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Investigating the Application of Mul...

Figueroa-Downing, Robert.

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Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs./
Author:	Figueroa-Downing, Robert.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	56 p.
Notes:	Source: Masters Abstracts International, Volume: 57-01.
Contained By:	Masters Abstracts International57-01(E).
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10263880
ISBN:	9780355371598

Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs.
Figueroa-Downing, Robert.

Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 56 p.

Source: Masters Abstracts International, Volume: 57-01.

Thesis (M.S.)--The University of Texas Rio Grande Valley, 2017.

Implementation of ROVs and multibeam imaging sonar in fisheries research has the potential to improve the accuracy and efficiency of current monitoring practices. This study aimed to 1) compare ROV video and diver abundance estimates; 2) evaluate fish length measurement accuracy from sonar; 3) investigate key differentiating sonar characteristics. Results indicate: 1) Diver surveys captured greater diversity of species; survey methods were comparable with regards to conspicuous species (r = 0.089, p = 0.074); 2) Length measurements from multibeam imaging sonar had high predictive power (Rho = 0.998; p < 0.001) of actual standard lengths and; 3) variations between samples were largely due to swim bladder echo, relative position of the target fish, and schooling characteristics. We conclude that 1) ROVs are less apt at observing cryptic species; 2) The Blueview P900-90 sonar can accurately measure fish length; and 3) swim bladder morphology plays an important role in fish identification.

ISBN: 9780355371598Subjects--Topical Terms:

677245
Environmental science.

Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs.
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100 1 $a Figueroa-Downing, Robert. $3 3346516
245 1 0 $a Investigating the Application of Multibeam Sonar and Remotely Operated Vehicles in Fish Population Monitoring on Artificial Reefs.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 56 p.
500 $a Source: Masters Abstracts International, Volume: 57-01.
500 $a Adviser: David W. Hicks.
502 $a Thesis (M.S.)--The University of Texas Rio Grande Valley, 2017.
520 $a Implementation of ROVs and multibeam imaging sonar in fisheries research has the potential to improve the accuracy and efficiency of current monitoring practices. This study aimed to 1) compare ROV video and diver abundance estimates; 2) evaluate fish length measurement accuracy from sonar; 3) investigate key differentiating sonar characteristics. Results indicate: 1) Diver surveys captured greater diversity of species; survey methods were comparable with regards to conspicuous species (r = 0.089, p = 0.074); 2) Length measurements from multibeam imaging sonar had high predictive power (Rho = 0.998; p < 0.001) of actual standard lengths and; 3) variations between samples were largely due to swim bladder echo, relative position of the target fish, and schooling characteristics. We conclude that 1) ROVs are less apt at observing cryptic species; 2) The Blueview P900-90 sonar can accurately measure fish length; and 3) swim bladder morphology plays an important role in fish identification.
590 $a School code: 1863.
650 4 $a Environmental science. $3 677245
650 4 $a Acoustics. $3 879105
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10263880