A comparison of video and point intercept transect methods for monitoring subtropical coral communities

摘要: Abstract This study evaluated the use of video transects obtained from SCUBA divers or remote operated vehicle (ROV) and point intercept transect (PIT) method for monitoring subtropical coral communities. Comparisons were made between datasets by ROV diver (‘Diver’) PIT on three nearby sites with different hydrographies, scleractinian composition, dominant species percentage cover. There was no significant difference ‘Diver’ whereas tended to over-estimate cover at where corals are not extensive. Power analysis showed that minimum detectable change in cover, δ, had low mean values 0.39% 1.65% dataset, 0.66% “Diver’ 12.11% dataset. implied survey methods can produce higher precision terms detecting temporal changes communities thus more suitable scientific research management purposes than method. Other advantages using include provision permanent records subsequent studies public information, less field time incurred wider areas.