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Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus)

Research output: Contribution to journalArticle

DOI

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Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus). / Roberts, B.L.; Read, A.J.

In: Marine Mammal Science, Vol. 31, No. 1, 01.2015, p. 169-190.

Research output: Contribution to journalArticle

Harvard

Roberts, BL & Read, AJ 2015, 'Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus)', Marine Mammal Science, vol. 31, no. 1, pp. 169-190. https://doi.org/10.1111/mms.12146

APA

Roberts, B. L., & Read, A. J. (2015). Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus). Marine Mammal Science, 31(1), 169-190. https://doi.org/10.1111/mms.12146

Vancouver

Roberts BL, Read AJ. Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus). Marine Mammal Science. 2015 Jan;31(1):169-190. https://doi.org/10.1111/mms.12146

Author

Roberts, B.L. ; Read, A.J. / Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus). In: Marine Mammal Science. 2015 ; Vol. 31, No. 1. pp. 169-190.

Bibtex - Download

@article{b13a38e42e394da7a207159bc494de6a,
title = "Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus)",
abstract = "We evaluated the performance of dolphin echolocation detectors (C-PODs) in the New River, North Carolina, by ground-truthing echolocation detections with digital acoustic recordings. We deployed C-PODs at three sites for a total of 204 monitoring hours. We also performed detection range trials at two sites where water depths ranged from 1.0 to 4.5 m. We used Detection Positive Minutes (DPMs), minutes of C-POD recordings that contained at least one echolocation click train, to indicate the presence of at least one dolphin. The C-PODs performed well in detecting dolphin click trains, although all units performed conservatively by failing to detect some echolocation events and therefore underestimated the true occurrence of dolphins. C-PODs reported only a small number of false detections, as indicated by low false positive rates ranging between 1{\%} and 4{\%} for individual units. Overall, C-PODs performed with a high accuracy (72{\%}-91{\%}) and detected echolocation at a distance of at least 933 m. We conclude that C-PODs hold considerable promise in future monitoring studies of this species, but recommend a careful study design especially in complex, coastal environments.",
keywords = "False positive, Passive acoustic monitoring, Bottlenose dolphin, Tursiops truncatus, C-POD, DMON, Echolocation, Detection",
author = "B.L. Roberts and A.J. Read",
year = "2015",
month = "1",
doi = "10.1111/mms.12146",
language = "English",
volume = "31",
pages = "169--190",
journal = "Marine Mammal Science",
issn = "0824-0469",
publisher = "John Wiley & Sons, Ltd (10.1111)",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Field assessment of C-POD performance in detecting echolocation click trains of bottlenose dolphins (Tursiops truncatus)

AU - Roberts, B.L.

AU - Read, A.J.

PY - 2015/1

Y1 - 2015/1

N2 - We evaluated the performance of dolphin echolocation detectors (C-PODs) in the New River, North Carolina, by ground-truthing echolocation detections with digital acoustic recordings. We deployed C-PODs at three sites for a total of 204 monitoring hours. We also performed detection range trials at two sites where water depths ranged from 1.0 to 4.5 m. We used Detection Positive Minutes (DPMs), minutes of C-POD recordings that contained at least one echolocation click train, to indicate the presence of at least one dolphin. The C-PODs performed well in detecting dolphin click trains, although all units performed conservatively by failing to detect some echolocation events and therefore underestimated the true occurrence of dolphins. C-PODs reported only a small number of false detections, as indicated by low false positive rates ranging between 1% and 4% for individual units. Overall, C-PODs performed with a high accuracy (72%-91%) and detected echolocation at a distance of at least 933 m. We conclude that C-PODs hold considerable promise in future monitoring studies of this species, but recommend a careful study design especially in complex, coastal environments.

AB - We evaluated the performance of dolphin echolocation detectors (C-PODs) in the New River, North Carolina, by ground-truthing echolocation detections with digital acoustic recordings. We deployed C-PODs at three sites for a total of 204 monitoring hours. We also performed detection range trials at two sites where water depths ranged from 1.0 to 4.5 m. We used Detection Positive Minutes (DPMs), minutes of C-POD recordings that contained at least one echolocation click train, to indicate the presence of at least one dolphin. The C-PODs performed well in detecting dolphin click trains, although all units performed conservatively by failing to detect some echolocation events and therefore underestimated the true occurrence of dolphins. C-PODs reported only a small number of false detections, as indicated by low false positive rates ranging between 1% and 4% for individual units. Overall, C-PODs performed with a high accuracy (72%-91%) and detected echolocation at a distance of at least 933 m. We conclude that C-PODs hold considerable promise in future monitoring studies of this species, but recommend a careful study design especially in complex, coastal environments.

KW - False positive

KW - Passive acoustic monitoring

KW - Bottlenose dolphin

KW - Tursiops truncatus

KW - C-POD

KW - DMON

KW - Echolocation

KW - Detection

U2 - 10.1111/mms.12146

DO - 10.1111/mms.12146

M3 - Article

VL - 31

SP - 169

EP - 190

JO - Marine Mammal Science

JF - Marine Mammal Science

SN - 0824-0469

IS - 1

ER -

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