Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

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

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Biomass accumulation was assessed by subtracting phytoplankton mortality (due to microzooplankton) from phytoplankton growth rates. Rates of phytoplankton growth and microzooplankton grazing were assessed daily with the dilution technique (Landry and Hassett 1982; doi:10.1007/BF00397668), following the two treatment approach (Landry, Haas et al. 1984 doi:10.3354/meps016127), at six depths within the euphotic zone. We implemented this mini-dilution approach to generate vertically resolved growth and grazing rates, but also conducted a full dilution experiment on the last day of each of the cycles (n = 5) to test linearity assumptions of the method. Seawater collected with the Niskin bottles attached to the CTD rosette at 02:00 h was used to fill a pair of 2.2-L polycarbonate bottles (100%, B and C) while a third bottle (A) was filled with 25% whole seawater diluted with 0.2-µm filtered seawater obtained immediately before by gravity filtration using an Acropak filter cartridge (Pall) directly from the same Niskin bottle. Nutrients (final concentrations in 2.2L bottles; nitrate 0.18 μM, ammonium 4.16 μM, phosphate 15.08, silicate 44.2 μM, and vitamins) were added to bottles A and B in order to ensure the assumption that the same phytoplankton intrinsic growth rate was occurring in WSW and FSW bottles despite dilution (Gutiérrez‐Rodríguez, Safi et al. 2020 doi:10.1029/2019JC015550). Bottles were then incubated in situ at the same six depths of collection using a drifting array. Rates were calculated from changes in Chl a concentration and picophytoplankton abundance between the beginning and end of the experiment assuming exponential growth of phytoplankton. Microzooplankton grazing rate was estimated from: µ = (kA – kB)/(1-x) where kA and kB are the observed net rates of change of chl a in bottles A and B, respectively, and x is the fraction of whole seawater in the diluted bottle A (0.25). Phytoplankton growth rate was estimated from µ =m+kB. Photoacclimation effects were corrected from changes in cell chl a fluorescence estimated by flow cytometry during incubations as a proxy of cell chl a content (Gutierrez-Rodriguez, Latasa et al. 2010 doi:10.1016/j.dsr.2009.12.013). These include estimating the photoacclimation index (Phi) from changes in FL3: FSC and calculating an average value from Phi index obtained for pico- and nanoeukaryotic populations weighted by their biomass contribution. Accumulation was calculated by subtracting the C-based estimates of microzooplankton grazing (from the dilution experiments) from the 14C-based NPP.
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 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 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
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: -44.201683 * Median Longitude: 178.212880 * South-bound Latitude: -45.549167 * West-bound Longitude: 174.203167 * North-bound Latitude: -42.654000 * East-bound Longitude: -179.818000
Date/Time Start: 2018-10-23T18:54:00 * Date/Time End: 2018-11-18T12:44:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 100 m
Event(s):
TAN1810_1 (TAN1810_cycle_1) * Latitude Start: -44.590500 * Longitude Start: 174.203167 * Latitude End: -44.636667 * Longitude End: 174.269833 * Date/Time Start: 2018-10-23T18:54:00 * Date/Time End: 2018-10-30T13:09:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: Multiple investigations (MULT) * Comment: Cycle 1
TAN1810_2 (TAN1810_cycle_2) * Latitude Start: -44.556300 * Longitude Start: 178.496300 * Latitude End: -44.544200 * Longitude End: 179.538500 * Date/Time Start: 2018-11-01T13:05:00 * Date/Time End: 2018-11-05T16:03:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: Multiple investigations (MULT) * Comment: Cycle 2
TAN1810_3 (TAN1810_cycle_3) * Latitude Start: -42.654000 * Longitude Start: 178.020833 * Latitude End: -42.787333 * Longitude End: 178.414500 * Date/Time Start: 2018-11-06T13:12:00 * Date/Time End: 2018-11-09T13:10:00 * Location: Chatham Rise, east of New Zealand * Campaign: TAN1810 (Salp Particle expOrt and Ocean Production (SalpPOOP)) * Basis: Tangaroa * Method/Device: Multiple investigations (MULT) * Comment: Cycle 3
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
2CycleCyDécima, Moira
3Cycle descriptionCycle descrDécima, Moira
4Date/Time of eventDate/TimeDécima, Moira
5Date/Time of event 2Date/Time 2Décima, Moira
6Latitude of eventLatitudeDécima, Moira
7Latitude of event 2Latitude 2Décima, Moira
8Longitude of eventLongitudeDécima, Moira
9Longitude of event 2Longitude 2Décima, Moira
10DEPTH, waterDepth watermDécima, MoiraGeocode
11Net primary production of carbonNPP Cmg/m3/dayDécima, Moira14C in-situ incubationPhytoplankton biomass accumulation (NPP minus microzooplankton grazing); Means from 2 or more measurements
12Net primary production of carbon, standard deviationNPP C std dev±Décima, Moira14C in-situ incubationPhytoplankton biomass accumulation (NPP minus microzooplankton grazing); nd = only one measurement done at that specific depth throughout the experimental cycle
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
111 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML