Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris)
Abstract Background Studies of deep-diving beaked whales using Argos satellite-linked location-depth tags frequently return data with large gaps in the diving record. We document the steps taken to eliminate these data gaps and collect weeks of continuous time series data for a behavioral response s...
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| Format: | Article |
| Language: | English |
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BMC
2019-03-01
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| Series: | Animal Biotelemetry |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40317-019-0167-5 |
| _version_ | 1818776143694659584 |
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| author | Nicola J. Quick William R. Cioffi Jeanne Shearer Andrew J. Read |
| author_facet | Nicola J. Quick William R. Cioffi Jeanne Shearer Andrew J. Read |
| author_sort | Nicola J. Quick |
| collection | DOAJ |
| description | Abstract Background Studies of deep-diving beaked whales using Argos satellite-linked location-depth tags frequently return data with large gaps in the diving record. We document the steps taken to eliminate these data gaps and collect weeks of continuous time series data for a behavioral response study that took place in 2017. We used baseline data collected from 2014 to 2016 to analyze message diagnostics, and assess our current programming schedule using a multiple criteria decision making matrix (MCDM), as a robust way to develop a new sampling regime. Results The MCDM approach suggested animal behavior and the quantity of data collected were the main causes of gaps in our baseline tag records. We implemented a new sampling regime to sample only long-duration, presumed foraging dives, simultaneously increasing temporal coverage of each individual message and reducing the number of messages by 50%. The reduction of gaps increased the data available for continuous time series analysis from an average of just over 2 days and 13.5 sequential presumed foraging dives in our baseline tags to just over 19 days and 118 sequential presumed foraging dives in tags deployed during the 2017 behavioral response study. Conclusions We demonstrate that a critical approach, based on analysis of baseline data and question-driven weighted criteria, enabled the reduction and even elimination of gaps in the diving records of these tags. This approach enabled us to develop specific settings for our tags to ensure that our data collection was optimized for statistical analysis of the specific hypotheses we were testing. |
| first_indexed | 2024-12-18T11:08:15Z |
| format | Article |
| id | doaj.art-f1f02104881f4342a2523ce38ac90aef |
| institution | Directory Open Access Journal |
| issn | 2050-3385 |
| language | English |
| last_indexed | 2024-12-18T11:08:15Z |
| publishDate | 2019-03-01 |
| publisher | BMC |
| record_format | Article |
| series | Animal Biotelemetry |
| spelling | doaj.art-f1f02104881f4342a2523ce38ac90aef2022-12-21T21:10:04ZengBMCAnimal Biotelemetry2050-33852019-03-017111410.1186/s40317-019-0167-5Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris)Nicola J. Quick0William R. Cioffi1Jeanne Shearer2Andrew J. Read3Duke Marine Lab, Division of Marine Science and Conservation, Nicholas School of the EnvironmentUniversity Program in Ecology, Duke Marine LabUniversity Program in Ecology, Duke Marine LabDuke Marine Lab, Division of Marine Science and Conservation, Nicholas School of the EnvironmentAbstract Background Studies of deep-diving beaked whales using Argos satellite-linked location-depth tags frequently return data with large gaps in the diving record. We document the steps taken to eliminate these data gaps and collect weeks of continuous time series data for a behavioral response study that took place in 2017. We used baseline data collected from 2014 to 2016 to analyze message diagnostics, and assess our current programming schedule using a multiple criteria decision making matrix (MCDM), as a robust way to develop a new sampling regime. Results The MCDM approach suggested animal behavior and the quantity of data collected were the main causes of gaps in our baseline tag records. We implemented a new sampling regime to sample only long-duration, presumed foraging dives, simultaneously increasing temporal coverage of each individual message and reducing the number of messages by 50%. The reduction of gaps increased the data available for continuous time series analysis from an average of just over 2 days and 13.5 sequential presumed foraging dives in our baseline tags to just over 19 days and 118 sequential presumed foraging dives in tags deployed during the 2017 behavioral response study. Conclusions We demonstrate that a critical approach, based on analysis of baseline data and question-driven weighted criteria, enabled the reduction and even elimination of gaps in the diving records of these tags. This approach enabled us to develop specific settings for our tags to ensure that our data collection was optimized for statistical analysis of the specific hypotheses we were testing.http://link.springer.com/article/10.1186/s40317-019-0167-5Cuvier’s beaked whalesSatellite tagsArgosTime seriesData gapsBehavioral response study |
| spellingShingle | Nicola J. Quick William R. Cioffi Jeanne Shearer Andrew J. Read Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) Animal Biotelemetry Cuvier’s beaked whales Satellite tags Argos Time series Data gaps Behavioral response study |
| title | Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) |
| title_full | Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) |
| title_fullStr | Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) |
| title_full_unstemmed | Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) |
| title_short | Mind the gap—optimizing satellite tag settings for time series analysis of foraging dives in Cuvier’s beaked whales (Ziphius cavirostris) |
| title_sort | mind the gap optimizing satellite tag settings for time series analysis of foraging dives in cuvier s beaked whales ziphius cavirostris |
| topic | Cuvier’s beaked whales Satellite tags Argos Time series Data gaps Behavioral response study |
| url | http://link.springer.com/article/10.1186/s40317-019-0167-5 |
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