Modelling the spatial and temporal variability of the SW lagoon of New Caledonia I: a new biogeochemical model based on microbial loop recycling.

This work is an extension and improved version of the biogeochemical model of the South-West lagoon of New Caledonia, presented by Bujan et al. (2000) and Pinazo et al. (2004).

Variability of primary and bacterial production in a coral reef lagoon (New Caledonia).

We assessed the temporal variability of nutrients, phytoplankton and bacterioplankton at two sites of different trophic status in New Caledonia's South-West lagoon, a tropical coastal ecosystem. During stable meteorological conditions, Chl.a, bacterial production and nutrient concentrations experience weak but consistent daily variation.

Temporal variations of microbial activity and diversity in marine tropical sediments (New Caledonia lagoon).

Temporal variations of oxygen consumption, sensitivity to metal spiking, and microbial diversity were investigated during a one-year survey at the sediment-water interface in the tropical lagoon of New Caledonia. Sediment oxygen consumption (SOC) exhibited strong variations with time with maximum rates during February (Austral summer) and minimum values during July (cold period). SOC was strongly positively correlated with temperature, with an apparent activation energy (E (a)) of 41 kJ mol(-1), corresponding to an apparent Q (10)(20-30 degrees C) of 1.