A comparison of transect and species-time counts for assessing faunal abundance from video surveys

Photographic censures (film, video), conducted from underwater vehicles (manned submersible, ROV) use transect and quadrat methods to produce density estimates of organisms. Video records with altitude, pitch and roll problems that are not useful for density estimates can be enumerated using species-time techniques. The strip transect method is compared with two species-time census methods: rapid visual technique (RVT) and visual fast count (VFC)