General Information

Event name: PL-24-001
Country: POLAND
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Planktonic life , Humans
Toxicity detected: Yes (Approximate range: 150 ug/L)
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Bathing service (Chief Sanitary Inspectorate))
Event occurred before in this location: Yes (occasionally)
Individuals to contact: Mazur-Marzec, Hanna , Kobos, Justyna

Location & Date

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Location: Latitude: , Longitude:
General location information: Gulf of Gdańsk, Southern Baltic Sea
HAB Area code(s): PL-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2024-06-27
Start: 2024-06-25, End: 2024-06-27
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Nodularia spumigena (1.2 mln (100 µm filament/L) cells/L)
biomass 11.0 mg/L
Co-Ocurring Species/Genus: Aphanizomenon sp. (1.4 mln (100 µm filament/L) cells/L)
biomass 9.8 mg/L
Dolichospermum spp. (1.4 mln (100 µm filament/L) cells/L)
biomass 1.9 mg/L
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: More information on the page https://sk.gis.gov.pl/index.php/kapieliska

Environmental Conditions

Weather: warm, calm Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
Surface
Growth: Advected
In situ
Growth Comments
Additional Environmental information: a large bloom of cyanobacteria, the water has changed color

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Nodularia spumigena Nodularins Nodularin 150 ug/L LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses: bathing site closed for 2-3 days in June 2024
Management decision: 2 bathing sites closed
Additional harmful effect information: warning against swimming in the water with changed color and smell
Created at 03:32 on 6 Apr 2025
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES


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