Publication Date:
2023-06-19
Description:
The species composition and structure (e.g. abundance and biomass) of protistan plankton (cell size 〉 5 µm) and in situ chorophyll a were assessed in a shallow (〈50 m depth) inner shelf area of the Argentine Shelf called El Rincón (38º-41°S). Surface water samples (5 m depth) for plankton quantification were taken with Niskin bottles during four oceanographic cruises (two in early austral spring and two in late austral summer- early fall), onboard the vessel B. Houssay accounting for a total of 36 sampling stations. These samples were analyzed under optical microscopy following the inverted microscope technique with sedimentation chambers. Cells enumeration and identification was made up to species, genus or family level, which were afterward categorized in taxonomical groups: diatoms, dinoflagellates, coccolithophores and nanoflagellates. Carbon content was calculated following the method of Menden-Deuer et al. (2000) in which biovolume was estimated assigning a geometrical shape to each species (Hillebrand et al., 1999). The biomass is the result of multiplying the carbon content of a species by its abundance in the sample. The studied area supports important fishes of commercial interest, therefore plankton biodiversity records are neccesary to understand possible shifts at the population and community levels that might have cascading effects on marine ecosystems' productivity.
Keywords:
Abundance; Argentine Continental Shelf; BH0313_02; BH0313_03; BH0313_04; BH0313_06; BH0313_14; BH0313_18; BH0313_20; BH0313_27; BH0416_01; BH0416_02; BH0416_03; BH0416_04; BH0416_05; BH0416_06; BH0915_01; BH0915_02; BH0915_03; BH0915_05; BH0915_06; BH0915_07; BH0915_08; BH0915_09; BH0915_10; BH0915_11; BH0915_12; BH0915_13; BH0915_14; BH0915_16; BH0915_17; BH0915_18; BH0915_21; BH0915_22; BH0915_23; BH0916_01; BH0916_02; BH0916_03; BH0916_05; BH0916_07; BH0916_11; BH0916_12; BH0916_15; BH0916_16; BH0916_19; BH0916_20; BH0916_21; BH0916_23; BH0916_24; BH0916_B1; BH0916_B2; BH0916_B3; Biomass as carbon per volume; Bottle, Niskin; Calculated; Carbon per cell; Coccolithophores; Date/Time of event; DEPTH, water; diatoms; Dinoflagellates; Dr. Bernardo Houssay; Event label; IADO-PNA 0313; IADO-PNA 0416; IADO-PNA 0915; IADO-PNA 0916; inner shelf; Latitude of event; Light microscopy (Utermöhl 1958); Longitude of event; MULT; Multiple investigations; NIS; optical microscopy; Patagonian shelf, Argentina; Phytoplankton; Phytoplankton, cell biovolume; Taxa; Uniform resource locator/link to reference
Type:
Dataset
Format:
text/tab-separated-values, 16722 data points
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