Topography and biological noise determine acoustic detectability on coral reefs

Handle URI:
http://hdl.handle.net/10754/562911
Title:
Topography and biological noise determine acoustic detectability on coral reefs
Authors:
Cagua, Edgar F. ( 0000-0001-5867-3687 ) ; Berumen, Michael L. ( 0000-0003-2463-2742 ) ; Tyler, Elizabeth
Abstract:
Acoustic telemetry is an increasingly common tool for studying the movement patterns, behavior and site fidelity of marine organisms, but to accurately interpret acoustic data, the variability, periodicity and range of detectability between acoustic tags and receivers must be understood. The relative and interactive effects of topography with biological and environmental noise have not been quantified on coral reefs. We conduct two long-term range tests (1- and 4-month duration) on two different reef types in the central Red Sea to determine the relative effect of distance, depth, topography, time of day, wind, lunar phase, sea surface temperature and thermocline on detection probability. Detectability, as expected, declines with increasing distance between tags and receivers, and we find average detection ranges of 530 and 120 m, using V16 and V13 tags, respectively, but the topography of the reef can significantly modify this relationship, reducing the range by ~70 %, even when tags and receivers are in line-of-sight. Analyses that assume a relationship between distance and detections must therefore be used with care. Nighttime detection range was consistently reduced in both locations, and detections varied by lunar phase in the 4-month test, suggesting a strong influence of biological noise (reducing detection probability up to 30 %), notably more influential than other environmental noises, including wind-driven noise, which is normally considered important in open-water environments. Analysis of detections should be corrected in consideration of the diel patterns we find, and range tests or sentinel tags should be used for more than 1 month to quantify potential changes due to lunar phase. Some studies assume that the most usual factor limiting detection range is weather-related noise; this cannot be extrapolated to coral reefs. © 2013 Springer-Verlag Berlin Heidelberg.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program; Reef Ecology Lab
Publisher:
Springer Nature
Journal:
Coral Reefs
Issue Date:
19-Aug-2013
DOI:
10.1007/s00338-013-1069-2
Type:
Article
ISSN:
07224028
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Marine Science Program; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorCagua, Edgar F.en
dc.contributor.authorBerumen, Michael L.en
dc.contributor.authorTyler, Elizabethen
dc.date.accessioned2015-08-03T11:15:09Zen
dc.date.available2015-08-03T11:15:09Zen
dc.date.issued2013-08-19en
dc.identifier.issn07224028en
dc.identifier.doi10.1007/s00338-013-1069-2en
dc.identifier.urihttp://hdl.handle.net/10754/562911en
dc.description.abstractAcoustic telemetry is an increasingly common tool for studying the movement patterns, behavior and site fidelity of marine organisms, but to accurately interpret acoustic data, the variability, periodicity and range of detectability between acoustic tags and receivers must be understood. The relative and interactive effects of topography with biological and environmental noise have not been quantified on coral reefs. We conduct two long-term range tests (1- and 4-month duration) on two different reef types in the central Red Sea to determine the relative effect of distance, depth, topography, time of day, wind, lunar phase, sea surface temperature and thermocline on detection probability. Detectability, as expected, declines with increasing distance between tags and receivers, and we find average detection ranges of 530 and 120 m, using V16 and V13 tags, respectively, but the topography of the reef can significantly modify this relationship, reducing the range by ~70 %, even when tags and receivers are in line-of-sight. Analyses that assume a relationship between distance and detections must therefore be used with care. Nighttime detection range was consistently reduced in both locations, and detections varied by lunar phase in the 4-month test, suggesting a strong influence of biological noise (reducing detection probability up to 30 %), notably more influential than other environmental noises, including wind-driven noise, which is normally considered important in open-water environments. Analysis of detections should be corrected in consideration of the diel patterns we find, and range tests or sentinel tags should be used for more than 1 month to quantify potential changes due to lunar phase. Some studies assume that the most usual factor limiting detection range is weather-related noise; this cannot be extrapolated to coral reefs. © 2013 Springer-Verlag Berlin Heidelberg.en
dc.publisherSpringer Natureen
dc.subjectAcoustic transmittersen
dc.subjectDetection efficiencyen
dc.subjectPassive monitoringen
dc.subjectSaudi Arabiaen
dc.titleTopography and biological noise determine acoustic detectability on coral reefsen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentMarine Science Programen
dc.contributor.departmentReef Ecology Laben
dc.identifier.journalCoral Reefsen
dc.contributor.institutionBiology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, United Statesen
dc.contributor.institutionZoology Department, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, United Kingdomen
kaust.authorCagua, Edgar F.en
kaust.authorBerumen, Michael L.en
kaust.authorTyler, Elizabethen
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