Dataset: jumbo squid time-at-depth
Deployment: Gilly_Squid_GOC3

Time-at-depth data (to generate histograms) from tagged jumbo squid.

Principal Investigator:

William Gilly (Stanford University)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Hypoxia and the ecology, behavior and physiology of jumbo squid, Dosidicus gigas (Jumbo Squid Physiology)

Physiological limits to vertical migrations of the pelagic, jumbo squid, Dosidicus gigas in the Gulf of California (Jumbo Squid Vertical Migration)

Current State:

Final no updates expected

Version:

26 Nov 2013

Version Date:

2013-11-26

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/472203/data

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Description

Humboldt squid (Dosidicus gigas) were tagged from 2004-2009 in the California Current System (CCS) and Gulf of California (GOC). Data include the amount of time spent per depth bin from each tagged squid. Daily histograms can be produced by adding up the counts per day for each depth bin. Each count in the count_night and count_day columns represents 75 seconds of time.

Methods & Sampling

Dataset acquisition description

All data were collected with Mk10-PAT tags (Wildlife Computers, Redmond, WA) attached to living Humboldt squid (Dosidicus gigas) as described elsewhere (Gilly et al. 2006). Tags were programmed to sample at 0.5 Hz or 1 Hz. Tags deployed in Monterey Bay (CCS-1through CCS-6; deployed during OCE-0850839) were programmed to transmit time series data (75 s intervals = 0.01333 Hz) for depth, temperature and light to the Argos satellite system. Tags deployed in the Gulf of California (GOC-1 through GOC-6; deployed during OCE-0526640) were physically recovered, and the data were subsampled to match the 75 s interval of the CCS tags. This procedure was also carried out for tag CCS-6 that was recovered but never reported to Argos.

Mk10 PAT tags measure depth from 0 to 2000 m with a resolution of 0.5 m and temperature from 0 to +40 degrees C with a resolution of 0.05 degree C. The tags were used as supplied by the manufacturer without additional calibration.

References:
Gilly, W.F., Zeidberg, L.D., Booth, J.A.T, Stewart, J.S., Marshall, G., Abernathy, K., and Bell, L.E. 2012. Locomotion and behavior of Humboldt squid, Dosidicus gigas, in relation to natural hypoxia in the Gulf of California, Mexico. The Journal of Experimental Biology, 215, 3175-3190. doi: 10.1242/jeb.072538.
Gilly, W.F., Markaida, U., Baxter, C.H., Block, B.A., Boustany, A., Zeidberg, L., Reisenbichler, K., Robinson, B., Bazzino, G., and Salinas, C. 2006. Vertical and horizontal migrations by the jumbo squid Dosidicus gigas revealed by electronic tagging. Marine Ecology Press Series, 324, 1-17. doi: 10.3354/meps324001.
Stewart, J.S., Field, J.C., Markaida, U., and Gilly, W.F. 2013. Behavioral ecology of jumbo squid (Dosidicus gigas) in relation to oxygen minimum zones. Deep Sea Research Part II: Topical Studies in Oceanography, 95, 197-208. doi: 10.1016/j.dsr2.2012.06.005.

Data Processing Description

Dataset Processing Description

Counts of presence in each 50 m depth bin were made from the 75 s time-series data using Matlab scripts. Each count represents a 75 s interval. Daytime and nighttime were defined by times of local sunrise and sunset (http://aa.usno.navy.mil/data/docs/RS_OneYear.php). Time-at-depth histograms were computed from these data and reported as counts (75 s intervals) in 50 m depth bins for individual day and night periods. Note: Day 1 of deployment and the final day are not 24 hour days, because tag activation and pop-off occurred at arbitrary times.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0526640	NSF Division of Ocean Sciences
OCE-0850839	NSF Division of Ocean Sciences
R/OPCFISH-06	California Sea Grant

Instruments

Wildlife Computers Mk10 Pop-up Archival Tag (PAT)

Supplied Name: MK10 PAT

Supplied Description:

Mk10-PAT tags (Wildlife Computers, Redmond, WA) were programmed to sample at 0.5 Hz or 1 Hz. Tags deployed in Monterey Bay (CCS-1through CCS-6) were programmed to transmit time series data (75 s intervals = 0.01333 Hz) to the Argos satellite system. Tags deployed in the Gulf of California (GOC-1 through GOC-6) were physically recovered. Mk10 PAT tags measure depth from 0 to 2000 m with a resolution of 0.5 m and temperature from 0 to +40 degrees C with a resolution of 0.05 degree C. The tags were used as supplied by the manufacturer without additional calibration.

Instrument Type

Generic Name: Wildlife Computers Mk10 Pop-up Archival Tag (PAT)

Acronym: MK10 PAT

Generic Description:

The Pop-up Archival Transmitting (Mk10-PAT) tag, manufactured by Wildlife Computers, is a combination of archival and Argos satellite technology. It is designed to track the large-scale movements and behavior of fish and other animals which do not spend enough time at the surface to allow the use of real-time Argos satellite tags. The PAT can be configured to transmit time-at-depth and time-at-temperature histograms, depth-temperature profiles, and/or light-level curves. The histogram duration (1 to 24 hours) and bin ranges can also be configured. PAT archives depth, temperature, and light-level data while being towed by the animal. At a user-specified date and time, the PAT actively corrodes the pin to which the tether is attached, thus releasing the PAT from the animal. The PAT then floats to the surface and transmits summarized information via the Argos system. Argos also uses the transmitted messages to provide the position of the tag at the time of release.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
squid_id	Unique squid identifier.	dimensionless	no_bcodmo_term
tag_id	Unique tag identifier.	dimensionless	tagid
descrip	Description of sampling location and time of year. CCS = California Current System; GOC = Gulf of California.	dimensionless	brief_desc
dorsal_mantle_len	Dorsal mantle length (DML).	centimeters (cm)	length
date_start	Year, month, and day when the tag was deployed on the squid in YYYYmmdd format.	unitless	date_begin
lat_start	Latitude at the time of deployment. Positive values = North.	decimal degrees	lat_start
lon_start	Longitude at the time of deployment. Negative values = West.	decimal degrees	lon_start
date_end	Year, month, and day when the tag detached from the squid in YYYYmmdd format.	unitless	date_end
lat_end	Latitude at the time the tag detached. Positive values = North.	decimal degrees	lat_end
lon_end	Longitude at the time the tag detached. Negative values = West.	decimal degrees	lon_end
sampling_time	Total number of sampling days.	number of days	time_elapsed
max_depth	Maximum depth achieved by squid.	meters (m)	depth_max
recovered	Indicates if the tag was physically recovered.	yes/no	no_bcodmo_term
deploy_day	Day of total tag deployment starting on Day 1.	dimensionless	no_bcodmo_term
depth_m	Depth.	meters (m)	depth
count_night	Number of counts spent in given temperature bin during nighttime (sunset to sunrise). Each count represents 75 seconds.	Number of counts (1 count = 75 seconds)	no_bcodmo_term
count_day	Number of counts spent in given temperature bin during daytime (sunrise to sunset). Each count represents 75 seconds.	Number of counts (1 count = 75 seconds)	no_bcodmo_term

Database

Contribute Data

Dataset: jumbo squid time-at-depth
Deployment: Gilly_Squid_GOC3

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: jumbo squid time-at-depthDeployment: Gilly_Squid_GOC3

Dataset acquisition description

Dataset Processing Description

Dataset: jumbo squid time-at-depth
Deployment: Gilly_Squid_GOC3