Estimating Florida manatee (Trichechus manatus latirostris) abundance using passive acoustic methods
Date
05/2022Metadata
Show full item recordAbstract
Manatees are difficult to detect, particularly cryptic populations that inhabit areas with limited water clarity. The effectiveness of using vocal detections to estimate manatee abundance was evaluated in a clear water spring where manatees congregate seasonally. Vocalizations were extracted by a detection classifier that clustered sounds with similar spectral properties. Vocalization counts from recordings in Blue Spring, FL, USA were strong predictors of manatee abundance. The link between independent visual counts and abundance estimates from passive acoustic monitoring was used to provide an estimate of 1.059 (95% confidence interval 0.963–1.127) vocalizations/manatee/5-min, which might be used elsewhere for cue counting of manatees.
Citation
Rycyk , A M , Berchem , C & Marques , T A 2022 , ' Estimating Florida manatee ( Trichechus manatus latirostris) abundance using passive acoustic methods ' , JASA Express Letters , vol. 2 , no. 5 , 051202 . https://doi.org/10.1121/10.0010495
Publication
JASA Express Letters
Status
Peer reviewed
ISSN
2691-1191Type
Journal article
Rights
Copyright © 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Description
T.A.M.’s contribution was conducted under the ACCURATE project, funded by the U.S. Navy Living Marine Resources program (Contract No. N3943019C2176) with partial support by CEAUL (funded by FCT— Fundação para a Ciência e a Tecnologia, Portugal, through the project UIDB/00006/2020).Collections
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