Rodney A. Herbert

TL;DR: The data suggest that this novelNitrosomonas subgroup was selected for within polluted fish farm sediments and that the relative abundance of this group was influenced by the extent of pollution.

TL;DR: The substrates used by sulphate-reducing bacteria in sediment slurries from Loch Eil, Loch Etive and the Tay estuary were determined by selectively inhibiting sulphate reduction with 20 mM-molybdate and measuring the resultant substrate accumulation, indicating that metabolic pathways other than those specifically involving sulphate Reduction were not affected by the inhibitor.

TL;DR: Quantitatively, aerobic microcolonies, aerobic colony-forming units and culturable anaerobic bacteria comprised a minor fraction of the total number of viable bacteria, which underlines the necessity for alternative cultivation approaches in bacterial cryobiology.

TL;DR: Investigation of sulphate reduction rates and nitrogen fixation rates associated with isolated roots, rhizomes and sediment from the rhizosphere of the marine macrophytes Zostera noltii and Spartina maritima found plant-associated nitrogen fixation could supply 37-1,613% of the nitrogen needed by the sulphate-reducing community.

TL;DR: From the comparison of the selected sites, three stages of eutrophication are recognized according to the conceptual model of Nienhuis (1992) describing the relation between the relative dominance of primary producers connected to the availability of nutrients.