Harmful Algal Information System: Event PL-22-004

General Information

Event name:	PL-22-004
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

[View larger map]

Location:	Latitude: 50.946667, Longitude: 17.307500
General location information:	Odra River, Southern Baltic Sea HAB Area code(s): PL-03
Additional location information:	Oława - a city on the Oder River
Bloom event dates (yyyy/mm/dd):	Event Date:2022-07-30 Start: 2022-07-30, End: 2022-07-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	tons of dead fish were floating in the river

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:

Advected

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