Marine Mammals Passive Acoustic Talk

Eavesdropping on the ocean: using passive acoustic monitoring
technologies to estimate marine mammal population sizes

Please join us for a talk by Dr. Danielle Harris on Tuesday, December
6th at 11:30am in Ocean Teaching Building room 155. Dr. Harris is a
statistical ecologist and acoustician visiting from St. Andrews
University’s Centre for Research into Ecological and Environmental
Modelling (CREEM). This lecture is open to the public.

Abstract

Population size, or abundance, estimates of many marine mammal species
are traditionally produced using data collected from visual surveys.
However, acoustic datasets can also be used to estimate abundance, and
offer a number of advantages over visual survey methods. One
advantage is that there are many instruments already deployed
worldwide for a variety of purposes, including military and seismic
monitoring, which can also be used for marine mammal surveying. In
addition, more recently developed technologies, such as underwater
gliders and other autonomous ocean vehicles, are creating new
monitoring opportunities. In this seminar, I will give an overview of
how acoustic data can be used to estimate marine mammal abundance, and highlight some of the research challenges that arise from (a) using
opportunistic data from existing instrument deployments and (b) using
new technologies. The work presented here is part of two ongoing
research projects funded by the Office of Naval Research and involves
several datasets and study species. In particular, fin whale
(Balaenoptera physalus) monitoring using Comprehensive
Nuclear-Test-Ban Treaty hydrophones in the western Pacific Ocean and
using an ocean glider to monitor cetacean species in the Southern
Californian Bight will be discussed.

[Event Details]