Dataset: BATS zooplankton biomass
Deployment: BATS_cruises

BATS zooplankton biomass

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/881861

Principal Investigator:

Deborah K. Steinberg (Virginia Institute of Marine Science, VIMS)

Scientist:

Joseph Cope (Virginia Institute of Marine Science, VIMS)

Contact:

Joseph Cope (Virginia Institute of Marine Science, VIMS)

BCO-DMO Data Manager:

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

Project:

Bermuda Atlantic Time-series Study (BATS)

Version:

Deployment Synonyms:

Bermuda Atlantic Time-series Study cruises

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Description

Methods & Sampling

Dataset acquisition description

Sampling was conducted on ongoing monthly cruises, starting in April 1994, at the Bermuda Atlantic Time-series Study (BATS) site (31° 40' N 64° 10'W) in the Sargasso Sea. Mesozooplankton were collected with a rectangular frame (0.8 x 1.2 meters) net with 202 micrometer (µm) mesh. Two replicate double oblique tows through the euphotic zone at a ship speed of 1 nautical mile per hour (nm/h) were made during the day (between about 0900 and 1500 h) and night (between about 2000 and 0200 h) on each BATS cruise. The targeted maximum net depth was between 150 and 200 meters (m) and absolute depth was recorded with a temperature-depth recorder. The volume of water filtered by the net (m³) was measured with a General Oceanics flowmeter.

Samples from the tows were split immediately on board. One half-split was fractionated by wet sieving through nested sieves with mesh sizes of 5.0, 2.0, 1.0, 0.5, and 0.2 millimeters (mm), with individual fractions transferred to preweighed disks of 0.2 mm nitex netting and frozen for subsequent wet and dry weight (in milligrams) analyses.

Data Processing Description

Dataset Processing Description

BCO-DMO Processing
Dataset Version 1:
- Added 'Z' to end of date-time string to indicate time zone of UTC, as per ISO 8601 standard.

Dataset Version 2:
- Received new data file on 2023-06-06 (this version extends the dataset to December 2022; previous version ended in March 2022).
- Added 'Z' to end of date-time string to indicate time zone of UTC, as per ISO 8601 standard.

Dataset Version 3:
- Received new data file on 2023-12-21 (this version extends the dataset to June 2023; previous version ended in December 2022).
- Added 'Z' to end of date-time string to indicate time zone of UTC, as per ISO 8601 standard.
- Saved the final file as "881861_v3_bats_zooplankton_biomass.csv".

Dataset Version 4:
- Received new data file on 2024-06-17 (this version extends the dataset to December 2023; previous version ended in June 2023).
- Added 'Z' to end of date-time string to indicate time zone of UTC, as per ISO 8601 standard.
- Saved the final file as "881861_v4_bats_zooplankton_biomass.csv".

Dataset Version 5:
- Received new data file on 2024-12-20 (this version extends the dataset to June 2024; previous version ended in December 2023).
- Added 'Z' to end of date-time string to indicate time zone of UTC, as per ISO 8601 standard.
- Saved the final file as "881861_v5_bats_zooplankton_biomass.csv".

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1756105	NSF Division of Ocean Sciences

Instruments

Flow Meter

Supplied Name: General Oceanics flowmeter

Supplied Description:

Instrument Type

Generic Name: Flow Meter

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/388/

Generic Description:

General term for a sensor that quantifies the rate at which fluids (e.g. water or air) pass through sensor packages, instruments, or sampling devices. A flow meter may be mechanical, optical, electromagnetic, etc.

Plankton Net

Supplied Name: rectangular depressor plankton net with 202 µm mesh

Supplied Description:

This type of net was designed by Larry Madin and the company Sea Gear.

Instrument Type

Generic Name: Plankton Net

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/22/

Generic Description:

A Plankton Net is a generic term for a sampling net that is used to collect plankton. It is used only when detailed instrument documentation is not available.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruisetow_number	unique combination of cruise+tow numbers as xxxyzz, where xxx = Cruise Number, y = Bloom Number (cruise_type = 2 for bloom cruises), and zz = Tow number.	unitless	tow
cruise_number	BATS cruise number listed as a 5 digit ID. The first digit is cruise type: 1 = BATS core; 2 = BATS bloom A; 3 = BATS bloom B. Digits 2-5 are cruise number. e.g., 10218 = BATS 218.	unitless	cruise_id
cruise_type	type of cruise: 1 = BATS core; 2 = BATS bloom A; 3 = BATS bloom B.	unitless	cruise_type
R2R_cruise_ID	R2R cruise ID	unitless	cruise_id
tow_number	tow number	unitless	tow
ISO_datetime	date and time (UTC) of tow in ISO8601 format	unitless	ISO_DateTime_UTC
duration	duration of tow	minutes	duration
lat	latitude at start of tow (North = positive values; South = negative values)	decimal degrees	lat
lon	longitude at start of tow (East = positive values; West = negative values)	decimal degrees	lon
depth	maximum depth of tow	meters (m)	depth_max
vol_filt	volume of water filtered through the net	cubic meters (m^3)	vol_filt
wetwt_0200	zooplankton wet weight; 200 to 500 microns	milligrams (mg)	wet_weight_biomass
wetwt_0500	zooplankton wet weight; 500 to 1000 microns	milligrams (mg)	wet_weight_biomass
wetwt_1000	zooplankton wet weight; 1000 to 2000 microns	milligrams (mg)	wet_weight_biomass
wetwt_2000	zooplankton wet weight; 2000 to 5000 microns	milligrams (mg)	wet_weight_biomass
wetwt_5000	zooplankton wet weight; gt 5000 microns	milligrams (mg)	wet_weight_biomass
drywt_0200	zooplankton dry weight; 200 to 500 microns	milligrams (mg)	dry_weight_biomass
drywt_0500	zooplankton dry weight; 500 to 1000 microns	milligrams (mg)	dry_weight_biomass
drywt_1000	zooplankton dry weight; 1000 to 2000 microns	milligrams (mg)	dry_weight_biomass
drywt_2000	zooplankton dry weight; 2000 to 5000 microns	milligrams (mg)	dry_weight_biomass
drywt_5000	zooplankton dry weight; gt 5000 microns	milligrams (mg)	dry_weight_biomass

Database

Contribute Data

Dataset: BATS zooplankton biomass
Deployment: BATS_cruises

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: BATS zooplankton biomassDeployment: BATS_cruises

Dataset acquisition description

Dataset Processing Description

Dataset: BATS zooplankton biomass
Deployment: BATS_cruises