| Event name: | DK-94-001 | |
| Country: | DENMARK | |
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Nature of the harmful event: |
High Phyto concentration , Seafood toxins | |
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Event directly affected: |
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| Toxicity detected: | Yes | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | No | |
| Individuals to contact: | ANDERSEN, Per | |
| Location: | Latitude: , Longitude: | |
| General location information: |
, HAB Area code(s): DK-04 |
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| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Pseudo-nitzschia delicatissima
( cells/L)
Low concentration. Gyrodinium sp. ( cells/L) Gyrodinium cf. Aureolum. Low concentration Dinophysis rotundata ( cells/L) Low concentration Dinophysis acuta ( cells/L) Low concentration Dinophysis norvegica ( cells/L) Low concentration Alexandrium tamarense ( cells/L) Low concentration Alexandrium ostenfeldii ( cells/L) Low concentration Noctiluca scintillans ( cells/L) High concentration. Gymnodinium sanguineum ( cells/L) High concentration Prorocentrum micans ( cells/L) High concentration. Prorocentrum minimum ( cells/L) High concentration. Dinophysis acuminata ( cells/L) High concentration Pseudo-nitzschia seriata ( cells/L) Low concentration. Chrysochromulina spp. ( cells/L) Low concentration Phaeocystis pouchetii ( cells/L) Low concentration Nodularia spumigena ( cells/L) Low concentration |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | The phytoplakton situation during 1994 was characterized by high concentrations and biomasses in the summerperiod, dominated by diatoms e.g. Rhizosolenia fragilissima and Skeletonema costatum and dinoflagellates Prorocentrum minimum and Prorocentrum mican | |
| 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 | ||||||||||||||||||||||||||
| Additional Environmental information: | The high biomasses were the result of high external input from run-off from land during the winter and spring period, followed by high internal input of inorganic nutrients from the sediments as a result of oxygen deficiency in the exceptieonally calm and | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | Harvesting for mussels were closed or restricted in most areas on the east coast of Jutland and in Isefjorden from May to September, and in one area in the Limfjord in mostof june as well in two areas in the period from October to November because of high | ||||||
| Additional harmful effect information: | DSP toxins were registered at the east coast of Jutland (August), possibly in the Isefjorden (July) as well as in two areas in the Danish Waddensea region (August) (Figures 3 and 4). PSP and ASP were not registered in 1994. | ||||||
