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It stands for AIMS Video Transect Analysis System. Video transects are systematically sampled identifying the benthos occurring at fixed points along the transect at the higher taxonomic level possible. The AVTAS software is used to analyze the video transects. During the analysis, the data is saved in a Microsoft Access¼ database. To eliminate the confusion in the analysis of data due to observer bias, transects on all sites are analysed by two observers. The observer interviewed actually reef in analyses of field transect a one site and then each transect alternatives. A second observer analysis the remainder of the transects.

00:47, 22 November 2012