He submitted
held his thesis on Monday 29 April at 9 a.m. (mainland France time) in Noumea on the following subject: "Cyanobacteria diazotrophes of the South Pacific: seasonal variability, morpho-genetic/chemical characterization and potential for use".
Rapporteurs
- Prof. Thomas Olivier University Professor, NUI, Galway
- Dr. Dupouy Cécile HDR Research Fellow, IRD, MIO
Examiners
- Dr. Colin Fabrice Research Director, IRD, CEREGE
- Dr. Lebouvier Nicolas Senior Lecturer HDR, UNC
Directors
- Dr. Bonnet Sophie Research Director, IRD, MIO
- Dr. Hnawia Edouard Senior Lecturer HDR, IRD
Abstract
The South West Pacific and New Caledonia are characterised by a particularly high abundance and diversity of micro-algae, most of which are identified as cyanobacteria. Some of these cyanobacteria have the ability to fix atmospheric nitrogen (N2), and are known as diazotrophic cyanobacteria. These organisms are also known to contain, in varying proportions, high added-value metabolites and nutrients, giving them potential economic value for New Caledonia. Several of these cyanobacteria have been isolated from the coastal waters of New Caledonia and the offshore waters of the South West Pacific, but the capacities of these organisms are still unknown. With a view to gaining a better understanding of their diversity and their potential for economic development, the aims of this doctoral work were (i) to study the seasonal variability in the diversity/activity of diazotrophic cyanobacteria in the Noumea lagoon, (ii) to carry out a morpho/genetic and proteomic characterisation of the study strains isolated and (iii) to assess their potential for development.
All the MIO staff warmly congratulate him.