Citation:

PANGAEA.958525

Name: Phytoplankton taxon-specific growth and microzooplankton grazing rates in subantarctic HNLC waters on and off Campbell Plateau southeast of New Zealand during austral autumn
Published: 2023-05-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: diatoms; Ecumenical hypothesis; HNLC subantarctic; Microzooplankton grazing; Phytoplankton growth; prasinophytes

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Abstract:

Here we present data of phytoplankton pigment and flow cytometry (FCM) data in the water column (CTD_HPLC_FCM_May2022.xlsx) and dilution grazing experiments (DILEX_HPLC_FCM_Conc_May2022.xlsx), and derived apparent growth rates for specific pigment markers and picophytoplankton groups assessed by FCM (APPARENT_GROWTHRATES_May2022.xlsx). Samples and experiments were collected and carried out in subantarctic waters across the Campbell Plateau region southeast of New Zealand. We distinguish between a subset of 'Experimental' stations (n = 8), where serial dilution experiments were conducted and a subset of additional 'Biomass' stations (n = 7), where depth-resolved physico-chemical and biological measurements (e.g., nutrients, size-fractionated chlorophyll a (SF-Chla), optical microscopy, FCM and HPLC) were also undertaken throughout the euphotic zone. 'Experimental' stations were used to characterize phytoplankton group-specific growth and grazing rates and associated carbon production and microzooplankton consumption dynamics in surface-mixed layer waters (10 m) On-plateau (n = 5) and Off-plateau (n = 3) with 'Biomass' stations providing a broader context of the environmental conditions and phytoplankton biomass and taxonomic composition across the region.

Keyword(s):

diatoms; Ecumenical hypothesis; HNLC subantarctic; Microzooplankton grazing; Phytoplankton growth; prasinophytes

Supplement to:

Gutiérrez-Rodríguez, Andrés; Latasa, Mikel; Safi, Karl; Pinkerton, Matt; Nodder, Scott D (2023): Decoupled growth and grazing rates of diatoms and green algae drive increased phytoplankton productivity on HNLC sub‐ Antarctic plateaux. Limnology and Oceanography Letters, lol2.10355, https://doi.org/10.1002/lol2.10355

Related to:

Gutiérrez-Rodríguez, Andrés; Safi, Karl A; Fernandez, Denise; Forcen, Aitana; Gourvil, Priscilia; Hoffmann, Linn; Pinkerton, Matt; Sutton, Phil; Nodder, Scott D (2019): Phytoplankton community composition, pigment concentration and CTD measurements in high-hutrient low-chlorophyll subantarctic waters on Campbell Plateau, southeast of New Zealand during autumn 2017. National Institute of Water and Atmospheric Research, PANGAEA, https://doi.org/10.1594/PANGAEA.904458

Gutiérrez‐Rodríguez, A; Safi, Karl; Fernández, Diego; Forcén‐Vázquez, A; Gourvil, Priscilia; Hoffmann, L; Sutton, Phil; Nodder, Scott D (2020): Decoupling between phytoplankton growth and microzooplankton grazing enhances productivity in Subantarctic waters on Campbell Plateau, southeast of New Zealand. Journal of Geophysical Research, 125(2), https://doi.org/10.1029/2019JC015550

Coverage:

Median Latitude: -52.000480 * Median Longitude: 171.668641 * South-bound Latitude: -54.258400 * West-bound Longitude: 166.760350 * North-bound Latitude: -49.248380 * East-bound Longitude: 176.817600

Date/Time Start: 2017-03-19T00:00:00 * Date/Time End: 2017-03-29T00:00:00

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

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