Summary of Abstract Submission

Abstract Submission No. IO50-09-0037PresentationOral


W. A. S. Chamika*1, M. F. M. Fairoz1, I. M. I. S. B. Gunathilake1, I. P. S. Chandrasiri1, M. B. M. Fayas1, E. M. Gunasekara1, D. E. Jayaneththi1, J. D. Liyanage1

1 Faculty of Fisheries & Marine Sc., Ocean University of Sri Lanka , Sri Lanka


Coral reefs are threatened by the number of natural and anthropogenic impacts. Increasing body of literature suggested that the coral mortality is due to various changes associated with water chemistry and microbial activity. A detail study was conducted from 12th of February 2014 to 31st of October 2014 to understand the present status of Paraviwella reef, Tangalle Sri Lanka (6 01 17.07 N, 80 48 01.21 E) with relation to water column microbes, reef fish, corals and algae. Monitoring data showed that substratum composition dominated by coral (64.7 18.9%) and algae (19.2 13.4%) where the reef fish community dominated by herbivores fish [herbivores (51.71.7%), carnivores (30.95.8%), planktivory (10.64%) and omnivores (6.86.4%)].Coral algae recruitment was dominated by fleshy algae and coral algae interaction also noted. Water quality parameters were also recorded within suitable range [Temperature=29 1C, Depth=54 17 cm, Salinity=34 1ppt, Turbidity=3 0.6 NTU, Dissolved Oxygen=8.6 1 ppm). Under this situation, planktonic microbial abundance was 4.5106 ml-1. In addition to that the microbial score (MSVibrio ) also determined by using Vibrio culturing techniques (MSVibrio= 0.99). However the recruitment of the algae is high, the ecological balance is controlled by herbivorous fish and therefore coral cover remain dominant and overall results indicated that the Paraviwella reef is a healthy reef (MSVibrio ~ 1). Continuous monitoring is undergoing to explain the mechanism of Paraviwella reef with advance bio-geochemical methods and microbial methods.