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

Len Thomas | Zendy; Armando M. JaramilloLegorreta | Zendy; Gustavo CárdenasHinojosa | Zendy; EdwyietoGarcia | Zendy; Lorenzo RojasBracho | Zendy; Jay M. Ver Hoef | Zendy; Jeffrey E. Moore | Zendy; Barbara L. Taylor | Zendy; Jay Barlow | Zendy; Nicholas Tregenza | Zendy

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

Author(s) -

Len Thomas,

Armando M. JaramilloLegorreta,

Gustavo CárdenasHinojosa,

EdwyietoGarcia,

Lorenzo RojasBracho,

Jay M. Ver Hoef,

Jeffrey E. Moore,

Barbara L. Taylor,

Jay Barlow,

Nicholas Tregenza

Publication year - 2017

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.5011673

Subject(s) - porpoise , critically endangered , human echolocation , endangered species , environmental science , population , interval (graph theory) , statistics , acoustics , computer science , medicine , mathematics , environmental health , physics , combinatorics , harbour , programming language

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.

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