Assessing the use of a camera system within an autonomous underwater vehicle for monitoring the distribution and density of sea scallops (Placopecten magellanicus) in the Mid-Atlantic Bight
| Author(s) | Walker, Justin H. | |
| Author(s) | Trembanis, Arthur C. | |
| Author(s) | Miller, Douglas C. | |
| Ordered Author | Justin H. Walker, Arthur C. Trembanis and Douglas C. Miller | |
| UD Author | Walker, Justin H. | en_US |
| UD Author | Trembanis, Arthur C. | en_US |
| UD Author | Miller, Douglas C. | en_US |
| Date Accessioned | 2016-10-12T13:59:35Z | |
| Date Available | 2016-10-12T13:59:35Z | |
| Copyright Date | Copyright © 2016 National Marine Fisheries Service | en_US |
| Publication Date | 2016-04-26 | |
| Description | Publisher's PDF | en_US |
| Abstract | The sea scallop (Placopecten magellanicus) fishery in the Atlantic is assessed during annual surveys by using both dredging and surface-deployed imaging techniques. In this pilot study in the Mid-Atlantic Bight, we used an autonomous underwater vehicle (AUV) to photograph the seafloor and to evaluate its use for determining scallop density and size. During 22 surveys in 2011, 257 km of seafloor were photographed, resulting in over 203,000 color images. Using trained annotators and photogrammetric software, we determined scallop density and shell heights for 15,252 scallops. The inshore scallop grounds near Long Island (at depths <40 m) had a density of 0.077 scallops per m2, whereas the inshore grounds of the New York Bight had a density of 0.012 scallops per m2. Shell heights derived from images were found to agree well with measurements from scallops collected with a commercial dredge. We show that images obtained with an AUV can be used to reliably estimate both density and shell height consistent with direct sampling from the same area. Moreover, side-scan sonar images obtained with an AUV can be used to detect dredge scars and, therefore, can provide a simultaneous, relative estimate of fishing effort in that area. AUVs provide a highly accurate suite of data for each survey site and therefore allow the design of experimental studies of fishing practices. | en_US |
| Department | University of Delaware. Department of Geological Sciences. | en_US |
| Department | University of Delaware. School of Marine Science and Policy. | en_US |
| Citation | Walker, Justin H., Arthur C. Trembanis, and Douglas C. Miller. "Assessing the use of a camera system within an autonomous underwater vehicle for monitoring the distribution and density of sea scallops (Placopecten magellanicus) in the Mid-Atlantic Bight." Fishery Bulletin 114.3 (2016): 261-274. | en_US |
| DOI | doi: 10.7755/FB.114.3.1 | en_US |
| ISSN | 0090-0656 | en_US |
| URL | http://udspace.udel.edu/handle/19716/19797 | |
| Language | en_US | en_US |
| Publisher | National Marine Fisheries Service. | en_US |
| dc.rights | This document is in the public domain. | en_US |
| dc.source | Fishery Bulletin | en_US |
| dc.source.uri | http://fishbull.noaa.gov/ | en_US |
| Title | Assessing the use of a camera system within an autonomous underwater vehicle for monitoring the distribution and density of sea scallops (Placopecten magellanicus) in the Mid-Atlantic Bight | en_US |
| Type | Article | en_US |
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