General Information

Event name: ES-04-005
Country: SPAIN
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Planktonic life , Humans
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: Yes (MICROTOX)
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (1. EU Project STRATEGY EVK3-2001-00046. New strategy of monitoring and management of HABs in the Med)
Event occurred before in this location: Yes (Since 1995)
Individuals to contact: GARCÉS, Esther

Location & Date

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Location: Latitude: 41.833333, Longitude: 3.150000
General location information: La Fosca, Catalonia, NE Spain
HAB Area code(s): ES-23
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: At the same time blooms also occurred in diferent beaches in a wide area called Costa Brava.


Causative organism known: No
Causative Species/Genus: Alexandrium taylorii (504,613 cells/L)
Co-Ocurring Species/Genus: Gymnodinium sp. (26,642 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Gasol J.M., Garcés, E. Vila M. (2005) Strong small-scale temporal bacterial changes associated with the migrations of bloom-forming dinoflagellates. Harmful Algae Vol 4/4 pp 771-781. Basterretxea G, Garcés E, A. Jordi A, M. Masó M, Tintoré J (2004). Breeze conditions as a favoring mechanism of Alexandrium taylori blooms at a Mediterranean beach. Estuarine, Coastal and Shelf Science, 32 (1-2):1-12. Masó, M., Garcés, E., and Camp, J. (2003). Drifting plastic debris as a potential vector for dispersing Harmful Algal Bloom (HAB) species. Sciencia Marina 67 (1):107-111 Vila, M., Camp, J., Garcés, E., Masó, M. and Delgado, M. (2001) High resolution spatio-temporal detection of HABs in confined waters of the NW Mediterranean. Journal of Plankton Research, 23: 497-514 Garces, E., Maso, M. and Camp, J. (1999) A recurrent and localized dinoflagellate bloom in Mediterranean beach. Journal of Plankton Research 21: 2373-2391 Garcés, E., Delgado, M., Maso, M., Camp, J. (1998) Life history and in situ growth rates of Alexandrium taylori (Dinophyceae, Pyrrophyta). Journal of Phycology 34: 880-887. Delgado, M., Garcés, E., Vila,M. and Camp,J. (1997) Morphological variability in three populations of the dinoflagellate Alexandrium taylori. Journal of Plankton Research 19, 749-757.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 28 °C, Min: 22 °C
Salinity Range During Event: Max: 38, Min: 36
Bloom location in the water column:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Affected sites are touristic areas.