General Information

Event name: LV-04-002
Country: LATVIA
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Latvian national marine monitoring)
Event occurred before in this location: Yes (detected annualy in October)
Individuals to contact: LEDAINE, Iveta

Location & Date

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Location: Latitude: 57.180000, Longitude: 23.510000
General location information: Central part of the Gulf of Riga, Gulf of Riga, Latvia
HAB Area code(s):
Additional location information: ICES fishing area: 28.
Bloom event dates (yyyy/mm/dd): Start: 2004-10-13,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Chaetoceros danicus (12,320 cells/L)
Detected by light microscopy
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): 4.1 Wind direction: SSE
Stratified water: No Oxygen content (nL/L): 6.7 Wind velocity: 8.4
Temperature (°C): 11 Oxygen saturation %: 91 Current Direction:
Sechhi disk (m): Salinity: 5.6 Current Velocity: 0
Nutrient information: AMONIUM: 0.8 ÁM/L
PHOSPHATE: 0.21 ÁM/L
SILICATE: 10.3 ÁM/L
NITRATE + NITRITE: 1.7 ÁM/L
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
Growth:
Growth Comments SiO4-
Additional Environmental information: Wind velocity: 8.4 m/s.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES