Paralytic Shellfish Poisoning on the East Coast of the UK in Relation to Seasonal Density-driven Circulation |
| |
| Authors: | Brown, J. Fernand, L. Horsburgh, K. J. Hill, A. E. Read, J. W. |
| |
| Affiliation: | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, 1 School of Ocean Sciences, Marine Science Laboratories, University of Wales Bangor, Menai Bridge, YNYS Môn, ll59 5EY and 2 Proudman Oceanographic Laboratory, Bidston, Merseyside, l43 7RA, UK |
| |
| Abstract: | Paralytic shellfish poisoning (PSP) toxin associated with thedinoflagellate Alexandrium tamarense is found on the north-eastcoast of the UK in late spring/early summer. Severe outbreaksare sporadic, and knowledge of the cause and origin of the phytoplanktonblooms and whether they develop from a diffuse source or froma seed population is uncertain. Recent observations of the circulationof the region demonstrate a persistent southward near-coastalflow associated with strong bottom fronts bounding a pool ofcold dense bottom water isolated below the seasonal (spring/summer)thermocline. Flows extend continuously for ~500 km from theFirth of Forth to Flamborough Head before passing offshore tothe Dogger Bank. These observations suggest that dinoflagellatesoriginating from the high concentrations of A. tamarense cystsin the sediment of the Firth of Forth act to maintain a dinoflagellatepopulation in the coastal region south of Flamborough Head,thereby maintaining the rist of PSP outbreaks. |
| |
| Keywords: | |
| 本文献已被 Oxford 等数据库收录！ |
|
