Harmful Algal Information System: Event NL-90-002

General Information

Event name:	NL-90-002
Country:	NETHERLANDS
Nature of the harmful event:	High Phyto concentration
Event directly affected:	Humans
Toxicity detected:	No
Associated syndrome:
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes (Phytoplankton Monitoring program. Tidal Waters Division.)
Event occurred before in this location:	No
Individuals to contact:	WETSTEYN, L.P.M.J

Location:	Latitude: 42.815556, Longitude: 4.519722
General location information:	Waddenzee, HAB Area code(s): NL-01
Additional location information:
Bloom event dates (yyyy/mm/dd):	Event Date:1990-07-01 Start: 1990-07-01, End: 1990-10-31
Quarantine levels dates (yyyy/mm/dd):	First detection: 1990-07-01, End: 1990-10-31
Additional date-related information:	Occurence from July-October.

Causative organism known:	Yes
Causative Species/Genus:	Phaeocystis sp. (> 100,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	In 1990 Phaeocystis number were relatively low. The highest values (1,500,000 cells/L) was measured at station W590 in August 1990.
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Whole column

Growth:

In situ

Growth Comments

Additional Environmental information:

Species containing the toxin

Toxin type

Toxin details

Max. concentration

Assay type

Kit used:

Type of kit used:

Additional information:

Economic losses:

Phaeocystis is under continuous attention of water managers. Implications for economic losses are quite likely.

Management decision:

None.

Additional harmful effect information:

Updated at 06:02 on 16 Apr 2015