| Event name: | NO-88-001 | |
| Country: | NORWAY | |
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Nature of the harmful event: |
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Event directly affected: |
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| 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: | Yes (But in low concentrations only) | |
| Individuals to contact: | DAHL, Einar | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Along the coast from the Swedish border to Haugesund at the west coast. and in the open Skagerrak, HAB Area code(s): NO-01 |
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| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | From the beginning of May to the beginning of June 1988 | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Chrysochromulina polylepis
( cells/L)
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | 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: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | Probably a combination, mainly in situ growth in the eastern part of Skagerrak and more an advected population on the west coast of Norway. | |||||||||||||||||||||||||
| Additional Environmental information: | The bloom occurred in the surface of strongly stratified waters of relatively high temperature and low salinity during a period with bright and calm weather. The concentrations of nutrients were normal (relatively low), however, atomic N:P was high, from about 20 to more than hundred. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | Towing of about 120 fish, farms from the west coast skerryguard into the large fiords to save the fish from exposure of algal water. | ||||||
| Additional harmful effect information: | Severe mortalities among encaged fish, even wild fish and invertebrates liVing along the coast in the upper 10-15 m were killed. Also some seaweeds, mainly red algae were damaged during the bloom. Toxins were accumulated in mussels and harvesting was banned | ||||||
