Sediment trap carbon, nitrogen, and isotope flux from the "SalpPOOP" cruise on R/V Tangaroa during October and November 2018 (NCEI Accession 0291434)

This dataset contains biological and chemical data collected on R/V Tangaroa during cruise TAN1810 from 2018-10-24 to 2018-11-15. These data include Nitrogen, chlorophyll a, d13C, d15N, depth, particulate organic Carbon (POC), and total phaeopigment. The instruments used to collect these data include Camera, Isotope-ratio Mass Spectrometer, Microscope - Optical, and Sediment Trap. These data were collected by Michael Stukel and Thomas Kelly of Florida State University and Moira Decima and Scott Nodder of National Institute of Water and Atmospheric Research, New Zealand as part of the "Collaborative Research: Quantifying trophic roles and food web ecology of salp blooms of the Chatham Rise (Salp Food Web Ecology)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2021-02-16.

The following is the text of the dataset description provided by BCO-DMO:

Sediment trap carbon, nitrogen, and isotope flux

Dataset Description:
Acquisition Description:
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.

Samples for particulate organic carbon flux were vacuum filtered through pre-combusted GF/F filters at low pressure. Samples were then frozen at -80C and stored for the duration of the cruise. They were then dried out for shipping. On land they were acidified by fuming with HCl. Samples were then thoroughly dried and packed into pre-combusted tin cups. They were analyzed by isotope ratio mass spectrometer at the UC Davis Stable Isotope Facility for carbon, nitrogen, carbon isotopes, and nitrogen isotopes.