Accelerated dissolution of diatom silica by marine bacterial assemblages

@article{Bidle1999AcceleratedDO,
  title={Accelerated dissolution of diatom silica by marine bacterial assemblages},
  author={Kay D. Bidle and Farooq Azam},
  journal={Nature},
  year={1999},
  volume={397},
  pages={508-512}
}
Downward fluxes of biogenic silica and organic matter in the global ocean derive dominantly from the productivity of diatoms — phytoplankton with cell walls containing silica encased in an organic matrix,. As diatoms have an absolute requirement for silicon (as silicic acid), its supply into the photic zone — largely by silica dissolution and upwelling — controls diatom production (and consequently the biological uptake of atmospheric CO2 by the ocean) over vast oceanic areas. Current… 
Controls on the Recycling and Preservation of Biogenic Silica from Biomineralization to Burial
The recycling of biogenic silica (bSiO2) produced by diatoms is a vital process sustaining a significant fraction of primary production in the oceans. The efficiency with which bSiO2 dissolves
The role of oxygen conditions in the microbial dissolution of biogenic silica under brackish conditions
Regeneration of biogenic silica (BSi) is essential for the constant supply of dissolved silica (DSi) to diatoms in aquatic ecosystems, where these primary producers play an important role in carbon
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The dissolution rates of diatom frustules, phytoliths, two diatomaceous lake sediments, a siliceous ooze from the Southern Ocean, a diatomite deposit, and a synthetic amorphous silica were measured
Influence of bacteria and salinity on diatom biogenic silica dissolution in estuarine systems
TLDR
It is hypothesized that bacterial colonization increases bSiO2 dissolution by creating a microenvironment at the diatom surface with high ectoproteolytic activity but also via the release of metabolic byproducts since the presence of organic matter seems generally to facilitate diatom bSi O2 dissolution.
Dissolution of biogenic silica: Roles of pH, salinity, pressure, electrical charging and reverse weathering
The recycling of biogenic silica (bSiO2) produced by diatoms is a vital process sustaining a significant fraction of primary production in the oceans. The efficiency with which bSiO2 dissolves
Silicon limitation facilitates virus infection and mortality of marine diatoms
TLDR
Using metatranscriptomics of diatom-associated viruses and quantification of extracellular viruses in coastal water samples, the authors link silicon limitation to increased virus-induced mortality of diatoms, which could have implications for marine biogeochemical cycling.
Evidence for reduced biogenic silica dissolution rates in diatom aggregates
Because aggregated diatoms sink rapidly through the water column, leaving little time for dissolution, aggregation influences the balance between recycling of biogenic silica (bSiO2) and its
Microbial mediation of benthic biogenic silica dissolution
Pore water profiles from 24 stations in the South Atlantic (located in the Guinea, Angola, Cape, Guyana, and Argentine basins) show good correlations of oxygen and silicon, suggesting microbially
Bioavailability of different chemical forms of dissolved silica can affect marine diatom growth
AbstractIn this study, we demonstrate that dissolved silica obtained from mineral (crys-talline quartz), biogenic amorphous (diatomaceous earth) and artificial amor-phous sources (Aerosil) influence
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