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Collected material was fixed in 4% borax-buffered formaldehyde (pH 8.0–8.2; one part 40% formaldehyde to nine parts water/sample) and stored in plastic containers until processing. In the laboratory, each sample was concentrated to 100–150 cm³ before being split into sub-samples. Taxonomic composition, abundance, and biomass (estimated from species-specific individual weights) were determined using a Bogorov chamber and a stereoscopic zoom microscope. For each sub-sample, no fewer than 100 specimens of each of the three dominant species were enumerated. This counting approach yields an estimated abundance precision of about 20% for the dominant taxa (Alexandrov et al., 2014). Species identification was carried out according to Mordukhay-Boltovskoy (1968, 1969, 1972).\n        \n        \n        ","language":"eng","homepage":"https://blackseadb.org/","citation":{"text":"Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES): National Monitoring Studies 2010, (Mesozooplankton) https://doi.org/10.15468/qxc3uc accessed via GBIF.org on 2026-10-25.","citationProvidedBySource":true},"contactsCitation":[],"lockedForAutoUpdate":false,"createdBy":"b9a1023a-e508-4168-a837-fa0781820a8b","modifiedBy":"crawler.gbif.org","created":"2026-08-10T11:28:15.147+00:00","modified":"2026-08-10T12:53:49.453+00:00","contacts":[{"key":7103446,"type":"ORIGINATOR","primary":true,"userId":[],"firstName":"Mykhailo","lastName":"NABOKIN","position":[],"email":[],"phone":[],"homepage":[],"organization":"Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES)","address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-08-10T12:53:49.421+00:00","modified":"2026-08-10T12:53:49.421+00:00"},{"key":7103447,"type":"USER","primary":false,"userId":[],"firstName":"Oleksandr","lastName":"Neprokin","position":[],"email":["o.neprokin@gmail.com"],"phone":[],"homepage":[],"organization":"Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES)","address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-08-10T12:53:49.424+00:00","modified":"2026-08-10T12:53:49.424+00:00"},{"key":7103448,"type":"ADMINISTRATIVE_POINT_OF_CONTACT","primary":true,"userId":[],"firstName":"Olena","lastName":"Miasnikova","position":[],"email":[],"phone":[],"homepage":[],"organization":"Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES)","address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-08-10T12:53:49.426+00:00","modified":"2026-08-10T12:53:49.426+00:00"}],"endpoints":[{"key":1312401,"type":"DWC_ARCHIVE","url":"http://gp.sea.gov.ua:8082/ipt/archive.do?r=ukrmon_2010","createdBy":"b9a1023a-e508-4168-a837-fa0781820a8b","modifiedBy":"b9a1023a-e508-4168-a837-fa0781820a8b","created":"2026-08-10T12:52:48.492+00:00","modified":"2026-08-10T12:52:48.492+00:00","machineTags":[]},{"key":1312400,"type":"EML","url":"http://gp.sea.gov.ua:8082/ipt/eml.do?r=ukrmon_2010","createdBy":"b9a1023a-e508-4168-a837-fa0781820a8b","modifiedBy":"b9a1023a-e508-4168-a837-fa0781820a8b","created":"2026-08-10T12:52:48.417+00:00","modified":"2026-08-10T12:52:48.417+00:00","machineTags":[]}],"machineTags":[{"key":33267278,"namespace":"crawler.gbif.org","name":"crawl_attempt","value":"9","createdBy":"crawler.gbif.org","created":"2026-10-19T01:04:32.120+00:00"}],"tags":[],"identifiers":[{"key":471942,"type":"UUID","identifier":"4166b6fd-ce20-47b1-b4a1-150538d0ff49","createdBy":"crawler.gbif.org","created":"2026-08-10T12:53:49.429+00:00","primary":false},{"key":471931,"type":"URL","identifier":"http://gp.sea.gov.ua:8082/ipt/resource?r=ukrmon_2010","createdBy":"crawler.gbif.org","created":"2026-08-10T11:29:16.093+00:00","primary":false}],"comments":[],"bibliographicCitations":[],"curatorialUnits":[],"taxonomicCoverages":[],"geographicCoverages":[{"description":"North-western part of the Black Sea","boundingBox":{"minLatitude":46.012,"maxLatitude":46.755,"minLongitude":30.081,"maxLongitude":32.168,"globalCoverage":false}}],"temporalCoverages":[{"@type":"range","start":"2010-01-13T00:00:00.000+00:00","end":"2010-11-17T00:00:00.000+00:00"}],"keywordCollections":[{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml","keywords":["Samplingevent"]}],"project":{"title":"National Monitoring Studies 2008","contacts":[{"type":"ADMINISTRATIVE_POINT_OF_CONTACT","primary":false,"userId":[],"firstName":"Oleksandr","lastName":"Leposhkin","position":[],"email":[],"phone":[],"homepage":[],"address":[]}],"awards":[],"relatedProjects":[]},"samplingDescription":{"methodSteps":[]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","pubDate":"2026-08-10T00:00:00.000+00:00","maintenanceUpdateFrequency":"AS_NEEDED","maintenanceDescription":"","license":"http://creativecommons.org/publicdomain/zero/1.0/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":"2026-08-10T12:53:49.351+00:00"},"approximateCounts":{"occurrenceCount":266}}