Dive characteristics of fin whales (Balaenoptera physalus) instrumented with time-depth recorders off the Azores

DOI

We report dive data collected from 21 fin whales (Balaenoptera physalus) instrumented with time-depth recorders (TDRs) off the Azores (38° N 28° W) between April and September, from 2007 to 2017. The TDRs recorded depth data at 1s sampling rate with a resolution of 0.5 m and precision of ±1%. Before analysis, data were truncated to remove periods before tag deployment and after the tag detached from the whale. TDR data were processed using the “diveMove” package in R (Luque, 2007). A zero offset correction was first applied to correct shifts in the surface baseline of depth recordings. A dive was defined as any submergence deeper than 15 m to exclude surface respiration activity. The dataset includes a total of 2594 dives performed by the 21 fin whales. A total of ten variables were calculated for each dive: maximum depth, dive duration, post-dive duration, descent and ascent rate, duration of bottom phase, mean and standard deviation of bottom depth, proportion of time spent at the bottom in relation to the dive duration, and depth range of the bottom phase.

Identifier
DOI https://doi.org/10.1594/PANGAEA.947349
Related Identifier https://doi.org/10.3389/fmars.2022.875731
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.947349
Provenance
Creator Silva, Mónica A (ORCID: 0000-0002-2683-309X); Fonseca, Catarina T ORCID logo; Pérez-Jorge, Sergi ORCID logo; Prieto, Rui ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference Fundação para a Ciência e Tecnologia https://doi.org/10.13039/501100001871 Crossref Funder ID IF/00943/2013/CP1199/CT0001 Movement ecology of whales: investigating environmental, social and physiological motivations; Fundação para a Ciência e Tecnologia https://doi.org/10.13039/501100001871 Crossref Funder ID M2.1.2/F/012/2011 MAPCET - Integrating cetaceans into marine spacial management in the Azores; Fundação para a Ciência e Tecnologia https://doi.org/10.13039/501100001871 Crossref Funder ID PTDC/MAR/74071/2006 TRACE - Cetacean habitat associations in oceanic systems: an integrated approach; Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 817806 https://doi.org/10.3030/817806 Sustainable management of mesopelagic resources
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 36316 data points
Discipline Earth System Research