Citation:

PANGAEA.947349

Name: Dive characteristics of fin whales (Balaenoptera physalus) instrumented with time-depth recorders off the Azores
Published: 2022-08-22
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Balaenoptera physalus; dive; dive depth; dive duration; Field observation; fin whale; time-depth recorders

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Abstract:

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.

Keyword(s):

Balaenoptera physalus; dive; dive depth; dive duration; Field observation; fin whale; time-depth recorders

Supplement to:

Fonseca, Catarina T; Pérez-Jorge, Sergi; Prieto, Rui; Oliveira, Cláudia; Tobeña, Marta; Scheffer, Annette; Silva, Mónica A (2022): Dive Behavior and Activity Patterns of Fin Whales in a Migratory Habitat. Frontiers in Marine Science, 9, 875731, https://doi.org/10.3389/fmars.2022.875731

Further details:

Luque, Sebastián P (2007): Diving Behaviour Analysis in R. R News, 7/3, 8-14

Project(s):

Sustainable Management of Mesopelagic Resources (SUMMER)

Funding:

Fundação para a Ciência e Tecnologia (FCT), grant/award no. IF/00943/2013/CP1199/CT0001: Movement ecology of whales: investigating environmental, social and physiological motivations

Fundação para a Ciência e Tecnologia (FCT), grant/award no. M2.1.2/F/012/2011: MAPCET - Integrating cetaceans into marine spacial management in the Azores

Fundação para a Ciência e Tecnologia (FCT), grant/award no. PTDC/MAR/74071/2006: TRACE - Cetacean habitat associations in oceanic systems: an integrated approach

Horizon 2020 (H2020), grant/award no. 817806 : Sustainable management of mesopelagic resources

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species, unique identification	Species UID		Silva, Mónica A	Visual identification (VID)
2	Species, unique identification (URI)	Species UID (URI)		Silva, Mónica A	Visual identification (VID)
3	Species, unique identification (Semantic URI)	Species UID (Semantic URI)		Silva, Mónica A	Visual identification (VID)
4	Dive number	Dive no		Silva, Mónica A
5	Specimen identification	Spec ID		Silva, Mónica A
6	Time of day	Time of day		Silva, Mónica A
7	Dive, maximum depth	DMD	m	Silva, Mónica A	Calculated
8	Dive, duration	DDU	s	Silva, Mónica A	Calculated
9	Dive, time post-dive	DTPD	s	Silva, Mónica A	Calculated
10	Dive, velocity, descent	Dive v descent	m/s	Silva, Mónica A	Calculated
11	Dive, velocity, ascent	Dive v ascent	m/s	Silva, Mónica A	Calculated
12	Dive, time at bottom, absolute	DTABA	s	Silva, Mónica A	Calculated
13	Dive/swim depth	Dive depth	m	Silva, Mónica A	Calculated	mean, at bottom
14	Dive depth, standard deviation	D std dev	±	Silva, Mónica A	Calculated
15	Dive/swim depth	Dive depth	m	Silva, Mónica A	Calculated	range, at bottom
16	Dive, time at bottom, relative	DTABR	%	Silva, Mónica A	Calculated

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

36316 data points

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