Dataset: Soundscape monitoring acoustic data

Name: Soundscape monitoring acoustic data collected in July of 2017 during an in situ larval coral settlement experiment in St. John, US Virgin Islands
Published: 2018-07-27
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.742573.1

Spatial Extent: N:18.31789 E:-64.72218 S:18.30962 W:-64.76065

Temporal Extent: 2017-07-25 - 2017-07-27

Project:

Coral Chorus: The Role of Soundscapes in Coral Reef Larval Recruitment and Biodiversity (Coral Chorus)

Principal Investigator:

Amy Apprill (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

T. Aran Mooney (Woods Hole Oceanographic Institution, WHOI)

Scientist:

Ashlee Lillis (Woods Hole Oceanographic Institution, WHOI)

Contact:

Amy Apprill (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2018-07-27

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Soundscape monitoring acoustic data collected in July of 2017 during an in situ larval coral settlement experiment in St. John, US Virgin Islands

Abstract:

Matlab R2016 was used to process acoustic data from raw wave audio files. Mean power spectral densities were estimated (Hamming window, non-overlapping 0.5-sec windows, frequency resolution: 1.47 Hz) within 1-minute samples across the total experiment length (62 hours).

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2018-07-27	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.742573.1	2020-10-28

Description

This dataset contains audio files and mean power spectral densities (PSD). See the "Data Files" section to download files by site.

Methods & Sampling

SoundTrap (ST-300, Ocean Instruments NZ) acoustic recorders were deployed to continuously record at 48 kHz sampling frequency from 25-27 July, 2017. Recorders were positioned approximately 0.5 m above the seafloor.

Sites:
Tektite Reef (18.30962N, 64.72218W)
Cocoloba Reef (18.31528N, 64.76065W)
OffReef (18.31789N, 64.75059W) - A sand site with no reef structure within 100m

Soundscape and habitat characterization:
Acoustic recordings were analyzed to compare the experimental soundscapes, first by examining acoustic spectra (sound power as a function of frequency). Mean power spectral densities were estimated (Hamming window, non-overlapping 0.5-sec windows) within 1-minute samples across the total experiment length (62 hours). Root-mean-square (rms) sound pressure levels (SPL; dB re 1Pa) were calculated for each site in the 1-minute samples, within two frequency bands of interest. The lower analysis band (50-1000 Hz) contains the majority of fish-produced acoustic signals, as well as noise generated by wind and waves, while the higher analysis band (1000-20000 Hz) primarily represents the acoustic energy derived from invertebrate sounds (e.g., snapping shrimp). Because reef soundscapes exhibit diel variability, spectrograms were produced to further detect acoustic differences between sites.
Benthic cover and fish diversity and abundance at the sites were characterized during July 2017 using visual surveys as previously described (Kaplan et al. 2015). Benthic surveys included six 10m long, 1m wide transects, with benthic cover recorded every 10cm. For fish, three 30m-long, 2m-wide video transects were performed, with fish enumerated and identified. Fish abundances were calculated as the total number per transect, and fish species richness was the total number of species identified at each site.

Data Processing Description

Data Files

File
Cocoloba_PSD.zip (ZIP Archive (ZIP), 185.13 MB) MD5:d1262f13638f5ec42a69724baf3018a3 Mean power spectral densities (PSD). Processed data from acoustic recordings for site Cocoloba. The zip file includes three files: "_POavg.txt" - The acoustic data output for each site as a matrix of calculated mean acoustic power (units = µPa^2) within each frequency (rows) for each 1-minute sample (columns). “_datetime.txt" - A matrix of timestamps (UTC) for the acoustic samples in column format YYYY M DD HH mm ss. Rows correspond to the acoustic power matrix columns. "_freq.txt" - A vector of frequencies (Hz) corresponding to the acoustic power matrix rows.
Cocoloba_rawaudio.tar.gz (GZIP (.gz), 9.36 GB) MD5:f9346628b342f791401ce7a3744913d5 Raw audio (.*wav) files for site Cocoloba.
OffReef_PSD.zip (ZIP Archive (ZIP), 191.72 MB) MD5:1dba2f0baafd3731584e39a7bd78e3fc Mean power spectral densities (PSD). Processed data from acoustic recordings for site OffReef. The zip file includes three files: "_POavg.txt" - The acoustic data output for each site as a matrix of calculated mean acoustic power (units = µPa^2) within each frequency (rows) for each 1-minute sample (columns). “_datetime.txt" - A matrix of timestamps (UTC) for the acoustic samples in column format YYYY M DD HH mm ss. Rows correspond to the acoustic power matrix columns. "_freq.txt" - A vector of frequencies (Hz) corresponding to the acoustic power matrix rows.
OffReef_rawaudio.tar.gz (GZIP (.gz), 7.96 GB) MD5:be20e99ae91c0be5e1e0145560f7df5f Raw audio (.*wav) files for site OffReef.
Tektite_PSD.zip (ZIP Archive (ZIP), 197.19 MB) MD5:55d3b726b1a50b3747aa33f764c2dd46 Mean power spectral densities (PSD). Processed data from acoustic recordings for site Tektite. The zip file includes three files: "_POavg.txt" - The acoustic data output for each site as a matrix of calculated mean acoustic power (units = µPa^2) within each frequency (rows) for each 1-minute sample (columns). “_datetime.txt" - A matrix of timestamps (UTC) for the acoustic samples in column format YYYY M DD HH mm ss. Rows correspond to the acoustic power matrix columns. "_freq.txt" - A vector of frequencies (Hz) corresponding to the acoustic power matrix rows.
Tektite_rawaudio.tar.gz (GZIP (.gz), 8.77 GB) MD5:1755c8969c7ca7a877028fd3cdac88a9 Raw audio (.*wav) files for site Tektite.