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    Factors Affecting Detection Probability of Acoustic Tags in Coral Reefs

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    Name:
    EdgarFernandoCaguaBermudezThes ...
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    Type
    Thesis
    Authors
    Bermudez, Edgar F.
    Advisors
    Berumen, Michael L. cc
    Committee Members
    Kaartvedt, Stein cc
    Tyler, Elizabeth
    Program
    Marine Science
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2012-05
    Permanent link to this record
    http://hdl.handle.net/10754/273074
    
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    Abstract
    Acoustic telemetry is an important tool for studying the movement patterns, behaviour, and site fidelity of marine organisms; however, its application is challenged in coral reef environments where complex topography and intense environmental noise interferes with acoustic signals, and there has been less study. Therefore, it is particularly critical in coral reef telemetry studies to first conduct a long-term range test, a tool that provides informa- tion on the variability and periodicity of the transmitter detection range and the detection probability. A one-month range test of a coded telemetric system was conducted prior to a large-scale tagging project investigating the movement of approximately 400 fishes from 30 species on offshore coral reefs in the central Red Sea. During this range test we determined the effect of the following factors on transmitter detection efficiency: distance from receiver, time of day, depth, wind, current, moon-phase and temperature. The experiment showed that biological noise is likely to be responsible for a diel pattern of -on average- twice as many detections during the day as during the night. Biological noise appears to be the most important noise source in coral reefs overwhelming the effect of wind-driven noise, which is important in other studies. Detection probability is also heavily influenced by the location of the acoustic sensor within the reef structure. Understanding the effect of environmental factors on transmitter detection probability allowed us to design a more effective receiver array for the large-scale tagging study.
    DOI
    10.25781/KAUST-X9EE5
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-X9EE5
    Scopus Count
    Collections
    Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Theses

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