European Ocean Biodiversity Information System

[ report an error in this record ] Print this page

Macrozoobenthos_BRIDGE-BS_IBER-BAS: Soft-bottom macrozoobenthos from the coastal Bulgarian Black Sea collected in 2022 by IBER-BAS, BRIDGE-BS project
Citable as data publication
Klayn, S., Berov D., Bobchev N., Karamfilov V., 2024. Soft-b ottom macrozoobenthos from the coastal Bulgarian Black Sea collected in 2022 by IBER-BAS, BRIDGE-BS project. Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences (IBER-BAS). Dataset/Samplingevent.
Contact: Klayn, Stefania

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.


Abundance (individual counts) and biomass (g) of macrozoobenthic taxa at soft-bottom stations along the Bulgarian Black Sea coast, collected during a field survey of IBER-BAS in 2022 as part of project BRIDGE-BS ( The dataset also contains organism life stages, sediment type (Folk16), and EUNIS L3 habitat type at the stations.


Samples were collected as part of coastal surveys along the Bulgarian Black Sea cond ucted under BRIDGE-BS project, aimed at gathering spatially referenced data on the biodiversity, community structure and ecological condition of selected dominant soft-bottom benthic ecosystems to complement existing datasets in the area and fill gaps therein. An attempt was made to cover as many different MSFD national habitat types as possible based on previous data and modeling (Emodnet Seabed habitats). Sampling was performed by Van Veen grab (0.05 m2 sampling area) and diver-operated hand corer (10 cm internal diameter, ~20 cm sediment penetration depth). Samples were sieved on a 0.5 mm mesh sieve, and fixed in 10% formaldehyde-seawater solution until analysis. In the laboratory, samples were hand-sorted under a stereomicroscope to the lowest possible taxonomic level (preferably species), and counted. Individual biomass was measured as preserved wet weight on an analytical scale to the nearest 0.0001 g; mollusks were weighed with their shells, and tubicolous polychaetes and her mit crabs were taken out of their tubes/shells before weighing.

Biology > Benthos > Zoobenthos
Marine/Coastal, Abundance, Benthic communities, Benthic infauna, Biomass, Coastal waters, Community composition, Marine invertebrates, Seagrass, Sublittoral zone, Black Sea Plate, EurOBIS calculated BBOX, Acari, Bivalvia, Chordata, Gastropoda, Hirudinea, Malacostraca, Nemertea, Oligochaeta, Phoronida, Platyhelminthes, Polychaeta, Thecostraca

Geographical coverage
Black Sea Plate [Marine Regions]
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: 27,4653; MinLat: 41,9897 - MaxLong: 28,0569; MaxLat: 42,978 [WGS84]

Temporal coverage

Taxonomic coverage
Acari [WoRMS]
Bivalvia [WoRMS]
Chordata [WoRMS]
Gastropoda [WoRMS]
Hirudinea [WoRMS]
Malacostraca [WoRMS]
Nemertea [WoRMS]
Oligochaeta [WoRMS]
Phoronida [WoRMS]
Platyhelminthes [WoRMS]
Polychaeta [WoRMS]
Thecostraca [WoRMS]

Bulgarian Academy of Sciencesdata creator
Klayn, Stefania
Berov, Dimitar
Bobchev, Nikola

Related datasets
Published in:
EurOBIS: European Ocean Biodiversity Information System, more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2024-02-15
Information last updated: 2024-03-19
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy