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  • 1
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    Data collection of the PHYCOB cruise with focus on harmfula algal species in the Southwestern Black Sea in 2021 (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-07
    Description: The data set was acquired during the PHYCOB cruise in the frame of the Eurofleets+ programme (https://www.eurofleets.eu/2021/10/22/phycob-an-international-oceanographic-expedition-into-the-western-black-sea-coordinated-by-the-alfred-wegner-institut-helmholtz-zentrum-fur-polar-und-meeresforschung-awi/) within the Regional call in the territorrial waters of Romania and Bulgaria in the Western Baltic Sea from 11th to 17th September 2021. The aim of the cruise was to assess the occurrence of potentially harmfal algae and their associated phycotoxins in the Black Sea and the accompanying environmental parameters. Sampling was performed by CTD casts and Rosette water sampling in addition to vertical phytoplankton net hauls from 30 m depth to surface. The determined parameters include the following: Quantitative phytoplankton cell counts in water samples, qulitative determination of toxigenic species next generation sequencing data in plankton net concentrates, monoclonanal cultures established from water sample isolates, phycotoxins in plankton net concentrates, inorganic nitruinets (nitrate/nitrite, phosphate, silicate) , vitamin B12, particulate organic carbon, particulate organic nitrogen, flowcytometry data, and CTD data (temperature, salinity, chlorophyll-a, oxygen, turbidity, radiance).
    Keywords: chlorophyll-a; CTD profile; HAB species; isolated strains; net tows; NOC; Nutrient data; phycotoxins; POC; vitamin B12
    Type: Dataset
    Format: application/zip, 8 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Species determination by OBIS from water samples taken during the PHYCOB cruise in the Southwestern Black Sea in 2021 (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-07
    Description: 1 L samples for further phytoplankton analysis were collected from Nansen bottles installed on a SeaBird CTD Rosette from 3 layers of the water column (usually surface, termocline and deep chlorophyll maximum). The samples were preserved onboard with 20 mL formaldehyde and concentrated in the laboratory by the sedimentation method down to aprox. 30 mL. The method relies on settling and removing the supernatant in two stages, once every two weeks (Moncheva & Parr, 2010). The determination and counting of species cells in the analyzed sample fraction (1 mL) was performed under the plankton inverted microscope using 20x or 40x objectives (Moncheva, 2008). With the primary data thus obtained, the abundance (cells/L) and wet biomass (mg/m³) were calculated for each species/the highest taxonomic level that was possible to identify. The names of the identified species have been updated according to WORMS (WoRMS Editorial Board, 2022).
    Keywords: Biomass, wet mass per volume; chlorophyll-a; Class; Code; Country; CTD profile; Date; Date/Time of event; Depth, bottom/max; Depth, top/min; Event label; Family; HAB species; Investigator; isolated strains; Kingdom; Latitude of event; Location; Longitude of event; MULT; Multiple investigations; net tows; NOC; Nutrient data; Order; PHYCOB; PHYCOB_1; PHYCOB_10; PHYCOB_11; PHYCOB_12; PHYCOB_13; PHYCOB_14; PHYCOB_15; PHYCOB_16; PHYCOB_17; PHYCOB_18; PHYCOB_19; PHYCOB_2; PHYCOB_20; PHYCOB_21; PHYCOB_22; PHYCOB_23; PHYCOB_3; PHYCOB_4; PHYCOB_5; PHYCOB_6; PHYCOB_7; PHYCOB_8; PHYCOB_9; phycotoxins; Phylum; POC; Provenance/source; Scientific name; Species; Species, unique identification (Semantic URI); Species, unique identification (URI); Total counts; Tübitak Marmara; vitamin B12; Year of analysis
    Type: Dataset
    Format: text/tab-separated-values, 35829 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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