Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand
Autonomous recorders are frequently utilised for examining vocal behaviour of animals, and are particularly effective in remote habitats. Southern right whales are known to have an extensive acoustic repertoire. A recorder was moored at the isolated sub-Antarctic Auckland Islands for a year to exami...
Main Authors: | , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
Zenodo
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.ps58g58 |
id |
ftzenodo:oai:zenodo.org:4985745 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:4985745 2024-09-15T17:43:43+00:00 Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand Webster, Trudi Van Parijs, Sofie Rayment, Will Dawson, Steve 2019-02-13 https://doi.org/10.5061/dryad.ps58g58 unknown Zenodo https://doi.org/10.1098/rsos.181487 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.ps58g58 oai:zenodo.org:4985745 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Acoustic behaviour Diel variation right whales vocalisations info:eu-repo/semantics/other 2019 ftzenodo https://doi.org/10.5061/dryad.ps58g5810.1098/rsos.181487 2024-07-27T02:48:46Z Autonomous recorders are frequently utilised for examining vocal behaviour of animals, and are particularly effective in remote habitats. Southern right whales are known to have an extensive acoustic repertoire. A recorder was moored at the isolated sub-Antarctic Auckland Islands for a year to examine whether the acoustic behaviour of southern right whales differed seasonally and throughout the day at their main calving ground in New Zealand. Recordings were made in each month except June, and vocalisations were audible in all months with recordings except January. A total of 35,487 calls were detected, of which upcalls were the most common (11,623). Call rate peaked in August (288±5.9 [SE] calls/hour) and July (194±8.3). Vocal behaviour varied diurnally with highest call rates detected at dusk and night, consistent with the concept that upcalls function primarily as contact calls. Zero-inflated model results confirmed that seasonal variation was the most important factor for explaining differences in vocal behaviour. An automated detector designed to expedite the analysis process for North Atlantic right whales correctly identified 80% of upcalls, although false detections were frequent, particularly when call rates were low. This study is the first to attempt year-round monitoring of southern right whale presence in New Zealand. Summary of the analysis of the southern right whale vocalisation data This spreadsheet contains data on the presence of right whale vocalisations for all of the recordings from the DSG recorder. Subsequent tabs in the spreadsheet contain the analysis of calls by season, month, per day, diel period and hour and call type DSGAnalysisSummary.xlsx Summary of the detector performance data This spreadsheet contains data on the performance of the automated detector (the eXtensible BioAcoustic Tool (XBAT) written in MATLAB) which was developed for upcall vocalisations produced by North Atlantic right whales. Manual and automated detections were compared to test the effectiveness and ... Other/Unknown Material Antarc* Antarctic Auckland Islands North Atlantic Southern Right Whale Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Acoustic behaviour Diel variation right whales vocalisations |
spellingShingle |
Acoustic behaviour Diel variation right whales vocalisations Webster, Trudi Van Parijs, Sofie Rayment, Will Dawson, Steve Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
topic_facet |
Acoustic behaviour Diel variation right whales vocalisations |
description |
Autonomous recorders are frequently utilised for examining vocal behaviour of animals, and are particularly effective in remote habitats. Southern right whales are known to have an extensive acoustic repertoire. A recorder was moored at the isolated sub-Antarctic Auckland Islands for a year to examine whether the acoustic behaviour of southern right whales differed seasonally and throughout the day at their main calving ground in New Zealand. Recordings were made in each month except June, and vocalisations were audible in all months with recordings except January. A total of 35,487 calls were detected, of which upcalls were the most common (11,623). Call rate peaked in August (288±5.9 [SE] calls/hour) and July (194±8.3). Vocal behaviour varied diurnally with highest call rates detected at dusk and night, consistent with the concept that upcalls function primarily as contact calls. Zero-inflated model results confirmed that seasonal variation was the most important factor for explaining differences in vocal behaviour. An automated detector designed to expedite the analysis process for North Atlantic right whales correctly identified 80% of upcalls, although false detections were frequent, particularly when call rates were low. This study is the first to attempt year-round monitoring of southern right whale presence in New Zealand. Summary of the analysis of the southern right whale vocalisation data This spreadsheet contains data on the presence of right whale vocalisations for all of the recordings from the DSG recorder. Subsequent tabs in the spreadsheet contain the analysis of calls by season, month, per day, diel period and hour and call type DSGAnalysisSummary.xlsx Summary of the detector performance data This spreadsheet contains data on the performance of the automated detector (the eXtensible BioAcoustic Tool (XBAT) written in MATLAB) which was developed for upcall vocalisations produced by North Atlantic right whales. Manual and automated detections were compared to test the effectiveness and ... |
format |
Other/Unknown Material |
author |
Webster, Trudi Van Parijs, Sofie Rayment, Will Dawson, Steve |
author_facet |
Webster, Trudi Van Parijs, Sofie Rayment, Will Dawson, Steve |
author_sort |
Webster, Trudi |
title |
Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
title_short |
Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
title_full |
Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
title_fullStr |
Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
title_full_unstemmed |
Data from: Temporal variation in the vocal behaviour of southern right whales in the Auckland Islands, New Zealand |
title_sort |
data from: temporal variation in the vocal behaviour of southern right whales in the auckland islands, new zealand |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.ps58g58 |
genre |
Antarc* Antarctic Auckland Islands North Atlantic Southern Right Whale |
genre_facet |
Antarc* Antarctic Auckland Islands North Atlantic Southern Right Whale |
op_relation |
https://doi.org/10.1098/rsos.181487 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.ps58g58 oai:zenodo.org:4985745 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.ps58g5810.1098/rsos.181487 |
_version_ |
1810490864796958720 |