Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita

Len Thomas; Armando Jaramillo-legorreta; Gustavo Cardenas-Hinojosa; Edwyna Nieto-Garcia; Lorenzo Rojas-Bracho; Jay M. Ver Hoef; Jeffrey Moore; Barbara Taylor; Jay Barlow; Nicholas Tregenza

doi:10.1121/1.5011673

Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita

Len Thomas
, Armando Jaramillo-legorreta
, Gustavo Cardenas-Hinojosa
, Edwyna Nieto-Garcia
, Lorenzo Rojas-Bracho
, Jay M. Ver Hoef
, Jeffrey Moore
, Barbara Taylor
, Jay Barlow
, Nicholas Tregenza

Research output: Contribution to journal › Article › peer-review

Abstract

The vaquita is a critically endangered species of porpoise. It produces echolocation clicks, making it a good candidate for passive acoustic monitoring. A systematic grid of sensors has been deployed for 3 months annually since 2011; results from 2016 are reported here. Statistical models (to compensate for non-uniform data loss) show an overall decline in the acoustic detection rate between 2015 and 2016 of 49% (95% credible interval 82% decline to 8% increase), and total decline between 2011 and 2016 of over 90%. Assuming the acoustic detection rate is proportional to population size, approximately 30 vaquita (95% credible interval 8–96) remained in November 2016.

Original language	English
Pages (from-to)	EL512-EL517
Number of pages	6
Journal	Journal of the Acoustical Society of America
Volume	142
Issue number	5
Early online date	28 Nov 2017
DOIs	https://doi.org/10.1121/1.5011673
Publication status	Published - Nov 2017

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ThomasJASAEL2017
© 2017, Acoustical Society of America. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1121/1.5011673
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Thomas, L., Jaramillo-legorreta, A., Cardenas-Hinojosa, G., Nieto-Garcia, E., Rojas-Bracho, L., Ver Hoef, J. M., Moore, J., Taylor, B., Barlow, J., & Tregenza, N. (2017). Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita. Journal of the Acoustical Society of America, 142(5), EL512-EL517. https://doi.org/10.1121/1.5011673

@article{175e94c5b2044fadb68ead9fb0437f04,

title = "Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita",

abstract = "The vaquita is a critically endangered species of porpoise. It produces echolocation clicks, making it a good candidate for passive acoustic monitoring. A systematic grid of sensors has been deployed for 3 months annually since 2011; results from 2016 are reported here. Statistical models (to compensate for non-uniform data loss) show an overall decline in the acoustic detection rate between 2015 and 2016 of 49\% (95\% credible interval 82\% decline to 8\% increase), and total decline between 2011 and 2016 of over 90\%. Assuming the acoustic detection rate is proportional to population size, approximately 30 vaquita (95\% credible interval 8–96) remained in November 2016.",

author = "Len Thomas and Armando Jaramillo-legorreta and Gustavo Cardenas-Hinojosa and Edwyna Nieto-Garcia and Lorenzo Rojas-Bracho and \{Ver Hoef\}, \{Jay M.\} and Jeffrey Moore and Barbara Taylor and Jay Barlow and Nicholas Tregenza",

note = "Funding: the Mexican Government (through the Mexican Secretar{\'i}a de Medio Ambiente y Recursos Naturales), especially Minister R. Pacchiano and A. Michel; U.S. Marine Mammal Commission, in particular T. Ragen, R. Lent, and P. Thomas; the World Wildlife Fund (WWF) Mexico, in particular O. Vidal and E. Sanjurjo; Le Equipe Cousteau; The Ocean Foundation; Fonds de Dotation pour la Biodiversit{\'e}; MAAF Assurances (Save Your Logo); WWF-US; Opel Project Earth; Fideicomiso Fondo para la Biodiversidad; Instituto Nacional de Ecolog{\'i}a y Cambio Clim{\'a}tico; Comisi{\'o}n Nacional de {\'A}reas Naturales Protegidas; and Directorate of the Reserva de la Bi{\'o}sfera Alto Golfo de California y Delta del R{\'i}o Colorado.",

year = "2017",

month = nov,

doi = "10.1121/1.5011673",

language = "English",

volume = "142",

pages = "EL512--EL517",

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publisher = "Acoustical Society of America (ASA)",

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Thomas, L, Jaramillo-legorreta, A, Cardenas-Hinojosa, G, Nieto-Garcia, E, Rojas-Bracho, L, Ver Hoef, JM, Moore, J, Taylor, B, Barlow, J & Tregenza, N 2017, 'Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita', Journal of the Acoustical Society of America, vol. 142, no. 5, pp. EL512-EL517. https://doi.org/10.1121/1.5011673

TY - JOUR

T1 - Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita

AU - Thomas, Len

AU - Jaramillo-legorreta, Armando

AU - Cardenas-Hinojosa, Gustavo

AU - Nieto-Garcia, Edwyna

AU - Rojas-Bracho, Lorenzo

AU - Ver Hoef, Jay M.

AU - Moore, Jeffrey

AU - Taylor, Barbara

AU - Barlow, Jay

AU - Tregenza, Nicholas

N1 - Funding: the Mexican Government (through the Mexican Secretaría de Medio Ambiente y Recursos Naturales), especially Minister R. Pacchiano and A. Michel; U.S. Marine Mammal Commission, in particular T. Ragen, R. Lent, and P. Thomas; the World Wildlife Fund (WWF) Mexico, in particular O. Vidal and E. Sanjurjo; Le Equipe Cousteau; The Ocean Foundation; Fonds de Dotation pour la Biodiversité; MAAF Assurances (Save Your Logo); WWF-US; Opel Project Earth; Fideicomiso Fondo para la Biodiversidad; Instituto Nacional de Ecología y Cambio Climático; Comisión Nacional de Áreas Naturales Protegidas; and Directorate of the Reserva de la Biósfera Alto Golfo de California y Delta del Río Colorado.

PY - 2017/11

Y1 - 2017/11

N2 - The vaquita is a critically endangered species of porpoise. It produces echolocation clicks, making it a good candidate for passive acoustic monitoring. A systematic grid of sensors has been deployed for 3 months annually since 2011; results from 2016 are reported here. Statistical models (to compensate for non-uniform data loss) show an overall decline in the acoustic detection rate between 2015 and 2016 of 49% (95% credible interval 82% decline to 8% increase), and total decline between 2011 and 2016 of over 90%. Assuming the acoustic detection rate is proportional to population size, approximately 30 vaquita (95% credible interval 8–96) remained in November 2016.

AB - The vaquita is a critically endangered species of porpoise. It produces echolocation clicks, making it a good candidate for passive acoustic monitoring. A systematic grid of sensors has been deployed for 3 months annually since 2011; results from 2016 are reported here. Statistical models (to compensate for non-uniform data loss) show an overall decline in the acoustic detection rate between 2015 and 2016 of 49% (95% credible interval 82% decline to 8% increase), and total decline between 2011 and 2016 of over 90%. Assuming the acoustic detection rate is proportional to population size, approximately 30 vaquita (95% credible interval 8–96) remained in November 2016.

U2 - 10.1121/1.5011673

DO - 10.1121/1.5011673

M3 - Article

SN - 0001-4966

VL - 142

SP - EL512-EL517

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

IS - 5

ER -

Last call: Passive acoustic monitoring shows continued rapid decline of critically endangered vaquita

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