulated habitats, with numbers of individuals and species becoming asymptotic within 5 days.