Processing Steps |
- Parameter or Variable: Water pressure (measured); Units: dbar; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: Water pressure was recorded in 4-second intervals throughout the MOCNESS deployment (i.e., 15 environmental samples recorded for each minute). Depth reported as pressure; positive number increasing with water depth (1 dbar = 1 m seawater). Samples were collected using a 1-m2 MOCNESS outfitted with nine nets (0-8) 0.333 mm mesh, pressure sensor, flowmeter, temperature probe, and conductivity probe sensors. Net opening, net closing, and/or mean and standard deviation are provided for each environmental parameter in the summary data "WS3_MOC_summary.csv" for each net from the "WS3_MOC_all.csv" file.
- Parameter or Variable: Water depth (measured); Units: m; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Data Quality Method: Negative depth (pres < 0) data were recorded at the start and/or end of tows, when the MOCNESS instrument was at the surface awaiting deployment or retrieval. Environmental readings associated with these negative depths are not representative of the water column, and were thus removed from the dataset.
- Parameter or Variable: Volume of water filtered through the net (measured); Units: m3; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: FISHERY SURVEY - GEAR DEPTH - WATER TEMPERATURE (calculated); Units: degrees Celsius; Observation Category: Profile; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: Water temperature at measurement depth was recorded in 4-second intervals throughout the MOCNESS deployment (i.e., 15 environmental samples recorded for each minute). Samples were collected using a 1-m2 MOCNESS outfitted with nine 0.333mm nets, pressure sensor, flowmeter, temperature probe, and conductivity probe sensors. Net opening, net closing, and/or mean and standard deviation are provided for each environmental parameter in the summary data "WS3_MOC_summary.csv" for each net from the "WS3_MOC_all.csv" file.
- Parameter or Variable: FISHERY SURVEY - GEAR DEPTH - SALINITY (calculated); Units: psu; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: Samples were collected using a 1-m2 MOCNESS outfitted with nine 0.333mm nets, pressure sensor, flowmeter, temperature probe, and conductivity probe sensors. Net opening, net closing, and/or mean and standard deviation are provided for each environmental parameter in the summary data "WS3_MOC_summary.csv" for each net from the "WS3_MOC_all.csv" file.
- Parameter or Variable: Potential density (measured); Units: kg m-3; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: MOCNESS net tow angle (measured); Units: degrees; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: 1-m2 Multiple Opening/Closing Net Environmental Sensing System (MOCNESS) was outfitted with nine 0.333mm nets.
- Parameter or Variable: MOCNESS net tow horizontal velocity (measured); Units: knots; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: 1-m2 Multiple Opening/Closing Net Environmental Sensing System (MOCNESS) was outfitted with nine 0.333mm nets.
- Parameter or Variable: MOCNESS net tow vertical velocity (measured); Units: m min-1; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: 1-m2 Multiple Opening/Closing Net Environmental Sensing System (MOCNESS) was outfitted with nine 0.333mm nets.
- Parameter or Variable: Water flow meter output (measured); Units: number of revolutions; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: ICHTHYOPLANKTON IDENTITY (measured); Units: count; Observation Category: biological; Sampling Instrument: net - plankton net
- Parameter or Variable: Decapod Identification (measured); Units: Count; Observation Category: biological; Sampling Instrument: net - plankton net; Sampling and Analyzing Method: Decapod identification protocol was followed for the sample processing, and the Decapods were identified to the lowest possible taxonomic level the target taxa 1-14 which belong to the following families: Palinuridae, spiny lobsters (Panulirus spp.), Scyllaridae, slipper lobsters (Scyllarus and Scyllarides); commercial shrimp species, Penaeidae, Sicyoniidae and Solenoceridae - Litopenaeus setiferus (white shrimp), Farfantepenaues duorarum (pink shrimp), F. aztecus (brown shrimp), rock shrimp (Sicyonia spp.), seabob shrimp (Xiphopenaeus kroyeri), roughneck shrimp (Rimapenaeus spp.); Solenocera spp; commercial crab species- Portunidae, blue crab Callinectes sp., Arenaeus cribrarius, Ovalipes floridanus, Portunus spp. Achelous spp., Menippidae , stone crab Menippe spp., Geryonidae, red deep sea crab Chaceon quinquedes and golden crab (C. fenneri). Identified “Other decapods” taxa to infraorder level (caridea, anomura, etc) or lower level when such identification can be made easily with little additional time such as for the typical planktonic shrimp Lucifer sp and Acetes americanus. If an abundant taxon is recognizable record the taxon name and the respective number for future reference in the comments of the benchsheet.; Data Quality Method: 45.5% of samples from Walton Smith 3 were processed for decapods. The remaining decapods from the collection were not quantified or identified due to time constraints and the tiered prioritization of NRDA sample processing. Only completed samples are provided in this dataset.
- Parameter or Variable: Taxonomic Identification (calculated); Units: text; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: Specimen measurements (measured); Units: mm; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: Potential temperature (theta) (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: Samples were collected using a 1-m2 MOCNESS outfitted with nine 0.333mm nets, pressure sensor, flowmeter, temperature probe, and conductivity probe sensors. Net opening, net closing, and/or mean and standard deviation are provided for each environmental parameter in the summary data "WS3_MOC_summary.csv" for each net from the "WS3_MOC_all.csv" file.
- Parameter or Variable: FISH SPECIES (measured); Units: n/a; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: FISHERY SURVEY - CATCH MEASUREMENTS - DETAILS (measured); Units: count; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: ICHTHYOPLANKTON LENGTH (measured); Units: mm; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: ZOOPLANKTON SPECIES IDENTITIES (measured); Units: count; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
- Parameter or Variable: Zooscan imagery (measured); Units: N/A; Observation Category: in situ; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: Original zooplankton data were received as image data and excel spreadsheets with density calculations for samples processed during the NRDA effort. The image dataset includes neuston zooplankton samples in addition to the MOCNESS zooplankton samples. However, the dataset authors cannot confirm that all neuston samples taken during the cruise are represented in this dataset. Scans that were not separated into vignettes at the time of receipt were not processed by the dataset authors, but the files necessary for processing are included. Samples processed by the Robinson lab were sorted manually in Ecotaxa and do not have "Learning Set" PID process files. Other PID process files produced by Zooscan are available in the PID process folder for each sample.
- Parameter or Variable: Zooplankton density (measured); Units: number of individuals/m^3; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); Sampling and Analyzing Method: The samples not scanned during the original NRDA effort were scanned by the Robinson lab at the University of Louisiana at Lafayette for Walton Smith 3. The densities in this dataset were calculated from the ZooScan image data. Density was calculated as the (number of individuals*reciprocal of aliquot)/volume filtered. The dataset authors are curating the deep-pelagic plankton data for analysis and were not part of the sample collection effort. Original zooplankton data were received as image data and excel spreadsheets with density calculations for samples processed during the NRDA effort. Image data submitted under the MOCNESS data was received as excel files from the Hernandez lab at the University of Southern Mississippi that compiled the field data from Microsoft Access database files. Data were acquired from the Deepwater Horizon Plankton Assessment Archive (DWHPAA) and NCEI. Field data were filtered by cruise and joined to zooplankton density data. NRDA data have undergone QC by the dataset authors. Data have been reviewed and edited for accuracy (e.g., corrections to depth, volume, latitude, and longitude based on MOCNESS instrument files and cruise plans). Samples without corresponding volume data were considered non-quantitative and were removed from the dataset. Columns and stations not pertinent to MOCNESS zooplankton data analysis were removed from the dataset.
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