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Filtering by: Creator Torres, Leigh G. Date issued sim 2019-01

Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A.

Creator:

Holdman, Amanda K., Haxel, Joseph H., Klinck, Holger, and Torres, Leigh G.

Abstract:

Harbor porpoises (Phocoena phocoena) are commonly observed in Oregon's nearshore marine environment yet knowledge of their ecosystem use and behavior remains limited, generating concerns for potential impacts on this species from future coastal development. Passive acoustic monitoring was used to investigate spatial and temporal variations in the presence and foraging...

Resource Type:

Article
Estimating morphometric attributes of baleen whales with photogrammetry from small UASs: A case study with blue and gray whales

Creator:

Burnett, Jonathan D., Lemos, Leila, Barlow, Dawn, Wing, Michael G., Chandler, Todd, and Torres, Leigh G.

Abstract:

Small unmanned aircraft systems (sUASs) are fostering novel approaches to marine mammal research, including baleen whale photogrammetry, by providing new observational perspectives. We collected vertical images of 89 gray and 6 blue whales using low cost sUASs to examine the accuracy of image based morphometry. Moreover, measurements from 192 images...

Resource Type:

Article