Data from: Overall dynamic body acceleration measures activity differently on large vs small aquatic animals ...
Acceleration-based proxies for activity and energy expenditure are widely used in bio-logging studies of animal movement and locomotion to explore biomechanical strategies, energetic costs of behaviour, habitat use and the impact of anthropogenic disturbance. The foremost such proxy is Overall Dynam...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2021
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.ns1rn8prc https://datadryad.org/stash/dataset/doi:10.5061/dryad.ns1rn8prc |
| Summary: | Acceleration-based proxies for activity and energy expenditure are widely used in bio-logging studies of animal movement and locomotion to explore biomechanical strategies, energetic costs of behaviour, habitat use and the impact of anthropogenic disturbance. The foremost such proxy is Overall Dynamic Body Acceleration (ODBA) along with variants VeDBA and PDBA. This technique, which involves summing the magnitude of high-pass-filtered acceleration signals (the so-called dynamic acceleration) over a reference interval, has been applied to animals as diverse as shags, lobsters, humans and whales. The relationship between ODBA and energy use has been tested empirically on animals small enough to house in laboratory facilities and arguments have been offered for why the method should be generally applicable, however validations on larger animals are scant. Here, we examine how body size impacts ODBA and its variants under steady locomotion in large aquatic animals, using cetaceans as model species. To do this, ... : Data was collected on 6 sperm whales (Physeter macrocephalus, Pm), 6 Blainville´s beaked whales (Mesoplodon densirostris, Md) and 6 harbour porposise (Phocoena phocoena, Pp) using suction cup attached multi-sensor tags (DTAGs version 2 and 3). Tags were attached to sperm whales between 2003-2010 in Norway, Italy, the U.S. North Atlantic, and the Azores, to Blainville's beaked whales between 2003-2010 off the coast of El Hierro (Canary Islands, Spain) and to harbour porpoises, which were bycaught in a pound net fishery in inner Danish waters between 2012-2014 and tagged upon release. The tags included a pressure sensor, triaxial magnetometers, and triaxial accelerometers sampled at 50-200 Hz with 16-bit resolution. These sensor streams were decimated to a common 25 Hz sampling rate in post processing. The triaxial accelerometer and magnetometer signals were rotated to correct for the orientation of the tag on the whale which was estimated at each surfacing from the stereotypical movements during respiration. ... |
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