sounds of the sound: underwater soundscapes of nc ......oyster toadfish (opsanus tau) snapping...
TRANSCRIPT
North Carolina State University College of Sciences Department of Marine, Earth, and Atmospheric Science Marine Ecology & Conservation Lab PI: Dr. David Eggleston
Sounds of the Sound: Underwater Soundscapes of NC Estuarine Habitats Shannon W. Ricci, Olivia Caretti, R. Patrick Lyon, David B. Eggleston, DelWayne R. Bohnenstiehl
What is a soundscape?
physical biological anthropogenic
A soundscape is the collection of physical, biological, and anthropogenic sources
sounds in an environment or area
Terrestrial soundscapes have been well studied; however we do not know what most
marine habitats sound like. Our marine soundscape research aims to answer:
1. Which animals are producing sound? 2. When & where are they producing sound? 3. Why are they producing sound?
These questions will inform our research goal:
Can soundscapes be used to assess habitat quality and biodiversity in marine systems?
Key Concepts & Research Questions
Current Research
Animals use and produce sound for a variety of reasons including communication, navigation, defense, mate-finding and more!
Figure 5B, Lillis et al 2014
Can animals use sound to find suitable habitat?
reef off-reef
Soundscapes are habitat specific Oyster larvae respond to reef-associated sounds
How do soundscapes change over time?
% o
f rec
ordi
ngs !
with
fish
cho
rusi
ng!
Low frequency, fish-associated sounds are loudest at night
Fish chorusing occurs predominately at night, and drives the nightly peak in the low frequency soundscape.
Date (M/DD/2014)!
What do different animals sound like?
Time (sec)
Fre
quency (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
Time (sec)
Fre
quency (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
Time (sec)
Fre
quency (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
A.
B.
C.
Time (sec)
Fre
quency (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
Time (sec)
Fre
qu
en
cy (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
Time (sec)
Fre
qu
ency (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
A.
B.
C.
Silver Perch (Bairdiella chrysoura)
Oyster toadfish (Opsanus tau)
Snapping shrimp (Alpheus sp.)
Time (sec)
Fre
qu
en
cy (
Hz)
0 5 10 15 20 25 30 35 400
1000
2000
3000
4000
5000
6000
7000
Visit our websites! https://cmast.ncsu.edu/eggleston
https://cmast.ncsu.edu/soundscapes
Follow us on Twitter! Eggleston Lab: @EgglestonLab
Shannon Ricci: @shannonwhitneyb Olivia Caretti:@OCaretti
Pat Lyon: @rpatlyon Dr. Del Bohnenstiehl: @drbohnen
PamlicoSound,NC
AbacoIsland,Bahamas
?
Habitat surveys with an unmanned
surface vehicle
Future Work
Sampling biological
communities
Collecting soundscape
information with hydrophones
Where to next?
Pamlico Sound, NC: Tracking development of soundscapes on new cultch oyster reefs Abaco, Bahamas: Coral reef soundscape characteristics
Can soundscapes be used to assess habitat quality and biodiversity in marine systems?
Methods 1. Combine habitat, biological, and soundscape data 2. Rigorously assess existing soundscape metrics
from terrestrial systems in marine systems.