An integrated data collection system for line transect surveys

A computer based system for the collection of line transect survey data is described. The primary goals were to measure (rather than estimate) distances and angles wherever possible, provide accurate time-stamps surfacing events as an aid duplicate identification facilitate by using computers automate possible. Distance angle measurements made established photogrammetric techniques. Collection from video was automated included a buffering so that several seconds prior each observer sighting could be captured. An additional goal eliminate need post-cruise entry validation through use on-board software. successfully used during 2005 SCANS-II 2007 CODA surveys.