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Statistical measures of distribution patterns of silicon and calcium in marine sedimentary layers
Statistical measures distribution patterns silicon calcium marine sedimentary layers
2009/11/3
We analyze electron microscope X-ray spectroscopy data of recent supratidal marine sediments. Statistical measures are used to characterize the distribution of silicon and calcium in different layers ...
Strong purifying selection in the silicon transporters of marine and freshwater diatoms
Strong purifying silicon transporters of marine freshwater diatoms
2014/4/22
Marine and freshwater diatoms show several important differences in silicon physiology. In addition to containing an order of magnitude more silica in their cell walls, freshwater diatoms also appear ...
Siliceous sponges as a silicon sink: An overlooked aspect of the benthopelagic coupling in the marine silicon cycle
Siliceous sponges silicon sink bathypelagic coupling marine silicon cycle
2014/5/9
Our current understanding of the silicon (Si) cycle in the ocean assumes that diatoms dominate not only the uptake of silicic acid, but also the production and recycling of biogenic silica (BSi), and ...
Dynamics of silicon metabolism and silicon isotopic discrimination in a marine diatom as a function of pCO2
silicon metabolism and silicon isotopic discrimination marine diatom pCO2
2014/5/14
Opal accumulation rates in sediments have been used as a proxy for carbon flux, but there is poor understanding of the factors that regulate the Si quota of diatoms. Natural variation in silicon isoto...
Recovery of Thalassiosira weissflogii from nitrogen and silicon starvation
nitrogen silicon starvation
2014/5/14
The ecological success of marine diatoms comes despite their unusual additional requirement for silicon, a nutrient
that often limits their growth in the ocean. There may be, however, some physiologi...
Bacterial control of silicon regeneration from diatom detritus: Significance of bacterial ectohydrolases and species identity
Bacterial control silicon regeneration diatom detritus bacterial ecto hydrolases species identity
2014/6/10
Bacteria (and possibly archaea) accelerate silica dissolution in the sea by colonizing and enzymatically degrading the organic matrix of diatom frustules. We tested whether colonizer species compositi...