Scales characterising a high density thin layer of Dinophysis acuta Ehrenberg and its transport within a coastal jet

Publisher:
Elsevier Science Bv
Publication Type:
Journal article
Citation:
Farrell, Hazel et al. 2012, 'Scales characterising a high density thin layer of Dinophysis acuta Ehrenberg and its transport within a coastal jet', Harmful Algae, vol. 15, pp. 36-46.
Issue Date:
2012
Full metadata record
Files in This Item:
Filename Description Size
Thumbnail2012002525OK.pdf986.39 kB
Adobe PDF
An investigation into the distribution of Dinophysis spp. in coastal waters off the south coast of Ireland was carried out in July 2007. Dinophysis acuta was present as a sub surface layer containing up to 55,000 cells. The population had a high percentage of viable cells (mean: 89%; median: 94%; n = 24) with a high specific division rate ( 0.55). The layer, of approximately 5 m thickness, did not coincide with the fluorescence maximum and was present as a patch of horizontal dimension less than 10 km 7 km. Both conventional and towed undulating CTD used in conjunction with high vertical resolution sampling methods showed the patch of Dinophysis to move with a similar speed and direction as the coastal flow, which ran parallel to the coast in the form of a coastal jet with speed of the order of 6.57 km day1 . The implications of the alongshore transport of populations of harmful species in coastal jets for monitoring programmes and predictive models are discussed.
Please use this identifier to cite or link to this item: