| Event name: | DK-98-001 | |
| Country: | DENMARK | |
|
Nature of the harmful event: |
High Phyto concentration , Other ( This file summarizes the phytoplankton situation in Danish coastal waters and fjords in 1998. No algal toxins were observed in 1998.) | |
|
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 | |
| Event occurred before in this location: | No | |
| Individuals to contact: | ANDERSEN, Per | |
| Location: | Latitude: , Longitude: | |
| General location information: |
, HAB Area code(s): DK-04 |
|
| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | In spring and summer. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Prorocentrum sp.
( cells/L)
Prorocentrum cf. Triestinum. High concentrations. Chrysochromulina spp. ( cells/L) Low concentrations Phaeocystis pouchetii ( cells/L) Low concentrations Dictyocha speculum ( cells/L) Low concentrations Pseudo-nitzschia seriata ( cells/L) Low concentrations Pseudo-nitzschia delicatissima ( cells/L) Low concentrations. Noctiluca scintillans ( cells/L) Low concentrations. Gymnodinium sanguineum ( cells/L) Low concentrations Prorocentrum lima ( cells/L) Low concentrations. Dinophysis rotundata ( cells/L) Low concentrations Dinophysis acuta ( cells/L) Low concentrations Dinophysis norvegica ( cells/L) Low concentrations Dinophysis acuminata ( cells/L) Low concentrations Alexandrium tamarense ( cells/L) Low concentrations Alexandrium ostenfeldii ( cells/L) Low concentrations Alexandrium minutum ( cells/L) Low concentrations Prorocentrum minimum ( cells/L) High concentration. Skeletonema costatum ( cells/L) High concentration Prorocentrum micans ( cells/L) High concentrations. |
|
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | The phytoplankton in Danish coastal waters and fjords in 1998 was characterized by relatively low concentrations and biomasses in the spring and most of the summer period. In the summer the biomasses were dominated by diatoms e.g., Skeletonema costatum | |
| Event-related bibliography: | ||
|
||||||||||||||||||||||||||
| 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 low biomasses during summer period were primarely the result of low input of inorganis nutrients from land, caused by low run-off during spring and summer. | |||||||||||||||||||||||||
|
|||||||
| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | Intensified monitoring and/or closing of shellfishery due to concentrations of Dinophysis acuminata, Dinophysis norvegica, Alexandrium species and Pseudonitzschia species exceeding the concentrations in the veterinary guidelines, were imposed at several o | ||||||
| Additional harmful effect information: | No algal toxins were registered in shellfish in 1998 and there are no reports of human intoxications caused by consumption of Danish shellfish in 1998. | ||||||
