General Information

Event name: PL-22-005
Country: POLAND
Nature of the harmful event:
High Phyto concentration , Mass mortalities
Event directly affected:
Planktonic life , Natural Fish , Shellfish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: Mazur-Marzec, Hanna , Kobos, Justyna

Location & Date

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Location: Latitude: 50.946667, Longitude: 17.307500
General location information: Odra River, Oława
HAB Area code(s): PL-03
Additional location information: Oława - city on the Odra River
Bloom event dates (yyyy/mm/dd): Event Date:2022-07-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Prymnesium parvum Carter 1937 ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: https://ios.edu.pl/wp-content/uploads/2022/10/Odra_briefing_ENG.pdf

Environmental Conditions

Weather: 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:
Growth:
Growth Comments
Additional Environmental information: A key factor that enabled the proliferation of the Prymnesium parvum was the high salinity, low water levels, high nutrient concentrations, and high water temperature of the Oder river during this time

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses: mass die-offs of fish and shellfish
Management decision: Fishing out and disposing of tons of dead fish
Additional harmful effect information: Ban on fishing and using the river for recreational purposes
Created at 03:45 on 16 Apr 2024
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES