δ15N evidence for nitrogen fixation associated with macroalgae from a seagrass-mangrove-coral reef system

Early studies using acetylene reduction have vaux 1986) and are frequently covered by epiphytic suggested that macroalgae may contribute to nitrogen enrichblue-green algae such as Calothrjx sp, (Hi]lis-Colinment of waters near coral reefs via nitrogen fixation by their vaux 1980) that are capable of nitrogen fixation as indiepiphytic cyanophytes. Our objectives were to investigate the potential of stable nitrogen isotope analysis for detecting 0 Inter-Research 1998