EELGRASS MAPPING IN PUGET SOUND, WASHINGTON USING HYPERSPECTRAL IMAGINGAND UNDERWATER VIDEO

摘要

Until the recent advent of high-resolution remote sensing, it has been difficult to delineateand map eelgrass (Zostera marina L.) habitat such that habitat structure can be assessedat multiple spatial scales. This project provided a comprehensive intertidal-subtidalcharacterization of the eelgrass habitat in the vicinity of the Hood Canal Floating Bridge,in Washington state using a combination of digital imagery from an airbornehyperspectral sensor and underwater videography. Subtidal underwater video data wascollected ～500 m north and south of the bridge, with ～14,000 observations recorded. Wealso used the Compact Airborne Spectrographic Imager (CASI) to collect 19-bandimagery along two flightlines of Hood Canal intertidal and shallow subtidal shoreline ～1km north and south of the eastern terminus of the Bridge. This mosaic of intertidalsubtidalhabitat is, to our knowledge, one of the first integrated mapping efforts usingunderwater video and hyperspectral imaging.