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Chapter and Conference Paper
Temperature and Salinity Changes in Coastal Waters of Western Europe: Variability, Trends and Extreme Events
Coastal marine ecosystems worldwide are not only highly affected by the effects of human activities, but also by the influence of natural climate variability and global climate change. However, it is still a c...
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Article
International Silica Cycle Workshop held in Hangzhou
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Article
Influence of diatom diversity on the ocean biological carbon pump
Diatoms sustain the marine food web and contribute to the export of carbon from the surface ocean to depth. They account for about 40% of marine primary productivity and particulate carbon exported to depth as...
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Article
Carbon, nitrogen and phosphorus elemental stoichiometry in aquacultured and wild-caught fish and consequences for pelagic nutrient dynamics
The elemental carbon (C), nitrogen (N) and phosphorus (P) compositions of the whole-body and gut content of wild marine fish inhabiting the Bay of Biscay (Northeast Atlantic) were studied. Furthermore, the lit...
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Chapter
Water Column Biogeochemistry below the Euphotic Zone
The main focus of the International JGOFS research inititiatives was on the cycling of carbon and of associated elements within the surface layer, and their downward export from the upper ocean. Relatively few...
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Article
Silica control of carbon dioxide
Nutrients favouring certain types of phytoplankton over others can influence levels of CO2 in the atmosphere. Silica is one such nutrient. The case is now put that a change in its availability accounted for a ...
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Article
Resolving the ‘opal paradox’ in the Southern Ocean
In the Southern Ocean, high accumulation rates of opal—which forms by precipitation from silica-bearing solutions—have been found in the sediment in spite of low production rates of biogenic silica and carbon ...
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Chapter
The Southern Ocean: Biogeochemical Cycles and Climate Changes
For people concerned by global change due to enhanced greenhouse effect, the Southern Ocean is a very fascinating area. Its extensive cold waters (20% of the World Ocean surface) represent a priori potential s...
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Chapter and Conference Paper
Review Dynamics of nutrients and phytoplankton, and fluxes of carbon, nitrogen and silicon in the Antarctic Ocean
Four major functional units have been identified in the Southern Ocean and the mechanisms that control the dynamics of nutrients and phytoplankton are detailed for the different sub-systems. The very productive C...
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Article
Dynamics of nutrients and phytoplankton, and fluxes of carbon, nitrogen and silicon in the Antarctic Ocean
Four major functional units have been identified in the Southern Ocean and the mechanisms that control the dynamics of nutrients and phytoplankton are detailed for the different sub-systems. The very productive C...
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Article
Microphytobenthos de deux sédiments subtidaux de Nord Bretagne
The annual variations of chloropigments (‘Chl. a’ and phaeopigments) concentrations at two reference stations — a subtidal sand in the Morlaix Bay and a subtidal sandy mud in the ‘Rade de Brest’ (France) — are di...
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Article
Kinetics of dissolution of Antarctic diatom frustules and the biogeochemical cycle of silicon in the Southern Ocean
In order to simulate the fate of biogenic silica generated in the surface waters of the Southern Ocean, the dissolution of silica frustules was studied for seven natural assemblages of diatoms, collected durin...
