Accession Number : ADA616082


Title :   Effect of Broadband Nature of Marine Mammal Echolocation Clicks on Click-Based Population Density Estimates


Corporate Author : SAINT ANDREWS UNIV (UNITED KINGDOM)


Personal Author(s) : Thomas, Len ; Tyack, Peter


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a616082.pdf


Report Date : 30 Sep 2014


Pagination or Media Count : 5


Abstract : The long-term aim of the project is to support passive acoustic monitoring (PAM) of Odontecetes. This project aims to demonstrate how the detection process of broadband clicks can be modeled for different marine mammal species and assess the magnitude of error on the estimated density due to various commonly used simplifying assumptions. Our main purposes are to quantify the bias in the population density estimate for selected species and detector due to use of the narrow band approximation in the computed propagation loss, and to understand the factors affecting the magnitude of this bias to enable extrapolation to other species and detectors.


Descriptors :   *AQUATIC ANIMALS , BROADBAND , DETECTION , ECHO RANGING , MONITORING , POPULATION


Subject Categories : Biology


Distribution Statement : APPROVED FOR PUBLIC RELEASE