Dataset: Squid tag movement data and environmental sampling

Name: Squid tag movement data and environmental sampling acquired in November 2021 and May 2023 near Faial and Pico Islands, Azores archipelago.
Published: 2024-04-15
Keywords: squid, movement, migration, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.924340.1

Spatial Extent: N:38.3003 E:-28.3522 S:38.3003 W:-28.3522

Near Faial and Pico Islands, Azores archipelago

Temporal Extent: 2022-11 - 2023-05

Project:

RAPID: Too hot to hold: Effects of unseasonable warming on the Azores nekton community and its keystone taxon (Too hot to hold)

Principal Investigator:

T. Aran Mooney (Woods Hole Oceanographic Institution, WHOI)

Student:

Seth Cones (Woods Hole Oceanographic Institution, WHOI)

Contact:

Seth Cones (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-04-15

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Squid tag movement data and environmental sampling acquired in November 2021 and May 2023 near Faial and Pico Islands, Azores archipelago.

Abstract:

ITAGs were used to measure squid movement dynamics. The sensor package was small (12.5 × 2.6 × 2.7 cm) and was affixed using surgical sutures . Additionally, ITAGs were neutrally buoyant, hydrodynamic, and focal tagged squid exhibited normal swimming and schooling behaviors with other conspecifics. ITAGs contain an inertial measurement unit (IMU) which measures acceleration, magnetic field strength, and angular velocity. These tags were used to measure the swimming behavior or free-ranging animals in the Azores region in November 2021, and May 2023. These data provide movement intensities, behaviors, and allow us to measure the environment including light, temperature, and the animal's depth. Here, we are submitting the tag data from the free-ranging animals in matrix form (.csv).

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2024-04-15	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.924340.1	2024-04-15

Methods & Sampling

Field deployments occurred in November 2021 and May 2023 near Faial and Pico Islands, Azores archipelago (38.3003° N, 28.3522°W). Data were collect during day boat trips (21 foot center console RIB) when winds were below 15 knots. Animals were caught at depths of around 250 meters, and were tagged by PI and Chief Scientist Aran Mooney.

Care was taken during capture and handling of animals to limit physical stress. Squid were caught by jigging, which is a minimally invasive means of capture since it reduces damage to the fragile epi- dermal layer. Once at the surface, animals were transferred to a padded table equipped with constant seawater flow to ventilate the gills. Only large squid with DMLs greater than 45 cm were selected for tagging. Squid eyes were covered during tagging to reduce light and visual stress. Tagged squid were immediately released over their capture site within 6−11 min.

The ITag contains a triaxial inertial measurement unit (IMU) with an accelerometer, gyroscope, and magnetometer sampled at 100 Hz (TDK Invensense MPU9250), and pressure, temperature (Keller 7LD), and light sensors (Intersil ISL29125) sampled at 1 Hz.

Data Processing Description

The data uploaded have not been post-processed, and have only been downloaded from MATLAB and transferred into .csv form.

BCO-DMO Processing

* Merged 4 individual (.movement.csv, environmental.csv) files into 1
* Added species, year, julian day and sensor id to dataset
* Added date in ISO format
* Adjusted parameter names to comply with database requirements

Data Files

File
924340_v1_squidtag.csv (Comma Separated Values (.csv), 3.72 GB) MD5:70a007d24f6761b7e8efd85c196fbe18 Primary data file for dataset ID 924340, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2203204

Deployments

None available yet

Instruments

tracking tag

Supplied Name: ITag

Supplied Description:

The ITag (12.5 × 2.6 × 2.7 cm) is a custom-built biologging tag designed for soft-bodied invertebrates. It contains a triaxial inertial measurement unit (IMU) with an accelerometer, gyroscope, and magnetometer sampled at 100 Hz (TDK Invensense MPU9250), and pressure, temperature (Keller 7LD), and light sensors (Intersil ISL29125) sampled at 1 Hz.

Instrument Type

Generic Name: tracking tag

Generic Description:

Devices attached to living organisms with the purpose of determining the location of those organisms as a function of time after tagging and release.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
species	veined squid (Loligo forbesii)	unitless	species
year	Year data were collected	unitless	year
julian_day	The Julian day the tag was deployed	unitless	julian_day
date	The day, month, year in which tag was deployed Format: %Y-%m-%d	unitless	date
latitude	latitude of sampling location, south is negative	decimal degrees	lat
longitude	longitude of sampling location, west is negative	decimal degrees	lon
sensor_id	Which ITAG version was used for the deployment	unitless	Sensor_Id
time_vector	Time stamp associated with data	unitless	time
surge_acceleration	acceleration along the x axis, which was align with squid long axis	gravities	acceleration
sway_acceleration	acceleration along the y axis, which was align with squid lateral axis	gravities	acceleration
heave_acceleration	acceleration along the z axis, which was align with squid dorsoventral axis	gravities	acceleration
x_magnetic_field_strength	magnetic field strength along x vector	microTesla	magn_field
y_magnetic_field_strength	magnetic field strength along y vector	microTesla	magn_field
z_magnetic_field_strength	magnetic field strength along z vector	microTesla	magn_field
x_angular_velocity	Rotation about the x axis	degress/sec	rotation
y_angular_velocity	Rotation about the y axis	degress/sec	rotation
z_angular_velocity	Rotation about the z axis	degress/sec	rotation
red_light	red wavelength light intensity	micro Watts per cm2	light_intensity
blue_light	blue wavelength light intensity	micro Watts per cm2	light_intensity
green_light	green wavelength light intensity	micro Watts per cm2	light_intensity
temperature	temperature of ambient water around animal	degrees Celsius (°C)	temperature
pressure	Pressure at the animals vertical position	millibar	press