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Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Phytoplankton net primary production (NPP) and size-fractionated chlorophyll at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928088

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Abstract:
Water was collected for net primary production (NPP) incubations and total and size-fractionated chlorophyll a from multiple depths spanning the euphotic zone, using a CTD-rosette equipped with 24 10L Niskin bottles. For NPP, water from 6 depths spanning the euphotic zone (0.1% of surface irradiance) were incubated in situ during the 5 Lagrangian cycles sampled during SalpPOOP. NPP was assessed using carbon-14 (14C) assays, with 24-hour incubations that integrated respiration/production balance over the dark and light periods of the diel cycle. Seawater samples (1.3 L) were collected into an acid-rinsed polycarbonate bottle from pre-dawn CTD casts (~2:00 h each day of each cycle) at six depths spanning the euphotic zone. The bottles were then spiked with 0.1 mCi 14C-bicarbonate (DHI, Denmark or Perkin-Elmer, USA) before triplicate controls on ethanolamine were taken to quantify initial radioactivity at each depth incubation. After gentle mixing, the 'hot' 1.3 L was dispensed into three light and one dark bottles (320 mL acid-cleaned polycarbonate) that were incubated in situ on the free-drifting array. After recovery, the entire content of the bottles were filtered onto 0.2 µm pore-size 25-mm polycarbonate filters and kept frozen until analysis. Once on land, filters were acidified with 200 µL 0.5 N HCL, Hi Safe 3 liquid scintillation cocktail was added and disintegrations per minute were then determined using a scintillation counter following procedures described in Gutiérrez‐Rodríguez et al (2020 doi:10.1029/2019JC015550). NPP of multiple casts (2 to 4) conducted during each experimental cycle were averaged to obtain cycle estimates of primary production. If only one estimate per depth was available, the std is indicated as n.d. Samples for total Chlorophyll a (Chl a) analysis were filtered on‐board on 25mm Whatman GF/F filters using low vacuum (<200 mm Hg). The filters were folded, wrapped in aluminum foil, flash frozen in liquid nitrogen and kept at −80 °C until analysis. For size fractionated Chl a analysis (0.2–2, 2–20, and >20 μm), 250 ml of seawater were sequentially filtered through a 20 μm polycarbonate filter first (by gravity), and then sequentially through 2‐ and 0.2‐μm polycarbonate filters under low pressure vacuum. Filters were folded and stored in 1.5 ml cryovials, flash frozen in liquid nitrogen, and stored at −80 °C. Analyses was done following 90% acetone extraction using standard fluorometric methods with a Turner Design 10AU fluorometer after Strickland and Parsons (1972 doi:10.1002/iroh.19700550118).
Keyword(s):
carbon export; SalpPOOP; salps
Related to:
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Nutrient concentrations at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928087
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Phytoplankton biomass accumulation at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928089
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Phytoplankton community composition at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928086
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Phytoplankton physiology at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928084
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Salp abundance and size-structure at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928092
Décima, Moira; Gutiérrez-Rodríguez, Andrés; Selph, Karen E; Safi, Karl; Kelly, Thomas B; Latasa, Mikel; Gorbunov, Maxim Y (2021): Salp grazing and fecal pellet production at Chatham Rise, east of New Zealand, measured during the SalpPOOP (TAN1810) campaign onboard the RV Tangaroa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.928096
Project(s):
Salp Particle expOrt and Ocean Production (SalpPOOP)
Coverage:
Median Latitude: -44.261421 * Median Longitude: 177.567105 * South-bound Latitude: -45.556000 * West-bound Longitude: 174.095000 * North-bound Latitude: -42.662000 * East-bound Longitude: -179.884000
Date/Time Start: 2018-10-25T13:13:00 * Date/Time End: 2018-11-17T12:35:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 100 m
Event(s):
TAN1810_1_015 (TAN1810_015) * Latitude: -44.600000 * Longitude: 174.220000 * Date/Time: 2018-10-25T13:13:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: CTD
TAN1810_1_024 (TAN1810_024) * Latitude: -44.530000 * Longitude: 174.230000 * Date/Time: 2018-10-26T13:11:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: CTD
TAN1810_1_039 (TAN1810_039) * Latitude: -44.510000 * Longitude: 174.120000 * Date/Time: 2018-10-27T13:07:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: CTD
Comment:
Empty cells = nd
This study was funded by the Ministry for Business, Innovation and Employment (MBIE) of New Zealand, NIWA core programmes Coast and Oceans Food Webs (COES- COES1901) and Ocean Flows (COOF-COOF1902), the Royal Society of New Zealand Marsden Fast-track award to Moira Décima, and NSF award #OCE-1756610 to Michael R. Stukel and Karen E. Selph.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventDécima, Moira
2Sample IDSample IDDécima, Moira
3Numbern#Décima, MoiraCTD number
4Date/Time of eventDate/TimeDécima, Moira
5Date/Time localDate/Time localDécima, MoiraLocal time, New Zealand Standard Time (NZST)
6Date/Time localDate/Time localDécima, MoiraTime in (local, NZST)
7Date/Time localDate/Time localDécima, MoiraTime out (local, NZST)
8Latitude of eventLatitudeDécima, Moira
9Longitude of eventLongitudeDécima, Moira
10DEPTH, waterDepth watermDécima, MoiraGeocode
11Chlorophyll aChl amg/m3Décima, MoiraFluorometer, Turner Designs, 10-AUSum of chlorophyll size fractions
12Chlorophyll a, size fraction 0.2 - 2 µmChl a 0.2-2 µmmg/m3Décima, MoiraFluorometer, Turner Designs, 10-AU
13Chlorophyll a, size fraction 2 - 20 µmChl a 2-20 µmmg/m3Décima, MoiraFluorometer, Turner Designs, 10-AU
14Chlorophyll a, size fraction > 20 µmChl a >20 µmmg/m3Décima, MoiraFluorometer, Turner Designs, 10-AU
15Net primary production of carbonNPP Cmg/m3/dayDécima, Moira14C incorporationPer bottle
16Net primary production of carbon, standard deviationNPP C std dev±Décima, Moira14C incorporationPer bottle
17Net primary production of carbonNPP Cmg/m3/dayDécima, Moira14C incorporationDepth integrated strata
18Net primary production of carbonNPP Cmg/m3/dayDécima, Moira14C incorporationVertically integrated
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1263 data points

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