. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. o 0. O 100 80- 60-. A DINOFLAGELLATE O DIATOM ? CYANOBACTERIA + CYSTS 40- 20" i ' i ' i ' i ' i ' l ' i ' i ' i ' i SMBSMBSMB S M B S M B S M B DEPTH Figure 13. Vertical distribution of dinoflagellates, diatom, cyanobacteria, and cysts of dinofiagellates expressed as relative percentage of total cells in detritus of six-days time series experiment. S, surface; M, midwater; B, bottom detritus. Vertical distribution and patterns of microalgae in floating detritus for day three are illustrated as one example
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. o 0. O 100 80- 60-. A DINOFLAGELLATE O DIATOM ? CYANOBACTERIA + CYSTS 40- 20" i ' i ' i ' i ' i ' l ' i ' i ' i ' i SMBSMBSMB S M B S M B S M B DEPTH Figure 13. Vertical distribution of dinoflagellates, diatom, cyanobacteria, and cysts of dinofiagellates expressed as relative percentage of total cells in detritus of six-days time series experiment. S, surface; M, midwater; B, bottom detritus. Vertical distribution and patterns of microalgae in floating detritus for day three are illustrated as one example in (Figure. 14 A). Cell numbers were the highest in surface and bottom of samples and lowest in mid-water with their numbers increasing with time. In bottom detritus samples cysts with a red body were present (Fig. 2), whereas in mid- water and surface detritus samples division cyst enclosed in hyaline membrane (Figs 4-5) were observed. During their journey in rising detritus, cysts became metabolically active and divided (Figs 2-4, 8). The freshly divided microalgae provide an abundant food source for meiofauna that follow. Composition of meiofauna in floating detritus is diverse. Dominant taxa include nematodes, ciliates, copepods and crustacean-larvae (Fig. 14 B). Meiofauna cell densities in detritus varied with depth and time. Most numerous taxa in surface and bottom detritus were nematodes, crustacean-larvae, and ciliates and copepods were more abundant in mid-waters. Usually meiofauna assemblages in mid-water detritus samples were Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washi
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