Event name: | NO-01-001 | |
Country: | NORWAY | |
Nature of the harmful event: |
Mass mortalities | |
Event directly affected: |
Aquaculture Fish | |
Toxicity detected: | No | |
Associated syndrome: | ||
Unexplained toxicity: | No | |
Species implicated in toxin transmission (transvector): | ||
Report the outcome of a monitoring programme: | No | |
Event occurred before in this location: | Yes (bloom in 1998, present in 2000.) | |
Individuals to contact: | NAUSTVOLL, Lars-Johan |
Location: | Latitude: , Longitude: | |
General location information: |
Skagerrak, Flødevigen., HAB Area code(s): NO-11 |
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Additional location information: | The bloom was obseved along the Swedish west-coast and the southern coast of Norway, from Oslofjord to Lista. ICES fishing area: II a. | |
Bloom event dates (yyyy/mm/dd): | Start: 2001-03-14, End: 2001-03-26 | |
Quarantine levels dates (yyyy/mm/dd): | ||
Additional date-related information: | The bloom started in Norwegian waters (Flødevigen) ca 14.03.01 with a maximum concentration around 26.03.01. The bloom was terminated in the beginning of april. |
Causative organism known: | Yes | |
Causative Species/Genus: |
Chattonella sp.
(13,7 x (10 cells/L)
Chattonella cf. Marina |
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Co-Ocurring Species/Genus: |
Heterosigma akashiwo
(13 million cells/L)
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Chlorophyll concentration, if known: | 11.4 µg/L Chlª. µg/l | |
Additional bloom information: | ||
Event-related bibliography: |
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Nutrient information: | ||||||||||||||||||||||||||
Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
Salinity Range During Event: | ||||||||||||||||||||||||||
Bloom location in the water column: |
Surface |
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Growth: | Advected | |||||||||||||||||||||||||
Growth Comments | ||||||||||||||||||||||||||
Additional Environmental information: | Phosphate and nitrate were exausted while there were some silicate left in the surface. |
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Kit used: | Type of kit used: | ||||||
Additional information: | No toxins were recorded neither from mouse-bioassay, Elisa-methods or application of LC/MS. Materials screened for toxin content were: phytoplankton collected by filtration, mussel meat and fish meat. | ||||||
Economic losses: | 1000 tonnes of salmon. | ||||||
Management decision: | |||||||
Additional harmful effect information: |