Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/6h440v14q

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • We describe the development and practical field testing of a rugged, unbaited video lander as a visual survey tool for fishes inhabiting structurally complex, high-relief, deepwater rocky reefs. Our autonomous, high-resolution, low-light, color video lander system utilized a smooth frame design that incorporated a series of breakaway attachments and inexpensive sacrificial steel bases to maximize the potential for camera system recovery from complex rocky habitats. Initial field tests at five reef complexes off Oregon (n = 421) and a larger study evaluating the western boundary of Oregon's Yelloweye Rockfish Conservation Area (YRCA, n = 527) showed that the video lander could be deployed and reliably retrieved from high-relief rocky habitat without damage to the camera system and with minimal losses of sacrificial bases. Acceptable visibility for counting fish from the lander video was common at offshore reefs like Stonewall Bank, but less so at nearshore reef complexes. The video lander system was effective for discriminating differences in fish species assemblages at the various reefs surveyed (one-way ANOSIM, P < 0.001) and for identifying seafloor habitat types and species-habitat associations for yelloweye rockfish (Sebastes ruberrimus) at Stonewall Bank (P < 0.05). The video lander data showed that the area outside and to the west of the YRCA enclosed similar quantities of yelloweye rockfish and their preferred habitats in comparison with the area inside the YRCA (0.179 yelloweye rockfish/station outside, versus 0.144 yelloweye rockfish/station inside, Wilcoxon test, P = 0.417). Our visual survey data also showed that the current western YRCA boundary is not optimal for protecting yelloweye rockfish at Stonewall Bank from fishery harvest. â[superscript°] An unbaited video lander was tested as a survey tool for deepwater rocky reefs. â[superscript°] The design used breakaway components to aid the retrieval of undamaged equipment. â[superscript°] Field tests showed high retrievability. â[superscript°] Differences in species assemblages, abundance and habitat associations were shown.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Hannah, R. W., & Blume, M. T. (2012, November). Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs. Journal of Experimental Marine Biology and Ecology, 430-431, 1-9. doi:10.1016/j.jembe.2012.06.021
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Sue Kunda (sue.kunda@oregonstate.edu) on 2012-08-20T23:05:11Z No. of bitstreams: 1 HannahRobertCEOASTestExperimentalUnbaited.pdf: 977682 bytes, checksum: 128ae44eb626702443d1d17ed94447ec (MD5)
  • description.provenance : Made available in DSpace on 2012-08-20T23:05:11Z (GMT). No. of bitstreams: 1 HannahRobertCEOASTestExperimentalUnbaited.pdf: 977682 bytes, checksum: 128ae44eb626702443d1d17ed94447ec (MD5) Previous issue date: 2012-10

Relationships

In Administrative Set:
Last modified: 07/25/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items