Dataset: Size fractionated zooplankton, C:N, d13C, and d15N from JC214
Deployment: JC214

Size fractionated zooplankton, C:N, d13C, and d15N from JC214

Principal Investigator:

Brian N. Popp (University of Hawaii at Manoa, SOEST)

Co-Principal Investigator:

Hilary G. Close (University of Miami Rosenstiel School of Marine and Atmospheric Science, UM-RSMAS)

Student:

Connor H. Shea (University of Hawaii at Manoa, SOEST)

BCO-DMO Data Manager:

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

Project:

Collaborative Research: Isotopic Indicators for Mechanisms of Organic Matter Degradation under High Productivity and High Carbon Flux Conditions (EXPORTS) (EXPORTS OM Degradation Indicators)

Deployment Synonyms:

EXPORTS

Data URL:

https://www.bco-dmo.org/dataset-deployment/880462/data

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Description

Methods & Sampling

Dataset acquisition description

Sampling was conducted during RRS James Cook cruise JC214 from May 1 to June 1, 2021 in the North Atlantic. Zooplankton were collected using a multiple opening-closing net and environmental sensing system (MOCNESS). Onboard, zooplankton were wet-sieved in filtered seawater using 0.2, 0.5, 1.0, 2.0 and 5.0 mm mesh sieves into different size fractions and frozen at -20º C. Zooplankton were dried and each fraction ground using a mortar and pestle. Samples were weighed into tin capsules and isotope ratios were determined using a Costech elemental combustion system coupled to an isotope ratio mass spectrometer through a Conflo-IV interface. For details please see Hannides et al. (2013).

Data Processing Description

Dataset Processing Description

BCO-DMO Processing:
- converted all dates to YYYY-MM-DD format;
- added the ISO8601 (UTC) date-time field;
- renamed fields to comply with BCO-DMO naming conventions.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-2124416	NSF Division of Ocean Sciences
OCE-2124415	NSF Division of Ocean Sciences

Instruments

Costech International Elemental Combustion System (ECS) 4010

Supplied Name: Costech Model 4010 elemental combustion system

Supplied Description:

Instrument Type

Generic Name: Costech International Elemental Combustion System (ECS) 4010

Acronym: Costech ECS 4010

Generic Description:

The ECS 4010 Nitrogen / Protein Analyzer is an elemental combustion analyser for CHNSO elemental analysis and Nitrogen / Protein determination. The GC oven and separation column have a temperature range of 30-110 degC, with control of +/- 0.1 degC.

Isotope-ratio Mass Spectrometer

Supplied Name: Thermo-Finnigan Delta Plus XP isotope ratio mass spectrometer with Conflo IV interface

Supplied Description:

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

MOCNESS

Supplied Description:

Multiple opening-closing net and environmental sensing system (MOCNESS) net with 1 m2 opening using 0.2 mm mesh plankton nets (see Wiebe et al., 1976)

Instrument Type

Generic Name: MOCNESS

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974).(from MOCNESS manual) This designation is used when the specific type of MOCNESS (number and size of nets) was not specified by the contributing investigator.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
VolFilt	Volume of water that passed through net opening	cubic meters (m^3)	volume
Longitude	Longitude	degrees East	lon
Latitude	Latitude	degrees North	lat
DepthInterval_max	Depth of net opening	meters (m)	depth
DepthInterval_min	Depth of net closing	meters (m)	depth
N	Mass of nitrogen contained in samples	micrograms (ug)	net
C	Mass of carbon contained in sample	micrograms (ug)	C
SizeFraction_min	Size fraction minimum	micrometers (um)	filter_size
SizeFraction_max	Size fraction maximum	micrometers (um)	filter_size
SampleWeight	Mass of sample put through EA	milligrams (mg)	mass
C_N_ratio	Molar ratio of carbon to nitrogen in sample	mol/mol	C_to_N
DayNight	Indicates if sampling was conducted in day or night	unitless	time_of_day
MOCNESS_Net	MOCNESS net number	unitless	net
Cruise	Cruise ID number	unitless	cruise_id
R2R_Event	Event number	unitless	event
ISO_DateTime_UTC	Date and time (UTC) in ISO8601 format: YYYY-MM-DDThh:mmZ	unitless	ISO_DateTime_UTC
Date	Date (UTC) in format YYYY-MM-DD	unitless	date
Time	Time (UTC) in format hh:mm	unitless	time
MOCNESS_Tow	MOCNESS tow number	unitless	tow
d15N	Isotopic composition of nitrogen in sample relative to AIR	‰, vs AIR	d15N
d13C	Isotopic composition of carbon in sample relative to V-PDB	‰, vs VPDB	d13C

Database

Contribute Data

Dataset: Size fractionated zooplankton, C:N, d13C, and d15N from JC214
Deployment: JC214

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Size fractionated zooplankton, C:N, d13C, and d15N from JC214Deployment: JC214

Dataset acquisition description

Dataset Processing Description

Dataset: Size fractionated zooplankton, C:N, d13C, and d15N from JC214
Deployment: JC214