This dataset provides size-fractionated (SF) chlorophyll measurements taken across the subtropical front east of New Zealand in October and November 2018. The dataset provides depth-resolved measurements of SF chlorophyll for 0.2 µm, 2 µm and 20 µm sized cells for locations in the subtropical and subantarctic-influenced locations of the subtropical front. Samples for size fractionated chlorophyll a (SF Chla) were analyzed by first gravity filtering a sample (250 mL) through a 20 µm 47-mm polycar...
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Data was collected in the Chatham Rise section of the Southern Ocean, located east of Aotearoa New Zealand, as part of the SALPOOP (‘Salp Particle expOrt and Ocean Production’) voyage during October to November 2018. ). We conducted five Lagrangian experiments (hereafter referred to as “cycles”) that lasted four to eight days (Décima et al., 2023). There were three cycles that were sampled in SA waters (1, 2 and 5) and two cycles in ST waters (3 and 4) while salps were only present in three cycles (1, 2 and 4). Six depths were chosen to span the euphotic zone (based on chlorophyll fluorescence measured during the conductivity-temperature-depth (CTD) downcast profiles).
Size Fractionated Chlorophyll a Measurements
Samples for size fractionated chlorophyll a (SF Chla) were analyzed by first gravity filtering a sample (250 mL) through a 20 µm 47-mm polycarbonate filter, then with low vacuum pressure, filtering sequentially through a 2 µm and a 0.2 µm filter. Filters were then folded, placed in 1.5 mL cryovials and frozen (-80 °C) until analysis (Gutiérrez‐Rodríguez et al., 2020). Chla and acidified phaeopigment-a concentrations were measured (within 3 months) using ice-cold 90% acetone extraction by spectrofluorometric methods (APHA 10200 H) on a Varian Cary Eclipse fluorescence spectrophotometer (Rice et al., 2012).
Gutierrez Rodriguez, A., Stukel, M., Yingling, N. (2023) Size Fractionated Chlorophyll Measurements from R/V Tangaroa TAN1810 in the Chatham Rise (Subtropical and Sub-Antarctic waters off of New Zealand) from October to November 2018 (Salp Food Web Ecology project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-08-01 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/905404 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
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