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Causative organism known:
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Yes
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Causative Species/Genus:
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Dinophysis acuminata
(23,000 cells/L)
1 August. Observed from 5 June to 29 October in Ria de Muro
Dinophysis acuta
(35,500 cells/L)
Max conc in August. From July to November Vigo, Pontevedra and Arosa
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Co-Ocurring Species/Genus:
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Chlorophyll concentration, if known:
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µg/l
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Additional bloom information:
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Other species of Dinophysis (D. rotundata, D. caudata and D. tripos) occurred in lower concentrations. Dinophysis cells comprised a small percentage of the total phytoplankton.
Sampling was carried out with a hose-sampler (recommended by I.C.E.S., WG of
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Event-related bibliography:
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Weather:
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Turbidity (NTU):
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Wind direction:
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Stratified water:
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Yes
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Oxygen content (nL/L):
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Wind velocity:
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Temperature (°C):
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Oxygen saturation %:
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Current Direction:
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Sechhi disk (m):
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Salinity:
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35
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Current Velocity:
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0
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Nutrient information:
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Temperature Range During Event:
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Max: 18 °C, Min: 15 °C
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Salinity Range During Event:
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Bloom location in the water column:
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Growth:
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Advected
In situ
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Growth Comments
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Both mechanisms could occur. Dinophysis acuta concentrations are usually higher offshore, and they seem to be pushed into the rias when winds change from northerly to southerly. This mechanism is suggested for D. acuta in the autumn in the Rias Bajas. The
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Additional Environmental information:
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In July and in August there was an strong thermal gradient between 0 and 15 m with the most marked stratification at the end of July.
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