Dataset: Sediment trap salp fecal pellet mass flux

Name: Sediment trap-derived flux of salp fecal pellets (carbon mass flux) from the "SalpPOOP" cruise on R/V Tangaroa during October and November 2018
Published: 2020-06-02
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.813828.1

Spatial Extent: N:-42.654 E:-179.7765 S:-45.54917 W:174.11167

Temporal Extent: 2018-10-24 - 2018-11-18

Project:

Collaborative Research: Quantifying trophic roles and food web ecology of salp blooms of the Chatham Rise (Salp Food Web Ecology)

Principal Investigator:

Michael Stukel (Florida State University, FSU)

Co-Principal Investigator:

Moira Decima (New Zealand National Institute of Water and Atmospheric Research, NIWA)

Thomas Kelly (Florida State University, FSU)

Scott Nodder (New Zealand National Institute of Water and Atmospheric Research, NIWA)

BCO-DMO Data Manager:

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

Version:

Version Date:

2020-06-02

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Sediment trap-derived flux of salp fecal pellets (carbon mass flux) from the "SalpPOOP" cruise on R/V Tangaroa during October and November 2018

Abstract:

Sediment trap-derived flux of salp fecal pellets (carbon mass flux) from the "SalpPOOP" cruise on R/V Tangaroa during October and November 2018.

Expand/Collapse All

Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2020-06-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.813828.1	2021-02-16

Methods & Sampling

Data comes from VERTEX-style, surface-tethered, drifting sediment trap deployments. Particle interceptor tubes were deployed on cross-pieces with 16 tubes attached. Tubes were deployed with a dense formaldehyde brine created by adding NaCl and formaldehyde to filtered seawater. After recovery, overlying seawater was removed from each cruise by gentle suction. Tubes were then gravity filtered through a 200-micron nitex mesh filter, and the 200-micron filters were carefully analyzed under a stereomicroscope and all metazoan zooplankton "swimmers" were removed from the sample. Material remaining on the 200-micron filters (i.e., sinking material) was then imaged with a macrophotography rig and subsequently rinsed back into the original sample tube (i.e., re-combined with the <200-micron sinking material). Samples were then separated and filtered onto different types of filters for a suite of different analyses including: particulate organic carbon flux, particulate nitrogen flux, carbon and nitrogen isotopes, chlorophyll a and phaeopigment flux, microscopy, genetic analyses, and 234Th flux.

>200-um filters for each sediment trap tube (used for removing mesozooplankton swimmers) was imaged using a Canon 5D mark II camera with attached 100-mm F/2.8 macro lens mounted in a downward-facing macrophotography rig. Images were manually analyzed using Image J to determine morphometric measurements for each large salp fecal pellet, which were then used to estimate biovolume. Carbon content of each fecal pellet was determined from a log-log relationship between pellet volume and pellet carbon mass. This relationship was determined from individual fecal pellets that were collected at sea, imaged to determine biovolume, and analyzed for carbon and nitrogen content on an isotope ratio mass spectrometer. Please note that these pellet flux measurements should be considered a conservative estimate of total salp fecal pellet mass flux as they only include intact pellets that could be identified from the images take of the filters.

Data Processing Description

BCO-DMO Processing:
- converted latitude values from degrees South to degrees North;
- rounded lat and lon to 5 decimal places;
- added UTC date/time fields in ISO8601 format;
- renamed fields.

Data Files

File
fecal_pellet_flux.csv (Comma Separated Values (.csv), 3.36 KB) MD5:862a9216d82398886c76da491dba9e70 Primary data file for dataset ID 813828

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1756465
NSF Division of Ocean Sciences	OCE-1756610

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
TAN1810	SalpPOOP	2018-10-23	R/V Tangaroa	Moira Decima (Chief Scientist)	data info

Instruments

Camera

Supplied Name: Canon 5D mark II camera

Supplied Description:

Instrument Type

Generic Name: Camera

Acronym: camera

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/311/

Generic Description:

All types of photographic equipment including stills, video, film and digital systems.

Isotope-ratio Mass Spectrometer

Supplied Name: isotope ratio mass spectrometer

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).

Microscope - Optical

Supplied Name: stereomicroscope

Supplied Description:

Instrument Type

Generic Name: Microscope - Optical

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/

Generic Description:

Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".

Sediment Trap

Supplied Name: VERTEX-style, surface-tethered, drifting sediment trap

Supplied Description:

Instrument Type

Generic Name: Sediment Trap

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/33/

Generic Description:

Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Cruise name	unitless	cruise_name
Cycle	Lagrangian experiement number	unitless	exp_id
Date_Deployed	Date/time of deployment (New Zealand ST); format: MM/DD/YY hh:mm	unitless	date_local
Date_Recovered	Date/time of recovery (New Zealand ST); format: MM/DD/YY hh:mm	unitless	date_local
Deployed_ISO_DateTime_UTC	Date/time of deployment (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ	unitless	ISO_DateTime_UTC
Deployment_Lat	Latitude of deployment (positive values = North)	degrees North	lat
Deployment_Lon	Longitude of deployment (positive values = East)	degrees East	lon
Depth	Depth of deployment	meters (m)	depth
Duration	Duration of deployment	days	duration
Recovered_ISO_DateTime_UTC	Date/time of recovery (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ	unitless	ISO_DateTime_UTC
Recovery_Lat	Latitude of recovery (positive values = North)	degrees North	lat
Recovery_Lon	Longitude of recovery (positive values = East)	degrees East	lon
Salp_Pellet_Mass	Salp fecal Pellet Mass Flux	milligrams C per square meter per day (mg C m-2 d-1)	C
stdev_FPMass	Standard deviation of Salp fecal pellet mass flux	milligrams C per square meter per day (mg C m-2 d-1)	C

Status message

Database

Contribute Data

Dataset: Sediment trap salp fecal pellet mass flux