Research on and Culture of Calcareous Green Algae.
Final rept. 1 Mar 67-31 Dec 70,
OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
Pagination or Media Count:
Four genera of coral reef Siphonales, Halimeda, Penicillus, Rhipocephalus and Udotea were grown in laboratory aquaria under light intensities of 650, 200-375 and 125-200 ft-candles. The commercial preparation Instant Ocean was tested for use with plants. Penicillin and Lindane were tested for their effect on epiphytes and other nuisances. The growth and development of all 4 genera from tiny protuberances above the sand to white, dying and disintegrating was followed. All produced new individuals from rhizoidal-like filaments that extended outwards through the sand from the holdfast of an older plant. I demonstrated how vegetative reproduction might occur with partial burying of individuals by shifting sands in a reef, or from portions of plant broken off by grazing or other natural activities. Plants produced vegetatively are not initially epiphytized and so may be a source of clean plants for laboratory experiment. Insight into the role of calcareous plants in a reef was obtained by a productivity study which combined a census of such plants in a reef and a laboratory measure of oxygen changes in an entire aquarium. Author
- Anatomy and Physiology
- Biological Oceanography