Dataset: Pyrosomes - Cam
Deployment: SR1810

Pyrosome counts from vertical video profiles, February - july 2018

View Data: For data, See Dataset Metadata Page: https://osprey.bco-dmo.org/dataset/866614

Principal Investigator:

Kelly Rakow Sutherland (University of Oregon)

Co-Principal Investigator:

Robert K. Cowen (Oregon State University, OSU-HMSC)

Su Sponaugle (Oregon State University, OSU)

Contact:

Joanna Lyle (University of Oregon, OIMB)

BCO-DMO Data Manager:

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

Project:

Collaborative Research: Mesozooplankton food webs in intermittent upwelling systems: An overlooked link in a productive ocean (MEZCAL)

Version:

Deployment Synonyms:

S18

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Description

These data were published in Lyle, J.T. et al. 2021

Methods & Sampling

Dataset acquisition description

We mounted a GoPro Hero 4 (4K, 30fps) in a deep-water housing (GoDeep Aluminum, Sexton Inc.) and two 7500 lumen lights (BigBlue VL7500P) to the ship’s onboard CTD rosette frame. At each station, simultaneous CTD and camera deployments captured fine-scale (1 m), in situ counts of pyrosomes to 100 m, or 5 m above the bottom at shallower stations. Camera frames were subsequently analyzed to determine pyrosome distributions with depth. For each meter of depth, we extracted a still frame from the camera and counted all pyrosome colonies. We adjusted this count by subtracting colonies that were visible in the still frame of the previous meter to avoid double-counts.

In situ videos were captured using a GoPro Hero 4 (4K, 30fps) in a deep-water housing (GoDeep Aluminum, Sexton Inc.) with two 7500 lumen lights (BigBlue VL7500P) mounted to the ship’s onboard CTD rosette frame. Video was aligned to depth information captured by the CTD (SBE 911).

Data Processing Description

Dataset Processing Description

Videos were processed using VirtualDub. Depth information was extracted from CTD files using SBE data processing (v.7.26.6).

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1737364	NSF Division of Ocean Sciences
OCE-1737399	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird 911

Supplied Name: CTD (SBE 911)

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird 911

Acronym: CTD SBE 911

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0035/

Generic Description:

The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). More information from Sea-Bird Electronics.

Underwater Camera

Supplied Name: GoPro Hero 4 (4K, 30fps)

Supplied Description:

Instrument Type

Generic Name: Underwater Camera

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/180/

Generic Description:

All types of photographic equipment that may be deployed underwater including stills, video, film and digital systems.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Cruise identification number: S=summer; W=winter; 18=2018	unitless	cruise_id
Location	Sampling location: NH=Newport, OR; TR=Trinidad Head, CA	unitless	sta_id
Station	Location along transect: 1=closest nearshore; 5=furthest offshore; D=day; N=night	unitless	sta_id
Transect	Sampling transect: Ma=first transect; Mb=second transect	unitless	transect
Date_Time_UTC	Date and time of the start of the net towing in UTC time zone	unitless	ISO_DateTime_UTC
Latitude	Latitude of deployment start location, north is positive	decimal degrees	lat
Longitude	Longitude of deployment start location, west is negative	decimal degrees	lon
Depth	Depth of sampling in meters. Depth bins start at the surface to 100 m.	meters	depth
Pyro_binned_count	Pyrosome counts from vertical video profiles in 1-m depth bins. Data may be missing near the surface due to visual disturbances, or at shallower stations where the bottom depth is < 100 m.	counts	count

Database

Contribute Data

Dataset: Pyrosomes - Cam
Deployment: SR1810

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Pyrosomes - CamDeployment: SR1810

Dataset acquisition description

Dataset Processing Description

Dataset: Pyrosomes - Cam
Deployment: SR1810