General Information

Event name: PL-19-001
Country: POLAND
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Planktonic life
Toxicity detected: Yes (Approximate range: NOD (300 ug/L))
Associated syndrome: Cyanobacterial toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
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 Gdansk, Southern Baltic
HAB Area code(s): PL-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2019-07-26
Start: 2019-07-08, End: 2019-08-03
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Nodularia spumigena ( cells/L)
0.57 mln (100 m filament/L), biomass 3.66 mg/L
Co-Ocurring Species/Genus: Aphanizomenon flos-aquae (Linneus) Ralfs ex Bornet et Flahaut 1888 ( cells/L)
0.57 mln (100 m filament/L); biomass 1.12 mg/L
Dolichospermum spp. ( cells/L)
0.02 mln (100 m filament/L); biomass 1.31 mg/L
Chlorophyll concentration, if known: 654.90 µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: warm, calm Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 21 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 7,1 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
Growth: Advected
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Nodularia spumigena Nodularins Nodularin 300 g/L LC
Kit used: Type of kit used:
Additional information:
Economic losses: beaches closed for 1-7 days in July-August 2019
Management decision: 27 beaches closed
Additional harmful effect information: warning against swimming in the water with changed color and smell
Created at 08:30 on 3 Mar 2020
Updated at 08:59 on 3 Mar 2020