{"key":"5ed77e2d-8fb1-45bd-b7a4-5ff73dcc9ca5","installationKey":"f9df6cff-21d4-4d4b-8da4-eda454f5a086","publishingOrganizationKey":"2089ce96-4fb5-4a20-999c-3ccf45a27a4d","doi":"10.15468/yberdg","external":false,"numConstituents":0,"type":"SAMPLING_EVENT","title":"Romanian Black Sea Phytoplankton data from 2001 to 2005","description":"<p>The dataset contains phytoplankton data collected in the Black Sea between 2001 and 2005 and processed by Andrei C., Anghel A., Boicenco L., Ionescu C., and Sburlea A. The data were collected from shallow to shelf Romanian waters from various transects such as Sulina, Mila 9, Portita, and Sf. Gheorghe (northern zone, strongly influenced by the freshwater input from the Danube Delta) to Constanta, Mangalia, and Vama Veche (southern zone). The sampling was carried out from standard depths with Niskin bottles. From each depth was collected a sample of 500 ml.  The standard sedimentation technique for sample preparation was used (Morozova-Vodianitkaia, 1954). The scientific team identified and counted the phytoplankton species from a subsample with an inverted microscope and calculated the total abundance and biomass of each species. This dataset was compiled from a collection of phytoplankton datasheets and contains abundance (cells per liter) and biomass (mg/m3) data for individual phytoplankton taxa.</p>","language":"eng","citation":{"text":"Pantea E, Boicenco L, Vlas O (2024). Romanian Black Sea Phytoplankton data from 2001 to 2005. Flanders Marine Institute. 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F., Boicenco L. (2004). An annotated checklist of dinoflagellates in the Black Sea, Hydrobiologia, 517: 43-59.","identifier":"https://doi.org/10.1023/B:HYDR.0000027336.05452.07","citationProvidedBySource":false},{"text":"Bodeanu, N.,  Andrei, C., Boicenco, L., Popa, L., Sburlea, A. (2004). A new trend of the phytoplankton structure and dynamics in the Romanian marine waters. Cercetari Marine, 35, 77–86.","citationProvidedBySource":false},{"text":"Velikova, V., Cociasu, A., Popa, L., Boicenco, L., Petrova, D. (2005). Phytoplankton community and hydrochemical characteristics of the Western Black Sea, Water Science & Technology, 51 (11): 9–18.","identifier":"https://doi.org/10.2166/wst.2005.0385","citationProvidedBySource":false},{"text":"Nesterova, D., Moncheva, S., Mikaelyan, A., Vershinin, A., Akatov, V., Boicenco, L., Aktan, Y., Sahin, F., Gvarishvili, T. (2008). The state of phytoplankton. In: State of Environment Report 2001 - 2006/7, Prof. Oguz, T. (Ed.), Referans Çeviri Hizmetleri, Yazılım ve Yayıncılık Ltd. on behalf of the Commission on the Protection of the Black Sea Against Pollution, Istanbul, Turkey: 133–167.","citationProvidedBySource":false}],"curatorialUnits":[],"taxonomicCoverages":[{"description":"Phytoplankton taxa were identified to genus or species, and cover various taxonomic groups, from marine to brackish and freshwater species.","coverages":[{"scientificName":"Bacillariophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Chlorophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Chlorodendrophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Chrysophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Conjugatophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Cryptophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Cyanophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Dinophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Euglenoidea","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Ebriophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Prymnesiophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Pyramimonadophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Trebouxiophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Ulvophyceae","rank":{"verbatim":"class","interpreted":"CLASS"}}]}],"geographicCoverages":[{"description":"Romanian Black Sea waters","boundingBox":{"minLatitude":-43.742,"maxLatitude":45.214,"minLongitude":-28.579,"maxLongitude":31.41,"globalCoverage":false}}],"temporalCoverages":[{"@type":"verbatim","period":"2001−2005","type":"FORMATION_PERIOD"}],"keywordCollections":[{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml","keywords":["Marine phytoplankton","Black Sea","Samplingevent"]}],"samplingDescription":{"studyExtent":"Current dataset extends from 2001 to 2005, from March to November, without a similar annual frequency. The samples were collected from 12 transects that included 40 sampling stations in the Black Sea, covering coastal and shelf Romanian waters.","sampling":"Samples were collected from standard depths with Niskin bottles. From each depth was collected a sample of 500 ml. The samples were preserved with 14 ml of buffered 4% formaldehyde solution.","qualityControl":"Data in the Romanian Black Sea phytoplankton dataset were collected by experienced scientists. The data entry was done by a scientific team. The introduced data were checked by another scientist and the input errors were corrected, following the phytoplankton datasheets.","methodSteps":["This dataset was compiled from a historical collection of phytoplankton datasheets. These data sheets were used as a protocol for phytoplankton sampling and analysis. They provided information about the metadata (sampling transect, station number, coordinates of the sampling station, sampling depth, sample collection date, name of the researcher who processed the sample, etc.); the equations used to calculate the abundance of phytoplankton species; and data (identified species, cells counted in the subsample, total abundance, and total biomass).\nSamples were concentrated by sedimentation and surface water removal to increase the phytoplankton density in the sample by following the standard sedimentation technique for sample preparation (Morozova-Vodianitkaia, 1954). After the volume of the concentrated sample was measured, a subsample of 0.1 ml was taken from the concentrated sample, poured into the counting chamber, and analysed under an inverted microscope, in order to identify and count all the phytoplankton species. Phytoplankton abundance per litre was calculated by the following equation: N = V1/V2 x n x 2, where N is the number of cells per litre of water, V1 is the volume of the concentrated sample, V2 is the volume of subsample, n is the number of cells counted in a subsample and 2 is the multiplication factor (Morozova-Vodianitkaia, 1948; Bodeanu, 1987 - 1988). The phytoplankton biomass was determined based on morphometric measurement of phytoplankton units. The biomass of phytoplankton per cubic metre of water was calculated by multiplying the abundance with the average wet weight of the species, following the average weights tables elaborated by Morozova-Vodnițkaia (1948; 1954) and Pițîk (1950), modified and updated by Bodeanu N. and Ruță G. (1995)."]},"countryCoverage":[],"collections":[{"name":"INCDM_Fitoplancton_Fise date istorice_2001","parentIdentifier":"INCDM_Fitoplancton_Arhiva","curatorialUnits":[{"typeVerbatim":"sheets","count":1005,"deviation":2,"lower":0,"upper":0}]},{"name":"INCDM_Fitoplancton_Fise date istorice_2002","parentIdentifier":"INCDM_Fitoplancton_Arhiva","curatorialUnits":[]},{"name":"INCDM_Fitoplancton_Fise date istorice_2003","parentIdentifier":"INCDM_Fitoplancton_Arhiva","curatorialUnits":[]},{"name":"INCDM_Fitoplancton_Fise date istorice_2004","parentIdentifier":"INCDM_Fitoplancton_Arhiva","curatorialUnits":[]},{"name":"INCDM_Fitoplancton_Fise date istorice_2005","parentIdentifier":"INCDM_Fitoplancton_Arhiva","curatorialUnits":[]}],"dataDescriptions":[],"dataLanguage":"eng","pubDate":"2024-03-15T00:00:00.000+00:00","maintenanceUpdateFrequency":"UNKOWN","maintenanceDescription":"","license":"http://creativecommons.org/licenses/by-nc/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Event","extensions":["http://rs.tdwg.org/dwc/terms/Occurrence","http://rs.iobis.org/obis/terms/ExtendedMeasurementOrFact"],"modified":"2026-02-26T08:20:08.664+00:00"},"approximateCounts":{"occurrenceCount":18011}}