You have entered the website of the Water and Environmental Research Institute of the Western Pacific (WERI) at the University of Guam. We are currently six faculty and five staff and our mission is to seek solutions through research, teaching and outreach programs, to issues and problems associated with the location, production, distribution and management of freshwater resources in Guam, the CNMI and the FSM.
The kinetics of ammonium uptake were examined for several species of Gracilaria from Micronesia. Ammonium uptake was dependent upon substrate concentration. The observed uptake kinetics were consistent with, and suggested, a diffusive ammonium uptake process. Rates of uptake were similar both during the day and the night and were not dependent on light. The rate of ammonium uptake was independent of the thalli nitrogen content. Rates of ammonium uptake were generally higher for Gracilaria edulis than for other species, a fact which may be related to thallus morphology.
