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Origins of Dinophysis blooms which impact Irish aquaculture

Origins of Dinophysis blooms which impact Irish aquaculture
Origins of Dinophysis blooms which impact Irish aquaculture
The main unresolved issue with Dinophysis blooms and their contamination of shellfish with DSP toxins has been the identification of their source. From cruises covering the shelf region south of Ireland over the past years, it was shown that extensive blooms of D. acuta develop in summer in the productive region close to the Celtic Sea Front, a tidal front extending from southeast Ireland across to Britain. Of particular note has been the development of D. acuta populations with cells ranging from 2,000 cells L-1 to 55,000 (2014) and 75,000 (2015) cells L-1 located in a layer at the top of the sub-surface chlorophyll fluorescence maximum.Despite the blooms being localized to stratified water adjacent to the tidal front, they extended over a very large area. Over the rest of the Celtic Sea Shelf, cell densities were less than 100 cells L-1 at this time. These blooms are transported westwards along the south coast of Ireland towards the economically important shellfish culture region of southwest Ireland where they subsequently do harm. The source of these Dinophysis blooms is thus in excess of 300 km from their point of impact
Dinophysis, Celtic Sea
46-49
International Society for the Study of Harmful Algae
Raine, Robin
791e9a43-389f-4731-aa31-49d17383fd24
Barnett, Michelle
fc382e7c-545c-42af-b5b2-65656518109d
Purdie, Duncan
18820b32-185a-467a-8019-01f245191cd8
Proença, Luis A.O.
Hallegraeff, Gustaaf M
Raine, Robin
791e9a43-389f-4731-aa31-49d17383fd24
Barnett, Michelle
fc382e7c-545c-42af-b5b2-65656518109d
Purdie, Duncan
18820b32-185a-467a-8019-01f245191cd8
Proença, Luis A.O.
Hallegraeff, Gustaaf M

Raine, Robin, Barnett, Michelle and Purdie, Duncan (2017) Origins of Dinophysis blooms which impact Irish aquaculture. In, Proença, Luis A.O. and Hallegraeff, Gustaaf M (eds.) Proceedings of the 17th International Conference of Harmful Algae. International Society for the Study of Harmful Algae, pp. 46-49.

Record type: Book Section

Abstract

The main unresolved issue with Dinophysis blooms and their contamination of shellfish with DSP toxins has been the identification of their source. From cruises covering the shelf region south of Ireland over the past years, it was shown that extensive blooms of D. acuta develop in summer in the productive region close to the Celtic Sea Front, a tidal front extending from southeast Ireland across to Britain. Of particular note has been the development of D. acuta populations with cells ranging from 2,000 cells L-1 to 55,000 (2014) and 75,000 (2015) cells L-1 located in a layer at the top of the sub-surface chlorophyll fluorescence maximum.Despite the blooms being localized to stratified water adjacent to the tidal front, they extended over a very large area. Over the rest of the Celtic Sea Shelf, cell densities were less than 100 cells L-1 at this time. These blooms are transported westwards along the south coast of Ireland towards the economically important shellfish culture region of southwest Ireland where they subsequently do harm. The source of these Dinophysis blooms is thus in excess of 300 km from their point of impact

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More information

Published date: 2017
Keywords: Dinophysis, Celtic Sea

Identifiers

Local EPrints ID: 427707
URI: http://eprints.soton.ac.uk/id/eprint/427707
PURE UUID: bc173be0-e55b-43db-963f-00ea0ea79707
ORCID for Michelle Barnett: ORCID iD orcid.org/0000-0002-3882-3649

Catalogue record

Date deposited: 25 Jan 2019 17:30
Last modified: 08 May 2020 16:34

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Contributors

Author: Robin Raine
Author: Duncan Purdie
Editor: Luis A.O. Proença
Editor: Gustaaf M Hallegraeff

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