Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Spatio-temporal dynamics of Pseudo-nitzschia australis bloom in the Iroise Sea: A multi-disciplinary study combining gene expression, environment and hydrodynamics
Prigent, L. (2023). Spatio-temporal dynamics of Pseudo-nitzschia australis bloom in the Iroise Sea: A multi-disciplinary study combining gene expression, environment and hydrodynamics. PhD Thesis. Université de Bretagne Occidentale: Bretagne. 347 pp.
|  |
| Beschikbaar in | Auteur |
|
Documenttype: Doctoraat/Thesis/Eindwerk
|
| Trefwoorden |
ANE, France, Brittany, Iroise Sea
Hydrodynamics
Pseudo-nitzschia australis Frenguelli, 1939 [WoRMS]
Celtic Sea [Marine Regions]
Marien/Kust |
| Author keywords |
spatio-temporal bloom, metatranscriptomics |
| Abstract |
Diatoms of the Pseudo-nitzschia genus produce domoic acid, a neurotoxin responsible for amnesic poisoning syndrome in humans, following consumption of filter-feeding mollusks, andmortality in mammals and seabirds. In France, West-Finistère is regularly affected in early spring by one of the most toxic species, P. australis. This thesis focuses on the spatio-temporal dynamics of blooms of this species in the Iroise Sea. By combining hydrodynamic simulations, metatranscriptomics, monitoring of blooms and associated environmental conditions, this thesis has highlighted the important role of hydrodynamics in the initiation and extension of P. australis blooms (and other diatom species). Hydrodynamic transport of the blooms from south to north has been identified, with potential development in the Bay of Douarnenez before being transported further north to the Bay of Brest. This local development in the Bay ofDouarnenez could be favoured by low dilution, allowing cells to accumulate. However, no relationship between the local environment and the spatio-temporal shift in the blooms could beestablished. However, it was discovered that sexual reproduction plays an essential role in the physiology of P. australis during an in situ bloom. This study highlights the combined roleof the environment, hydrodynamic connectivity and the life cycle in the development, transport and persistence of a bloom in a natural environment. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
